feat: auto-install silencieux des mises à jour (téléchargement + relance auto)

main.js

@@ -103,6 +103,70 @@ function resolveAssetUrl(release) {
   return asset ? asset.browser_download_url : null;
 }
 
+function sendUpdateProgress(percent, status, error) {
+  if (mainWindow && !mainWindow.isDestroyed())
+    mainWindow.webContents.send('update-progress', { percent, status, error });
+}
+
+function downloadFileWithProgress(url, destPath, onProgress) {
+  return new Promise((resolve, reject) => {
+    const follow = (currentUrl, redirects) => {
+      if (redirects > 5) return reject(new Error('Trop de redirections'));
+      const mod = currentUrl.startsWith('https') ? require('https') : require('http');
+      const req = mod.get(currentUrl, { timeout: 120000, headers: { 'User-Agent': 'farm-tracker-updater' } }, (res) => {
+        if ([301, 302, 307, 308].includes(res.statusCode))
+          return follow(res.headers.location, redirects + 1);
+        if (res.statusCode !== 200)
+          return reject(new Error(`HTTP ${res.statusCode}`));
+        const total = parseInt(res.headers['content-length'] || '0', 10);
+        let downloaded = 0;
+        const file = fs.createWriteStream(destPath);
+        res.on('data', chunk => {
+          downloaded += chunk.length;
+          file.write(chunk);
+          if (total > 0 && onProgress) onProgress(Math.round(downloaded / total * 100));
+        });
+        res.on('end', () => file.close(() => resolve(destPath)));
+        res.on('error', err => { file.close(); try { fs.unlinkSync(destPath); } catch (_) {} reject(err); });
+      });
+      req.on('error', reject);
+      req.on('timeout', () => { req.destroy(); reject(new Error('Timeout')); });
+    };
+    follow(url, 0);
+  });
+}
+
+async function downloadAndInstall(downloadUrl, version) {
+  if (!app.isPackaged) {
+    dialog.showMessageBox(mainWindow, {
+      type: 'info', title: 'Mode développement',
+      message: 'Auto-install non disponible en mode dev.',
+      buttons: ['OK']
+    });
+    return;
+  }
+  const ext = process.platform === 'win32' ? '.exe' : '.AppImage';
+  const tmpPath = path.join(app.getPath('temp'), `farm-tracker-${version}${ext}`);
+  try {
+    sendUpdateProgress(0, 'downloading');
+    await downloadFileWithProgress(downloadUrl, tmpPath, pct => sendUpdateProgress(pct, 'downloading'));
+    sendUpdateProgress(100, 'installing');
+    if (process.platform === 'linux') {
+      fs.chmodSync(tmpPath, 0o755);
+      const current = process.env.APPIMAGE;
+      if (current) { fs.copyFileSync(tmpPath, current); fs.unlinkSync(tmpPath); app.relaunch(); }
+      else app.relaunch({ execPath: tmpPath });
+      app.exit(0);
+    } else if (process.platform === 'win32') {
+      const { spawn } = require('child_process');
+      spawn(tmpPath, ['/S'], { detached: true, stdio: 'ignore' }).unref();
+      app.quit();
+    }
+  } catch (e) {
+    sendUpdateProgress(0, 'error', e.message);
+  }
+}
+
 async function showUpdateDialog(version, downloadUrl, ignoreSnooze = false) {
   const current = app.getVersion();
   if (!isNewerVersion(version, current)) return false;
@@ -117,14 +181,14 @@ async function showUpdateDialog(version, downloadUrl, ignoreSnooze = false) {
     type: 'info',
     title: 'Mise à jour disponible',
     message: `Version ${version} disponible`,
-    detail: `Version actuelle : ${current}`,
-    buttons: ['Télécharger', 'Me rappeler dans...'],
+    detail: `Version actuelle : ${current}\nL'application se relancera automatiquement après la mise à jour.`,
+    buttons: ['Installer maintenant', 'Me rappeler dans...'],
     defaultId: 0,
     cancelId: 1
   });
 
   if (response === 0) {
-    shell.openExternal(downloadUrl);
+    downloadAndInstall(downloadUrl, version);
     return true;
   }