import { app, BrowserWindow } from 'electron';
import { getElectronUserDataPath } from '@iptvnator/shared/database';
import { autoUpdater } from 'electron-updater';
import fixPath from 'fix-path';
import App from './app/app';
import { initDatabase } from './app/database/connection';
import DatabaseEvents from './app/events/database.events';
import {
    resetStaleDownloads,
    setMainWindow as setDownloadsMainWindow,
} from './app/events/database/downloads.events';
import ElectronEvents from './app/events/electron.events';
import EmbeddedMpvEvents, {
    shutdownEmbeddedMpv,
} from './app/events/embedded-mpv.events';
import EpgEvents from './app/events/epg.events';
import AppUpdateEvents from './app/events/app-update.events';
import { shutdownMpvSession } from './app/events/mpv-session.service';
import PlayerEvents from './app/events/player.events';
import { shutdownVlcSession } from './app/events/vlc-session.service';
import PlaylistEvents from './app/events/playlist.events';
import RemoteControlEvents from './app/events/remote-control.events';
import SettingsEvents from './app/events/settings.events';
import SharedEvents from './app/events/shared.events';
import SquirrelEvents from './app/events/squirrel.events';
import StalkerEvents from './app/events/stalker.events';
import { isStartupTraceEnabled, trace } from './app/services/debug-trace';
import { AppUpdateService } from './app/services/app-update.service';
import { databaseWorkerClient } from './app/services/database-worker-client';
import WindowEvents from './app/events/window.events';
import XtreamEvents from './app/events/xtream.events';
import { environment } from './environments/environment';

app.setName('iptvnator');

const electronUserDataPath = getElectronUserDataPath();

if (electronUserDataPath) {
    app.setPath('userData', electronUserDataPath);
}

let fixPathScheduled = false;

/**
 * Update process.env.PATH from the user's interactive login shell so that
 * spawned external players (MPV/VLC) can be resolved by binary name.
 *
 * Runs after window creation + IPC handler registration so the 50-300 ms
 * shell-spawn cost (bash/zsh -ilc env) doesn't block startup. Idempotent:
 * subsequent calls are no-ops.
 */
function scheduleDeferredFixPath(): void {
    if (fixPathScheduled || process.platform === 'win32') {
        return;
    }

    fixPathScheduled = true;
    setImmediate(() => {
        try {
            fixPath();
            if (isStartupTraceEnabled()) {
                trace('startup', 'fix-path:done');
            }
        } catch (error) {
            console.warn('fix-path failed:', error);
        }
    });
}

export default class Main {
    static initialize() {
        if (SquirrelEvents.handleEvents()) {
            // squirrel event handled (except first run event) and app will exit in 1000ms, so don't do anything else
            app.quit();
        }
    }

    static bootstrapApp() {
        if (isStartupTraceEnabled()) {
            trace('startup', 'bootstrap-app');
        }
        App.main(app, BrowserWindow);
    }

    static async bootstrapAppEvents() {
        if (isStartupTraceEnabled()) {
            trace('startup', 'bootstrap-events:start');
        }

        const appUpdateService = new AppUpdateService({
            app,
            appVersion: environment.version,
            getMainWindow: () => App.mainWindow,
            updater: () => autoUpdater,
        });
        AppUpdateEvents.bootstrapAppUpdateEvents(appUpdateService);

        ElectronEvents.bootstrapElectronEvents();
        WindowEvents.bootstrapWindowEvents();
        EmbeddedMpvEvents.bootstrapEmbeddedMpvEvents();
        PlaylistEvents.bootstrapPlaylistEvents();
        SharedEvents.bootstrapSharedEvents();
        PlayerEvents.bootstrapPlayerEvents();
        SettingsEvents.bootstrapSettingsEvents();
        StalkerEvents.bootstrapStalkerEvents();
        XtreamEvents.bootstrapXtreamEvents();
        DatabaseEvents.bootstrapDatabaseEvents();
        EpgEvents.bootstrapEpgEvents();
        RemoteControlEvents.bootstrapRemoteControlEvents();

        // Set main window for downloads and reset stale downloads
        if (App.mainWindow) {
            setDownloadsMainWindow(App.mainWindow);
        }

        // Load the renderer only after IPC handlers are registered. On slower
        // Linux CI hosts the renderer can otherwise invoke Electron bridge IPC
        // before the main process has installed handlers.
        await App.loadMainWindow();
        void appUpdateService.checkForUpdatesOnStartup();

        // Initialize the database after the first renderer load is underway so
        // Linux Electron E2E can observe a BrowserWindow even when SQLite
        // startup or download recovery is slow. IPC handlers call getDatabase()
        // lazily and share the same initialization promise.
        await initDatabase();

        if (isStartupTraceEnabled()) {
            trace('startup', 'init-database:done');
        }

        await resetStaleDownloads();

        if (isStartupTraceEnabled()) {
            trace('startup', 'reset-stale-downloads:done');
        }

        if (isStartupTraceEnabled()) {
            trace('startup', 'bootstrap-events:done');
        }

        // Hydrate process.env.PATH from the user's login shell now — after
        // the window has loaded and IPC handlers are live. Fire-and-forget
        // (setImmediate) so it doesn't gate any user-visible work. Worst
        // case: the user clicks an external player within the ~100 ms it
        // takes to complete; the spawn would still find MPV/VLC at any of
        // the well-known paths checked by getDefault*Path before falling
        // back to bare-name PATH lookup.
        scheduleDeferredFixPath();
    }
}

// handle setup events as quickly as possible
Main.initialize();

// bootstrap app
Main.bootstrapApp();

// Bootstrap app events after Electron app is ready
app.whenReady().then(async () => {
    if (isStartupTraceEnabled()) {
        trace('startup', 'app.whenReady');
    }
    await Main.bootstrapAppEvents();
});

app.on('before-quit', () => {
    shutdownEmbeddedMpv();
    shutdownMpvSession();
    shutdownVlcSession();
    void databaseWorkerClient.shutdown();
});