feat/fix: иконки у каналов/групп/ботов, + миниатюры и иконки к видам медиа на экране чатов

2026-08-10 00:04:16 +07:00
parent 05ca3a9413
commit 8c8c87daaf
13 changed files with 1424 additions and 162 deletions
@@ -0,0 +1,108 @@
+import 'dart:convert';
+
+enum ChatPreviewKind {
+  photo,
+  video,
+  videoNote,
+  audio,
+  file,
+  sticker,
+  contact,
+  location,
+  poll,
+  share,
+  call,
+  missedCall,
+  videoCall,
+  missedVideoCall,
+  control,
+  other,
+}
+
+const Map<ChatPreviewKind, String> _kindToCode = {
+  ChatPreviewKind.photo: 'photo',
+  ChatPreviewKind.video: 'video',
+  ChatPreviewKind.videoNote: 'videoNote',
+  ChatPreviewKind.audio: 'audio',
+  ChatPreviewKind.file: 'file',
+  ChatPreviewKind.sticker: 'sticker',
+  ChatPreviewKind.contact: 'contact',
+  ChatPreviewKind.location: 'location',
+  ChatPreviewKind.poll: 'poll',
+  ChatPreviewKind.share: 'share',
+  ChatPreviewKind.call: 'call',
+  ChatPreviewKind.missedCall: 'missedCall',
+  ChatPreviewKind.videoCall: 'videoCall',
+  ChatPreviewKind.missedVideoCall: 'missedVideoCall',
+  ChatPreviewKind.control: 'control',
+  ChatPreviewKind.other: 'other',
+};
+
+final Map<String, ChatPreviewKind> _codeToKind = {
+  for (final e in _kindToCode.entries) e.value: e.key,
+};
+
+class ChatPreviewThumb {
+  final String source;
+  final bool video;
+
+  const ChatPreviewThumb({required this.source, this.video = false});
+
+  Map<String, dynamic> toMap() => {'s': source, if (video) 'v': true};
+
+  static ChatPreviewThumb? fromMap(dynamic raw) {
+    if (raw is! Map) return null;
+    final source = raw['s']?.toString();
+    if (source == null || source.isEmpty) return null;
+    return ChatPreviewThumb(source: source, video: raw['v'] == true);
+  }
+}
+
+class ChatPreviewMedia {
+  final ChatPreviewKind kind;
+  final List<ChatPreviewThumb> thumbs;
+  final String? label;
+  final String? detail;
+
+  const ChatPreviewMedia({
+    required this.kind,
+    this.thumbs = const [],
+    this.label,
+    this.detail,
+  });
+
+  bool get captioned => label == null && detail == null;
+
+  Map<String, dynamic> toMap() => {
+    'k': _kindToCode[kind],
+    if (thumbs.isNotEmpty) 't': [for (final thumb in thumbs) thumb.toMap()],
+    if (label != null) 'l': label,
+    if (detail != null) 'd': detail,
+  };
+
+  String encode() => jsonEncode(toMap());
+
+  static ChatPreviewMedia? decode(String? raw) {
+    if (raw == null || raw.isEmpty) return null;
+    try {
+      return fromMap(jsonDecode(raw));
+    } catch (_) {
+      return null;
+    }
+  }
+
+  static ChatPreviewMedia? fromMap(dynamic raw) {
+    if (raw is! Map) return null;
+    final kind = _codeToKind[raw['k']?.toString()];
+    if (kind == null) return null;
+    final thumbsRaw = raw['t'];
+    return ChatPreviewMedia(
+      kind: kind,
+      thumbs: thumbsRaw is List
+          ? [for (final item in thumbsRaw) ?ChatPreviewThumb.fromMap(item)]
+          : const [],
+      label: raw['l']?.toString(),
+      detail: raw['d']?.toString(),
+    );
+  }
+}