mirror of
https://github.com/kuhyx/todo-app.git
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Krzysztof kuhy Rudnicki
2bbfe0b663
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Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
89 lines
3.5 KiB
Dart
89 lines
3.5 KiB
Dart
/// Finding and launching the Chrome window the desktop app runs in.
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///
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/// Split out of `bin/todo_desktop.dart` for file size. The profile directory
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/// is fixed on purpose: the GitHub token (localStorage) and the notes
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/// (IndexedDB) are keyed by origin and live in that profile, so a moving
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/// profile dir would silently log the user out and hide their notes.
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library;
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import 'dart:io';
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import 'package:path/path.dart' as p;
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/// Port must stay fixed: the browser keys `localStorage` (the GitHub token)
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/// and IndexedDB (the notes) by origin, so a different port looks like a
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/// different app with no token and no notes.
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const kWrapperPort = 8730;
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/// Browser profile directory for the desktop app.
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///
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/// Must stay stable: the GitHub token (localStorage) and the notes (IndexedDB)
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/// live inside it, so a changing path silently logs the user out and hides
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/// their notes. It doubles as the marker for "a window is still attached".
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String profileDir(String home) =>
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p.join(home, '.local', 'share', 'todo-desktop', 'profile');
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/// Returns the first Chrome-family browser on this machine, or ''.
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///
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/// [override] defaults to `$TODO_BROWSER`; [exists] to a file check.
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String findBrowser({String? override, bool Function(String path)? exists}) {
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// Ordered by preference, and deliberately broad: this machine runs Thorium
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// behind /opt/google/chrome, and has a policy that uninstalls the `chromium`
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// package, so assuming any single browser is wrong. TODO_BROWSER overrides.
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final candidates = [
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override ?? Platform.environment['TODO_BROWSER'] ?? '',
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'/opt/google/chrome/chrome',
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'/opt/thorium-browser/thorium-browser',
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'/usr/bin/google-chrome-stable',
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'/usr/bin/chromium',
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'/usr/bin/brave',
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];
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return candidates.firstWhere(
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(path) => path.isNotEmpty && (exists ?? (p) => File(p).existsSync())(path),
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orElse: () => '',
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);
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}
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/// Command-line arguments for the app window.
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List<String> browserArgs(String home) => [
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'--app=http://localhost:$kWrapperPort',
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'--user-data-dir=${profileDir(home)}',
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// Sets WM_CLASS, which the .desktop entry matches on via StartupWMClass.
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// Without it the window inherits the browser's class and the taskbar shows
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// a browser icon instead of todo's.
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'--class=todo',
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'--no-first-run',
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// Keep Chrome off the GNOME keyring. While the keyring is locked, Chrome
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// blocks every non-incognito page load on its first cookie access, and an
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// "Unlock Keyring" prompt waits on another workspace: the window stays a
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// blank grey. Nothing in this profile needs OS-level encryption (the
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// GitHub token is in localStorage, not the password store).
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'--password-store=basic',
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];
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/// Launches the app in a Chrome-family browser with a **stable** profile
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/// directory, since the token and notes live in that profile.
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///
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/// Returns true when the browser ran long enough to have owned the session.
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/// [browser] and [start] exist for tests; they default to [findBrowser] and
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/// [Process.start].
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Future<bool> launchBrowser(
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String home, {
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String? browser,
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Future<Process> Function(String executable, List<String> args)? start,
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}) async {
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browser ??= findBrowser();
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if (browser.isEmpty) {
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stderr.writeln(
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'No Chrome-family browser found; open '
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'http://localhost:$kWrapperPort manually.',
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);
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return false;
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}
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final process = await (start ?? Process.start)(browser, browserArgs(home));
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final started = DateTime.now();
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await process.exitCode;
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return DateTime.now().difference(started) > const Duration(seconds: 5);
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}
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