| 1 | import 'dart:io'; |
| 2 | import 'package:path_provider/path_provider.dart'; |
| 3 | import 'models/message.dart'; |
| 4 | import '../../../core/models/enums.dart'; |
| 5 | |
| 6 | class ExportService { |
| 7 | static Future<String> exportAsMarkdown( |
| 8 | List<Message> messages, { |
| 9 | String? title, |
| 10 | }) async { |
| 11 | final buffer = StringBuffer(); |
| 12 | |
| 13 | if (title != null) { |
| 14 | buffer.writeln('# $title'); |
| 15 | buffer.writeln(); |
| 16 | } |
| 17 | |
| 18 | buffer.writeln( |
| 19 | '*Exported from LocalMind — ${DateTime.now().toIso8601String()}*', |
| 20 | ); |
| 21 | buffer.writeln(); |
| 22 | buffer.writeln('---'); |
| 23 | buffer.writeln(); |
| 24 | |
| 25 | for (final message in messages) { |
| 26 | switch (message.role) { |
| 27 | case MessageRole.user: |
| 28 | buffer.writeln('## 👤 User'); |
| 29 | case MessageRole.assistant: |
| 30 | buffer.writeln('## 🤖 Assistant'); |
| 31 | case MessageRole.system: |
| 32 | buffer.writeln('## ⚙️ System'); |
| 33 | case MessageRole.tool: |
| 34 | buffer.writeln('## 🔧 Tool'); |
| 35 | } |
| 36 | buffer.writeln(); |
| 37 | buffer.writeln(message.content); |
| 38 | buffer.writeln(); |
| 39 | buffer.writeln('*${message.createdAt.toIso8601String()}*'); |
| 40 | buffer.writeln(); |
| 41 | buffer.writeln('---'); |
| 42 | buffer.writeln(); |
| 43 | } |
| 44 | |
| 45 | return buffer.toString(); |
| 46 | } |
| 47 | |
| 48 | static Future<File> exportAndSaveMarkdown( |
| 49 | List<Message> messages, { |
| 50 | String? title, |
| 51 | String? filename, |
| 52 | }) async { |
| 53 | final content = await exportAsMarkdown(messages, title: title); |
| 54 | final dir = await getApplicationDocumentsDirectory(); |
| 55 | final name = |
| 56 | filename ?? 'localmind_export_${DateTime.now().millisecondsSinceEpoch}'; |
| 57 | final file = File('${dir.path}/$name.md'); |
| 58 | return file.writeAsString(content); |
| 59 | } |
| 60 | |
| 61 | static String exportAsText(List<Message> messages, {String? title}) { |
| 62 | final buffer = StringBuffer(); |
| 63 | |
| 64 | if (title != null) { |
| 65 | buffer.writeln(title); |
| 66 | buffer.writeln('=' * title.length); |
| 67 | buffer.writeln(); |
| 68 | } |
| 69 | |
| 70 | for (final message in messages) { |
| 71 | final roleLabel = switch (message.role) { |
| 72 | MessageRole.user => 'USER', |
| 73 | MessageRole.assistant => 'ASSISTANT', |
| 74 | MessageRole.system => 'SYSTEM', |
| 75 | MessageRole.tool => 'TOOL', |
| 76 | }; |
| 77 | buffer.writeln('[$roleLabel]'); |
| 78 | buffer.writeln(message.content); |
| 79 | buffer.writeln(); |
| 80 | } |
| 81 | |
| 82 | return buffer.toString(); |
| 83 | } |
| 84 | } |