fix: add Chromecast video progress tracking

components/Chromecast.tsx

@@ -1,5 +1,8 @@
 import { Feather } from "@expo/vector-icons";
-import { useCallback, useEffect } from "react";
+import type { PlaybackProgressInfo } from "@jellyfin/sdk/lib/generated-client/models";
+import { getPlaystateApi } from "@jellyfin/sdk/lib/utils/api";
+import { useAtomValue } from "jotai";
+import { useCallback, useEffect, useRef } from "react";
 import { Platform } from "react-native";
 import { Pressable } from "react-native-gesture-handler";
 import GoogleCast, {
@@ -10,6 +13,7 @@ import GoogleCast, {
   useMediaStatus,
   useRemoteMediaClient,
 } from "react-native-google-cast";
+import { apiAtom, userAtom } from "@/providers/JellyfinProvider";
 import { RoundButton } from "./RoundButton";
 
 export function Chromecast({
@@ -24,6 +28,10 @@ export function Chromecast({
   const sessionManager = GoogleCast.getSessionManager();
   const discoveryManager = GoogleCast.getDiscoveryManager();
   const mediaStatus = useMediaStatus();
+  const api = useAtomValue(apiAtom);
+  const user = useAtomValue(userAtom);
+
+  const lastReportedProgressRef = useRef(0);
 
   useEffect(() => {
     (async () => {
@@ -36,6 +44,53 @@ export function Chromecast({
     })();
   }, [client, devices, castDevice, sessionManager, discoveryManager]);
 
+  // Report video progress to Jellyfin server
+  useEffect(() => {
+    if (
+      !api ||
+      !user?.Id ||
+      !mediaStatus ||
+      !mediaStatus.mediaInfo?.contentId
+    ) {
+      return;
+    }
+
+    const streamPosition = mediaStatus.streamPosition || 0;
+
+    // Report every 10 seconds
+    if (Math.abs(streamPosition - lastReportedProgressRef.current) < 10) {
+      return;
+    }
+
+    const contentId = mediaStatus.mediaInfo.contentId;
+    const positionTicks = Math.floor(streamPosition * 10000000);
+    const isPaused = mediaStatus.playerState === "paused";
+    const streamUrl = mediaStatus.mediaInfo.contentUrl || "";
+    const isTranscoding = streamUrl.includes("m3u8");
+
+    const progressInfo: PlaybackProgressInfo = {
+      ItemId: contentId,
+      PositionTicks: positionTicks,
+      IsPaused: isPaused,
+      PlayMethod: isTranscoding ? "Transcode" : "DirectStream",
+      PlaySessionId: contentId,
+    };
+
+    getPlaystateApi(api)
+      .reportPlaybackProgress({ playbackProgressInfo: progressInfo })
+      .then(() => {
+        lastReportedProgressRef.current = streamPosition;
+      })
+      .catch((error) => {
+        console.error("Failed to report Chromecast progress:", error);
+      });
+  }, [
+    api,
+    user?.Id,
+    mediaStatus?.streamPosition,
+    mediaStatus?.mediaInfo?.contentId,
+  ]);
+
   // Android requires the cast button to be present for startDiscovery to work
   const AndroidCastButton = useCallback(
     () =>