[mob] Update preview code to use latest api

mobile/lib/services/preview_video_store.dart

@@ -1,5 +1,4 @@
 import "dart:async";
-import "dart:convert";
 import "dart:io";
 
 import "package:dio/dio.dart";
@@ -11,9 +10,9 @@ import "package:logging/logging.dart";
 import "package:path_provider/path_provider.dart";
 import "package:photos/core/network/network.dart";
 import "package:photos/models/file/file.dart";
-import "package:photos/utils/crypto_util.dart";
 import "package:photos/utils/file_download_util.dart";
 import "package:photos/utils/file_util.dart";
+import "package:photos/utils/gzip.dart";
 import "package:video_compress/video_compress.dart";
 
 class PreviewVideoStore {
@@ -27,16 +26,21 @@ class PreviewVideoStore {
 
   Future<void> chunkAndUploadVideo(EnteFile enteFile) async {
     if (!enteFile.isUploaded) return;
-
     final file = await getFile(enteFile, isOrigin: true);
     if (file == null) return;
+    try {
+      // check if playlist already exist
+      await getPlaylist(enteFile);
+      return;
+    } catch (e) {
+      _logger.warning("Failed to get playlist for $enteFile", e);
+    }
     final tmpDirectory = await getApplicationDocumentsDirectory();
     final prefix = "${tmpDirectory.path}/${enteFile.generatedID}";
     Directory(prefix).createSync();
     final mediaInfo = await VideoCompress.compressVideo(
       file.path,
       quality: VideoQuality.Res1280x720Quality,
-      deleteOrigin: true,
     );
     if (mediaInfo?.path == null) return;
 
@@ -49,11 +53,11 @@ class PreviewVideoStore {
     keyinfo.writeAsStringSync("data:text/plain;base64,${key.base64}\n"
         "${keyfile.path}\n");
 
-    final session = await FFmpegKit.executeAsync(
+    final session = await FFmpegKit.execute(
       '-i "${mediaInfo!.path}" '
       '-c copy -f hls -hls_time 10 -hls_flags single_file '
       '-hls_list_size 0 -hls_key_info_file ${keyinfo.path} '
-      '$prefix/video.m3u8',
+      '$prefix/output.m3u8',
     );
 
     final returnCode = await session.getReturnCode();
@@ -61,8 +65,16 @@ class PreviewVideoStore {
     if (ReturnCode.isSuccess(returnCode)) {
       final playlistFile = File("$prefix/output.m3u8");
       final previewFile = File("$prefix/video.ts");
-      await _reportPreview(enteFile, previewFile);
-      await _reportPlaylist(enteFile, playlistFile);
+      final result = await _uploadPreviewVideo(enteFile, previewFile);
+      final String objectID = result.$1;
+      final objectSize = result.$2;
+      await _reportVideoPreview(
+        enteFile,
+        playlistFile,
+        objectID: objectID,
+        objectSize: objectSize,
+      );
+      _logger.info("Video preview uploaded for $enteFile");
     } else if (ReturnCode.isCancel(returnCode)) {
       _logger.warning("FFmpeg command cancelled");
     } else {
@@ -74,46 +86,61 @@ class PreviewVideoStore {
     }
   }
 
-  Future<void> _reportPlaylist(EnteFile file, File playlist) async {
-    _logger.info("Pushing playlist for $file");
-    final encryptionKey = getFileKey(file);
-    final playlistContent = playlist.readAsStringSync();
-    final encryptedPlaylist = await CryptoUtil.encryptChaCha(
-      utf8.encode(playlistContent),
-      encryptionKey,
-    );
-    final encryptedData =
-        CryptoUtil.bin2base64(encryptedPlaylist.encryptedData!);
-    final header = CryptoUtil.bin2base64(encryptedPlaylist.header!);
+  Future<void> _reportVideoPreview(
+    EnteFile file,
+    File playlist, {
+    required String objectID,
+    required int objectSize,
+  }) async {
+    _logger.info("Pushing playlist for ${file.uploadedFileID}");
     try {
+      final encryptionKey = getFileKey(file);
+      final playlistContent = playlist.readAsStringSync();
+      final result = await gzipAndEncryptJson(
+        {
+          "playlist": playlistContent,
+          'type': 'hls_video',
+        },
+        encryptionKey,
+      );
       final _ = await _dio.put(
-        "/files/file-data/playlist",
+        "/files/video-data",
         data: {
-          "fileID": file.generatedID,
-          "model": "hls_video",
-          "encryptedEmbedding": encryptedData,
-          "decryptionHeader": header,
+          "fileID": file.uploadedFileID!,
+          "objectID": objectID,
+          "objectSize": objectSize,
+          "playlist": result.encData,
+          "playlistHeader": result.header,
         },
       );
     } catch (e, s) {
-      _logger.severe(e, s);
+      _logger.severe("Failed to report video preview", e, s);
     }
   }
 
-  Future<void> _reportPreview(EnteFile file, File preview) async {
+  Future<(String, int)> _uploadPreviewVideo(EnteFile file, File preview) async {
     _logger.info("Pushing preview for $file");
     try {
       final response = await _dio.get(
-        "/files/file-data/preview/upload-url/${file.generatedID}",
+        "/files/data/preview-upload-url",
+        queryParameters: {
+          "fileID": file.uploadedFileID!,
+          "type": "vid_preview",
+        },
       );
-      final uploadURL = response.data["uploadURL"];
+      final uploadURL = response.data["url"];
+      final String objectID = response.data["objectID"];
+      final objectSize = preview.lengthSync();
       final _ = await _dio.put(
         uploadURL,
-        data: await preview.readAsBytes(),
+        data: preview.openRead(),
         options: Options(
-          contentType: "application/octet-stream",
+          headers: {
+            Headers.contentLengthHeader: objectSize,
+          },
         ),
       );
+      return (objectID, objectSize);
     } catch (e, s) {
       _logger.severe(e, s);
       rethrow;
@@ -128,25 +155,37 @@ class PreviewVideoStore {
     _logger.info("Getting playlist for $file");
     try {
       final response = await _dio.get(
-        "/files/file-data/playlist/${file.generatedID}",
+        "/files/data/fetch/",
+        queryParameters: {
+          "fileID": file.uploadedFileID,
+          "type": "vid_preview",
+        },
       );
-      final encryptedData = response.data["encryptedEmbedding"];
-      final header = response.data["decryptionHeader"];
+      final encryptedData = response.data["data"]["encryptedData"];
+      final header = response.data["data"]["decryptionHeader"];
       final encryptionKey = getFileKey(file);
-      final playlistData = await CryptoUtil.decryptChaCha(
-        CryptoUtil.base642bin(encryptedData),
+      final playlistData = await decryptAndUnzipJson(
         encryptionKey,
-        CryptoUtil.base642bin(header),
+        encryptedData: encryptedData,
+        header: header,
       );
       final response2 = await _dio.get(
-        "/files/file-data/preview/${file.generatedID}",
+        "/files/data/preview",
+        queryParameters: {
+          "fileID": file.uploadedFileID,
+          "type": "vid_preview",
+        },
       );
-      final previewURL = response2.data["previewURL"];
-      final finalPlaylist =
-          utf8.decode(playlistData).replaceAll('\nvideo.ts', '\n$previewURL');
+      final previewURL = response2.data["url"];
+      // todo: (prateek/neeraj) review this
+      final finalPlaylist = (playlistData["playlist"])
+          .replaceAll('\nvideo.ts', '\n$previewURL')
+          .replaceAll('\noutput.ts', '\n$previewURL');
       final tempDir = await getTemporaryDirectory();
       final playlistFile = File("${tempDir.path}/${file.generatedID}.m3u8");
       await playlistFile.writeAsString(finalPlaylist);
+      _logger.info("Writing playlist to ${playlistFile.path}");
+
       return playlistFile;
     } catch (e, s) {
       _logger.severe(e, s);

mobile/pubspec.lock

@@ -2615,7 +2615,7 @@ packages:
     source: hosted
     version: "1.0.3"
   uuid:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: uuid
       sha256: f33d6bb662f0e4f79dcd7ada2e6170f3b3a2530c28fc41f49a411ddedd576a77