matt2dev
be09de2ad7
/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>
83 lines
2.8 KiB
Dart
83 lines
2.8 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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import 'package:mcp_dart/mcp_dart.dart';
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final _token = Platform.environment['TELEGRAM_BOT_TOKEN'] ?? '';
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final _http = HttpClient();
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CallToolResult _ok(String text) => CallToolResult(content: [TextContent(text: text)]);
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CallToolResult _err(String text) =>
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CallToolResult(content: [TextContent(text: 'Ошибка: $text')], isError: true);
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List<String> _splitMessage(String text) {
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const maxLen = 4000;
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if (text.length <= maxLen) return [text];
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final chunks = <String>[];
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var start = 0;
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while (start < text.length) {
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final end = (start + maxLen).clamp(0, text.length);
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chunks.add(text.substring(start, end));
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start = end;
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}
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return chunks;
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}
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Future<void> _sendMessage(int chatId, String text) async {
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for (final chunk in _splitMessage(text)) {
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final req = await _http.postUrl(
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Uri.parse('https://api.telegram.org/bot$_token/sendMessage'),
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);
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req.headers.contentType = ContentType.json;
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req.write(jsonEncode({
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'chat_id': chatId,
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'text': chunk,
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'parse_mode': 'Markdown',
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}));
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final res = await req.close();
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final body = await res.transform(utf8.decoder).join();
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if (res.statusCode >= 400) {
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throw Exception('Telegram sendMessage → ${res.statusCode}: $body');
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}
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}
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}
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void main() {
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final server = McpServer(
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const Implementation(name: 'agent-news', version: '0.1.0'),
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options: const McpServerOptions(
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capabilities: ServerCapabilities(tools: ServerCapabilitiesTools()),
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),
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);
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server.registerTool(
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'send_to_telegram',
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description:
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'Отправляет готовый текст (Markdown) в указанный Telegram-чат. '
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'Единственный способ доставить результат ресёрча пользователю — '
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'вызывай этот тул с финальным оформленным текстом.',
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inputSchema: JsonSchema.object(
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properties: {
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'chat_id': JsonSchema.integer(description: 'ID чата Telegram, куда отправить сообщение'),
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'text': JsonSchema.string(description: 'Готовый текст в Markdown-разметке Telegram'),
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},
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required: ['chat_id', 'text'],
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),
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callback: (args, _) async {
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if (_token.isEmpty) {
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return _err('TELEGRAM_BOT_TOKEN не задан в окружении MCP-сервера');
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}
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try {
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final chatId = args['chat_id'] as int;
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final text = args['text'].toString();
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await _sendMessage(chatId, text);
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return _ok('Отправлено в чат $chatId (${text.length} символов).');
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} catch (e) {
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return _err('$e');
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}
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},
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);
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server.connect(StdioServerTransport());
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}
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