session-ios/Signal/src/environment/AppEnvironment.swift

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

import Foundation
import SignalServiceKit
import SignalMessaging

@objc public class AppEnvironment: NSObject {

    private static var _shared: AppEnvironment = AppEnvironment()

    @objc
    public class var shared: AppEnvironment {
        get {
            return _shared
        }
        set {
            guard CurrentAppContext().isRunningTests else {
                owsFailDebug("Can only switch environments in tests.")
                return
            }

            _shared = newValue
        }
    }

    @objc
    public var callMessageHandler: WebRTCCallMessageHandler

    @objc
    public var callService: CallService

    @objc
    public var outboundCallInitiator: OutboundCallInitiator

    @objc
    public var messageFetcherJob: MessageFetcherJob

    @objc
    public var notificationsManager: NotificationsManager

    @objc
    public var accountManager: AccountManager

    @objc
    public var callNotificationsAdapter: CallNotificationsAdapter

    @objc
    public var pushRegistrationManager: PushRegistrationManager

    @objc
    public init(callMessageHandler: WebRTCCallMessageHandler,
                callService: CallService,
                outboundCallInitiator: OutboundCallInitiator,
                messageFetcherJob: MessageFetcherJob,
                notificationsManager: NotificationsManager,
                accountManager: AccountManager,
                callNotificationsAdapter: CallNotificationsAdapter,
                pushRegistrationManager: PushRegistrationManager) {
        self.callMessageHandler = callMessageHandler
        self.callService = callService
        self.outboundCallInitiator = outboundCallInitiator
        self.messageFetcherJob = messageFetcherJob
        self.notificationsManager = notificationsManager
        self.accountManager = accountManager
        self.callNotificationsAdapter = callNotificationsAdapter
        self.pushRegistrationManager = pushRegistrationManager

        super.init()

        SwiftSingletons.register(self)
    }

    private override init() {
        let accountManager = AccountManager()
        let notificationsManager = NotificationsManager()
        let callNotificationsAdapter = CallNotificationsAdapter()
        let callService = CallService()
        let callMessageHandler = WebRTCCallMessageHandler()
        let outboundCallInitiator = OutboundCallInitiator()
        let messageFetcherJob = MessageFetcherJob()
        let pushRegistrationManager = PushRegistrationManager()

        self.callMessageHandler = callMessageHandler
        self.callService = callService
        self.outboundCallInitiator = outboundCallInitiator
        self.messageFetcherJob = messageFetcherJob
        self.notificationsManager = notificationsManager
        self.accountManager = accountManager
        self.callNotificationsAdapter = callNotificationsAdapter
        self.pushRegistrationManager = pushRegistrationManager

        super.init()

        SwiftSingletons.register(self)
    }

    @objc
    public func setup() {
        callService.createCallUIAdapter()

        // Hang certain singletons on SSKEnvironment too.
        SSKEnvironment.shared.notificationsManager = notificationsManager
        SSKEnvironment.shared.callMessageHandler = callMessageHandler
    }
}