session-ios/Signal/src/ViewControllers/DebugUI/DebugUIMessages.m

//
//  Copyright (c) 2018 Open Whisper Systems. All rights reserved.
//

#import "DebugUIMessages.h"
#import "DebugUIContacts.h"
#import "OWSTableViewController.h"
#import "Signal-Swift.h"
#import "ThreadUtil.h"
#import <AxolotlKit/PreKeyBundle.h>
#import <Curve25519Kit/Randomness.h>
#import <SignalMessaging/Environment.h>
#import <SignalServiceKit/NSDate+OWS.h>
#import <SignalServiceKit/OWSBatchMessageProcessor.h>
#import <SignalServiceKit/OWSDisappearingConfigurationUpdateInfoMessage.h>
#import <SignalServiceKit/OWSDisappearingMessagesConfiguration.h>
#import <SignalServiceKit/OWSPrimaryStorage+SessionStore.h>
#import <SignalServiceKit/OWSSyncGroupsRequestMessage.h>
#import <SignalServiceKit/OWSVerificationStateChangeMessage.h>
#import <SignalServiceKit/SecurityUtils.h>
#import <SignalServiceKit/TSCall.h>
#import <SignalServiceKit/TSDatabaseView.h>
#import <SignalServiceKit/TSIncomingMessage.h>
#import <SignalServiceKit/TSInvalidIdentityKeyReceivingErrorMessage.h>
#import <SignalServiceKit/TSThread.h>

NS_ASSUME_NONNULL_BEGIN

typedef void (^ActionSuccessBlock)(void);
typedef void (^ActionFailureBlock)(void);
typedef void (^ActionPrepareBlock)(ActionSuccessBlock success, ActionFailureBlock failure);
typedef void (^StaggeredActionBlock)(NSUInteger index,
    YapDatabaseReadWriteTransaction *transaction,
    ActionSuccessBlock success,
    ActionFailureBlock failure);
typedef void (^UnstaggeredActionBlock)(NSUInteger index, YapDatabaseReadWriteTransaction *transaction);

typedef NS_ENUM(NSUInteger, SubactionMode) {
    SubactionMode_Random = 0,
    SubactionMode_Ordered,
};

@interface FakeAssetLoader : NSObject

@property (nonatomic) NSString *fileUrl;
@property (nonatomic) NSString *filename;
@property (nonatomic) NSString *mimeType;

@property (nonatomic, nullable) NSString *filePath;

@end

#pragma mark -

@implementation FakeAssetLoader

- (void)ensureAssetLoaded:(ActionSuccessBlock)success failure:(ActionFailureBlock)failure
{
    OWSAssert(success);
    OWSAssert(failure);
    OWSAssert(self.fileUrl.length > 0);
    OWSAssert(self.filename.length > 0);
    OWSAssert(self.mimeType.length > 0);

    if (self.filePath) {
        success();
        return;
    }

    NSString *filePath = [OWSFileSystem temporaryFilePathWithFileExtension:self.filename.pathExtension];

    //    NSFileManager *fileManager = [NSFileManager defaultManager];
    //    [fileManager]
    //    NSURL *documentDirectoryURL =
    //    [[fileManager URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
    //    NSString *randomFilesDirectoryPath =
    //    [[documentDirectoryURL path] stringByAppendingPathComponent:@"cached_random_files"];
    //    [OWSFileSystem ensureDirectoryExists:randomFilesDirectoryPath];
    //    NSString *filePath = [randomFilesDirectoryPath stringByAppendingPathComponent:self.filename];
    //    if ([fileManager fileExistsAtPath:filePath]) {
    //        success(filePath);
    //    } else {
    NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
    AFHTTPSessionManager *sessionManager = [[AFHTTPSessionManager alloc] initWithSessionConfiguration:configuration];
    sessionManager.responseSerializer = [AFHTTPResponseSerializer serializer];
    OWSAssert(sessionManager.responseSerializer);
    [sessionManager GET:self.fileUrl
        parameters:nil
        progress:nil
        success:^(NSURLSessionDataTask *task, NSData *_Nullable responseObject) {
            if ([responseObject writeToFile:filePath atomically:YES]) {
                self.filePath = filePath;
                OWSAssert([NSFileManager.defaultManager fileExistsAtPath:filePath]);
                success();
            } else {
                OWSFail(@"Error write url response [%@]: %@", self.fileUrl, filePath);
                failure();
            }
        }
        failure:^(NSURLSessionDataTask *_Nullable task, NSError *requestError) {
            OWSFail(@"Error downloading url[%@]: %@", self.fileUrl, requestError);
            failure();
        }];
}

+ (instancetype)jpegInstance
{
    static FakeAssetLoader *instance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        instance = [self new];
        instance.fileUrl = @"https://s3.amazonaws.com/ows-data/example_attachment_media/random-jpg.JPG";
        instance.filename = @"random-jpg.jpg";
        instance.mimeType = @"image/jpeg";
    });
    return instance;
}

+ (instancetype)gifInstance
{
    static FakeAssetLoader *instance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        instance = [self new];
        instance.fileUrl = @"https://s3.amazonaws.com/ows-data/example_attachment_media/random-gif.gif";
        instance.filename = @"random-gif.gif";
        instance.mimeType = @"image/gif";
    });
    return instance;
}

+ (instancetype)mp3Instance
{
    static FakeAssetLoader *instance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        instance = [self new];
        instance.fileUrl = @"https://s3.amazonaws.com/ows-data/example_attachment_media/random-mp3.mp3";
        instance.filename = @"random-mp3.mp3";
        instance.mimeType = @"audio/mpeg";
    });
    return instance;
}

+ (instancetype)mp4Instance
{
    static FakeAssetLoader *instance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        instance = [self new];
        instance.fileUrl = @"https://s3.amazonaws.com/ows-data/example_attachment_media/random-mp4.mp4";
        instance.filename = @"random-mp4.mp4";
        instance.mimeType = @"video/mp4";
    });
    return instance;
}

- (ActionPrepareBlock)prepareBlock
{
    __weak FakeAssetLoader *weakSelf = self;
    return ^(ActionSuccessBlock success, ActionFailureBlock failure) {
        [weakSelf ensureAssetLoaded:success failure:failure];
    };
}

@end

#pragma mark -

@class DebugUIMessagesSingleAction;

@interface DebugUIMessagesAction : NSObject

@property (nonatomic) NSString *label;

@end

#pragma mark -

@interface DebugUIMessagesSingleAction : DebugUIMessagesAction

@property (nonatomic, nullable) ActionPrepareBlock prepareBlock;
// "Single" actions should have exactly one "staggered" or "unstaggered" action block.
@property (nonatomic, nullable) StaggeredActionBlock staggeredActionBlock;
@property (nonatomic, nullable) UnstaggeredActionBlock unstaggeredActionBlock;

@end

#pragma mark -

@implementation DebugUIMessagesAction

- (DebugUIMessagesSingleAction *)nextActionToPerform
{
    return (DebugUIMessagesSingleAction *)self;
}

- (void)prepare:(ActionSuccessBlock)success failure:(ActionFailureBlock)failure
{
    OWSAssert(success);
    OWSAssert(failure);

    OWS_ABSTRACT_METHOD();

    success();
}

- (void)prepareAndPerformNTimes:(NSUInteger)count
{
    //    __weak DebugUIMessagesAction *weakSelf = self;
    [self prepare:^{
        [self performNTimes:count
                    success:^{
                    }
                    failure:^{
                    }];
    }
          failure:^{
          }];
}

- (void)performNTimes:(NSUInteger)countParam success:(ActionSuccessBlock)success failure:(ActionFailureBlock)failure
{
    OWSAssert(success);
    OWSAssert(failure);

    DDLogInfo(@"%@ %@ performNTimes: %zd", self.logTag, self.label, countParam);
    [DDLog flushLog];

    if (countParam < 1) {
        success();
        return;
    }

    __block NSUInteger count = countParam;
    [OWSPrimaryStorage.sharedManager.newDatabaseConnection readWriteWithBlock:^(
        YapDatabaseReadWriteTransaction *transaction) {
        NSUInteger batchSize = 0;
        while (count > 0) {
            NSUInteger index = count;

            DebugUIMessagesSingleAction *action = [self nextActionToPerform];
            OWSAssert([action isKindOfClass:[DebugUIMessagesSingleAction class]]);

            if (action.staggeredActionBlock) {
                OWSAssert(!action.unstaggeredActionBlock);
                action.staggeredActionBlock(index,
                    transaction,
                    ^{
                        dispatch_after(
                            dispatch_time(DISPATCH_TIME_NOW, (int64_t)1.f * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                                DDLogInfo(@"%@ %@ performNTimes success: %zd", self.logTag, self.label, count);
                                [self performNTimes:count - 1 success:success failure:failure];
                            });
                    },
                    failure);

                break;
            } else {
                OWSAssert(action.unstaggeredActionBlock);

                // TODO: We could check result for failure.
                action.unstaggeredActionBlock(index, transaction);

                const NSUInteger kMaxBatchSize = 2500;
                batchSize++;
                if (batchSize >= kMaxBatchSize) {
                    dispatch_after(
                        dispatch_time(DISPATCH_TIME_NOW, (int64_t)1.f * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                            DDLogInfo(@"%@ %@ performNTimes success: %zd", self.logTag, self.label, count);
                            [self performNTimes:count - 1 success:success failure:failure];
                        });

                    break;
                }
                count--;
            }
        }
    }];
}

@end

#pragma mark -

@implementation DebugUIMessagesSingleAction

+ (DebugUIMessagesAction *)actionWithLabel:(NSString *)label
                      staggeredActionBlock:(StaggeredActionBlock)staggeredActionBlock
{
    OWSAssert(label.length > 0);
    OWSAssert(staggeredActionBlock);

    DebugUIMessagesSingleAction *instance = [DebugUIMessagesSingleAction new];
    instance.label = label;
    instance.staggeredActionBlock = staggeredActionBlock;
    return instance;
}

+ (DebugUIMessagesAction *)actionWithLabel:(NSString *)label
                    unstaggeredActionBlock:(UnstaggeredActionBlock)unstaggeredActionBlock
{
    OWSAssert(label.length > 0);
    OWSAssert(unstaggeredActionBlock);

    DebugUIMessagesSingleAction *instance = [DebugUIMessagesSingleAction new];
    instance.label = label;
    instance.unstaggeredActionBlock = unstaggeredActionBlock;
    return instance;
}

+ (DebugUIMessagesAction *)actionWithLabel:(NSString *)label
                      staggeredActionBlock:(StaggeredActionBlock)staggeredActionBlock
                              prepareBlock:(ActionPrepareBlock)prepareBlock
{
    OWSAssert(label.length > 0);
    OWSAssert(staggeredActionBlock);
    OWSAssert(prepareBlock);

    DebugUIMessagesSingleAction *instance = [DebugUIMessagesSingleAction new];
    instance.label = label;
    instance.staggeredActionBlock = staggeredActionBlock;
    instance.prepareBlock = prepareBlock;
    return instance;
}

+ (DebugUIMessagesAction *)actionWithLabel:(NSString *)label
                    unstaggeredActionBlock:(UnstaggeredActionBlock)unstaggeredActionBlock
                              prepareBlock:(ActionPrepareBlock)prepareBlock
{
    OWSAssert(label.length > 0);
    OWSAssert(unstaggeredActionBlock);
    OWSAssert(prepareBlock);

    DebugUIMessagesSingleAction *instance = [DebugUIMessagesSingleAction new];
    instance.label = label;
    instance.unstaggeredActionBlock = unstaggeredActionBlock;
    instance.prepareBlock = prepareBlock;
    return instance;
}

- (void)prepare:(ActionSuccessBlock)success failure:(ActionFailureBlock)failure
{
    OWSAssert(success);
    OWSAssert(failure);

    if (self.prepareBlock) {
        self.prepareBlock(success, failure);
    } else {
        success();
    }
}

@end

#pragma mark -

@interface DebugUIMessagesGroupAction : DebugUIMessagesAction

// "Group" actions should have these properties.
@property (nonatomic) SubactionMode subactionMode;
@property (nonatomic, nullable) NSArray<DebugUIMessagesAction *> *subactions;
@property (nonatomic) NSUInteger subactionIndex;

//@property (nonatomic, nullable) MessageActionBlock actionBlock;
//@property (nonatomic, nullable) StaggeredActionBlock staggeredActionBlock;
//@property (nonatomic, nullable) BulkActionBlock staggeredActionBlock;
//@property (nonatomic, nullable) BulkActionBlock bulkActionBlock;
//@property (nonatomic) BOOL isStaggered;

@end

#pragma mark -

@implementation DebugUIMessagesGroupAction

- (DebugUIMessagesSingleAction *)nextActionToPerform
{
    OWSAssert(self.subactions.count > 0);

    switch (self.subactionMode) {
        case SubactionMode_Random: {
            DebugUIMessagesAction *subaction = self.subactions[arc4random_uniform((uint32_t)self.subactions.count)];
            OWSAssert(subaction);
            return subaction.nextActionToPerform;
        }
        case SubactionMode_Ordered: {
            DebugUIMessagesAction *subaction = self.subactions[self.subactionIndex];
            OWSAssert(subaction);
            self.subactionIndex = (self.subactionIndex + 1) % self.subactions.count;
            return subaction.nextActionToPerform;
        }
    }
}

- (void)prepare:(ActionSuccessBlock)success failure:(ActionFailureBlock)failure
{
    OWSAssert(success);
    OWSAssert(failure);

    [DebugUIMessagesGroupAction prepareSubactions:[self.subactions mutableCopy] success:success failure:failure];
}

+ (void)prepareSubactions:(NSMutableArray<DebugUIMessagesAction *> *)unpreparedSubactions
                  success:(ActionSuccessBlock)success
                  failure:(ActionFailureBlock)failure
{
    OWSAssert(success);
    OWSAssert(failure);

    if (unpreparedSubactions.count < 1) {
        return success();
    }

    DebugUIMessagesAction *nextAction = unpreparedSubactions.lastObject;
    [unpreparedSubactions removeLastObject];
    [nextAction prepare:^{
        [self prepareSubactions:unpreparedSubactions success:success failure:failure];
    }
                failure:^{
                }];
}

// Given a group of subactions, perform a single random subaction each time.
+ (DebugUIMessagesAction *)randomGroupActionWithLabel:(NSString *)label
                                           subactions:(NSArray<DebugUIMessagesAction *> *)subactions
{
    OWSAssert(label.length > 0);
    OWSAssert(subactions.count > 0);

    DebugUIMessagesGroupAction *instance = [DebugUIMessagesGroupAction new];
    instance.label = label;
    instance.subactions = subactions;
    instance.subactionMode = SubactionMode_Random;
    //    instance.staggeredActionBlock = ^(NSUInteger index, YapDatabaseReadWriteTransaction *transaction,
    //    ActionSuccessBlock success, ActionFailureBlock failure) {
    //        [self performRandomStaggeredSubaction:subactions index:index transaction:transaction success:success
    //        failure:failure];
    //    };
    //    instance.prepareBlock = ^(ActionSuccessBlock success, ActionFailureBlock failure) {
    //        [DebugUIMessagesAction prepareSubactions:[subactions mutableCopy] success:success failure:failure];
    //    };
    return instance;
}

// Given a group of subactions, perform all of the subactions each time.
+ (DebugUIMessagesAction *)allGroupActionWithLabel:(NSString *)label
                                        subactions:(NSArray<DebugUIMessagesAction *> *)subactions
{
    OWSAssert(label.length > 0);
    OWSAssert(subactions.count > 0);

    DebugUIMessagesGroupAction *instance = [DebugUIMessagesGroupAction new];
    instance.label = label;
    instance.subactions = subactions;
    instance.subactionMode = SubactionMode_Ordered;
    //    instance.bulkActionBlock = ^(NSUInteger count, YapDatabaseReadWriteTransaction *transaction,
    //    ActionSuccessBlock success, ActionFailureBlock failure) {
    //        for (NSUInteger index = 0; index < count; index++) {
    //            [self performAllUnstaggeredSubactions:[subactions mutableCopy] index:index transaction:transaction
    //            success:success failure:failure];
    //        }
    //    };
    //    instance.prepareBlock = ^(ActionSuccessBlock success, ActionFailureBlock failure) {
    //        [DebugUIMessagesAction prepareSubactions:[subactions mutableCopy] success:success failure:failure];
    //    };
    return instance;
}

@end

#pragma mark -

@interface TSOutgoingMessage (PostDatingDebug)

- (void)setReceivedAtTimestamp:(uint64_t)value;

@end

#pragma mark -

@implementation DebugUIMessages

#pragma mark - Factory Methods

- (NSString *)name
{
    return @"Messages";
}

- (nullable OWSTableSection *)sectionForThread:(nullable TSThread *)thread
{
    OWSAssert(thread);

    NSMutableArray<OWSTableItem *> *items = [NSMutableArray new];

    for (DebugUIMessagesAction *action in @[
             [DebugUIMessages sendMessageVariationsAction:thread],
             // Send Media
             [DebugUIMessages sendJpegAction:thread],
             [DebugUIMessages sendGifAction:thread],
             [DebugUIMessages sendMp3Action:thread],
             [DebugUIMessages sendMp4Action:thread],
             [DebugUIMessages sendAllMediaAction:thread],
             [DebugUIMessages sendRandomMediaAction:thread],
             // Fake Media
             [DebugUIMessages fakeAllMediaAction:thread],
             [DebugUIMessages fakeRandomMediaAction:thread],
             // Fake Text
             [DebugUIMessages fakeAllTextAction:thread],
             [DebugUIMessages fakeRandomTextAction:thread],
             // Exemplary
             [DebugUIMessages allExemplaryAction:thread],
         ]) {
        [items addObject:[OWSTableItem itemWithTitle:action.label
                                         actionBlock:^{
                                             // For "all in group" actions, do each subaction in the group
                                             // exactly once, in a predictable order.
                                             if ([action isKindOfClass:[DebugUIMessagesGroupAction class]]) {
                                                 DebugUIMessagesGroupAction *groupAction
                                                     = (DebugUIMessagesGroupAction *)action;
                                                 if (groupAction.subactionMode == SubactionMode_Ordered) {
                                                     [action prepareAndPerformNTimes:groupAction.subactions.count];
                                                     return;
                                                 }
                                             }
                                             [DebugUIMessages performActionNTimes:action];
                                         }]];
    }
    [items addObjectsFromArray:@[

#pragma mark - Actions

        [OWSTableItem itemWithTitle:@"Send N text messages (1/sec.)"
                        actionBlock:^{
                            [DebugUIMessages sendNTextMessagesInThread:thread];
                        }],
    //        [OWSTableItem itemWithTitle:@"Send N Random Media (1/sec.)"
    //                        actionBlock:^{
    //                            [DebugUIMessages sendSelectedMediaTypeInThread:thread];
    //                        }],

#pragma mark - Misc.

        [OWSTableItem itemWithTitle:@"Perform 100 random actions"
                        actionBlock:^{
                            [DebugUIMessages performRandomActions:100 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Perform 1,000 random actions"
                        actionBlock:^{
                            [DebugUIMessages performRandomActions:1000 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Send 10 tiny text messages (1/sec.)"
                        actionBlock:^{
                            [DebugUIMessages sendTinyTextMessages:10 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Send 100 tiny text messages (1/sec.)"
                        actionBlock:^{
                            [DebugUIMessages sendTinyTextMessages:100 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Send 10 tiny attachments"
                        actionBlock:^{
                            [DebugUIMessages sendTinyAttachments:10 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Send 100 tiny attachments"
                        actionBlock:^{
                            [DebugUIMessages sendTinyAttachments:100 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Send 1,000 tiny attachments"
                        actionBlock:^{
                            [DebugUIMessages sendTinyAttachments:1000 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Send 3,000 tiny attachments"
                        actionBlock:^{
                            [DebugUIMessages sendTinyAttachments:3000 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Create 10 fake messages"
                        actionBlock:^{
                            [DebugUIMessages sendFakeMessages:10 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Create 1 fake thread with 1 message"
                        actionBlock:^{
                            [DebugUIMessages createFakeThreads:1 withFakeMessages:1];
                        }],
        [OWSTableItem itemWithTitle:@"Create 100 fake threads with 10 messages"
                        actionBlock:^{
                            [DebugUIMessages createFakeThreads:100 withFakeMessages:10];
                        }],
        [OWSTableItem itemWithTitle:@"Create 10 fake threads with 100 messages"
                        actionBlock:^{
                            [DebugUIMessages createFakeThreads:10 withFakeMessages:100];
                        }],
        [OWSTableItem itemWithTitle:@"Create 10 fake threads with 10 messages"
                        actionBlock:^{
                            [DebugUIMessages createFakeThreads:10 withFakeMessages:10];
                        }],
        [OWSTableItem itemWithTitle:@"Create 100 fake threads with 100 messages"
                        actionBlock:^{
                            [DebugUIMessages createFakeThreads:100 withFakeMessages:100];
                        }],
        [OWSTableItem itemWithTitle:@"Create 1k fake threads with 1 message"
                        actionBlock:^{
                            [DebugUIMessages createFakeThreads:1000 withFakeMessages:1];
                        }],
        [OWSTableItem itemWithTitle:@"Create 1k fake messages"
                        actionBlock:^{
                            [DebugUIMessages sendFakeMessages:1000 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Create 10k fake messages"
                        actionBlock:^{
                            [DebugUIMessages sendFakeMessages:10 * 1000 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Create 100k fake messages"
                        actionBlock:^{
                            [DebugUIMessages sendFakeMessages:100 * 1000 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Create 100k fake text messages"
                        actionBlock:^{
                            [DebugUIMessages sendFakeMessages:100 * 1000 thread:thread isTextOnly:YES];
                        }],
        [OWSTableItem itemWithTitle:@"Create 1 fake unread messages"
                        actionBlock:^{
                            [DebugUIMessages createFakeUnreadMessages:1 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Create 10 fake unread messages"
                        actionBlock:^{
                            [DebugUIMessages createFakeUnreadMessages:10 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Create 10 fake large attachments"
                        actionBlock:^{
                            [DebugUIMessages createFakeLargeOutgoingAttachments:10 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Create 100 fake large attachments"
                        actionBlock:^{
                            [DebugUIMessages createFakeLargeOutgoingAttachments:100 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Create 1k fake large attachments"
                        actionBlock:^{
                            [DebugUIMessages createFakeLargeOutgoingAttachments:1000 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Create 10k fake large attachments"
                        actionBlock:^{
                            [DebugUIMessages createFakeLargeOutgoingAttachments:10000 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Send text/x-signal-plain"
                        actionBlock:^{
                            [DebugUIMessages sendOversizeTextMessage:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Send unknown mimetype"
                        actionBlock:^{
                            [DebugUIMessages sendRandomAttachment:thread uti:kUnknownTestAttachmentUTI];
                        }],
        [OWSTableItem itemWithTitle:@"Send pdf"
                        actionBlock:^{
                            [DebugUIMessages sendRandomAttachment:thread uti:(NSString *)kUTTypePDF];
                        }],
        [OWSTableItem itemWithTitle:@"Create all system messages"
                        actionBlock:^{
                            [DebugUIMessages createSystemMessagesInThread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Create messages with variety of timestamps"
                        actionBlock:^{
                            [DebugUIMessages createTimestampMessagesInThread:thread];
                        }],

        [OWSTableItem itemWithTitle:@"Send 10 text and system messages"
                        actionBlock:^{
                            [DebugUIMessages sendTextAndSystemMessages:10 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Send 100 text and system messages"
                        actionBlock:^{
                            [DebugUIMessages sendTextAndSystemMessages:100 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Send 1,000 text and system messages"
                        actionBlock:^{
                            [DebugUIMessages sendTextAndSystemMessages:1000 thread:thread];
                        }],
        [OWSTableItem
            itemWithTitle:@"Request Bogus group info"
              actionBlock:^{
                  DDLogInfo(@"%@ Requesting bogus group info for thread: %@", self.logTag, thread);
                  OWSSyncGroupsRequestMessage *syncGroupsRequestMessage =
                      [[OWSSyncGroupsRequestMessage alloc] initWithThread:thread
                                                                  groupId:[Randomness generateRandomBytes:16]];
                  [[Environment current].messageSender enqueueMessage:syncGroupsRequestMessage
                      success:^{
                          DDLogWarn(@"%@ Successfully sent Request Group Info message.", self.logTag);
                      }
                      failure:^(NSError *error) {
                          DDLogError(
                              @"%@ Failed to send Request Group Info message with error: %@", self.logTag, error);
                      }];
              }],
        [OWSTableItem itemWithTitle:@"Inject 10 fake incoming messages"
                        actionBlock:^{
                            [DebugUIMessages injectFakeIncomingMessages:10 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Inject 100 fake incoming messages"
                        actionBlock:^{
                            [DebugUIMessages injectFakeIncomingMessages:100 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Inject 1,000 fake incoming messages"
                        actionBlock:^{
                            [DebugUIMessages injectFakeIncomingMessages:1000 thread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Test Indic Scripts"
                        actionBlock:^{
                            [DebugUIMessages testIndicScriptsInThread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Test Zalgo"
                        actionBlock:^{
                            [DebugUIMessages testZalgoTextInThread:thread];
                        }],
        [OWSTableItem itemWithTitle:@"Test Directional Filenames"
                        actionBlock:^{
                            [DebugUIMessages testDirectionalFilenamesInThread:thread];
                        }],
    ]];

    if ([thread isKindOfClass:[TSContactThread class]]) {
        TSContactThread *contactThread = (TSContactThread *)thread;
        NSString *recipientId = contactThread.contactIdentifier;
        [items addObject:[OWSTableItem itemWithTitle:@"Create 10 new groups"
                                         actionBlock:^{
                                             [DebugUIMessages createNewGroups:10 recipientId:recipientId];
                                         }]];
        [items addObject:[OWSTableItem itemWithTitle:@"Create 100 new groups"
                                         actionBlock:^{
                                             [DebugUIMessages createNewGroups:100 recipientId:recipientId];
                                         }]];
        [items addObject:[OWSTableItem itemWithTitle:@"Create 1,000 new groups"
                                         actionBlock:^{
                                             [DebugUIMessages createNewGroups:1000 recipientId:recipientId];
                                         }]];
    }
    if ([thread isKindOfClass:[TSGroupThread class]]) {
        TSGroupThread *groupThread = (TSGroupThread *)thread;
        [items addObject:[OWSTableItem itemWithTitle:@"Send message to all members"
                                         actionBlock:^{
                                             [DebugUIMessages sendMessages:1 toAllMembersOfGroup:groupThread];
                                         }]];
    }
    return [OWSTableSection sectionWithTitle:self.name items:items];
}

+ (void)sendMessages:(NSUInteger)count toAllMembersOfGroup:(TSGroupThread *)groupThread
{
    for (NSString *recipientId in groupThread.groupModel.groupMemberIds) {
        TSContactThread *contactThread = [TSContactThread getOrCreateThreadWithContactId:recipientId];
        [[self sendTextMessagesActionInThread:contactThread] prepareAndPerformNTimes:count];
    }
}

+ (void)sendTextMessageInThread:(TSThread *)thread counter:(NSUInteger)counter
{
    DDLogInfo(@"%@ sendTextMessageInThread: %zd", self.logTag, counter);
    [DDLog flushLog];

    NSString *randomText = [self randomText];
    NSString *text = [[[@(counter) description] stringByAppendingString:@" "] stringByAppendingString:randomText];
    OWSMessageSender *messageSender = [Environment current].messageSender;
    TSOutgoingMessage *message = [ThreadUtil sendMessageWithText:text inThread:thread messageSender:messageSender];
    DDLogError(@"%@ sendTextMessageInThread timestamp: %llu.", self.logTag, message.timestamp);
}

+ (void)sendNTextMessagesInThread:(TSThread *)thread
{
    [self performActionNTimes:[self sendTextMessagesActionInThread:thread]];
}

+ (DebugUIMessagesAction *)sendTextMessagesActionInThread:(TSThread *)thread
{
    OWSAssert(thread);

    return [DebugUIMessagesSingleAction actionWithLabel:@"Send Text Message"
                                   staggeredActionBlock:^(NSUInteger index,
                                       YapDatabaseReadWriteTransaction *transaction,
                                       ActionSuccessBlock success,
                                       ActionFailureBlock failure) {
                                       dispatch_async(dispatch_get_main_queue(), ^{
                                           [self sendTextMessageInThread:thread counter:index];
                                           // TODO:
                                           success();
                                       });
                                   }];
}

+ (void)sendTinyTextMessageInThread:(TSThread *)thread counter:(NSUInteger)counter
{
    NSString *randomText = [[self randomText] substringToIndex:arc4random_uniform(4)];
    NSString *text = [[[@(counter) description] stringByAppendingString:@" "] stringByAppendingString:randomText];
    OWSMessageSender *messageSender = [Environment current].messageSender;
    [ThreadUtil sendMessageWithText:text inThread:thread messageSender:messageSender];
}

+ (void)sendTinyTextMessages:(NSUInteger)counter thread:(TSThread *)thread
{
    if (counter < 1) {
        return;
    }
    [self sendTinyTextMessageInThread:thread counter:counter];
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)1.f * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
        [self sendTinyTextMessages:counter - 1 thread:thread];
    });
}

//+ (void)ensureRandomFileWithURL:(NSString *)url
//                       filename:(NSString *)filename
//                        success:(nullable void (^)(NSString *filePath))success
//                        failure:(nullable void (^)(void))failure
//{
//    NSFileManager *fileManager = [NSFileManager defaultManager];
//    NSURL *documentDirectoryURL =
//        [[fileManager URLsForDirectory:NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
//    NSString *randomFilesDirectoryPath =
//        [[documentDirectoryURL path] stringByAppendingPathComponent:@"cached_random_files"];
//    [OWSFileSystem ensureDirectoryExists:randomFilesDirectoryPath];
//    NSString *filePath = [randomFilesDirectoryPath stringByAppendingPathComponent:filename];
//    if ([fileManager fileExistsAtPath:filePath]) {
//        success(filePath);
//    } else {
//        NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
//        AFHTTPSessionManager *sessionManager =
//            [[AFHTTPSessionManager alloc] initWithSessionConfiguration:configuration];
//        sessionManager.responseSerializer = [AFHTTPResponseSerializer serializer];
//        OWSAssert(sessionManager.responseSerializer);
//        [sessionManager GET:url
//            parameters:nil
//            progress:nil
//            success:^(NSURLSessionDataTask *task, NSData *_Nullable responseObject) {
//                if ([responseObject writeToFile:filePath atomically:YES]) {
//                    success(filePath);
//                } else {
//                    OWSFail(@"Error write url response [%@]: %@", url, filePath);
//                    failure();
//                }
//            }
//            failure:^(NSURLSessionDataTask *_Nullable task, NSError *requestError) {
//                OWSFail(@"Error downloading url[%@]: %@", url, requestError);
//                failure();
//            }];
//    }
//}

+ (void)sendAttachment:(NSString *)filePath
                thread:(TSThread *)thread
               success:(nullable void (^)(void))success
               failure:(nullable void (^)(void))failure
{
    OWSAssert(filePath);
    OWSAssert(thread);

    OWSMessageSender *messageSender = [Environment current].messageSender;
    NSString *filename = [filePath lastPathComponent];
    NSString *utiType = [MIMETypeUtil utiTypeForFileExtension:filename.pathExtension];
    DataSource *_Nullable dataSource = [DataSourcePath dataSourceWithFilePath:filePath];
    [dataSource setSourceFilename:filename];
    SignalAttachment *attachment =
        [SignalAttachment attachmentWithDataSource:dataSource dataUTI:utiType imageQuality:TSImageQualityOriginal];
    if (arc4random_uniform(100) > 50) {
        attachment.captionText = [self randomCaptionText];
    }

    OWSAssert(attachment);
    if ([attachment hasError]) {
        DDLogError(@"attachment[%@]: %@", [attachment sourceFilename], [attachment errorName]);
        [DDLog flushLog];
    }
    OWSAssert(![attachment hasError]);
    [ThreadUtil sendMessageWithAttachment:attachment inThread:thread messageSender:messageSender completion:nil];
    success();
}

#pragma mark - Infrastructure

+ (void)performActionNTimes:(DebugUIMessagesAction *)action
{
    OWSAssertIsOnMainThread();
    OWSAssert(action);

    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"How many?"
                                                                   message:nil
                                                            preferredStyle:UIAlertControllerStyleActionSheet];
    for (NSNumber *countValue in @[
             @(1),
             @(10),
             @(100),
             @(1 * 1000),
             @(10 * 1000),
         ]) {
        [alert addAction:[UIAlertAction actionWithTitle:countValue.stringValue
                                                  style:UIAlertActionStyleDefault
                                                handler:^(UIAlertAction *ignore) {
                                                    [action prepareAndPerformNTimes:countValue.unsignedIntegerValue];
                                                }]];
    }

    [alert addAction:[OWSAlerts cancelAction]];
    UIViewController *fromViewController = [[UIApplication sharedApplication] frontmostViewController];
    [fromViewController presentViewController:alert animated:YES completion:nil];
}

#pragma mark - Send Media

//+ (void)sendSelectedMediaTypeInThread:(TSThread *)thread
//{
//    OWSAssertIsOnMainThread() OWSAssert(thread);
//
//    NSArray<DebugUIMessagesAction *> *actions = @[
//        [self sendJpegAction:thread],
//        [self sendGifAction:thread],
//        [self sendMp3Action:thread],
//        [self sendMp4Action:thread],
//        [self sendRandomMediaAction:thread],
//    ];
//
//    UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"Select Media Type"
//                                                                   message:nil
//                                                            preferredStyle:UIAlertControllerStyleActionSheet];
//    for (DebugUIMessagesAction *action in actions) {
//        [alert addAction:[UIAlertAction actionWithTitle:action.label
//                                                  style:UIAlertActionStyleDefault
//                                                handler:^(UIAlertAction *ignore) {
//                                                    [self performActionNTimes:action];
//                                                }]];
//    }
//
//    [alert addAction:[OWSAlerts cancelAction]];
//
//    UIViewController *fromViewController = [[UIApplication sharedApplication] frontmostViewController];
//    [fromViewController presentViewController:alert animated:YES completion:nil];
//}

+ (NSArray<DebugUIMessagesAction *> *)allSendMediaActions:(TSThread *)thread
{
    OWSAssert(thread);

    NSArray<DebugUIMessagesAction *> *actions = @[
        [self sendJpegAction:thread],
        [self sendGifAction:thread],
        [self sendMp3Action:thread],
        [self sendMp4Action:thread],
    ];
    return actions;
}

+ (DebugUIMessagesAction *)sendJpegAction:(TSThread *)thread
{
    OWSAssert(thread);

    return [self sendMediaAction:@"Send Jpeg" fakeAssetLoader:[FakeAssetLoader jpegInstance] thread:thread];
}

+ (DebugUIMessagesAction *)sendGifAction:(TSThread *)thread
{
    OWSAssert(thread);

    return [self sendMediaAction:@"Send Gif" fakeAssetLoader:[FakeAssetLoader gifInstance] thread:thread];
}

+ (DebugUIMessagesAction *)sendMp3Action:(TSThread *)thread
{
    OWSAssert(thread);

    return [self sendMediaAction:@"Send Mp3" fakeAssetLoader:[FakeAssetLoader mp3Instance] thread:thread];
}

+ (DebugUIMessagesAction *)sendMp4Action:(TSThread *)thread
{
    OWSAssert(thread);

    return [self sendMediaAction:@"Send Mp4" fakeAssetLoader:[FakeAssetLoader mp4Instance] thread:thread];
}

+ (DebugUIMessagesAction *)sendMediaAction:(NSString *)label
                           fakeAssetLoader:(FakeAssetLoader *)fakeAssetLoader
                                    thread:(TSThread *)thread
{
    OWSAssert(label.length > 0);
    OWSAssert(fakeAssetLoader);
    OWSAssert(thread);

    return [DebugUIMessagesSingleAction
             actionWithLabel:label
        staggeredActionBlock:^(NSUInteger index,
            YapDatabaseReadWriteTransaction *transaction,
            ActionSuccessBlock success,
            ActionFailureBlock failure) {
            dispatch_async(dispatch_get_main_queue(), ^{
                OWSAssert(fakeAssetLoader.filePath.length > 0);
                [self sendAttachment:fakeAssetLoader.filePath thread:thread success:success failure:failure];
            });
        }
                prepareBlock:fakeAssetLoader.prepareBlock];
}

+ (DebugUIMessagesAction *)sendAllMediaAction:(TSThread *)thread
{
    OWSAssert(thread);

    return [DebugUIMessagesGroupAction allGroupActionWithLabel:@"Send All Media"
                                                    subactions:[self allSendMediaActions:thread]];
}

+ (DebugUIMessagesAction *)sendRandomMediaAction:(TSThread *)thread
{
    OWSAssert(thread);

    return [DebugUIMessagesGroupAction randomGroupActionWithLabel:@"Send Random Media"
                                                       subactions:[self allSendMediaActions:thread]];
}

#pragma mark - Fake Outgoing Media

+ (DebugUIMessagesAction *)fakeOutgoingJpegAction:(TSThread *)thread
                                     messageState:(TSOutgoingMessageState)messageState
                                       hasCaption:(BOOL)hasCaption
{
    OWSAssert(thread);

    return [self fakeOutgoingMediaAction:@"Fake Outgoing Jpeg"
                            messageState:messageState
                              hasCaption:hasCaption
                         fakeAssetLoader:[FakeAssetLoader jpegInstance]
                                  thread:thread];
}

+ (DebugUIMessagesAction *)fakeOutgoingGifAction:(TSThread *)thread
                                    messageState:(TSOutgoingMessageState)messageState
                                      hasCaption:(BOOL)hasCaption
{
    OWSAssert(thread);

    return [self fakeOutgoingMediaAction:@"Fake Outgoing Gif"
                            messageState:messageState
                              hasCaption:hasCaption
                         fakeAssetLoader:[FakeAssetLoader gifInstance]
                                  thread:thread];
}

+ (DebugUIMessagesAction *)fakeOutgoingMp3Action:(TSThread *)thread
                                    messageState:(TSOutgoingMessageState)messageState
                                      hasCaption:(BOOL)hasCaption
{
    OWSAssert(thread);

    return [self fakeOutgoingMediaAction:@"Fake Outgoing Mp3"
                            messageState:messageState
                              hasCaption:hasCaption
                         fakeAssetLoader:[FakeAssetLoader mp3Instance]
                                  thread:thread];
}

+ (DebugUIMessagesAction *)fakeOutgoingMp4Action:(TSThread *)thread
                                    messageState:(TSOutgoingMessageState)messageState
                                      hasCaption:(BOOL)hasCaption
{
    OWSAssert(thread);

    return [self fakeOutgoingMediaAction:@"Fake Outgoing Mp4"
                            messageState:messageState
                              hasCaption:hasCaption
                         fakeAssetLoader:[FakeAssetLoader mp4Instance]
                                  thread:thread];
}

+ (DebugUIMessagesAction *)fakeOutgoingMediaAction:(NSString *)labelParam
                                      messageState:(TSOutgoingMessageState)messageState
                                        hasCaption:(BOOL)hasCaption
                                   fakeAssetLoader:(FakeAssetLoader *)fakeAssetLoader
                                            thread:(TSThread *)thread
{
    OWSAssert(labelParam.length > 0);
    OWSAssert(fakeAssetLoader);
    OWSAssert(thread);

    NSString *label = labelParam;
    if (hasCaption) {
        label = [label stringByAppendingString:@" 🔤"];
    }
    if (messageState == TSOutgoingMessageStateUnsent) {
        label = [label stringByAppendingString:@" (Unsent)"];
    } else if (messageState == TSOutgoingMessageStateAttemptingOut) {
        label = [label stringByAppendingString:@" (Sending)"];
    } else if (messageState == TSOutgoingMessageStateSentToService) {
        label = [label stringByAppendingString:@" (Sent)"];
    } else {
        OWSFail(@"%@ unknown message state.", self.logTag)
    }

    return
        [DebugUIMessagesSingleAction actionWithLabel:label
                              unstaggeredActionBlock:^(NSUInteger index, YapDatabaseReadWriteTransaction *transaction) {
                                  OWSAssert(fakeAssetLoader.filePath.length > 0);
                                  [self createFakeOutgoingMedia:index
                                                   messageState:messageState
                                                     hasCaption:hasCaption
                                                fakeAssetLoader:fakeAssetLoader
                                                         thread:thread
                                                    transaction:transaction];
                              }
                                        prepareBlock:fakeAssetLoader.prepareBlock];
}

+ (void)createFakeOutgoingMedia:(NSUInteger)index
                   messageState:(TSOutgoingMessageState)messageState
                     hasCaption:(BOOL)hasCaption
                fakeAssetLoader:(FakeAssetLoader *)fakeAssetLoader
                         thread:(TSThread *)thread
                    transaction:(YapDatabaseReadWriteTransaction *)transaction
{
    OWSAssert(thread);
    OWSAssert(fakeAssetLoader.filePath);
    OWSAssert(transaction);

    // Random time within last n years. Helpful for filling out a media gallery over time.
    //    double yearsMillis = 4.0 * kYearsInMs;
    //    uint64_t millisAgo = (uint64_t)(((double)arc4random() / ((double)0xffffffff)) * yearsMillis);
    //    uint64_t timestamp = [NSDate ows_millisecondTimeStamp] - millisAgo;
    uint64_t timestamp = [NSDate ows_millisecondTimeStamp];

    NSString *messageBody = nil;
    if (hasCaption) {
        messageBody = [[@(index).stringValue stringByAppendingString:@" "] stringByAppendingString:[self randomText]];

        if (hasCaption) {
            messageBody = [messageBody stringByAppendingString:@" 🔤"];
        }
        if (messageState == TSOutgoingMessageStateUnsent) {
            messageBody = [messageBody stringByAppendingString:@" (Unsent)"];
        } else if (messageState == TSOutgoingMessageStateAttemptingOut) {
            messageBody = [messageBody stringByAppendingString:@" (Sending)"];
        } else if (messageState == TSOutgoingMessageStateSentToService) {
            messageBody = [messageBody stringByAppendingString:@" (Sent)"];
        } else {
            OWSFail(@"%@ unknown message state.", self.logTag)
        }
    }

    NSString *_Nullable randomCaption;
    if (arc4random() % 2 == 2) {
        randomCaption = [self randomText];
    }
    TSOutgoingMessage *message = [[TSOutgoingMessage alloc] initWithTimestamp:timestamp
                                                                     inThread:thread
                                                                  messageBody:randomCaption
                                                               isVoiceMessage:NO
                                                             expiresInSeconds:0];
    [message setReceivedAtTimestamp:timestamp];

    DataSource *dataSource = [DataSourcePath dataSourceWithFilePath:fakeAssetLoader.filePath];
    NSString *filename = dataSource.sourceFilename;
    TSAttachmentStream *attachmentStream = [[TSAttachmentStream alloc] initWithContentType:fakeAssetLoader.mimeType
                                                                                 byteCount:(UInt32)dataSource.dataLength
                                                                            sourceFilename:filename];
    NSError *error;
    BOOL success = [attachmentStream writeData:dataSource.data error:&error];
    OWSAssert(success && !error);

    [attachmentStream saveWithTransaction:transaction];
    [message.attachmentIds addObject:attachmentStream.uniqueId];
    if (filename) {
        message.attachmentFilenameMap[attachmentStream.uniqueId] = filename;
    }
    [message saveWithTransaction:transaction];
    [message updateWithMessageState:messageState transaction:transaction];
}

#pragma mark - Fake Incoming Media

+ (DebugUIMessagesAction *)fakeIncomingJpegAction:(TSThread *)thread
                           isAttachmentDownloaded:(BOOL)isAttachmentDownloaded
                                       hasCaption:(BOOL)hasCaption
{
    OWSAssert(thread);

    return [self fakeIncomingMediaAction:@"Fake Incoming Jpeg"
                  isAttachmentDownloaded:isAttachmentDownloaded
                              hasCaption:hasCaption
                         fakeAssetLoader:[FakeAssetLoader jpegInstance]
                                  thread:thread];
}

+ (DebugUIMessagesAction *)fakeIncomingGifAction:(TSThread *)thread
                          isAttachmentDownloaded:(BOOL)isAttachmentDownloaded
                                      hasCaption:(BOOL)hasCaption
{
    OWSAssert(thread);

    return [self fakeIncomingMediaAction:@"Fake Incoming Gif"
                  isAttachmentDownloaded:isAttachmentDownloaded
                              hasCaption:hasCaption
                         fakeAssetLoader:[FakeAssetLoader gifInstance]
                                  thread:thread];
}

+ (DebugUIMessagesAction *)fakeIncomingMp3Action:(TSThread *)thread
                          isAttachmentDownloaded:(BOOL)isAttachmentDownloaded
                                      hasCaption:(BOOL)hasCaption
{
    OWSAssert(thread);

    return [self fakeIncomingMediaAction:@"Fake Incoming Mp3"
                  isAttachmentDownloaded:isAttachmentDownloaded
                              hasCaption:hasCaption
                         fakeAssetLoader:[FakeAssetLoader mp3Instance]
                                  thread:thread];
}

+ (DebugUIMessagesAction *)fakeIncomingMp4Action:(TSThread *)thread
                          isAttachmentDownloaded:(BOOL)isAttachmentDownloaded
                                      hasCaption:(BOOL)hasCaption
{
    OWSAssert(thread);

    return [self fakeIncomingMediaAction:@"Fake Incoming Mp4"
                  isAttachmentDownloaded:isAttachmentDownloaded
                              hasCaption:hasCaption
                         fakeAssetLoader:[FakeAssetLoader mp4Instance]
                                  thread:thread];
}

+ (DebugUIMessagesAction *)fakeIncomingMediaAction:(NSString *)labelParam
                            isAttachmentDownloaded:(BOOL)isAttachmentDownloaded
                                        hasCaption:(BOOL)hasCaption
                                   fakeAssetLoader:(FakeAssetLoader *)fakeAssetLoader
                                            thread:(TSThread *)thread
{
    OWSAssert(labelParam.length > 0);
    OWSAssert(fakeAssetLoader);
    OWSAssert(thread);

    NSString *label = labelParam;
    if (hasCaption) {
        label = [label stringByAppendingString:@" 🔤"];
    }

    if (isAttachmentDownloaded) {
        label = [label stringByAppendingString:@" 👍"];
    }

    return
        [DebugUIMessagesSingleAction actionWithLabel:label
                              unstaggeredActionBlock:^(NSUInteger index, YapDatabaseReadWriteTransaction *transaction) {
                                  OWSAssert(fakeAssetLoader.filePath.length > 0);
                                  [self createFakeIncomingMedia:index
                                         isAttachmentDownloaded:isAttachmentDownloaded
                                                     hasCaption:hasCaption
                                                fakeAssetLoader:fakeAssetLoader
                                                         thread:thread
                                                    transaction:transaction];
                              }
                                        prepareBlock:fakeAssetLoader.prepareBlock];
}

+ (void)createFakeIncomingMedia:(NSUInteger)index
         isAttachmentDownloaded:(BOOL)isAttachmentDownloaded
                     hasCaption:(BOOL)hasCaption
                fakeAssetLoader:(FakeAssetLoader *)fakeAssetLoader
                         thread:(TSThread *)thread
                    transaction:(YapDatabaseReadWriteTransaction *)transaction
{
    OWSAssert(thread);
    OWSAssert(fakeAssetLoader.filePath);
    OWSAssert(transaction);

    //    // Random time within last n years. Helpful for filling out a media gallery over time.
    //    double yearsMillis = 4.0 * kYearsInMs;
    //    uint64_t millisAgo = (uint64_t)(((double)arc4random() / ((double)0xffffffff)) * yearsMillis);
    //    uint64_t timestamp = [NSDate ows_millisecondTimeStamp] - millisAgo;

    NSString *messageBody = nil;
    if (hasCaption) {
        messageBody = [[@(index).stringValue stringByAppendingString:@" "] stringByAppendingString:[self randomText]];

        if (hasCaption) {
            messageBody = [messageBody stringByAppendingString:@" 🔤"];
        }

        if (isAttachmentDownloaded) {
            messageBody = [messageBody stringByAppendingString:@" 👍"];
        }
    }
    NSString *attachmentId;
    if (isAttachmentDownloaded) {
        DataSource *dataSource = [DataSourcePath dataSourceWithFilePath:fakeAssetLoader.filePath];
        NSString *filename = dataSource.sourceFilename;
        TSAttachmentStream *attachmentStream =
            [[TSAttachmentStream alloc] initWithContentType:fakeAssetLoader.mimeType
                                                  byteCount:(UInt32)dataSource.dataLength
                                             sourceFilename:filename];
        NSError *error;
        BOOL success = [attachmentStream writeData:dataSource.data error:&error];
        OWSAssert(success && !error);

        [attachmentStream saveWithTransaction:transaction];
        attachmentId = attachmentStream.uniqueId;
    } else {
        UInt32 filesize = 64;
        TSAttachmentPointer *pointer =
            [[TSAttachmentPointer alloc] initWithServerId:237391539706350548
                                                      key:[self createRandomNSDataOfSize:filesize]
                                                   digest:nil
                                                byteCount:filesize
                                              contentType:fakeAssetLoader.mimeType
                                                    relay:@""
                                           sourceFilename:fakeAssetLoader.filename
                                           attachmentType:TSAttachmentTypeDefault];
        pointer.state = TSAttachmentPointerStateFailed;
        [pointer saveWithTransaction:transaction];
        attachmentId = pointer.uniqueId;
    }
    TSIncomingMessage *message = [[TSIncomingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                     inThread:thread
                                                                     authorId:@"+19174054215"
                                                               sourceDeviceId:0
                                                                  messageBody:messageBody
                                                                attachmentIds:@[
                                                                    attachmentId,
                                                                ]
                                                             expiresInSeconds:0];
    [message markAsReadWithTransaction:transaction sendReadReceipt:NO updateExpiration:NO];
}

#pragma mark - Fake Media

+ (NSArray<DebugUIMessagesAction *> *)allFakeMediaActions:(TSThread *)thread
{
    OWSAssert(thread);

    NSArray<DebugUIMessagesAction *> *actions = @[
        // Outgoing
        [self fakeOutgoingJpegAction:thread messageState:TSOutgoingMessageStateUnsent hasCaption:NO],
        [self fakeOutgoingJpegAction:thread messageState:TSOutgoingMessageStateUnsent hasCaption:YES],
        [self fakeOutgoingJpegAction:thread messageState:TSOutgoingMessageStateAttemptingOut hasCaption:NO],
        [self fakeOutgoingJpegAction:thread messageState:TSOutgoingMessageStateAttemptingOut hasCaption:YES],
        [self fakeOutgoingJpegAction:thread messageState:TSOutgoingMessageStateSentToService hasCaption:NO],
        [self fakeOutgoingJpegAction:thread messageState:TSOutgoingMessageStateSentToService hasCaption:YES],
        // Don't bother with multiple GIF states.
        [self fakeOutgoingGifAction:thread messageState:TSOutgoingMessageStateSentToService hasCaption:NO],
        //
        [self fakeOutgoingMp3Action:thread messageState:TSOutgoingMessageStateAttemptingOut hasCaption:YES],
        [self fakeOutgoingMp3Action:thread messageState:TSOutgoingMessageStateAttemptingOut hasCaption:NO],
        [self fakeOutgoingMp3Action:thread messageState:TSOutgoingMessageStateUnsent hasCaption:NO],
        [self fakeOutgoingMp3Action:thread messageState:TSOutgoingMessageStateUnsent hasCaption:YES],
        [self fakeOutgoingMp3Action:thread messageState:TSOutgoingMessageStateSentToService hasCaption:NO],
        [self fakeOutgoingMp3Action:thread messageState:TSOutgoingMessageStateSentToService hasCaption:YES],
        //
        [self fakeOutgoingMp4Action:thread messageState:TSOutgoingMessageStateAttemptingOut hasCaption:NO],
        [self fakeOutgoingMp4Action:thread messageState:TSOutgoingMessageStateAttemptingOut hasCaption:YES],
        [self fakeOutgoingMp4Action:thread messageState:TSOutgoingMessageStateUnsent hasCaption:NO],
        [self fakeOutgoingMp4Action:thread messageState:TSOutgoingMessageStateUnsent hasCaption:YES],
        [self fakeOutgoingMp4Action:thread messageState:TSOutgoingMessageStateSentToService hasCaption:NO],
        [self fakeOutgoingMp4Action:thread messageState:TSOutgoingMessageStateSentToService hasCaption:YES],

        // Incoming
        [self fakeIncomingJpegAction:thread isAttachmentDownloaded:NO hasCaption:NO],
        [self fakeIncomingJpegAction:thread isAttachmentDownloaded:YES hasCaption:NO],
        [self fakeIncomingJpegAction:thread isAttachmentDownloaded:NO hasCaption:YES],
        [self fakeIncomingJpegAction:thread isAttachmentDownloaded:YES hasCaption:YES],
        // Don't bother with multiple GIF states.
        [self fakeIncomingGifAction:thread isAttachmentDownloaded:YES hasCaption:NO],
        //
        [self fakeIncomingMp3Action:thread isAttachmentDownloaded:NO hasCaption:NO],
        [self fakeIncomingMp3Action:thread isAttachmentDownloaded:YES hasCaption:NO],
        [self fakeIncomingMp3Action:thread isAttachmentDownloaded:NO hasCaption:YES],
        [self fakeIncomingMp3Action:thread isAttachmentDownloaded:YES hasCaption:YES],
        //
        [self fakeIncomingMp4Action:thread isAttachmentDownloaded:NO hasCaption:NO],
        [self fakeIncomingMp4Action:thread isAttachmentDownloaded:YES hasCaption:NO],
        [self fakeIncomingMp4Action:thread isAttachmentDownloaded:NO hasCaption:YES],
        [self fakeIncomingMp4Action:thread isAttachmentDownloaded:YES hasCaption:YES],
    ];
    return actions;
}

+ (DebugUIMessagesAction *)fakeAllMediaAction:(TSThread *)thread
{
    OWSAssert(thread);

    return [DebugUIMessagesGroupAction allGroupActionWithLabel:@"Fake All Media"
                                                    subactions:[self allFakeMediaActions:thread]];
}

+ (DebugUIMessagesAction *)fakeRandomMediaAction:(TSThread *)thread
{
    OWSAssert(thread);

    return [DebugUIMessagesGroupAction randomGroupActionWithLabel:@"Fake Random Media"
                                                       subactions:[self allFakeMediaActions:thread]];
}

#pragma mark - Send Text Messages

+ (DebugUIMessagesAction *)sendShortTextMessageAction:(TSThread *)thread
{
    OWSAssert(thread);

    return [DebugUIMessagesSingleAction actionWithLabel:@"Send Short Text Message"
                                   staggeredActionBlock:^(NSUInteger index,
                                       YapDatabaseReadWriteTransaction *transaction,
                                       ActionSuccessBlock success,
                                       ActionFailureBlock failure) {
                                       dispatch_async(dispatch_get_main_queue(), ^{
                                           [self sendTextMessageInThread:thread counter:index];
                                       });
                                   }];
}

+ (DebugUIMessagesAction *)sendOversizeTextMessageAction:(TSThread *)thread
{
    OWSAssert(thread);

    return [DebugUIMessagesSingleAction actionWithLabel:@"Send Oversize Text Message"
                                   staggeredActionBlock:^(NSUInteger index,
                                       YapDatabaseReadWriteTransaction *transaction,
                                       ActionSuccessBlock success,
                                       ActionFailureBlock failure) {
                                       dispatch_async(dispatch_get_main_queue(), ^{
                                           [self sendOversizeTextMessage:thread];
                                       });
                                   }];
}

+ (DebugUIMessagesAction *)sendMessageVariationsAction:(TSThread *)thread
{
    OWSAssert(thread);

    NSArray<DebugUIMessagesAction *> *actions = @[
        [self sendShortTextMessageAction:thread],
        [self sendOversizeTextMessageAction:thread],
    ];

    return [DebugUIMessagesGroupAction allGroupActionWithLabel:@"Send Conversation Cell Variations" subactions:actions];
}

#pragma mark - Fake Text Messages

+ (DebugUIMessagesAction *)fakeShortIncomingTextMessageAction:(TSThread *)thread
{
    OWSAssert(thread);

    return [DebugUIMessagesSingleAction
               actionWithLabel:@"Fake Short Incoming Text Message"
        unstaggeredActionBlock:^(NSUInteger index, YapDatabaseReadWriteTransaction *transaction) {
            NSString *messageBody =
                [[@(index).stringValue stringByAppendingString:@" "] stringByAppendingString:[self randomText]];
            TSIncomingMessage *message = [[TSIncomingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                             inThread:thread
                                                                             authorId:@"+19174054215"
                                                                       sourceDeviceId:0
                                                                          messageBody:messageBody];
            [message markAsReadWithTransaction:transaction sendReadReceipt:NO updateExpiration:NO];
        }];
}

+ (DebugUIMessagesAction *)fakeIncomingTextMessageAction:(TSThread *)thread text:(NSString *)text
{
    OWSAssert(thread);

    return [DebugUIMessagesSingleAction
               actionWithLabel:[NSString stringWithFormat:@"Fake Incoming Text Message (%@)", text]
        unstaggeredActionBlock:^(NSUInteger index, YapDatabaseReadWriteTransaction *transaction) {
            TSIncomingMessage *message = [[TSIncomingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                             inThread:thread
                                                                             authorId:@"+19174054215"
                                                                       sourceDeviceId:0
                                                                          messageBody:text];
            [message markAsReadWithTransaction:transaction sendReadReceipt:NO updateExpiration:NO];
        }];
}

+ (DebugUIMessagesAction *)fakeOutgoingTextMessageAction:(TSThread *)thread
                                            messageState:(TSOutgoingMessageState)messageState
                                                    text:(NSString *)text
{
    OWSAssert(thread);

    return [DebugUIMessagesSingleAction
               actionWithLabel:[NSString stringWithFormat:@"Fake Incoming Text Message (%@)", text]
        unstaggeredActionBlock:^(NSUInteger index, YapDatabaseReadWriteTransaction *transaction) {
            TSOutgoingMessage *message = [[TSOutgoingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                             inThread:thread
                                                                          messageBody:text];
            [message saveWithTransaction:transaction];
            [message updateWithMessageState:messageState transaction:transaction];
        }];
}

+ (DebugUIMessagesAction *)fakeShortOutgoingTextMessageAction:(TSThread *)thread
                                                 messageState:(TSOutgoingMessageState)messageState
{
    OWSAssert(thread);

    return [DebugUIMessagesSingleAction
               actionWithLabel:@"Fake Short Incoming Text Message"
        unstaggeredActionBlock:^(NSUInteger index, YapDatabaseReadWriteTransaction *transaction) {
            NSString *messageBody =
                [[@(index).stringValue stringByAppendingString:@" "] stringByAppendingString:[self randomText]];
            TSOutgoingMessage *message = [[TSOutgoingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                             inThread:thread
                                                                          messageBody:messageBody];
            [message saveWithTransaction:transaction];
            [message updateWithMessageState:messageState transaction:transaction];
        }];
}

+ (NSArray<DebugUIMessagesAction *> *)allFakeTextActions:(TSThread *)thread
{
    OWSAssert(thread);

    NSArray<DebugUIMessagesAction *> *actions = @[
        [self fakeShortIncomingTextMessageAction:thread],
        [self fakeIncomingTextMessageAction:thread text:@"Hi"],
        [self fakeIncomingTextMessageAction:thread text:@"1️⃣"],
        [self fakeIncomingTextMessageAction:thread text:@"1️⃣2️⃣"],
        [self fakeIncomingTextMessageAction:thread text:@"1️⃣2️⃣3️⃣"],
        [self fakeIncomingTextMessageAction:thread text:@"落"],
        [self fakeIncomingTextMessageAction:thread text:@"﷽"],

        [self fakeShortOutgoingTextMessageAction:thread messageState:TSOutgoingMessageStateUnsent],
        [self fakeShortOutgoingTextMessageAction:thread messageState:TSOutgoingMessageStateAttemptingOut],
        [self fakeShortOutgoingTextMessageAction:thread messageState:TSOutgoingMessageStateSentToService],
        [self fakeOutgoingTextMessageAction:thread messageState:TSOutgoingMessageStateSentToService text:@"Hi"],
        [self fakeOutgoingTextMessageAction:thread messageState:TSOutgoingMessageStateSentToService text:@"1️⃣"],
        [self fakeOutgoingTextMessageAction:thread
                               messageState:TSOutgoingMessageStateSentToService
                                       text:@"1️⃣2️⃣"],
        [self fakeOutgoingTextMessageAction:thread
                               messageState:TSOutgoingMessageStateSentToService
                                       text:@"1️⃣2️⃣3️⃣"],
        [self fakeOutgoingTextMessageAction:thread messageState:TSOutgoingMessageStateSentToService text:@"1️⃣"],
        [self fakeOutgoingTextMessageAction:thread messageState:TSOutgoingMessageStateSentToService text:@"落"],
        [self fakeOutgoingTextMessageAction:thread messageState:TSOutgoingMessageStateSentToService text:@"﷽"],
    ];
    return actions;
}

+ (DebugUIMessagesAction *)fakeAllTextAction:(TSThread *)thread
{
    OWSAssert(thread);

    return [DebugUIMessagesGroupAction allGroupActionWithLabel:@"Fake All Text"
                                                    subactions:[self allFakeTextActions:thread]];
}

+ (DebugUIMessagesAction *)fakeRandomTextAction:(TSThread *)thread
{
    OWSAssert(thread);

    return [DebugUIMessagesGroupAction randomGroupActionWithLabel:@"Fake Random Text"
                                                       subactions:[self allFakeTextActions:thread]];
}

#pragma mark - Exemplary

+ (DebugUIMessagesAction *)allExemplaryAction:(TSThread *)thread
{
    OWSAssert(thread);

    NSMutableArray<DebugUIMessagesAction *> *actions = [NSMutableArray new];
    [actions addObjectsFromArray:[self allFakeMediaActions:thread]];
    [actions addObjectsFromArray:[self allFakeTextActions:thread]];

    return [DebugUIMessagesGroupAction allGroupActionWithLabel:@"Exemplary Permutations" subactions:actions];
}

#pragma mark -

+ (void)sendOversizeTextMessage:(TSThread *)thread
{
    OWSMessageSender *messageSender = [Environment current].messageSender;
    NSMutableString *message = [NSMutableString new];
    for (NSUInteger i = 0; i < 32; i++) {
        [message appendString:@"Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse rutrum, nulla "
                              @"vitae pretium hendrerit, tellus turpis pharetra libero, vitae sodales tortor ante vel "
                              @"sem. Fusce sed nisl a lorem gravida tincidunt. Suspendisse efficitur non quam ac "
                              @"sodales. Aenean ut velit maximus, posuere sem a, accumsan nunc. Donec ullamcorper "
                              @"turpis lorem. Quisque dignissim purus eu placerat ultricies. Proin at urna eget mi "
                              @"semper congue. Aenean non elementum ex. Praesent pharetra quam at sem vestibulum, "
                              @"vestibulum ornare dolor elementum. Vestibulum massa tortor, scelerisque sit amet "
                              @"pulvinar a, rhoncus vitae nisl. Sed mi nunc, tempus at varius in, malesuada vitae "
                              @"dui. Vivamus efficitur pulvinar erat vitae congue. Proin vehicula turpis non felis "
                              @"congue facilisis. Nullam aliquet dapibus ligula ac mollis. Etiam sit amet posuere "
                              @"lorem, in rhoncus nisi.\n\n"];
    }

    DataSource *_Nullable dataSource = [DataSourceValue dataSourceWithOversizeText:message];
    SignalAttachment *attachment =
        [SignalAttachment attachmentWithDataSource:dataSource dataUTI:kOversizeTextAttachmentUTI];
    [ThreadUtil sendMessageWithAttachment:attachment inThread:thread messageSender:messageSender completion:nil];
}

+ (NSData *)createRandomNSDataOfSize:(size_t)size
{
    OWSAssert(size % 4 == 0);

    return [Randomness generateRandomBytes:(int)size];
}

+ (void)sendRandomAttachment:(TSThread *)thread uti:(NSString *)uti
{
    [self sendRandomAttachment:thread uti:uti length:256];
}

+ (NSString *)randomCaptionText
{
    return [NSString stringWithFormat:@"%@ (caption)", [self randomText]];
}

+ (void)sendRandomAttachment:(TSThread *)thread uti:(NSString *)uti length:(NSUInteger)length
{
    OWSMessageSender *messageSender = [Environment current].messageSender;
    DataSource *_Nullable dataSource =
        [DataSourceValue dataSourceWithData:[self createRandomNSDataOfSize:length] utiType:uti];
    SignalAttachment *attachment =
        [SignalAttachment attachmentWithDataSource:dataSource dataUTI:uti imageQuality:TSImageQualityOriginal];

    if (arc4random_uniform(100) > 50) {
        // give 1/2 our attachments captions, and add a hint that it's a caption since we
        // style them indistinguishably from a separate text message.
        attachment.captionText = [self randomCaptionText];
    }
    [ThreadUtil sendMessageWithAttachment:attachment
                                 inThread:thread
                            messageSender:messageSender
                             ignoreErrors:YES
                               completion:nil];
}

+ (OWSSignalServiceProtosEnvelope *)createEnvelopeForThread:(TSThread *)thread
{
    OWSAssert(thread);

    OWSSignalServiceProtosEnvelopeBuilder *builder = [OWSSignalServiceProtosEnvelopeBuilder new];

    if ([thread isKindOfClass:[TSGroupThread class]]) {
        TSGroupThread *gThread = (TSGroupThread *)thread;
        [builder setSource:gThread.groupModel.groupMemberIds[0]];
    } else if ([thread isKindOfClass:[TSContactThread class]]) {
        TSContactThread *contactThread = (TSContactThread *)thread;
        [builder setSource:contactThread.contactIdentifier];
    }

    return [builder build];
}

+ (NSArray<TSInteraction *> *)unsavedSystemMessagesInThread:(TSThread *)thread
{
    OWSAssert(thread);

    NSMutableArray<TSInteraction *> *result = [NSMutableArray new];

    [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
        if ([thread isKindOfClass:[TSContactThread class]]) {
            TSContactThread *contactThread = (TSContactThread *)thread;

            [result addObject:[[TSCall alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                 withCallNumber:@"+19174054215"
                                                       callType:RPRecentCallTypeIncoming
                                                       inThread:contactThread]];
            [result addObject:[[TSCall alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                 withCallNumber:@"+19174054215"
                                                       callType:RPRecentCallTypeOutgoing
                                                       inThread:contactThread]];
            [result addObject:[[TSCall alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                 withCallNumber:@"+19174054215"
                                                       callType:RPRecentCallTypeMissed
                                                       inThread:contactThread]];
            [result addObject:[[TSCall alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                 withCallNumber:@"+19174054215"
                                                       callType:RPRecentCallTypeMissedBecauseOfChangedIdentity
                                                       inThread:contactThread]];
            [result addObject:[[TSCall alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                 withCallNumber:@"+19174054215"
                                                       callType:RPRecentCallTypeOutgoingIncomplete
                                                       inThread:contactThread]];
            [result addObject:[[TSCall alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                 withCallNumber:@"+19174054215"
                                                       callType:RPRecentCallTypeIncomingIncomplete
                                                       inThread:contactThread]];
        }

        {
            NSNumber *durationSeconds = [OWSDisappearingMessagesConfiguration validDurationsSeconds][0];
            OWSDisappearingMessagesConfiguration *disappearingMessagesConfiguration =
                [[OWSDisappearingMessagesConfiguration alloc] initWithThreadId:thread.uniqueId
                                                                       enabled:YES
                                                               durationSeconds:(uint32_t)[durationSeconds intValue]];
            [result addObject:[[OWSDisappearingConfigurationUpdateInfoMessage alloc]
                                    initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                               thread:thread
                                        configuration:disappearingMessagesConfiguration
                                  createdByRemoteName:@"Alice"]];
        }
        {
            NSNumber *durationSeconds = [[OWSDisappearingMessagesConfiguration validDurationsSeconds] lastObject];
            OWSDisappearingMessagesConfiguration *disappearingMessagesConfiguration =
                [[OWSDisappearingMessagesConfiguration alloc] initWithThreadId:thread.uniqueId
                                                                       enabled:YES
                                                               durationSeconds:(uint32_t)[durationSeconds intValue]];
            [result addObject:[[OWSDisappearingConfigurationUpdateInfoMessage alloc]
                                    initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                               thread:thread
                                        configuration:disappearingMessagesConfiguration
                                  createdByRemoteName:@"Alice"]];
        }
        {
            OWSDisappearingMessagesConfiguration *disappearingMessagesConfiguration =
                [[OWSDisappearingMessagesConfiguration alloc] initWithThreadId:thread.uniqueId
                                                                       enabled:NO
                                                               durationSeconds:0];
            [result addObject:[[OWSDisappearingConfigurationUpdateInfoMessage alloc]
                                    initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                               thread:thread
                                        configuration:disappearingMessagesConfiguration
                                  createdByRemoteName:@"Alice"]];
        }

        [result addObject:[TSInfoMessage userNotRegisteredMessageInThread:thread]];

        [result addObject:[[TSInfoMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                          inThread:thread
                                                       messageType:TSInfoMessageTypeSessionDidEnd]];
        // TODO: customMessage?
        [result addObject:[[TSInfoMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                          inThread:thread
                                                       messageType:TSInfoMessageTypeGroupUpdate]];
        // TODO: customMessage?
        [result addObject:[[TSInfoMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                          inThread:thread
                                                       messageType:TSInfoMessageTypeGroupQuit]];

        [result addObject:[[OWSVerificationStateChangeMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                                thread:thread
                                                                           recipientId:@"+19174054215"
                                                                     verificationState:OWSVerificationStateDefault
                                                                         isLocalChange:YES]];
        [result addObject:[[OWSVerificationStateChangeMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                                thread:thread
                                                                           recipientId:@"+19174054215"
                                                                     verificationState:OWSVerificationStateVerified
                                                                         isLocalChange:YES]];
        [result
            addObject:[[OWSVerificationStateChangeMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                            thread:thread
                                                                       recipientId:@"+19174054215"
                                                                 verificationState:OWSVerificationStateNoLongerVerified
                                                                     isLocalChange:YES]];
        [result addObject:[[OWSVerificationStateChangeMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                                thread:thread
                                                                           recipientId:@"+19174054215"
                                                                     verificationState:OWSVerificationStateDefault
                                                                         isLocalChange:NO]];
        [result addObject:[[OWSVerificationStateChangeMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                                thread:thread
                                                                           recipientId:@"+19174054215"
                                                                     verificationState:OWSVerificationStateVerified
                                                                         isLocalChange:NO]];
        [result
            addObject:[[OWSVerificationStateChangeMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                            thread:thread
                                                                       recipientId:@"+19174054215"
                                                                 verificationState:OWSVerificationStateNoLongerVerified
                                                                     isLocalChange:NO]];

        [result addObject:[TSErrorMessage missingSessionWithEnvelope:[self createEnvelopeForThread:thread]
                                                     withTransaction:transaction]];
        [result addObject:[TSErrorMessage invalidKeyExceptionWithEnvelope:[self createEnvelopeForThread:thread]
                                                          withTransaction:transaction]];
        [result addObject:[TSErrorMessage invalidVersionWithEnvelope:[self createEnvelopeForThread:thread]
                                                     withTransaction:transaction]];
        [result addObject:[TSInvalidIdentityKeyReceivingErrorMessage
                              untrustedKeyWithEnvelope:[self createEnvelopeForThread:thread]
                                       withTransaction:transaction]];
        [result addObject:[TSErrorMessage corruptedMessageWithEnvelope:[self createEnvelopeForThread:thread]
                                                       withTransaction:transaction]];

        [result addObject:[[TSErrorMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                           inThread:thread
                                                  failedMessageType:TSErrorMessageNonBlockingIdentityChange
                                                        recipientId:@"+19174054215"]];
    }];

    return result;
}

+ (void)createSystemMessagesInThread:(TSThread *)thread
{
    OWSAssert(thread);

    NSArray<TSInteraction *> *messages = [self unsavedSystemMessagesInThread:thread];
    [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
        for (TSInteraction *message in messages) {
            [message saveWithTransaction:transaction];
        }
    }];
}

+ (void)createSystemMessageInThread:(TSThread *)thread
{
    OWSAssert(thread);

    NSArray<TSInteraction *> *messages = [self unsavedSystemMessagesInThread:thread];
    TSInteraction *message = messages[(NSUInteger)arc4random_uniform((uint32_t)messages.count)];
    [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
        [message saveWithTransaction:transaction];
    }];
}

+ (void)sendTextAndSystemMessages:(NSUInteger)counter thread:(TSThread *)thread
{
    if (counter < 1) {
        return;
    }
    if (arc4random_uniform(2) == 0) {
        [self sendTextMessageInThread:thread counter:counter];
    } else {
        [self createSystemMessageInThread:thread];
    }
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)1.f * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
        [self sendTextAndSystemMessages:counter - 1 thread:thread];
    });
}

+ (NSString *)randomText
{
    NSArray<NSString *> *randomTexts = @[
        @"Lorem ipsum dolor sit amet, consectetur adipiscing elit. ",
        (@"Lorem ipsum dolor sit amet, consectetur adipiscing elit. "
         @"Suspendisse rutrum, nulla vitae pretium hendrerit, tellus "
         @"turpis pharetra libero, vitae sodales tortor ante vel sem."),
        @"In a time of universal deceit - telling the truth is a revolutionary act.",
        @"If you want a vision of the future, imagine a boot stamping on a human face - forever.",
        @"Who controls the past controls the future. Who controls the present controls the past.",
        @"All animals are equal, but some animals are more equal than others.",
        @"War is peace. Freedom is slavery. Ignorance is strength.",
        (@"All the war-propaganda, all the screaming and lies and hatred, comes invariably from people who are not "
         @"fighting."),
        (@"Political language. . . is designed to make lies sound truthful and murder respectable, and to give an "
         @"appearance of solidity to pure wind."),
        (@"The nationalist not only does not disapprove of atrocities committed by his own side, but he has a "
         @"remarkable capacity for not even hearing about them."),
        (@"Every generation imagines itself to be more intelligent than the one that went before it, and wiser than "
         @"the "
         @"one that comes after it."),
        @"War against a foreign country only happens when the moneyed classes think they are going to profit from it.",
        @"People have only as much liberty as they have the intelligence to want and the courage to take.",
        (@"You cannot buy the revolution. You cannot make the revolution. You can only be the revolution. It is in your "
        @"spirit, or it is nowhere."),
        (@"That is what I have always understood to be the essence of anarchism: the conviction that the burden of "
        @"proof has to be placed on authority, and that it should be dismantled if that burden cannot be met."),
        (@"Ask for work. If they don't give you work, ask for bread. If they do not give you work or bread, then take "
        @"bread."),
        @"Every society has the criminals it deserves.",
        (@"Anarchism is founded on the observation that since few men are wise enough to rule themselves, even fewer "
        @"are wise enough to rule others."),
        @"If you would know who controls you see who you may not criticise.",
        @"At one time in the world there were woods that no one owned."
    ];
    NSString *randomText = randomTexts[(NSUInteger)arc4random_uniform((uint32_t)randomTexts.count)];
    return randomText;
}

+ (void)createFakeUnreadMessages:(NSUInteger)counter thread:(TSThread *)thread
{
    [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
        for (NSUInteger i = 0; i < counter; i++) {
            NSString *randomText = [self randomText];
            TSIncomingMessage *message = [[TSIncomingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                             inThread:thread
                                                                             authorId:@"+19174054215"
                                                                       sourceDeviceId:0
                                                                          messageBody:randomText];
            [message saveWithTransaction:transaction];
        }
    }];
}

+ (void)createFakeThreads:(NSUInteger)threadCount withFakeMessages:(NSUInteger)messageCount
{
    [DebugUIContacts
        createRandomContacts:threadCount
              contactHandler:^(CNContact *_Nonnull contact, NSUInteger idx, BOOL *_Nonnull stop) {
                  NSString *phoneNumberText = contact.phoneNumbers.firstObject.value.stringValue;
                  OWSAssert(phoneNumberText);
                  PhoneNumber *phoneNumber = [PhoneNumber tryParsePhoneNumberFromUserSpecifiedText:phoneNumberText];
                  OWSAssert(phoneNumber);
                  OWSAssert(phoneNumber.toE164);

                  TSContactThread *contactThread = [TSContactThread getOrCreateThreadWithContactId:phoneNumber.toE164];
                  [self sendFakeMessages:messageCount thread:contactThread];
                  DDLogError(@"Create fake thread: %@, interactions: %zd",
                      phoneNumber.toE164,
                      contactThread.numberOfInteractions);
              }];
}

+ (void)sendFakeMessages:(NSUInteger)counter thread:(TSThread *)thread
{
    [self sendFakeMessages:counter thread:thread isTextOnly:NO];
}

+ (void)sendFakeMessages:(NSUInteger)counter thread:(TSThread *)thread isTextOnly:(BOOL)isTextOnly
{
    const NSUInteger kMaxBatchSize = 2500;
    if (counter < kMaxBatchSize) {
        [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
            [self sendFakeMessages:counter thread:thread isTextOnly:isTextOnly transaction:transaction];
        }];
    } else {
        dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
            NSUInteger remainder = counter;
            while (remainder > 0) {
                NSUInteger batchSize = MIN(kMaxBatchSize, remainder);
                [OWSPrimaryStorage.dbReadWriteConnection
                    readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
                        [self sendFakeMessages:batchSize thread:thread isTextOnly:isTextOnly transaction:transaction];
                    }];
                remainder -= batchSize;
                DDLogInfo(@"%@ sendFakeMessages %zd / %zd", self.logTag, counter - remainder, counter);
            }
        });
    }
}

+ (void)sendFakeMessages:(NSUInteger)counter
                  thread:(TSThread *)thread
              isTextOnly:(BOOL)isTextOnly
             transaction:(YapDatabaseReadWriteTransaction *)transaction
{
    DDLogInfo(@"%@ sendFakeMessages: %zd", self.logTag, counter);

    for (NSUInteger i = 0; i < counter; i++) {
        NSString *randomText = [self randomText];
        switch (arc4random_uniform(isTextOnly ? 2 : 4)) {
            case 0: {
                TSIncomingMessage *message =
                    [[TSIncomingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                        inThread:thread
                                                        authorId:@"+19174054215"
                                                  sourceDeviceId:0
                                                     messageBody:randomText];
                [message markAsReadWithTransaction:transaction sendReadReceipt:NO updateExpiration:NO];
                break;
            }
            case 1: {
                TSOutgoingMessage *message =
                    [[TSOutgoingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                        inThread:thread
                                                     messageBody:randomText];
                [message saveWithTransaction:transaction];
                [message updateWithMessageState:TSOutgoingMessageStateUnsent transaction:transaction];
                break;
            }
            case 2: {
                UInt32 filesize = 64;
                TSAttachmentPointer *pointer =
                    [[TSAttachmentPointer alloc] initWithServerId:237391539706350548
                                                              key:[self createRandomNSDataOfSize:filesize]
                                                           digest:nil
                                                        byteCount:filesize
                                                      contentType:@"audio/mp3"
                                                            relay:@""
                                                   sourceFilename:@"test.mp3"
                                                   attachmentType:TSAttachmentTypeDefault];
                pointer.state = TSAttachmentPointerStateFailed;
                [pointer saveWithTransaction:transaction];
                TSIncomingMessage *message =
                    [[TSIncomingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                        inThread:thread
                                                        authorId:@"+19174054215"
                                                  sourceDeviceId:0
                                                     messageBody:nil
                                                   attachmentIds:@[
                                                       pointer.uniqueId,
                                                   ]
                                                expiresInSeconds:0];
                [message markAsReadWithTransaction:transaction sendReadReceipt:NO updateExpiration:NO];
                break;
            }
            case 3: {
                TSOutgoingMessage *message =
                    [[TSOutgoingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                        inThread:thread
                                                     messageBody:nil
                                                  isVoiceMessage:NO
                                                expiresInSeconds:0];

                NSString *filename = @"test.mp3";
                UInt32 filesize = 16;

                TSAttachmentStream *attachmentStream = [[TSAttachmentStream alloc] initWithContentType:@"audio/mp3"
                                                                                             byteCount:filesize
                                                                                        sourceFilename:filename];

                NSError *error;
                BOOL success = [attachmentStream writeData:[self createRandomNSDataOfSize:filesize] error:&error];
                OWSAssert(success && !error);

                [attachmentStream saveWithTransaction:transaction];
                [message.attachmentIds addObject:attachmentStream.uniqueId];
                if (filename) {
                    message.attachmentFilenameMap[attachmentStream.uniqueId] = filename;
                }
                [message saveWithTransaction:transaction];
                [message updateWithMessageState:TSOutgoingMessageStateUnsent transaction:transaction];
                break;
            }
        }
    }
}

#pragma mark -

+ (void)createFakeLargeOutgoingAttachments:(NSUInteger)counter thread:(TSThread *)thread
{
    if (counter < 1) {
        return;
    }

    [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
        TSOutgoingMessage *message = [[TSOutgoingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                         inThread:thread
                                                                      messageBody:nil
                                                                   isVoiceMessage:NO
                                                                 expiresInSeconds:0];
        DDLogError(@"%@ sendFakeMessages outgoing attachment timestamp: %llu.", self.logTag, message.timestamp);

        NSString *filename = @"test.mp3";
        UInt32 filesize = 8 * 1024 * 1024;

        TSAttachmentStream *attachmentStream =
            [[TSAttachmentStream alloc] initWithContentType:@"audio/mp3" byteCount:filesize sourceFilename:filename];

        NSError *error;
        BOOL success = [attachmentStream writeData:[self createRandomNSDataOfSize:filesize] error:&error];
        OWSAssert(success && !error);

        [attachmentStream saveWithTransaction:transaction];
        [message.attachmentIds addObject:attachmentStream.uniqueId];
        if (filename) {
            message.attachmentFilenameMap[attachmentStream.uniqueId] = filename;
        }
        [message updateWithMessageState:TSOutgoingMessageStateUnsent transaction:transaction];
        [message saveWithTransaction:transaction];
    }];

    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        [self createFakeLargeOutgoingAttachments:counter - 1 thread:thread];
    });
}

+ (void)sendTinyAttachments:(NSUInteger)counter thread:(TSThread *)thread
{
    if (counter < 1) {
        return;
    }

    NSArray<NSString *> *utis = @[
        (NSString *)kUTTypePDF,
        (NSString *)kUTTypeMP3,
        (NSString *)kUTTypeGIF,
        (NSString *)kUTTypeMPEG4,
        (NSString *)kUTTypeJPEG,
    ];
    NSString *uti = utis[(NSUInteger)arc4random_uniform((uint32_t)utis.count)];
    [self sendRandomAttachment:thread uti:uti length:16];

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)1.f * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
        [self sendTinyAttachments:counter - 1 thread:thread];
    });
}

+ (void)createNewGroups:(NSUInteger)counter recipientId:(NSString *)recipientId
{
    if (counter < 1) {
        return;
    }

    NSString *groupName = [NSUUID UUID].UUIDString;
    NSMutableArray<NSString *> *recipientIds = [@[
        recipientId,
        [TSAccountManager localNumber],
    ] mutableCopy];
    NSData *groupId = [SecurityUtils generateRandomBytes:16];
    TSGroupModel *groupModel =
        [[TSGroupModel alloc] initWithTitle:groupName memberIds:recipientIds image:nil groupId:groupId];

    __block TSGroupThread *thread;
    [OWSPrimaryStorage.dbReadWriteConnection
        readWriteWithBlock:^(YapDatabaseReadWriteTransaction *_Nonnull transaction) {
            thread = [TSGroupThread getOrCreateThreadWithGroupModel:groupModel transaction:transaction];
        }];
    OWSAssert(thread);

    TSOutgoingMessage *message = [[TSOutgoingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                                     inThread:thread
                                                             groupMetaMessage:TSGroupMessageNew];
    [message updateWithCustomMessage:NSLocalizedString(@"GROUP_CREATED", nil)];

    OWSMessageSender *messageSender = [Environment current].messageSender;
    void (^completion)(void) = ^{
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)1.f * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
            [ThreadUtil sendMessageWithText:[@(counter) description] inThread:thread messageSender:messageSender];
            dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)1.f * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
                [self createNewGroups:counter - 1 recipientId:recipientId];
            });
        });
    };
    [messageSender enqueueMessage:message
                          success:completion
                          failure:^(NSError *error) {
                              completion();
                          }];
}

+ (void)injectFakeIncomingMessages:(NSUInteger)counter thread:(TSThread *)thread
{
    // Wait 5 seconds so debug user has time to navigate to another
    // view before message processing occurs.
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(5.f * NSEC_PER_SEC)),
        dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),
        ^{
            for (NSUInteger i = 0; i < counter; i++) {
                [self injectIncomingMessageInThread:thread counter:counter - i];
            }
        });
}

+ (void)injectIncomingMessageInThread:(TSThread *)thread counter:(NSUInteger)counter
{
    OWSAssert(thread);

    DDLogInfo(@"%@ injectIncomingMessageInThread: %zd", self.logTag, counter);

    NSString *randomText = [self randomText];
    NSString *text = [[[@(counter) description] stringByAppendingString:@" "] stringByAppendingString:randomText];

    OWSSignalServiceProtosDataMessageBuilder *dataMessageBuilder = [OWSSignalServiceProtosDataMessageBuilder new];
    [dataMessageBuilder setBody:text];

    if ([thread isKindOfClass:[TSGroupThread class]]) {
        TSGroupThread *groupThread = (TSGroupThread *)thread;
        OWSSignalServiceProtosGroupContextBuilder *groupBuilder = [OWSSignalServiceProtosGroupContextBuilder new];
        [groupBuilder setType:OWSSignalServiceProtosGroupContextTypeDeliver];
        [groupBuilder setId:groupThread.groupModel.groupId];
        [dataMessageBuilder setGroup:groupBuilder.build];
    }

    OWSSignalServiceProtosContentBuilder *payloadBuilder = [OWSSignalServiceProtosContentBuilder new];
    [payloadBuilder setDataMessage:dataMessageBuilder.build];
    NSData *plaintextData = [payloadBuilder build].data;

    // Try to use an arbitrary member of the current thread that isn't
    // ourselves as the sender.
    NSString *_Nullable recipientId = [[thread recipientIdentifiers] firstObject];
    // This might be an "empty" group with no other members.  If so, use a fake
    // sender id.
    if (!recipientId) {
        recipientId = @"+12345678901";
    }

    OWSSignalServiceProtosEnvelopeBuilder *envelopeBuilder = [OWSSignalServiceProtosEnvelopeBuilder new];
    [envelopeBuilder setType:OWSSignalServiceProtosEnvelopeTypeCiphertext];
    [envelopeBuilder setSource:recipientId];
    [envelopeBuilder setSourceDevice:1];
    [envelopeBuilder setTimestamp:[NSDate ows_millisecondTimeStamp]];
    [envelopeBuilder setContent:plaintextData];

    NSData *envelopeData = [envelopeBuilder build].data;
    OWSAssert(envelopeData);

    [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
        [[OWSBatchMessageProcessor sharedInstance] enqueueEnvelopeData:envelopeData
                                                         plaintextData:plaintextData
                                                           transaction:transaction];
    }];
}

+ (void)performRandomActions:(NSUInteger)counter thread:(TSThread *)thread
{
    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.f * NSEC_PER_SEC)),
                   dispatch_get_main_queue(),
                   ^{
                       [self performRandomActionInThread:thread counter:counter];
                       if (counter > 0) {
                           [self performRandomActions:counter - 1 thread:thread];
                       }
                   });
}

//+ (ActionBlock)sendTextMessagesActionInThread:(TSThread *)thread
//{
//    OWSAssert(thread);
//
//    return ^(NSUInteger index, ActionSuccessBlock success, ActionFailureBlock failure) {
//        [self sendTextMessageInThread:thread counter:index];
//        // TODO:
//        success();
//    };
//}
//
//+ (void)performRandomActionInThread:(TSThread *)thread counter:(NSUInteger)counter
//{
//}

+ (void)performRandomActionInThread:(TSThread *)thread counter:(NSUInteger)counter
{
    typedef void (^TransactionBlock)(YapDatabaseReadWriteTransaction *transaction);
    NSArray<TransactionBlock> *actionBlocks = @[
        ^(YapDatabaseReadWriteTransaction *transaction) {
            // injectIncomingMessageInThread doesn't take a transaction.
            dispatch_async(dispatch_get_main_queue(), ^{
                [self injectIncomingMessageInThread:thread counter:counter];
            });
        },
        ^(YapDatabaseReadWriteTransaction *transaction) {
            // sendTextMessageInThread doesn't take a transaction.
            dispatch_async(dispatch_get_main_queue(), ^{
                [self sendTextMessageInThread:thread counter:counter];
            });
        },
        ^(YapDatabaseReadWriteTransaction *transaction) {
            NSUInteger messageCount = (NSUInteger)(1 + arc4random_uniform(4));
            [self sendFakeMessages:messageCount thread:thread isTextOnly:NO transaction:transaction];
        },
        ^(YapDatabaseReadWriteTransaction *transaction) {
            NSUInteger messageCount = (NSUInteger)(1 + arc4random_uniform(4));
            [self deleteRandomMessages:messageCount thread:thread transaction:transaction];
        },
        ^(YapDatabaseReadWriteTransaction *transaction) {
            NSUInteger messageCount = (NSUInteger)(1 + arc4random_uniform(4));
            [self deleteLastMessages:messageCount thread:thread transaction:transaction];
        },
        ^(YapDatabaseReadWriteTransaction *transaction) {
            NSUInteger messageCount = (NSUInteger)(1 + arc4random_uniform(4));
            [self deleteRandomRecentMessages:messageCount thread:thread transaction:transaction];
        },
        ^(YapDatabaseReadWriteTransaction *transaction) {
            NSUInteger messageCount = (NSUInteger)(1 + arc4random_uniform(4));
            [self insertAndDeleteNewOutgoingMessages:messageCount thread:thread transaction:transaction];
        },
        ^(YapDatabaseReadWriteTransaction *transaction) {
            NSUInteger messageCount = (NSUInteger)(1 + arc4random_uniform(4));
            [self resurrectNewOutgoingMessages1:messageCount thread:thread transaction:transaction];
        },
        ^(YapDatabaseReadWriteTransaction *transaction) {
            NSUInteger messageCount = (NSUInteger)(1 + arc4random_uniform(4));
            [self resurrectNewOutgoingMessages2:messageCount thread:thread transaction:transaction];
        },
    ];
    [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
        NSUInteger actionCount = 1 + (NSUInteger)arc4random_uniform(3);
        for (NSUInteger actionIdx = 0; actionIdx < actionCount; actionIdx++) {
            TransactionBlock actionBlock = actionBlocks[(NSUInteger)arc4random_uniform((uint32_t)actionBlocks.count)];
            actionBlock(transaction);
        }
    }];
}

+ (void)deleteRandomMessages:(NSUInteger)count
                      thread:(TSThread *)thread
                 transaction:(YapDatabaseReadWriteTransaction *)transaction
{
    DDLogInfo(@"%@ deleteRandomMessages: %zd", self.logTag, count);

    YapDatabaseViewTransaction *interactionsByThread = [transaction ext:TSMessageDatabaseViewExtensionName];
    NSUInteger messageCount = [interactionsByThread numberOfItemsInGroup:thread.uniqueId];

    NSMutableArray<NSNumber *> *messageIndices = [NSMutableArray new];
    for (NSUInteger messageIdx = 0; messageIdx < messageCount; messageIdx++) {
        [messageIndices addObject:@(messageIdx)];
    }
    NSMutableArray<TSInteraction *> *interactions = [NSMutableArray new];
    for (NSUInteger i = 0; i < count && messageIndices.count > 0; i++) {
        NSUInteger idx = (NSUInteger)arc4random_uniform((uint32_t)messageIndices.count);
        NSNumber *messageIdx = messageIndices[idx];
        [messageIndices removeObjectAtIndex:idx];

        TSInteraction *_Nullable interaction =
            [interactionsByThread objectAtIndex:messageIdx.unsignedIntegerValue inGroup:thread.uniqueId];
        OWSAssert(interaction);
        [interactions addObject:interaction];
    }

    for (TSInteraction *interaction in interactions) {
        [interaction removeWithTransaction:transaction];
    }
}

+ (void)deleteLastMessages:(NSUInteger)count
                    thread:(TSThread *)thread
               transaction:(YapDatabaseReadWriteTransaction *)transaction
{
    DDLogInfo(@"%@ deleteLastMessages", self.logTag);

    YapDatabaseViewTransaction *interactionsByThread = [transaction ext:TSMessageDatabaseViewExtensionName];
    NSUInteger messageCount = (NSUInteger)[interactionsByThread numberOfItemsInGroup:thread.uniqueId];

    NSMutableArray<NSNumber *> *messageIndices = [NSMutableArray new];
    for (NSUInteger i = 0; i < count && i < messageCount; i++) {
        NSUInteger messageIdx = messageCount - (1 + i);
        [messageIndices addObject:@(messageIdx)];
    }
    NSMutableArray<TSInteraction *> *interactions = [NSMutableArray new];
    for (NSNumber *messageIdx in messageIndices) {
        TSInteraction *_Nullable interaction =
            [interactionsByThread objectAtIndex:messageIdx.unsignedIntegerValue inGroup:thread.uniqueId];
        OWSAssert(interaction);
        [interactions addObject:interaction];
    }
    for (TSInteraction *interaction in interactions) {
        [interaction removeWithTransaction:transaction];
    }
}

+ (void)deleteRandomRecentMessages:(NSUInteger)count
                            thread:(TSThread *)thread
                       transaction:(YapDatabaseReadWriteTransaction *)transaction
{
    DDLogInfo(@"%@ deleteRandomRecentMessages: %zd", self.logTag, count);

    YapDatabaseViewTransaction *interactionsByThread = [transaction ext:TSMessageDatabaseViewExtensionName];
    NSInteger messageCount = (NSInteger)[interactionsByThread numberOfItemsInGroup:thread.uniqueId];

    NSMutableArray<NSNumber *> *messageIndices = [NSMutableArray new];
    const NSInteger kRecentMessageCount = 10;
    for (NSInteger i = 0; i < kRecentMessageCount; i++) {
        NSInteger messageIdx = messageCount - (1 + i);
        if (messageIdx >= 0) {
            [messageIndices addObject:@(messageIdx)];
        }
    }
    NSMutableArray<TSInteraction *> *interactions = [NSMutableArray new];
    for (NSUInteger i = 0; i < count && messageIndices.count > 0; i++) {
        NSUInteger idx = (NSUInteger)arc4random_uniform((uint32_t)messageIndices.count);
        NSNumber *messageIdx = messageIndices[idx];
        [messageIndices removeObjectAtIndex:idx];

        TSInteraction *_Nullable interaction =
            [interactionsByThread objectAtIndex:messageIdx.unsignedIntegerValue inGroup:thread.uniqueId];
        OWSAssert(interaction);
        [interactions addObject:interaction];
    }
    for (TSInteraction *interaction in interactions) {
        [interaction removeWithTransaction:transaction];
    }
}

+ (void)insertAndDeleteNewOutgoingMessages:(NSUInteger)count
                                    thread:(TSThread *)thread
                               transaction:(YapDatabaseReadWriteTransaction *)transaction
{
    DDLogInfo(@"%@ insertAndDeleteNewOutgoingMessages: %zd", self.logTag, count);

    NSMutableArray<TSOutgoingMessage *> *messages = [NSMutableArray new];
    for (NSUInteger i =0; i < count; i++) {
        NSString *text = [self randomText];
        OWSDisappearingMessagesConfiguration *configuration =
            [OWSDisappearingMessagesConfiguration fetchObjectWithUniqueID:thread.uniqueId transaction:transaction];
        TSOutgoingMessage *message =
        [[TSOutgoingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                            inThread:thread
                                         messageBody:text
                                       attachmentIds:[NSMutableArray new]
                                    expiresInSeconds:(configuration.isEnabled ? configuration.durationSeconds : 0)];
        DDLogError(@"%@ insertAndDeleteNewOutgoingMessages timestamp: %llu.", self.logTag, message.timestamp);
        [messages addObject:message];
    }

    for (TSOutgoingMessage *message in messages) {
        [message saveWithTransaction:transaction];
    }
    for (TSOutgoingMessage *message in messages) {
        [message removeWithTransaction:transaction];
    }
}

+ (void)resurrectNewOutgoingMessages1:(NSUInteger)count
                               thread:(TSThread *)thread
                          transaction:(YapDatabaseReadWriteTransaction *)initialTransaction
{
    DDLogInfo(@"%@ resurrectNewOutgoingMessages1.1: %zd", self.logTag, count);

    NSMutableArray<TSOutgoingMessage *> *messages = [NSMutableArray new];
    for (NSUInteger i =0; i < count; i++) {
        NSString *text = [self randomText];
        OWSDisappearingMessagesConfiguration *configuration =
            [OWSDisappearingMessagesConfiguration fetchObjectWithUniqueID:thread.uniqueId
                                                              transaction:initialTransaction];
        TSOutgoingMessage *message =
        [[TSOutgoingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                            inThread:thread
                                         messageBody:text
                                       attachmentIds:[NSMutableArray new]
                                    expiresInSeconds:(configuration.isEnabled ? configuration.durationSeconds : 0)];
        DDLogError(@"%@ resurrectNewOutgoingMessages1 timestamp: %llu.", self.logTag, message.timestamp);
        [messages addObject:message];
    }

    for (TSOutgoingMessage *message in messages) {
        [message saveWithTransaction:initialTransaction];
    }

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        DDLogInfo(@"%@ resurrectNewOutgoingMessages1.2: %zd", self.logTag, count);
        [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
            for (TSOutgoingMessage *message in messages) {
                [message removeWithTransaction:transaction];
            }
            for (TSOutgoingMessage *message in messages) {
                [message saveWithTransaction:transaction];
            }
        }];
    });
}

+ (void)resurrectNewOutgoingMessages2:(NSUInteger)count
                               thread:(TSThread *)thread
                          transaction:(YapDatabaseReadWriteTransaction *)initialTransaction
{
    DDLogInfo(@"%@ resurrectNewOutgoingMessages2.1: %zd", self.logTag, count);

    NSMutableArray<TSOutgoingMessage *> *messages = [NSMutableArray new];
    for (NSUInteger i =0; i < count; i++) {
        NSString *text = [self randomText];
        OWSDisappearingMessagesConfiguration *configuration =
            [OWSDisappearingMessagesConfiguration fetchObjectWithUniqueID:thread.uniqueId
                                                              transaction:initialTransaction];
        TSOutgoingMessage *message =
        [[TSOutgoingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                            inThread:thread
                                         messageBody:text
                                       attachmentIds:[NSMutableArray new]
                                    expiresInSeconds:(configuration.isEnabled ? configuration.durationSeconds : 0)];
        DDLogError(@"%@ resurrectNewOutgoingMessages2 timestamp: %llu.", self.logTag, message.timestamp);
        [messages addObject:message];
    }

    for (TSOutgoingMessage *message in messages) {
        [message updateWithMessageState:TSOutgoingMessageStateAttemptingOut transaction:initialTransaction];
        [message saveWithTransaction:initialTransaction];
    }

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        DDLogInfo(@"%@ resurrectNewOutgoingMessages2.2: %zd", self.logTag, count);
        [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
            for (TSOutgoingMessage *message in messages) {
                [message removeWithTransaction:transaction];
            }
        }];
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.f * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            DDLogInfo(@"%@ resurrectNewOutgoingMessages2.3: %zd", self.logTag, count);
            [OWSPrimaryStorage.dbReadWriteConnection
                readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
                    for (TSOutgoingMessage *message in messages) {
                        [message saveWithTransaction:transaction];
                    }
                }];
        });
    });
}

+ (void)createTimestampMessagesInThread:(TSThread *)thread
{
    OWSAssert(thread);

    long long now = (long long)[NSDate ows_millisecondTimeStamp];
    NSArray<NSNumber *> *timestamps = @[
        @(now + 1 * (long long)kHourInMs),
        @(now),
        @(now - 1 * (long long)kHourInMs),
        @(now - 12 * (long long)kHourInMs),
        @(now - 1 * (long long)kDayInMs),
        @(now - 2 * (long long)kDayInMs),
        @(now - 3 * (long long)kDayInMs),
        @(now - 6 * (long long)kDayInMs),
        @(now - 7 * (long long)kDayInMs),
        @(now - 8 * (long long)kDayInMs),
        @(now - 2 * (long long)kWeekInMs),
        @(now - 1 * (long long)kMonthInMs),
        @(now - 2 * (long long)kMonthInMs),
    ];
    NSMutableArray<NSString *> *recipientIds = [thread.recipientIdentifiers mutableCopy];
    [recipientIds removeObject:[TSAccountManager localNumber]];
    NSString *recipientId = (recipientIds.count > 0 ? recipientIds.firstObject : @"+19174054215");

    [OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
        for (NSNumber *timestamp in timestamps) {
            NSString *randomText = [self randomText];
            {
                TSIncomingMessage *message =
                    [[TSIncomingMessage alloc] initWithTimestamp:timestamp.unsignedLongLongValue
                                                        inThread:thread
                                                        authorId:recipientId
                                                  sourceDeviceId:0
                                                     messageBody:randomText];
                [message markAsReadWithTransaction:transaction sendReadReceipt:NO updateExpiration:NO];
            }
            {
                TSOutgoingMessage *message =
                    [[TSOutgoingMessage alloc] initWithTimestamp:timestamp.unsignedLongLongValue
                                                        inThread:thread
                                                     messageBody:randomText];
                [message saveWithTransaction:transaction];
                [message updateWithMessageState:TSOutgoingMessageStateSentToService transaction:transaction];
                [message updateWithSentRecipient:recipientId transaction:transaction];
                [message updateWithDeliveredToRecipientId:recipientId
                                        deliveryTimestamp:timestamp
                                              transaction:transaction];
                [message updateWithReadRecipientId:recipientId
                                     readTimestamp:timestamp.unsignedLongLongValue
                                       transaction:transaction];
            }
        }
    }];
}

+ (void)testIndicScriptsInThread:(TSThread *)thread
{
    NSArray<NSString *> *strings = @[
        @"\u0C1C\u0C4D\u0C1E\u200C\u0C3E",
        @"\u09B8\u09CD\u09B0\u200C\u09C1",
        @"non-crashing string",
    ];

    [OWSPrimaryStorage.sharedManager.dbReadWriteConnection
        readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
            for (NSString *string in strings) {
                // DO NOT log these strings with the debugger attached.
                //        DDLogInfo(@"%@ %@", self.logTag, string);

                {
                    TSIncomingMessage *message =
                        [[TSIncomingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                            inThread:thread
                                                            authorId:@"+19174054215"
                                                      sourceDeviceId:0
                                                         messageBody:string];
                    [message saveWithTransaction:transaction];
                    [message markAsReadWithTransaction:transaction sendReadReceipt:NO updateExpiration:NO];
                }
                {
                    NSString *recipientId = @"+19174054215";
                    NSString *groupName = string;
                    NSMutableArray<NSString *> *recipientIds = [@[
                        recipientId,
                        [TSAccountManager localNumber],
                    ] mutableCopy];
                    NSData *groupId = [SecurityUtils generateRandomBytes:16];
                    TSGroupModel *groupModel =
                        [[TSGroupModel alloc] initWithTitle:groupName memberIds:recipientIds image:nil groupId:groupId];

                    TSGroupThread *groupThread =
                        [TSGroupThread getOrCreateThreadWithGroupModel:groupModel transaction:transaction];
                    OWSAssert(groupThread);
                }
            }
        }];
}

+ (void)testZalgoTextInThread:(TSThread *)thread
{
    NSArray<NSString *> *strings = @[
        @"Ṱ̴̤̺̣͚͚̭̰̤̮̑̓̀͂͘͡h̵̢̤͔̼̗̦̖̬͌̀͒̀͘i̴̮̤͎͎̝̖̻͓̅̆͆̓̎͘͡ͅŝ̡̡̳͔̓͗̾̀̇͒͘͢͢͡͡ ỉ̛̲̩̫̝͉̀̒͐͋̾͘͢͡͞s̶̨̫̞̜̹͛́̇͑̅̒̊̈ s̵͍̲̗̠̗͈̦̬̉̿͂̏̐͆̾͐͊̾ǫ̶͍̼̝̉͊̉͢͜͞͝ͅͅṁ̵̡̨̬̤̝͔̣̄̍̋͊̿̄͋̈ͅe̪̪̻̱͖͚͈̲̍̃͘͠͝ z̷̢̢̛̩̦̱̺̼͑́̉̾ą͕͎̠̮̹̱̓̔̓̈̈́̅̐͢l̵̨͚̜͉̟̜͉͎̃͆͆͒͑̍̈̚͜͞ğ͔̖̫̞͎͍̒̂́̒̿̽̆͟o̶̢̬͚̘̤̪͇̻̒̋̇̊̏͢͡͡͠ͅ t̡̛̥̦̪̮̅̓̑̈́̉̓̽͛͢͡ȩ̡̩͓͈̩͎͗̔͑̌̓͊͆͝x̫̦͓̤͓̘̝̪͊̆͌͊̽̃̏͒͘͘͢ẗ̶̢̨̛̰̯͕͔́̐͗͌͟͠.̷̩̼̼̩̞̘̪́͗̅͊̎̾̅̏̀̕͟ͅ",
        @"This is some normal text",
    ];

    [OWSPrimaryStorage.sharedManager.dbReadWriteConnection
        readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
            for (NSString *string in strings) {
                DDLogInfo(@"%@ sending zalgo", self.logTag);

                {
                    TSIncomingMessage *message =
                        [[TSIncomingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                                            inThread:thread
                                                            authorId:@"+19174054215"
                                                      sourceDeviceId:0
                                                         messageBody:string];
                    [message saveWithTransaction:transaction];
                    [message markAsReadWithTransaction:transaction sendReadReceipt:NO updateExpiration:NO];
                }
                {
                    NSString *recipientId = @"+19174054215";
                    NSString *groupName = string;
                    NSMutableArray<NSString *> *recipientIds = [@[
                        recipientId,
                        [TSAccountManager localNumber],
                    ] mutableCopy];
                    NSData *groupId = [SecurityUtils generateRandomBytes:16];
                    TSGroupModel *groupModel =
                        [[TSGroupModel alloc] initWithTitle:groupName memberIds:recipientIds image:nil groupId:groupId];

                    TSGroupThread *groupThread =
                        [TSGroupThread getOrCreateThreadWithGroupModel:groupModel transaction:transaction];
                    OWSAssert(groupThread);
                }
            }
        }];
}

+ (void)testDirectionalFilenamesInThread:(TSThread *)thread
{
    NSMutableArray<NSString *> *filenames = [@[
        @"a_test\u202Dabc.exe",
        @"b_test\u202Eabc.exe",
        @"c_testabc.exe",
    ] mutableCopy];
    __block void (^sendUnsafeFile)(void);
    sendUnsafeFile = ^{
        if (filenames.count < 1) {
            return;
        }
        NSString *filename = filenames.lastObject;
        [filenames removeLastObject];
        OWSMessageSender *messageSender = [Environment current].messageSender;
        NSString *utiType = (NSString *)kUTTypeData;
        const NSUInteger kDataLength = 32;
        DataSource *_Nullable dataSource =
            [DataSourceValue dataSourceWithData:[self createRandomNSDataOfSize:kDataLength] utiType:utiType];
        [dataSource setSourceFilename:filename];
        SignalAttachment *attachment =
            [SignalAttachment attachmentWithDataSource:dataSource dataUTI:utiType imageQuality:TSImageQualityOriginal];

        OWSAssert(attachment);
        if ([attachment hasError]) {
            DDLogError(@"attachment[%@]: %@", [attachment sourceFilename], [attachment errorName]);
            [DDLog flushLog];
        }
        OWSAssert(![attachment hasError]);
        [ThreadUtil sendMessageWithAttachment:attachment inThread:thread messageSender:messageSender completion:nil];

        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, 1 * NSEC_PER_SEC), dispatch_get_main_queue(), ^{
            sendUnsafeFile();
        });
    };
}

@end

NS_ASSUME_NONNULL_END