mattermost-mobile-upstream/app/init/app.ts

// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.

import {CallsManager} from '@calls/calls_manager';
import DatabaseManager from '@database/manager';
import CallsNative from '@init/calls_native';
import {getAllServerCredentials} from '@init/credentials';
import ManagedApp from '@init/managed_app';
import PushNotifications from '@init/push_notifications';
import DraftSyncManager from '@managers/draft_sync_manager';
import EphemeralModeManager from '@managers/ephemeral_mode_manager';
import GlobalEventHandler from '@managers/global_event_handler';
import NetworkManager from '@managers/network_manager';
import SecurityManager from '@managers/security_manager';
import SessionManager from '@managers/session_manager';
import WebsocketManager from '@managers/websocket_manager';
import EphemeralStore from '@store/ephemeral_store';
import {NavigationStore} from '@store/navigation_store';

// Controls whether the main initialization (database, etc...) is done, either on app launch
// or on the Share Extension, for example.
let baseAppInitialized = false;
let serverCredentials: ServerCredential[] = [];

// Fallback Polyfill for Promise.allSettle
Promise.allSettled = Promise.allSettled || (<T>(promises: Array<Promise<T>>) => Promise.all(
    promises.map((p) => p.
        then((value) => ({
            status: 'fulfilled',
            value,
        })).
        catch((reason) => ({
            status: 'rejected',
            reason,
        })),
    ),
));

export async function initialize() {
    if (!baseAppInitialized) {
        baseAppInitialized = true;
        serverCredentials = await getAllServerCredentials();
        const serverUrls = serverCredentials.map((credential) => credential.serverUrl);

        await DatabaseManager.init(serverUrls);
        await NetworkManager.init(serverCredentials);

        // EphemeralModeManager init runs before WS init so any pending wipes
        // complete before WebSocket clients start populating server databases.
        await EphemeralModeManager.init(serverCredentials);

        // Draft sync initializes after any pending ephemeral wipes finish and before
        // WebSocket startup, so it never races a database that is being destroyed.
        await Promise.all(serverUrls.map((serverUrl) => DraftSyncManager.initialize(serverUrl)));

        await WebsocketManager.init(serverCredentials);
    }

    NavigationStore.reset();
    EphemeralStore.setCurrentThreadId('');
    EphemeralStore.setProcessingNotification('');

    await SecurityManager.init();

    GlobalEventHandler.init();
    ManagedApp.init();
    SessionManager.init();
    CallsManager.initialize();
    CallsNative.init();

    PushNotifications.init(serverCredentials.length > 0);
}

export function cleanup() {
    ManagedApp.cleanup();
    GlobalEventHandler.cleanup();
    SecurityManager.cleanup();
    SessionManager.cleanup();
    CallsManager.cleanup();
    CallsNative.cleanup();
    PushNotifications.cleanup();
    EphemeralModeManager.cleanup();
}