// msgQueue.js - 基于事件的消息队列
import { EventEmitter } from "events";
import fs from "fs";
import path from "path";
import { EmailSender } from "./mailer.js";
import { SQLiteMessageQueue } from "./sqlite.js";
import { md5 } from "./utils.js";
import axios from "axios";

class MessageQueue extends EventEmitter {
  constructor() {
    super();
    this.queue = new SQLiteMessageQueue();
    this.processing = false;
    // this.queueFile = path.resolve("message_queue.json");K
    this.emailSender = new EmailSender({
      host: "smtp.exmail.qq.com",
      port: 465,
      secure: true,
      auth: {
        user: "jiqiren@axbbaoxian.com",
        pass: "Am13579q",
      },
    });
    this.recipients = [
      "huzhengrong@axbbaoxian.com",
    ];

    // 启动处理器
    this.startProcessor();
  }

  // 添加消息到队列

  // 处理队列
  async startProcessor() {
    setInterval(async () => {
      // 清除状态 不等于 pending的数据
      console.log("开始处理队列");
      try {
        const pendingMessages = this.queue.getPendingMessages();
        if (!this.processing && pendingMessages.length > 0) {
          await this.processQueue(pendingMessages);
        }
      } catch (error) {
        console.error(`❌ 获取待处理消息失败:`, error);
      }
    }, 60 * 60 * 1000); // 1h处理一次
  }

  async processQueue(pendingMessages) {
    this.processing = true;

    let msgMap = {};
    for (const message of pendingMessages) {
      try {
        console.log(`📧 处理消息: ${message.spider_name}`);
        // console.log(typeof message.data);
        // let formdata = JSON.parse(message.data);
        if (!msgMap[message.spider_name]) {
          msgMap[message.spider_name] = message.data;
        } else {
          msgMap[message.spider_name].push(...message.data);
        }

        message.status = "sent";
        message.sent_at = new Date().toISOString();
        this.queue.updateMessageStatus(
          message.id,
          message.status,
          message.sent_at
        );
      } catch (error) {
        console.error(`❌ 消息处理失败: ${message.id}`, error);
        message.status = "failed";
        message.error_message = error.message;
        this.queue.updateMessageStatus(
          message.id,
          message.status,
          null,
          // message.sent_at,
          message.error_message
        );
      }
    }
    let html = "";
    for (const spiderName in msgMap) {
      html += this.generateTable(spiderName, msgMap[spiderName]);
    }
    try {
      this.emailSender.sendBulkEmail(this.recipients, "招标项目最新公告", html);
    } catch (error) {
      console.error(`❌ 通知发送失败: ${error}`);
    }

    this.processing = false;
  }

  generateTable(spiderName, data) {
    let tableHtml = `
    <div style="margin: 30px 0; font-family: Arial, sans-serif;">
      <h2 style="color: #2c3e50; border-bottom: 3px solid #3498db; padding-bottom: 10px; margin-bottom: 20px;">
        🕷️ ${spiderName} (${data.length} 条新增)
      </h2>
      
      <div style="overflow-x: auto; box-shadow: 0 2px 8px rgba(0,0,0,0.1); border-radius: 8px; margin-bottom: 20px;">
        <table style="width: 100%; border-collapse: collapse; background: white; min-width: 800px;">
          <thead>
            <tr style="background: linear-gradient(135deg, #3498db 0%, #2980b9 100%); color: white;">
              <th style="border: 1px solid #ddd; padding: 12px 8px; text-align: left; font-weight: bold; width: 50px;">序号</th>
              <th style="border: 1px solid #ddd; padding: 12px 8px; text-align: left; font-weight: bold; min-width: 300px;">项目名称</th>
              <th style="border: 1px solid #ddd; padding: 12px 8px; text-align: left; font-weight: bold; width: 140px;">发布时间</th>
              <th style="border: 1px solid #ddd; padding: 12px 8px; text-align: left; font-weight: bold; width: 140px;">截止时间</th>
              <th style="border: 1px solid #ddd; padding: 12px 8px; text-align: left; font-weight: bold; width: 100px;">查看详情</th>
            </tr>
          </thead>
          <tbody>
  `;
    data.forEach((item, index) => {
      const rowColor = index % 2 === 0 ? "#f8f9fa" : "white";
      // const publishTime = this.formatDateTime(item.publishTime);
      // const endTime = this.formatDateTime(item.endTime);
      const urls = this.formatUrls(item.urls);

      tableHtml += `
      <tr style="background-color: ${rowColor}; border-bottom: 1px solid #eee;">
        <td style="border: 1px solid #ddd; padding: 10px 8px; text-align: center; font-weight: bold; color: #666;">
          ${index + 1}
        </td>
        <td style="border: 1px solid #ddd; padding: 10px 8px; line-height: 1.4;">
          <div style="font-weight: 500; color: #2c3e50; margin-bottom: 4px;">
            ${item.name}
          </div>
          
        </td>
        <td style="border: 1px solid #ddd; padding: 10px 8px; color: #495057;">
          ${item.publishTime}
        </td>
        <td style="border: 1px solid #ddd; padding: 10px 8px; color: #495057;">
          <div>${item.endTime}</div>
        </td>
        <td style="border: 1px solid #ddd; padding: 10px 8px; text-align: center;">
          ${urls}
        </td>
      </tr>
    `;
    });

    tableHtml += `
          </tbody>
        </table>
      </div>
    </div>
  `;

    return tableHtml;
  }

  getSign(timestamp) {
    let secret = "cpwyyds";
    let uri = "/common/message/push";
    const url = uri + timestamp + secret;
    const myCalc = md5(url);
    let sign =
      myCalc.substring(5, 13) +
      myCalc.substring(29, 31) +
      myCalc.substring(18, 27);
    //sign 转大写
    sign = sign.toUpperCase();
    return sign;
  }

  formatUrls(urls) {
    if (!urls) {
      return '<span style="color: #6c757d;">无链接</span>';
    }

    // 处理数组形式的URLs
    if (Array.isArray(urls)) {
      if (urls.length === 0) {
        return '<span style="color: #6c757d;">无链接</span>';
      }

      if (urls.length === 1) {
        return `<a href="${urls[0]}" target="_blank" style="color: #007bff; text-decoration: none; padding: 6px 12px; background-color: #e3f2fd; border-radius: 4px; font-size: 12px; border: 1px solid #90caf9; display: inline-block;">📄 查看</a>`;
      }

      // 多个链接的情况
      let linksHtml = '<div style="line-height: 1.6;">';
      urls.forEach((url, index) => {
        linksHtml += `<a href="${url}" target="_blank" style="color: #007bff; text-decoration: none; padding: 4px 8px; background-color: #e3f2fd; border-radius: 3px; font-size: 11px; margin: 2px; display: inline-block; border: 1px solid #90caf9;">📄 链接${
          index + 1
        }</a>`;
      });
      linksHtml += "</div>";
      return linksHtml;
    }

    // 处理字符串形式的URL
    if (typeof urls === "string") {
      return `<a href="${urls}" target="_blank" style="color: #007bff; text-decoration: none; padding: 6px 12px; background-color: #e3f2fd; border-radius: 4px; font-size: 12px; border: 1px solid #90caf9; display: inline-block;">📄 查看</a>`;
    }

    return '<span style="color: #6c757d;">链接格式错误</span>';
  }
}

const messageQueue = new MessageQueue();

export { messageQueue };

// export default MessageQueue;