Initial agent-news: Dart Telegram bot + Claude Code runner + MCP bridge

/news spawns claude-code as a local subprocess (single pod, no cross-container exec on K3s); Claude delivers the digest itself via the send_to_telegram MCP tool. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
2026-07-21 20:40:32 +03:00
commit be09de2ad7
15 changed files with 764 additions and 0 deletions
--- a/bot/lib/telegram.dart
+++ b/bot/lib/telegram.dart
@@ -0,0 +1,85 @@
+import 'dart:convert';
+import 'package:http/http.dart' as http;
+
+class TelegramClient {
+  final String token;
+  final http.Client _http;
+  final String _base;
+
+  TelegramClient(this.token)
+      : _http = http.Client(),
+        _base = 'https://api.telegram.org/bot$token';
+
+  // Долгий polling — ждёт до timeout секунд, возвращает новые апдейты
+  Future<List<Map<String, dynamic>>> getUpdates({
+    required int offset,
+    int timeout = 30,
+  }) async {
+    try {
+      final response = await _http.get(
+        Uri.parse('$_base/getUpdates?offset=$offset&timeout=$timeout&allowed_updates=["message"]'),
+        headers: {'content-type': 'application/json'},
+      ).timeout(Duration(seconds: timeout + 5));
+
+      final data = jsonDecode(response.body) as Map<String, dynamic>;
+      if (data['ok'] != true) return [];
+      return (data['result'] as List<dynamic>).cast<Map<String, dynamic>>();
+    } catch (_) {
+      return [];
+    }
+  }
+
+  Future<void> sendMessage(int chatId, String text, {int? replyToMessageId}) async {
+    final chunks = _splitMessage(text);
+    for (final chunk in chunks) {
+      final payload = <String, dynamic>{
+        'chat_id': chatId,
+        'text': chunk,
+        'parse_mode': 'Markdown',
+      };
+      if (replyToMessageId != null) payload['reply_to_message_id'] = replyToMessageId;
+      try {
+        await _http.post(
+          Uri.parse('$_base/sendMessage'),
+          headers: {'content-type': 'application/json'},
+          body: jsonEncode(payload),
+        );
+      } catch (_) {
+        try {
+          final plain = <String, dynamic>{'chat_id': chatId, 'text': chunk};
+          if (replyToMessageId != null) plain['reply_to_message_id'] = replyToMessageId;
+          await _http.post(
+            Uri.parse('$_base/sendMessage'),
+            headers: {'content-type': 'application/json'},
+            body: jsonEncode(plain),
+          );
+        } catch (_) {}
+      }
+    }
+  }
+
+  Future<void> sendTyping(int chatId) async {
+    try {
+      await _http.post(
+        Uri.parse('$_base/sendChatAction'),
+        headers: {'content-type': 'application/json'},
+        body: jsonEncode({'chat_id': chatId, 'action': 'typing'}),
+      );
+    } catch (_) {}
+  }
+
+  List<String> _splitMessage(String text) {
+    const maxLen = 4000;
+    if (text.length <= maxLen) return [text];
+    final chunks = <String>[];
+    var start = 0;
+    while (start < text.length) {
+      final end = (start + maxLen).clamp(0, text.length);
+      chunks.add(text.substring(start, end));
+      start = end;
+    }
+    return chunks;
+  }
+
+  void dispose() => _http.close();
+}