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iiEsaywebUIapp/lib/core/models/knowledge_base_file.dart

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import 'package:freezed_annotation/freezed_annotation.dart';
import '../utils/json_parsing.dart';
part 'knowledge_base_file.freezed.dart';
/// A file within a knowledge base.
///
/// The new WebUI API returns files from a dedicated endpoint with pagination.
/// Files are deduplicated by content hash (not filename).
@freezed
sealed class KnowledgeBaseFile with _$KnowledgeBaseFile {
const factory KnowledgeBaseFile({
required String id,
required String filename,
Map<String, dynamic>? meta,
required DateTime createdAt,
DateTime? updatedAt,
/// Content hash used for server-side deduplication.
String? contentHash,
}) = _KnowledgeBaseFile;
/// Creates a [KnowledgeBaseFile] from JSON, handling various API formats.
factory KnowledgeBaseFile.fromJson(Map<String, dynamic> json) {
return KnowledgeBaseFile(
id: json['id'] as String,
filename: _extractFilename(json),
meta: json['meta'] as Map<String, dynamic>?,
createdAt: parseDateTime(json['created_at'] ?? json['createdAt']),
updatedAt: parseDateTimeOrNull(json['updated_at'] ?? json['updatedAt']),
contentHash:
(json['hash'] ?? json['content_hash'] ?? json['contentHash'])
as String?,
);
}
}
/// Extracts filename from various possible locations in the JSON.
String _extractFilename(Map<String, dynamic> json) {
if (json.containsKey('filename')) {
return json['filename'] as String? ?? 'Unknown';
}
if (json.containsKey('name')) {
return json['name'] as String? ?? 'Unknown';
}
// Check nested meta object
final meta = json['meta'];
if (meta is Map) {
final name = meta['name'] ?? meta['filename'];
if (name is String) return name;
}
return 'Unknown';
}