feat: full local assets / album sync

2024-10-17 23:33:00 +05:30
parent a09710ec7b
commit c91a2878dc
87 changed files with 2417 additions and 366 deletions
@@ -0,0 +1,55 @@
+import 'dart:async';
+import 'dart:ui' as ui;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_cache_manager/flutter_cache_manager.dart';
+import 'package:immich_mobile/service_locator.dart';
+import 'package:immich_mobile/utils/immich_api_client.dart';
+
+/// An exception for the [ImageLoader] and the Immich image providers
+class ImageLoadingException implements Exception {
+  final String message;
+  const ImageLoadingException(this.message);
+
+  @override
+  String toString() => 'ImageLoadingException: $message';
+}
+
+/// Loads the codec from the URI and sends the events to the [chunkEvents] stream
+///
+/// Credit to [flutter_cached_network_image](https://github.com/Baseflow/flutter_cached_network_image/blob/develop/cached_network_image/lib/src/image_provider/_image_loader.dart)
+/// for this wonderful implementation of their image loader
+class ImageLoader {
+  static Future<ui.Codec> loadImageFromCache(
+    String uri, {
+    required CacheManager cache,
+    required ImageDecoderCallback decode,
+    StreamController<ImageChunkEvent>? chunkEvents,
+  }) async {
+    final stream = cache.getFileStream(
+      uri,
+      withProgress: chunkEvents != null,
+      headers: di<ImApiClient>().headers,
+    );
+
+    await for (final result in stream) {
+      if (result is DownloadProgress) {
+        // We are downloading the file, so update the [chunkEvents]
+        chunkEvents?.add(
+          ImageChunkEvent(
+            cumulativeBytesLoaded: result.downloaded,
+            expectedTotalBytes: result.totalSize,
+          ),
+        );
+      } else if (result is FileInfo) {
+        // We have the file
+        final buffer = await ui.ImmutableBuffer.fromFilePath(result.file.path);
+        final decoded = await decode(buffer);
+        return decoded;
+      }
+    }
+
+    // If we get here, the image failed to load from the cache stream
+    throw const ImageLoadingException('Could not load image from stream');
+  }
+}