added playlist tracking

background.js

@@ -159,6 +159,45 @@ function navigateTab(tabId, url) {
   return browser.tabs.update(tabId, { url: url });
 }
 
+async function updateTracking(message) {
+  // Get current playlists from storage
+  const { playlists } = await browser.storage.local.get("playlists");
+
+  // Find the video in playlists
+  const result = findVideoInPlaylists(playlists, message.url);
+
+  // If the video is not present in any playlist, do nothing
+  if (!result) {
+    return;
+  }
+
+  const [playlistName, videoIndex, _] = result;
+
+  // Only update for pause and ended events
+  if (message.type === "pause" || message.type === "ended") {
+    // Create a copy of the playlist for immutability
+    const updatedPlaylists = { ...playlists };
+    const targetPlaylist = [...updatedPlaylists[playlistName]];
+
+    // Get the current video object
+    const video = { ...targetPlaylist[videoIndex] };
+
+    // Update the video's status based on message type
+    if (message.type === "pause") {
+      video.status = message.timestamp; // Set status to current timestamp
+    } else if (message.type === "ended") {
+      video.status = "done"; // Set status to "done"
+    }
+
+    // Update the video in the playlist
+    targetPlaylist[videoIndex] = video;
+    updatedPlaylists[playlistName] = targetPlaylist;
+
+    // Save the updated playlists back to storage
+    await browser.storage.local.set({ playlists: updatedPlaylists });
+  }
+}
+
 async function updateHistory(message) {
   const { history: currentHistory } =
     await browser.storage.local.get("history");
@@ -267,9 +306,11 @@ browser.runtime.onMessage.addListener((message, sender, _sendResponse) => {
     case "play":
     case "playing":
     case "pause":
+      updateTracking(message);
       updateHistory(message);
       break;
     case "ended":
+      updateTracking(message);
       updateHistory(message);
       advance(sender.tab.id, message.url);
       break;