zl-q
89 lines
2.6 KiB
Dart
89 lines
2.6 KiB
Dart
// ignore_for_file: invalid_use_of_protected_member, invalid_use_of_visible_for_testing_member
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part of 'chat_bloc.dart';
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extension _ChatBlocAttachments on ChatBloc {
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void _syncUploadedAttachments({
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required String messageId,
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required List<UploadedAttachment> uploadedAttachments,
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}) {
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if (uploadedAttachments.isEmpty) {
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_markAttachmentUploadDone(messageId);
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return;
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}
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final items = state.items.map((item) {
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if (item is! TextMessageItem || item.id != messageId) {
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return item;
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}
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final synced = item.attachments.map((attachment) {
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final localPath = attachment['path'];
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if (localPath is! String || localPath.isEmpty) {
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return <String, dynamic>{...attachment, 'uploading': false};
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}
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UploadedAttachment? matched;
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for (final candidate in uploadedAttachments) {
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if (candidate.localPath == localPath) {
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matched = candidate;
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break;
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}
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}
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if (matched == null) {
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return <String, dynamic>{...attachment, 'uploading': false};
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}
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return <String, dynamic>{
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...attachment,
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'url': matched.url,
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'mimeType': matched.mimeType,
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'uploading': false,
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};
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}).toList();
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return item.copyWith(attachments: synced);
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}).toList();
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emit(state.copyWith(items: items));
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}
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void _markAttachmentUploadDone(String messageId) {
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final items = state.items.map((item) {
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if (item is! TextMessageItem || item.id != messageId) {
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return item;
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}
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final done = item.attachments
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.map(
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(attachment) => <String, dynamic>{
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...attachment,
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'uploading': false,
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},
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)
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.toList();
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return item.copyWith(attachments: done);
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}).toList();
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emit(state.copyWith(items: items));
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}
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Future<Uint8List?> _loadAttachmentPreview(String previewPath) async {
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final cached = _attachmentPreviewCache[previewPath];
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if (cached != null) {
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return cached;
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}
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final pending = _attachmentPreviewInflight[previewPath];
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if (pending != null) {
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return pending;
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}
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final future = (() async {
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try {
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final bytes = await _service.fetchAttachmentPreview(previewPath);
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_attachmentPreviewCache[previewPath] = bytes;
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return bytes;
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} catch (_) {
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return null;
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} finally {
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_attachmentPreviewInflight.remove(previewPath);
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}
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})();
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_attachmentPreviewInflight[previewPath] = future;
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return future;
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}
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}
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