84 lines
3.4 KiB
JavaScript
84 lines
3.4 KiB
JavaScript
const { app, autoUpdater, ipcMain } = require('electron');
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const UPDATE_POLL_INTERVAL_MS = 60 * 60 * 1000;
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const INITIAL_UPDATE_DELAY_MS = 30 * 1000;
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function installUpdate() {
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// for some reason, quitAndInstall does not fire the
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// before-quit event, so we need to set the flag here.
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global.appQuitting = true;
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autoUpdater.quitAndInstall();
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}
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function pollForUpdates() {
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try {
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autoUpdater.checkForUpdates();
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} catch (e) {
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console.log('Couldn\'t check for update', e);
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}
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}
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module.exports = {};
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module.exports.start = function startAutoUpdate(updateBaseUrl) {
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if (updateBaseUrl.slice(-1) !== '/') {
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updateBaseUrl = updateBaseUrl + '/';
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}
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try {
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let url;
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// For reasons best known to Squirrel, the way it checks for updates
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// is completely different between macOS and windows. On macOS, it
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// hits a URL that either gives it a 200 with some json or
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// 204 No Content. On windows it takes a base path and looks for
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// files under that path.
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if (process.platform === 'darwin') {
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// include the current version in the URL we hit. Electron doesn't add
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// it anywhere (apart from the User-Agent) so it's up to us. We could
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// (and previously did) just use the User-Agent, but this doesn't
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// rely on NSURLConnection setting the User-Agent to what we expect,
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// and also acts as a convenient cache-buster to ensure that when the
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// app updates it always gets a fresh value to avoid update-looping.
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url = `${updateBaseUrl}macos/?localVersion=${encodeURIComponent(app.getVersion())}`;
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} else if (process.platform === 'win32') {
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url = `${updateBaseUrl}win32/${process.arch}/`;
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} else {
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// Squirrel / electron only supports auto-update on these two platforms.
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// I'm not even going to try to guess which feed style they'd use if they
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// implemented it on Linux, or if it would be different again.
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console.log('Auto update not supported on this platform');
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}
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if (url) {
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autoUpdater.setFeedURL(url);
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// We check for updates ourselves rather than using 'updater' because we need to
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// do it in the main process (and we don't really need to check every 10 minutes:
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// every hour should be just fine for a desktop app)
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// However, we still let the main window listen for the update events.
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// We also wait a short time before checking for updates the first time because
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// of squirrel on windows and it taking a small amount of time to release a
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// lock file.
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setTimeout(pollForUpdates, INITIAL_UPDATE_DELAY_MS);
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setInterval(pollForUpdates, UPDATE_POLL_INTERVAL_MS);
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}
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} catch (err) {
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// will fail if running in debug mode
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console.log('Couldn\'t enable update checking', err);
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}
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}
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ipcMain.on('install_update', installUpdate);
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ipcMain.on('check_updates', pollForUpdates);
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function ipcChannelSendUpdateStatus(status) {
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if (global.mainWindow) {
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global.mainWindow.webContents.send('check_updates', status);
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}
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}
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autoUpdater.on('update-available', function() {
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ipcChannelSendUpdateStatus(true);
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}).on('update-not-available', function() {
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ipcChannelSendUpdateStatus(false);
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}).on('error', function(error) {
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ipcChannelSendUpdateStatus(error.message);
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});
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