Update index.js

index.js

@@ -9,7 +9,7 @@ const axios    = require('axios');
 const crypto   = require('crypto');
 
 const app  = express();
-const PORT = 7860;
+const PORT = 3000;
 
 // ── DOWNLOAD HASH ─────────────────────────────────────────────────────────────
 // A stable hash generated once at startup. Share this URL to download the APK.
@@ -230,18 +230,42 @@ app.post('/patch', express.json({ limit: '10mb' }), (req, res) => {
     ensureKeystore();
     const tools = checkTools();
 
-    // 1. Open APK as zip, replace assets/characters.txt
-    const zip = new AdmZip(originalApk);
-    zip.updateFile('assets/characters.txt', Buffer.from(characters, 'utf8'));
-
-    // 2. Delete META-INF (old signature) so re-sign works cleanly
-    const toDelete = [];
-    zip.getEntries().forEach(e => {
-      if (e.entryName.startsWith('META-INF/')) toDelete.push(e.entryName);
+    // 1. Repack APK using system unzip/zip to preserve per-entry compression.
+    //    AdmZip re-deflates ALL entries including files Android requires to be
+    //    STORED (resources.arsc, .so libs, etc.) — causing "App not installed".
+    const workDir = path.join(sessionDir, 'apk_work');
+    if (fs.existsSync(workDir)) fs.rmSync(workDir, { recursive: true, force: true });
+    fs.mkdirSync(workDir, { recursive: true });
+
+    // Extract APK
+    const unzipResult = spawnSync('unzip', ['-q', '-o', originalApk, '-d', workDir], { encoding: 'utf8' });
+    if (unzipResult.status !== 0) throw new Error('unzip failed: ' + unzipResult.stderr);
+
+    // Remove META-INF so apksigner can add a fresh signature
+    const metaInfDir = path.join(workDir, 'META-INF');
+    if (fs.existsSync(metaInfDir)) fs.rmSync(metaInfDir, { recursive: true, force: true });
+
+    // Overwrite characters.txt with edited content
+    const charsDest = path.join(workDir, 'assets', 'characters.txt');
+    fs.mkdirSync(path.dirname(charsDest), { recursive: true });
+    fs.writeFileSync(charsDest, Buffer.from(characters, 'utf8'));
+
+    // Repack: compress most files, but re-add known STORED types uncompressed.
+    // Step A — pack everything with compression
+    const zipResult = spawnSync('zip', ['-r', '-9', patchedApk, '.'], { cwd: workDir, encoding: 'utf8' });
+    if (zipResult.status !== 0) throw new Error('zip failed: ' + zipResult.stderr);
+
+    // Step B — find files that must stay STORED and re-add them uncompressed
+    const storedPatterns = ['*.so', '*.arsc', '*.png', '*.gif', '*.jpg', '*.jpeg',
+                            '*.webp', '*.wav', '*.mp3', '*.ogg', '*.aac', '*.ttf', '*.otf'];
+    const storedFiles = storedPatterns.flatMap(pat => {
+      const r = spawnSync('find', ['.', '-name', pat], { cwd: workDir, encoding: 'utf8' });
+      return r.stdout.trim().split('\n').filter(Boolean);
     });
-    toDelete.forEach(name => zip.deleteFile(name));
-
-    zip.writeZip(patchedApk);
+    if (storedFiles.length > 0) {
+      const sr = spawnSync('zip', ['-0', '-u', patchedApk, ...storedFiles], { cwd: workDir, encoding: 'utf8' });
+      if (sr.status !== 0 && sr.status !== 12) console.warn('zip -0 warning:', sr.stderr);
+    }
 
     // 3. zipalign (align before signing for v2/v3; v1 is fine either way)
     let toSign = patchedApk;
@@ -299,7 +323,7 @@ app.get('/', (req, res) => {
 });
 
 // ── START ─────────────────────────────────────────────────────────────────────
-app.listen(PORT, () => {
+app.listen(7860, () => {
   console.log(`\n🦸 Super City Editor backend running at http://localhost:${PORT}`);
   console.log(`\n⬇  Direct APK download: http://localhost:${PORT}/download/${DOWNLOAD_HASH}\n`);
   try { ensureKeystore(); } catch (e) { console.warn('Keystore not ready yet:', e.message); }