Add hook script to update and publish appstream metainfo on electron build (#1719)

scripts/after-all-artifact-build.mjs

@@ -0,0 +1,45 @@
+import { execSync } from 'child_process';
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+/**
+ * Electron-builder afterAllArtifactBuild hook
+ * Runs the app stream update script only for Linux builds
+ * Returns the metainfo file path to be included in published artifacts
+ */
+
+// This is not a typescript file, and is called by electron-builder, so we cannot use typescript features here.
+// eslint-disable-next-line @typescript-eslint/explicit-function-return-type
+export default async function afterAllArtifactBuild(buildResult) {
+    // Check if this build includes Linux as a target
+    const isLinux = buildResult.platformToTargets
+        .keys()
+        .some((platform) => platform.name === 'linux');
+
+    if (isLinux) {
+        const updateScriptPath = path.join(__dirname, 'update-app-stream.mjs');
+        const projectRoot = path.resolve(__dirname, '..');
+        const metainfoFile = path.resolve(projectRoot, 'org.jeffvli.feishin.metainfo.xml');
+
+        console.log('Running app stream update for Linux build...');
+
+        try {
+            execSync(`node ${updateScriptPath} --replace-if-version-missing`, {
+                cwd: projectRoot,
+                stdio: 'inherit',
+            });
+
+            // Return the metainfo file to be included in published artifacts
+            return [metainfoFile];
+        } catch (error) {
+            console.error('Failed to update app stream:', error.message);
+            throw error;
+        }
+    }
+
+    // Return empty array if not a Linux build
+    return [];
+}