experiments in a post-browser web
feat(tile-launcher): relaunchTile(tileId) — close + revoke + re-read manifest + launch
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backend/electron/tile-launcher.ts
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backend/electron/tile-launcher.ts
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clearAllTokens,
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} from './tile-tokens.js';
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import { scopes, publish, getSystemAddress, unsubscribeAllByPrefix } from './pubsub.js';
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import { DEBUG } from './config.js';
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import { DEBUG, getTilePreloadPath } from './config.js';
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import { loadSchemaDefaults } from './tile-settings-defaults.js';
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import { getExtensionPath } from './protocol.js';
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// Short grace period given to tiles to run their `api.onShutdown()` callbacks
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// before the BrowserWindow is forcibly closed. Kept small so app-quit and
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revokeTokensForTile(tileId, entryId);
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DEBUG && console.log(`[tile-launcher] Unloaded tile: ${key}`);
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}
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/**
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* Relaunch a tile — re-read the manifest from disk, close the old window
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* (if any), revoke its tokens, then call `launchTile()` with the fresh manifest.
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*
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* This is the v2 replacement for `createExtensionWindow(extId)` used by
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* `reloadExtension()` and `loadDevExtension()` in main.ts. See Phase 2.5 #3b
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* in `docs/v1-removal-plan.md`.
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*
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* Edge cases:
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* - Tile not currently running (no window): just launches fresh.
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* - Window already destroyed: skips close, still revokes tokens and relaunches.
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* - Manifest no longer parseable: returns null (logs error).
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* - `getTilePreloadPath()` not configured: returns null (logs error).
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*/
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export async function relaunchTile(tileId: string): Promise<TileLaunchResult | null> {
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const tilePath = getExtensionPath(tileId);
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if (!tilePath) {
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console.error(`[tile-launcher] relaunchTile: no path registered for tile ${tileId}`);
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return null;
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}
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const tilePreloadPath = getTilePreloadPath();
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if (!tilePreloadPath) {
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console.error(`[tile-launcher] relaunchTile: tile preload path not configured — call initialize() first`);
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return null;
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}
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// Re-read manifest from disk so any changes (e.g. during dev reload) are picked up.
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const manifestPath = path.join(tilePath, 'manifest.json');
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const parsed = parseManifestFile(manifestPath);
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if (!parsed || parsed.version !== 'v2' || !parsed.v2) {
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console.error(`[tile-launcher] relaunchTile: cannot re-read v2 manifest for ${tileId} at ${manifestPath}`);
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return null;
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}
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const manifest = parsed.v2;
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// Determine which entry to (re)launch — use the first entry, matching the
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// pattern used in loadV2Tile / tile-compat.
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const entry = manifest.tiles[0];
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if (!entry) {
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console.error(`[tile-launcher] relaunchTile: manifest for ${tileId} has no tile entries`);
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return null;
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}
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// Close the existing window if one is running.
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const existingWin = tileWindows.get(`${tileId}:${entry.id}`);
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if (existingWin && !existingWin.isDestroyed()) {
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// Use unloadTile for clean shutdown (shutdown signal + token revoke + unsubscribe).
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await unloadTile(tileId, entry.id);
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} else {
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// No live window — still revoke any stale tokens from a previous run.
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revokeTokensForTile(tileId, entry.id);
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loadedManifests.delete(tileId);
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}
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DEBUG && console.log(`[tile-launcher] Relaunching ${tileId}:${entry.id} from ${tilePath}`);
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return launchTile({
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tilePath,
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manifest,
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preloadPath: tilePreloadPath,
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entryId: entry.id,
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});
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}
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// ─── Test Hooks ──────────────────────────────────────────────────────