module.exports = {
  main: async (event) => {
    let { data = {}, userInfo } = event;

    const COZE_TOKEN = 'sat_OiXlI4Da5Q99fxmul6pNfExmA6hR898UbxBDwrvjZ638APxRSlFnXbz6zyFedKNG';
    const BOT_ID = '7680345813062680618';

    // 使用流式接口，直接从 SSE 事件中提取回答
    const res = await uniCloud.httpclient.request('https://api.coze.cn/v3/chat', {
      method: 'POST',
      dataType: 'text',
      contentType: 'json',
      timeout: 120000,
      headers: { 'Authorization': 'Bearer ' + COZE_TOKEN },
      data: {
        bot_id: BOT_ID,
        user_id: (userInfo && userInfo.uid) || 'anonymous',
        stream: true,
        auto_save_history: true,
        additional_messages: [{
          role: 'user',
          content: data.message,
          content_type: 'text'
        }]
      }
    });

    // 从 SSE 文本中提取 type=answer 的内容
    let answer = '暂时无法回复，请拨打 400-686-5559 咨询';
    let conversationId = '';
    const text = res.data || '';

    const lines = text.split('\n');
    for (const line of lines) {
      if (!line.startsWith('data:')) continue;
      const d = line.slice(5).trim();
      if (d === '[DONE]' || d === '"[DONE]"') continue;
      try {
        const p = JSON.parse(d);
        if (p.conversation_id) conversationId = p.conversation_id;
        if (p.type === 'answer' && p.content) {
          answer = p.content;
        }
      } catch (e) { /* 跳过非 JSON 行 */ }
    }

    return {
      code: 0,
      msg: 'ok',
      data: { answer, conversation_id: conversationId }
    };
  }
};