From da042b5749e692c5cb254254b1dd892e8f447321 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=9Cmit=20Tun=C3=A7?= <umitreva@gmail.com>
Date: Thu, 28 May 2026 07:51:41 +0300
Subject: [PATCH] feat: add pause, resume, and stop download IPC handlers and
 implement multilingual UI support

---
 main.js             |  15 ++
 src/index.html      |  16 +++
 src/locales/ar.json |   5 +-
 src/locales/de.json |   5 +-
 src/locales/en.json |   5 +-
 src/locales/ru.json |   5 +-
 src/locales/tr.json |   5 +-
 utils/downloader.js | 333 +++++++++++++++++++++++++++++++++++---------
 8 files changed, 316 insertions(+), 73 deletions(-)

diff --git a/main.js b/main.js
index cc82cf1..4dbc9d9 100644
--- a/main.js
+++ b/main.js
@@ -93,6 +93,21 @@ ipcMain.handle('download-media', async (event, { items, browser }) => {
   }
 });
 
+// IPC Handler: Pause Download
+ipcMain.handle('pause-download', () => {
+  return downloader.pauseDownload();
+});
+
+// IPC Handler: Resume Download
+ipcMain.handle('resume-download', () => {
+  return downloader.resumeDownload();
+});
+
+// IPC Handler: Stop Download
+ipcMain.handle('stop-download', () => {
+  return downloader.stopDownload();
+});
+
 // IPC Handler: Open Path in File Explorer
 ipcMain.handle('open-path', async (event, folderPath) => {
   try {
diff --git a/src/index.html b/src/index.html
index 944ed5a..c687f9d 100644
--- a/src/index.html
+++ b/src/index.html
@@ -246,6 +246,22 @@
                   <p id="download-subtext" class="subtext" style="margin-top: 0; font-size: 0.7rem;">Lütfen bekleyin...</p>
                 </div>
               </div>
+
+              <!-- Control Buttons (Pause / Resume / Stop) -->
+              <div class="download-controls-row" style="display: flex; gap: 8px; margin-top: 8px; justify-content: flex-end;">
+                <button id="dl-pause-btn" class="dl-ctrl-btn" style="background: rgba(249, 203, 40, 0.12); border: 1px solid rgba(249, 203, 40, 0.25); color: #f9cb28; font-size: 0.72rem; padding: 4px 10px; border-radius: 6px; cursor: pointer; display: flex; align-items: center; gap: 4px; font-weight: 600;">
+                  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" style="width: 11px; height: 11px;"><rect x="6" y="4" width="4" height="16"></rect><rect x="14" y="4" width="4" height="16"></rect></svg>
+                  <span data-i18n="btn_pause">Duraklat</span>
+                </button>
+                <button id="dl-resume-btn" class="dl-ctrl-btn" style="background: rgba(0, 255, 135, 0.12); border: 1px solid rgba(0, 255, 135, 0.25); color: #00ff87; font-size: 0.72rem; padding: 4px 10px; border-radius: 6px; cursor: pointer; display: none; align-items: center; gap: 4px; font-weight: 600;">
+                  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" style="width: 11px; height: 11px;"><polygon points="5 3 19 12 5 21 5 3"></polygon></svg>
+                  <span data-i18n="btn_resume">Devam Et</span>
+                </button>
+                <button id="dl-stop-btn" class="dl-ctrl-btn" style="background: rgba(255, 77, 77, 0.12); border: 1px solid rgba(255, 77, 77, 0.25); color: #ff4d4d; font-size: 0.72rem; padding: 4px 10px; border-radius: 6px; cursor: pointer; display: flex; align-items: center; gap: 4px; font-weight: 600;">
+                  <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5" style="width: 11px; height: 11px;"><rect x="4" y="4" width="16" height="16" rx="2" ry="2"></rect></svg>
+                  <span data-i18n="btn_stop">Durdur</span>
+                </button>
+              </div>
             </div>
 
             <button id="download-btn" class="glow-button full-width">
diff --git a/src/locales/ar.json b/src/locales/ar.json
index 84a2eb6..470ccb9 100644
--- a/src/locales/ar.json
+++ b/src/locales/ar.json
@@ -71,5 +71,8 @@
   "min_suffix_short": "د",
   "sec_suffix_short": "ث",
   "hr_suffix_short": "س",
-  "overall_status_label": "التقدم الإجمالي"
+  "overall_status_label": "التقدم الإجمالي",
+  "btn_pause": "إيقاف مؤقت",
+  "btn_resume": "استئناف",
+  "btn_stop": "إيقاف"
 }
diff --git a/src/locales/de.json b/src/locales/de.json
index 967eb3d..93fb36c 100644
--- a/src/locales/de.json
+++ b/src/locales/de.json
@@ -71,5 +71,8 @@
   "min_suffix_short": "Min.",
   "sec_suffix_short": "Sek.",
   "hr_suffix_short": "Std.",
-  "overall_status_label": "Gesamtfortschritt"
+  "overall_status_label": "Gesamtfortschritt",
+  "btn_pause": "Pause",
+  "btn_resume": "Fortsetzen",
+  "btn_stop": "Stoppen"
 }
diff --git a/src/locales/en.json b/src/locales/en.json
index b5dcb2f..8006712 100644
--- a/src/locales/en.json
+++ b/src/locales/en.json
@@ -71,5 +71,8 @@
   "min_suffix_short": "min",
   "sec_suffix_short": "sec",
   "hr_suffix_short": "hr",
-  "overall_status_label": "Overall Progress"
+  "overall_status_label": "Overall Progress",
+  "btn_pause": "Pause",
+  "btn_resume": "Resume",
+  "btn_stop": "Stop"
 }
diff --git a/src/locales/ru.json b/src/locales/ru.json
index 970f4cd..dfb60c1 100644
--- a/src/locales/ru.json
+++ b/src/locales/ru.json
@@ -71,5 +71,8 @@
   "min_suffix_short": "мин.",
   "sec_suffix_short": "сек.",
   "hr_suffix_short": "ч.",
-  "overall_status_label": "Общий прогресс"
+  "overall_status_label": "Общий прогресс",
+  "btn_pause": "Пауза",
+  "btn_resume": "Продолжить",
+  "btn_stop": "Остановить"
 }
diff --git a/src/locales/tr.json b/src/locales/tr.json
index 6bf72ea..246c204 100644
--- a/src/locales/tr.json
+++ b/src/locales/tr.json
@@ -71,5 +71,8 @@
   "min_suffix_short": "dk",
   "sec_suffix_short": "sn",
   "hr_suffix_short": "sa",
-  "overall_status_label": "Genel İlerleme"
+  "overall_status_label": "Genel İlerleme",
+  "btn_pause": "Duraklat",
+  "btn_resume": "Devam Et",
+  "btn_stop": "Durdur"
 }
diff --git a/utils/downloader.js b/utils/downloader.js
index f72c495..c4f996f 100644
--- a/utils/downloader.js
+++ b/utils/downloader.js
@@ -331,89 +331,286 @@ function downloadSingle(url, format, quality, outputDir, browser, onProgress) {
   });
 }
 
-// Download list of items sequentially
-async function downloadMedia(items, outputDir, browser, onProgress) {
-  console.log(`[DEBUG] Media download requested for ${items.length} items.`);
-  const results = [];
-  const startTime = Date.now();
-  let completedCount = 0;
+// Module-level Queue State variables
+let currentProcess = null;
+let isPaused = false;
+let isStopped = false;
+let currentItemIndex = 0;
+let downloadQueue = [];
+let queueOutputDir = '';
+let queueBrowser = null;
+let queueOnProgressCallback = null;
+let queueResults = [];
+let queueStartTime = 0;
+let activeResolve = null;
+let activeReject = null;
 
-  for (let i = 0; i < items.length; i++) {
-    const item = items[i];
-    console.log(`[DEBUG] Queue processing [${i+1}/${items.length}]: "${item.title}"`);
-    
-    // Notify start of this item
-    onProgress({
-      itemId: item.id,
-      index: i,
-      total: items.length,
+function getQueueStats() {
+  const durationSec = ((Date.now() - queueStartTime) / 1000).toFixed(1);
+  const completedCount = queueResults.filter(r => r.success).length;
+  return {
+    totalItems: downloadQueue.length,
+    completed: completedCount,
+    duration: `${durationSec} saniye`,
+    outputDir: queueOutputDir,
+    results: queueResults
+  };
+}
+
+function downloadSingleItemWithProcessRef(item) {
+  return new Promise((resolve, reject) => {
+    let args = [];
+    const outputTemplate = path.join(queueOutputDir, '%(title)s.%(ext)s');
+    const startTime = Date.now();
+    let totalSize = 'Bilinmiyor';
+
+    if (item.format === 'mp3') {
+      const q = item.quality ? `${item.quality}K` : '320K';
+      args = [
+        '--no-playlist',
+        '--ffmpeg-location', FFMPEG_PATH,
+        '-x',
+        '--audio-format', 'mp3',
+        '--audio-quality', q,
+        '-o', outputTemplate
+      ];
+    } else {
+      const res = item.quality || '1080';
+      args = [
+        '--no-playlist',
+        '--ffmpeg-location', FFMPEG_PATH,
+        '-f', `bv*[height<=${res}][ext=mp4]+ba[ext=m4a]/b[height<=${res}][ext=mp4]/bv*[height<=${res}]+ba/b[height<=${res}]/bestvideo+bestaudio/best`,
+        '-o', outputTemplate
+      ];
+    }
+
+    if (queueBrowser) {
+      args.push('--cookies-from-browser', queueBrowser);
+    }
+    args.push(item.url);
+
+    console.log(`[DEBUG] Spawning single downloader process: ${YTDLP_PATH} ${args.join(' ')}`);
+    currentProcess = spawn(YTDLP_PATH, args);
+
+    currentProcess.stdout.on('data', (data) => {
+      const line = data.toString();
+      
+      const sizeMatch = line.match(/of\s+(\d+(?:\.\d+)?\s*[a-zA-Z]+)/);
+      if (sizeMatch) {
+        totalSize = sizeMatch[1];
+      }
+
+      const match = line.match(/\[download\]\s+(\d+\.\d+)%/);
+      if (match) {
+        const percent = parseFloat(match[1]);
+        queueOnProgressCallback({
+          itemId: item.id,
+          index: currentItemIndex,
+          total: downloadQueue.length,
+          percent: percent,
+          status: `İndiriliyor...`,
+          title: item.title
+        });
+      } else if (line.includes('[ExtractAudio]') || line.includes('[Merger]')) {
+        queueOnProgressCallback({
+          itemId: item.id,
+          index: currentItemIndex,
+          total: downloadQueue.length,
+          percent: 95,
+          status: `İşleniyor/Dönüştürülüyor...`,
+          title: item.title
+        });
+      }
+    });
+
+    currentProcess.stderr.on('data', (data) => {
+      console.warn(`[DEBUG] [yt-dlp stderr]:`, data.toString());
+    });
+
+    currentProcess.on('close', (code) => {
+      console.log(`[DEBUG] Single downloader process exited with code ${code}`);
+      currentProcess = null;
+      if (code === 0) {
+        const durationSec = ((Date.now() - startTime) / 1000).toFixed(1);
+        resolve({
+          size: totalSize,
+          duration: `${durationSec} saniye`
+        });
+      } else {
+        reject(new Error(`Download exited with code ${code}`));
+      }
+    });
+  });
+}
+
+async function processQueue() {
+  if (isStopped) {
+    activeResolve({
+      success: false,
+      stopped: true,
+      stats: getQueueStats()
+    });
+    return;
+  }
+
+  if (isPaused) {
+    queueOnProgressCallback({
+      itemId: downloadQueue[currentItemIndex].id,
+      index: currentItemIndex,
+      total: downloadQueue.length,
       percent: 0,
-      status: `İndiriliyor...`,
+      status: `Duraklatıldı`,
+      title: downloadQueue[currentItemIndex].title
+    });
+    return;
+  }
+
+  if (currentItemIndex >= downloadQueue.length) {
+    activeResolve({
+      success: true,
+      stats: getQueueStats()
+    });
+    return;
+  }
+
+  const item = downloadQueue[currentItemIndex];
+  console.log(`[DEBUG] Queue processing [${currentItemIndex+1}/${downloadQueue.length}]: "${item.title}"`);
+  
+  queueOnProgressCallback({
+    itemId: item.id,
+    index: currentItemIndex,
+    total: downloadQueue.length,
+    percent: 0,
+    status: `İndiriliyor...`,
+    title: item.title
+  });
+
+  try {
+    const result = await downloadSingleItemWithProcessRef(item);
+    
+    queueResults.push({
+      success: true,
+      item,
+      size: result.size,
+      duration: result.duration
+    });
+
+    queueOnProgressCallback({
+      itemId: item.id,
+      index: currentItemIndex,
+      total: downloadQueue.length,
+      percent: 100,
+      status: `Tamamlandı`,
       title: item.title
     });
 
-    try {
-      const result = await downloadSingle(item.url, item.format, item.quality, outputDir, browser, (percent, status) => {
-        onProgress({
-          itemId: item.id,
-          index: i,
-          total: items.length,
-          percent: percent,
-          status: status,
-          title: item.title
-        });
-      });
+    currentItemIndex++;
+    processQueue(); // Process next item
 
-      completedCount++;
-      results.push({
-        success: true,
-        item,
-        size: result.size,
-        duration: result.duration
-      });
-
-      // Notify completion of this item
-      onProgress({
-        itemId: item.id,
-        index: i,
-        total: items.length,
-        percent: 100,
-        status: `Tamamlandı`,
-        title: item.title
-      });
-
-    } catch (error) {
-      console.error(`[DEBUG] Queue error on item "${item.title}":`, error);
-      results.push({
+  } catch (error) {
+    if (isStopped) {
+      console.log('[DEBUG] Process aborted by user stop command.');
+      activeResolve({
         success: false,
-        item,
-        error: error.message
+        stopped: true,
+        stats: getQueueStats()
       });
+      return;
+    }
 
-      onProgress({
-        itemId: item.id,
-        index: i,
-        total: items.length,
-        percent: 0,
-        status: `Hata`,
-        title: item.title,
-        failed: true
-      });
+    if (isPaused) {
+      console.log('[DEBUG] Process suspended by user pause command.');
+      return;
+    }
+
+    console.error(`[DEBUG] Queue error on item "${item.title}":`, error);
+    queueResults.push({
+      success: false,
+      item,
+      error: error.message
+    });
+
+    queueOnProgressCallback({
+      itemId: item.id,
+      index: currentItemIndex,
+      total: downloadQueue.length,
+      percent: 0,
+      status: `Hata`,
+      title: item.title,
+      failed: true
+    });
+
+    currentItemIndex++;
+    processQueue(); // Continue queue on item error
+  }
+}
+
+// Download list of items sequentially
+async function downloadMedia(items, outputDir, browser, onProgress) {
+  return new Promise((resolve, reject) => {
+    console.log(`[DEBUG] Media download requested for ${items.length} items.`);
+    
+    downloadQueue = items;
+    queueOutputDir = outputDir;
+    queueBrowser = browser;
+    queueOnProgressCallback = onProgress;
+    isPaused = false;
+    isStopped = false;
+    currentItemIndex = 0;
+    queueResults = [];
+    queueStartTime = Date.now();
+    activeResolve = resolve;
+    activeReject = reject;
+
+    processQueue();
+  });
+}
+
+function pauseDownload() {
+  console.log('[DEBUG] Pause request received.');
+  isPaused = true;
+  if (currentProcess) {
+    try {
+      currentProcess.kill('SIGINT');
+    } catch (e) {
+      console.error('[DEBUG] Failed to interrupt process on pause:', e);
     }
   }
+  return { success: true };
+}
 
-  const durationSec = ((Date.now() - startTime) / 1000).toFixed(1);
-  return {
-    totalItems: items.length,
-    completed: completedCount,
-    duration: `${durationSec} saniye`,
-    outputDir: outputDir,
-    results: results
-  };
+function resumeDownload() {
+  console.log('[DEBUG] Resume request received.');
+  if (!isPaused) return { success: false, error: 'Not paused' };
+  isPaused = false;
+  processQueue();
+  return { success: true };
+}
+
+function stopDownload() {
+  console.log('[DEBUG] Stop request received.');
+  isStopped = true;
+  if (currentProcess) {
+    try {
+      currentProcess.kill('SIGINT');
+    } catch (e) {
+      console.error('[DEBUG] Failed to interrupt process on stop:', e);
+    }
+  } else if (activeResolve) {
+    activeResolve({
+      success: false,
+      stopped: true,
+      stats: getQueueStats()
+    });
+  }
+  return { success: true };
 }
 
 module.exports = {
   checkDependencies,
   getVideoInfo,
-  downloadMedia
+  downloadMedia,
+  pauseDownload,
+  resumeDownload,
+  stopDownload
 };