#!/usr/bin/env node

/**
 * OpenClaw 飞书消息处理器 - 七牛云上传
 * 
 * 用途：作为 OpenClaw 的飞书消息中间件，处理七牛云相关命令
 * 
 * 使用方式：
 * 1. 在 OpenClaw 配置中注册为飞书消息处理器
 * 2. 或作为独立服务运行，接收 OpenClaw 转发的消息
 */

const fs = require('fs');
const path = require('path');
const { exec } = require('child_process');
const http = require('http');

// ============ 配置 ============

const CONFIG = {
  port: process.env.QINIU_HANDLER_PORT || 3001,
  openclawGateway: {
    host: '127.0.0.1',
    port: 17733
  },
  scriptDir: path.join(__dirname, 'scripts'),
  credentials: path.join(process.env.HOME || process.env.USERPROFILE, '.openclaw/credentials')
};

// ============ 工具函数 ============

function log(...args) {
  const timestamp = new Date().toISOString();
  console.log(`[${timestamp}]`, ...args);
}

// ============ 命令解析 ============

function isQiniuCommand(text) {
  const trimmed = text.trim();
  return /^\/(upload|qiniu-config|qiniu-help)/i.test(trimmed);
}

// ============ 消息处理 ============

async function handleMessage(message) {
  const text = message.content?.text || '';
  
  if (!isQiniuCommand(text)) {
    return { handled: false };
  }
  
  log('处理七牛云命令:', text);
  
  // 调用上传脚本
  const uploadScript = path.join(CONFIG.scriptDir, 'upload-to-qiniu.js');
  
  // 解析命令
  if (text.trim().startsWith('/upload')) {
    return await handleUpload(message, uploadScript);
  }
  
  if (text.trim().startsWith('/qiniu-config')) {
    return await handleConfig(message, uploadScript);
  }
  
  if (text.trim().startsWith('/qiniu-help')) {
    return await handleHelp(message);
  }
  
  return { handled: false };
}

async function handleUpload(message, script) {
  // TODO: 实现文件下载和上传逻辑
  return {
    handled: true,
    reply: '🚧 上传功能开发中...\n\n请使用独立监听器模式：\nhttp://47.83.185.237:3000'
  };
}

async function handleConfig(message, script) {
  const configCmd = message.content.text.replace('/qiniu-config', 'config');
  
  return new Promise((resolve) => {
    exec(`node "${script}" ${configCmd}`, (error, stdout, stderr) => {
      if (error) {
        resolve({
          handled: true,
          reply: `❌ 错误：${stderr || error.message}`
        });
        return;
      }
      resolve({
        handled: true,
        reply: '```\n' + stdout + '\n```'
      });
    });
  });
}

async function handleHelp(message) {
  const helpText = `
🍙 七牛云上传 - 使用帮助

📤 上传文件:
  /upload [目标路径] [存储桶名]
  /upload --original [存储桶名]

⚙️ 配置管理:
  /qiniu-config list
  /qiniu-config set <key> <value>
  /qiniu-config set-bucket <name> <json>
`;
  
  return {
    handled: true,
    reply: helpText
  };
}

// ============ HTTP 服务器 ============

function startServer() {
  const server = http.createServer(async (req, res) => {
    if (req.method !== 'POST') {
      res.writeHead(405);
      res.end('Method Not Allowed');
      return;
    }
    
    let body = '';
    req.on('data', chunk => body += chunk);
    req.on('end', async () => {
      try {
        const event = JSON.parse(body);
        const result = await handleMessage(event.message);
        
        res.writeHead(200, { 'Content-Type': 'application/json' });
        res.end(JSON.stringify(result));
        
      } catch (e) {
        log('处理失败:', e.message);
        res.writeHead(500);
        res.end('Internal Server Error');
      }
    });
  });
  
  server.listen(CONFIG.port, () => {
    log(`🚀 七牛云处理器启动，端口：${CONFIG.port}`);
  });
}

// ============ 主函数 ============

function main() {
  log('🍙 OpenClaw 飞书消息处理器 - 七牛云');
  startServer();
}

main();