// Source: https://github.com/signalapp/libsignal-service-java/blob/4684a49b2ed8f32be619e0d0eea423626b6cb2cb/protobuf/SignalService.proto
package signalservice;

option java_package = "org.whispersystems.signalservice.internal.push";
option java_outer_classname = "SignalServiceProtos";

message Envelope {
  enum Type {
    UNKNOWN       = 0;
    CIPHERTEXT    = 1;
    KEY_EXCHANGE  = 2;
    PREKEY_BUNDLE = 3; //This field is used by Signal. DO NOT TOUCH!.
    RECEIPT       = 5;
    UNIDENTIFIED_SENDER = 6;
    MEDIUM_GROUP_CIPHERTEXT = 7;
    FALLBACK_MESSAGE = 101; // Custom Encryption for when we don't have a session or we need to establish a session
  }

  optional Type   type            = 1;
  optional string source          = 2;
  optional uint32 sourceDevice    = 7;
  optional string relay           = 3;
  optional uint64 timestamp       = 5;
  optional bytes  legacyMessage   = 6; // Contains an encrypted DataMessage
  optional bytes  content         = 8; // Contains an encrypted Content
  optional string serverGuid      = 9;
  optional uint64 serverTimestamp = 10;

}

message Content {
  optional DataMessage    dataMessage    = 1;
  optional SyncMessage    syncMessage    = 2;
  optional CallMessage    callMessage    = 3;
  optional NullMessage    nullMessage    = 4;
  optional ReceiptMessage receiptMessage = 5;
  optional TypingMessage  typingMessage  = 6;
  optional PreKeyBundleMessage preKeyBundleMessage = 101; // The presence of this indicated that we want to establish a new session (Session Request)
  optional LokiAddressMessage lokiAddressMessage = 102;
  optional PairingAuthorisationMessage pairingAuthorisation = 103;
}

message MediumGroupCiphertext {
  optional bytes ciphertext = 1;
  optional bytes source = 2;
  optional uint32 keyIdx = 3;
}

message MediumGroupContent {
  optional bytes ciphertext = 1;
  optional bytes ephemeralKey = 2;
}

message MediumGroupUpdate {
    enum Type {
        NEW        = 0; // groupPublicKey, name, senderKeys, members, admins, groupPrivateKey
        INFO       = 1; // groupPublicKey, name, senderKeys, members, admins
        SENDER_KEY_REQUEST = 2; // groupPublicKey
        SENDER_KEY = 3; // groupPublicKey, senderKeys
    }

    message SenderKey {
        optional bytes  chainKey  = 1;
        optional uint32 keyIndex  = 2;
        optional bytes publicKey = 3;
    }

    optional string    name            = 1;
    optional bytes     groupPublicKey  = 2;
    optional bytes     groupPrivateKey = 3;
    repeated SenderKey senderKeys      = 4;
    repeated bytes     members         = 5;
    repeated bytes     admins          = 6;
    optional Type      type            = 7;
}

message LokiAddressMessage {
  enum Type {
    HOST_REACHABLE = 0;
    HOST_UNREACHABLE = 1;
  }
  optional string p2pAddress    = 1;
  optional uint32 p2pPort       = 2;
  optional Type   type          = 3;
}

message PairingAuthorisationMessage {
  optional string primaryDevicePubKey   = 1;
  optional string secondaryDevicePubKey = 2;
  optional bytes  requestSignature      = 3;
  optional bytes  grantSignature        = 4;
}

message PreKeyBundleMessage {
  optional bytes identityKey      = 1;
  optional uint32 deviceId        = 2;
  optional uint32 preKeyId        = 3;
  optional uint32 signedKeyId     = 4;
  optional bytes preKey           = 5;
  optional bytes signedKey        = 6;
  optional bytes signature        = 7;
}

message CallMessage {
  message Offer {
    optional uint64 id          = 1;
    optional string description = 2;
  }

  message Answer {
    optional uint64 id          = 1;
    optional string description = 2;
  }

  message IceUpdate {
    optional uint64 id            = 1;
    optional string sdpMid        = 2;
    optional uint32 sdpMLineIndex = 3;
    optional string sdp           = 4;
  }

  message Busy {
    optional uint64 id = 1;
  }

  message Hangup {
    optional uint64 id = 1;
  }


  optional Offer     offer     = 1;
  optional Answer    answer    = 2;
  repeated IceUpdate iceUpdate = 3;
  optional Hangup    hangup    = 4;
  optional Busy      busy      = 5;
}

message DataMessage {
  enum Flags {
    END_SESSION               = 1;
    EXPIRATION_TIMER_UPDATE   = 2;
    PROFILE_KEY_UPDATE        = 4;
    SESSION_RESTORE           = 64;
    UNPAIRING_REQUEST         = 128;
  }

  message Quote {
    message QuotedAttachment {
      optional string            contentType = 1;
      optional string            fileName    = 2;
      optional AttachmentPointer thumbnail   = 3;
    }

    optional uint64           id          = 1;
    optional string           author      = 2;
    optional string           text        = 3;
    repeated QuotedAttachment attachments = 4;
  }

  message Contact {
    message Name {
      optional string givenName   = 1;
      optional string familyName  = 2;
      optional string prefix      = 3;
      optional string suffix      = 4;
      optional string middleName  = 5;
      optional string displayName = 6;
    }

    message Phone {
      enum Type {
        HOME   = 1;
        MOBILE = 2;
        WORK   = 3;
        CUSTOM = 4;
      }

      optional string value = 1;
      optional Type   type  = 2;
      optional string label = 3;
    }

    message Email {
      enum Type {
        HOME   = 1;
        MOBILE = 2;
        WORK   = 3;
        CUSTOM = 4;
      }

      optional string value = 1;
      optional Type   type  = 2;
      optional string label = 3;
    }

    message PostalAddress {
      enum Type {
        HOME   = 1;
        WORK   = 2;
        CUSTOM = 3;
      }

      optional Type   type         = 1;
      optional string label        = 2;
      optional string street       = 3;
      optional string pobox        = 4;
      optional string neighborhood = 5;
      optional string city         = 6;
      optional string region       = 7;
      optional string postcode     = 8;
      optional string country      = 9;
    }

    message Avatar {
      optional AttachmentPointer avatar    = 1;
      optional bool              isProfile = 2;
    }

    optional Name              name            = 1;
    repeated Phone             number          = 3;
    repeated Email             email           = 4;
    repeated PostalAddress     address         = 5;
    optional Avatar            avatar          = 6;
    optional string            organization    = 7;
  }

  message Preview {
    optional string            url   = 1;
    optional string            title = 2;
    optional AttachmentPointer image = 3;
  }

  // Loki: A custom message for our profile
  message LokiProfile {
    optional string displayName = 1;
    optional string avatar = 2;
  }

  message GroupInvitation {
    optional string serverAddress = 1;
    optional uint32 channelId = 2;
    optional string serverName = 3;
  }

  optional string             body        = 1;
  repeated AttachmentPointer  attachments = 2;
  optional GroupContext       group       = 3;
  optional uint32             flags       = 4;
  optional uint32             expireTimer = 5;
  optional bytes              profileKey  = 6;
  optional uint64             timestamp   = 7;
  optional Quote              quote       = 8;
  repeated Contact            contact     = 9;
  repeated Preview            preview     = 10;
  optional LokiProfile        profile     = 101; // Loki: The profile of the current user
  optional GroupInvitation    groupInvitation = 102; // Loki: Invitation to a public chat
  optional MediumGroupUpdate  mediumGroupUpdate = 103; // Loki
}

message NullMessage {
  optional bytes padding = 1;
}

message ReceiptMessage {
  enum Type {
    DELIVERY = 0;
    READ     = 1;
  }

  optional Type   type      = 1;
  repeated uint64 timestamp = 2;
}

message TypingMessage {
    enum Action {
        STARTED = 0;
        STOPPED = 1;
    }

    optional uint64 timestamp = 1;
    optional Action action    = 2;
    optional bytes  groupId   = 3;
}

message Verified {
  enum State {
    DEFAULT    = 0;
    VERIFIED   = 1;
    UNVERIFIED = 2;
  }

  optional string destination = 1;
  optional bytes  identityKey = 2;
  optional State  state       = 3;
  optional bytes  nullMessage = 4;
}

message SyncMessage {
  message Sent {
    message UnidentifiedDeliveryStatus {
      optional string destination  = 1;
      optional bool   unidentified = 2;
    }

    optional string                     destination              = 1;
    optional uint64                     timestamp                = 2;
    optional DataMessage                message                  = 3;
    optional uint64                     expirationStartTimestamp = 4;
    repeated UnidentifiedDeliveryStatus unidentifiedStatus       = 5;
  }

  message Contacts {
    optional AttachmentPointer blob     = 1;
    optional bool              complete = 2 [default = false];
    optional bytes             data     = 101;
  }

  message Groups {
    optional AttachmentPointer blob = 1;
    optional bytes             data = 101;
  }

  message Blocked {
    repeated string numbers = 1;
    repeated bytes groupIds = 2;
  }

  message Request {
    enum Type {
      UNKNOWN       = 0;
      CONTACTS      = 1;
      GROUPS        = 2;
      BLOCKED       = 3;
      CONFIGURATION = 4;
    }

    optional Type type = 1;
  }

  message Read {
    optional string sender    = 1;
    optional uint64 timestamp = 2;
  }

  message Configuration {
    optional bool readReceipts                   = 1;
    optional bool unidentifiedDeliveryIndicators = 2;
    optional bool typingIndicators               = 3;
    optional bool linkPreviews                   = 4;
  }

  message OpenGroupDetails {
    optional string url         = 1;
    optional uint32 channelId   = 2;
  }

  optional Sent             sent             = 1;
  optional Contacts         contacts         = 2;
  optional Groups           groups           = 3;
  optional Request          request          = 4;
  repeated Read             read             = 5;
  optional Blocked          blocked          = 6;
  optional Verified         verified         = 7;
  optional Configuration    configuration    = 9;
  optional bytes            padding          = 8;
  repeated OpenGroupDetails openGroups       = 100;
}

message AttachmentPointer {
  enum Flags {
    VOICE_MESSAGE = 1;
  }

  optional fixed64 id          = 1;
  optional string  contentType = 2;
  optional bytes   key         = 3;
  optional uint32  size        = 4;
  optional bytes   thumbnail   = 5;
  optional bytes   digest      = 6;
  optional string  fileName    = 7;
  optional uint32  flags       = 8;
  optional uint32  width       = 9;
  optional uint32  height      = 10;
  optional string  caption     = 11;
  optional string  url         = 101;
}

message GroupContext {
  enum Type {
    UNKNOWN      = 0;
    UPDATE       = 1;
    DELIVER      = 2;
    QUIT         = 3;
    REQUEST_INFO = 4;
  }
  optional bytes             id      = 1;
  optional Type              type    = 2;
  optional string            name    = 3;
  repeated string            members = 4;
  optional AttachmentPointer avatar  = 5;
  repeated string            admins  = 6;
}

message ContactDetails {
  message Avatar {
    optional string contentType = 1;
    optional uint32 length      = 2;
  }

  optional string   number      = 1;
  optional string   name        = 2;
  optional Avatar   avatar      = 3;
  optional string   color       = 4;
  optional Verified verified    = 5;
  optional bytes    profileKey  = 6;
  optional bool     blocked     = 7;
  optional uint32   expireTimer = 8;
  optional string   nickname    = 101;
}

message GroupDetails {
  message Avatar {
    optional string contentType = 1;
    optional uint32 length      = 2;
  }

  optional bytes  id          = 1;
  optional string name        = 2;
  repeated string members     = 3;
  optional Avatar avatar      = 4;
  optional bool   active      = 5 [default = true];
  optional uint32 expireTimer = 6;
  optional string color       = 7;
  optional bool   blocked     = 8;
  repeated string admins      = 9;
  optional bool is_medium_group = 10;
}