'use strict';
const { app } = require('electron');
const { EventEmitter } = require('events');
const squirrelUpdate = require('@electron/internal/browser/api/auto-updater/squirrel-update-win');
class AutoUpdater extends EventEmitter {
    quitAndInstall() {
        if (!this.updateAvailable) {
            return this.emitError('No update available, can\'t quit and install');
        }
        squirrelUpdate.processStart();
        app.quit();
    }
    getFeedURL() {
        return this.updateURL;
    }
    setFeedURL(options) {
        let updateURL;
        if (typeof options === 'object') {
            if (typeof options.url === 'string') {
                updateURL = options.url;
            }
            else {
                throw new Error('Expected options object to contain a \'url\' string property in setFeedUrl call');
            }
        }
        else if (typeof options === 'string') {
            updateURL = options;
        }
        else {
            throw new Error('Expected an options object with a \'url\' property to be provided');
        }
        this.updateURL = updateURL;
    }
    checkForUpdates() {
        if (!this.updateURL) {
            return this.emitError('Update URL is not set');
        }
        if (!squirrelUpdate.supported()) {
            return this.emitError('Can not find Squirrel');
        }
        this.emit('checking-for-update');
        squirrelUpdate.checkForUpdate(this.updateURL, (error, update) => {
            if (error != null) {
                return this.emitError(error);
            }
            if (update == null) {
                return this.emit('update-not-available');
            }
            this.updateAvailable = true;
            this.emit('update-available');
            squirrelUpdate.update(this.updateURL, (error) => {
                if (error != null) {
                    return this.emitError(error);
                }
                const { releaseNotes, version } = update;
                // Date is not available on Windows, so fake it.
                const date = new Date();
                this.emit('update-downloaded', {}, releaseNotes, version, date, this.updateURL, () => {
                    this.quitAndInstall();
                });
            });
        });
    }
    // Private: Emit both error object and message, this is to keep compatibility
    // with Old APIs.
    emitError(message) {
        this.emit('error', new Error(message), message);
    }
}
module.exports = new AutoUpdater();