// Copyright (c) 2016-present Mattermost, Inc. All Rights Reserved.
// See LICENSE.txt for license information.

import {app, shell, Notification} from 'electron';

import {getDoNotDisturb as getDarwinDoNotDisturb} from 'macos-notification-state';

import {MentionData} from 'types/notification';

import Config from 'common/config';
import {PLAY_SOUND} from 'common/communication';
import {Logger} from 'common/log';

import ViewManager from '../views/viewManager';
import MainWindow from '../windows/mainWindow';

import {Mention} from './Mention';
import {DownloadNotification} from './Download';
import {NewVersionNotification, UpgradeNotification} from './Upgrade';
import getLinuxDoNotDisturb from './dnd-linux';
import getWindowsDoNotDisturb from './dnd-windows';

export const currentNotifications = new Map();

const log = new Logger('Notifications');

export function displayMention(title: string, body: string, channel: {id: string}, teamId: string, url: string, silent: boolean, webcontents: Electron.WebContents, data: MentionData) {
    log.debug('displayMention', {title, body, channel, teamId, url, silent, data});

    if (!Notification.isSupported()) {
        log.error('notification not supported');
        return;
    }

    if (getDoNotDisturb()) {
        return;
    }

    const view = ViewManager.getViewByWebContentsId(webcontents.id);
    if (!view) {
        return;
    }
    const serverName = view.view.server.name;

    const options = {
        title: `${serverName}: ${title}`,
        body,
        silent,
        data,
    };

    const mention = new Mention(options, channel, teamId);
    const mentionKey = `${mention.teamId}:${mention.channel.id}`;

    mention.on('show', () => {
        log.debug('displayMention.show');

        // On Windows, manually dismiss notifications from the same channel and only show the latest one
        if (process.platform === 'win32') {
            if (currentNotifications.has(mentionKey)) {
                log.debug(`close ${mentionKey}`);
                currentNotifications.get(mentionKey).close();
                currentNotifications.delete(mentionKey);
            }
            currentNotifications.set(mentionKey, mention);
        }
        const notificationSound = mention.getNotificationSound();
        if (notificationSound) {
            MainWindow.sendToRenderer(PLAY_SOUND, notificationSound);
        }
        flashFrame(true);
    });

    mention.on('click', () => {
        log.debug('notification click', serverName, mention);
        MainWindow.show();
        if (serverName) {
            ViewManager.showById(view.id);
            webcontents.send('notification-clicked', {channel, teamId, url});
        }
    });
    mention.show();
}

export function displayDownloadCompleted(fileName: string, path: string, serverName: string) {
    log.debug('displayDownloadCompleted', {fileName, path, serverName});

    if (!Notification.isSupported()) {
        log.error('notification not supported');
        return;
    }

    if (getDoNotDisturb()) {
        return;
    }

    const download = new DownloadNotification(fileName, serverName);

    download.on('show', () => {
        flashFrame(true);
    });

    download.on('click', () => {
        shell.showItemInFolder(path.normalize());
    });
    download.show();
}

let upgrade: NewVersionNotification;

export function displayUpgrade(version: string, handleUpgrade: () => void): void {
    if (!Notification.isSupported()) {
        log.error('notification not supported');
        return;
    }
    if (getDoNotDisturb()) {
        return;
    }

    if (upgrade) {
        upgrade.close();
    }
    upgrade = new NewVersionNotification();
    upgrade.on('click', () => {
        log.info(`User clicked to upgrade to ${version}`);
        handleUpgrade();
    });
    upgrade.show();
}

let restartToUpgrade;
export function displayRestartToUpgrade(version: string, handleUpgrade: () => void): void {
    if (!Notification.isSupported()) {
        log.error('notification not supported');
        return;
    }
    if (getDoNotDisturb()) {
        return;
    }

    restartToUpgrade = new UpgradeNotification();
    restartToUpgrade.on('click', () => {
        log.info(`User requested perform the upgrade now to ${version}`);
        handleUpgrade();
    });
    restartToUpgrade.show();
}

function getDoNotDisturb() {
    if (process.platform === 'win32') {
        return getWindowsDoNotDisturb();
    }

    if (process.platform === 'darwin') {
        return getDarwinDoNotDisturb();
    }

    if (process.platform === 'linux') {
        return getLinuxDoNotDisturb();
    }

    return false;
}

function flashFrame(flash: boolean) {
    if (process.platform === 'linux' || process.platform === 'win32') {
        if (Config.notifications.flashWindow) {
            MainWindow.get()?.flashFrame(flash);
        }
    }
    if (process.platform === 'darwin' && Config.notifications.bounceIcon) {
        app.dock.bounce(Config.notifications.bounceIconType);
    }
}