#!/usr/bin/env node

/**
 * 飞书卡片消息格式化
 * 生成可点击链接的富文本卡片
 */

const fs = require('fs');
const path = require('path');

const DAILY_DIR = path.join(__dirname, '../../daily');

function getYesterdayDate() {
  const d = new Date();
  d.setDate(d.getDate() - 1);
  return d.toLocaleDateString('zh-CN', {
    year: 'numeric',
    month: '2-digit',
    day: '2-digit',
    timeZone: 'Asia/Shanghai'
  }).replace(/\//g, '-');
}

function parseMarkdown(markdown) {
  const lines = markdown.split('\n');
  const items = [];
  let currentTime = '';
  let totalItems = 0;

  // 解析元数据
  for (let i = 0; i < lines.length; i++) {
    const line = lines[i];
    if (line.startsWith('> 采集时间:')) {
      currentTime = line.replace('> 采集时间:', '').trim();
    }
    if (line.startsWith('> 总条目:')) {
      totalItems = parseInt(line.replace('> 总条目:', '').trim());
    }
  }

  // 解析新闻条目
  const itemRegex = /^(\d+)\.\s+\[([^\]]+)\]\(([^)]+)\)\s+-\s+\*\*([^*]+)\*\*/;
  let currentItem = null;

  for (let i = 0; i < lines.length; i++) {
    const line = lines[i];
    const match = line.match(itemRegex);

    if (match) {
      if (currentItem) {
        items.push(currentItem);
      }

      // 清理URL
      let url = match[3];
      let title = match[2];

      if (url.includes('login?return_to=')) {
        const realPath = decodeURIComponent(url.split('return_to=')[1]);
        url = `https://github.com${realPath}`;
        title = realPath.replace('/', '');
      }

      currentItem = {
        number: match[1],
        title: title,
        url: url,
        source: match[4],
        description: ''
      };
    } else if (currentItem && line.trim().startsWith('>') && !line.includes('采集时间') && !line.includes('总条目')) {
      currentItem.description = line.replace(/^\s*>\s*/, '').trim();
    }
  }

  if (currentItem) {
    items.push(currentItem);
  }

  return { currentTime, totalItems, items };
}

function createFeishuCard(data) {
  const { currentTime, totalItems, items } = data;

  const elements = [
    {
      tag: "div",
      text: {
        tag: "lark_md",
        content: `**⏰ 采集时间**: ${currentTime}\n**📊 总条目**: ${totalItems}条`
      }
    },
    {
      tag: "hr"
    }
  ];

  // 添加新闻条目
  items.forEach((item, index) => {
    const num = ['1️⃣', '2️⃣', '3️⃣', '4️⃣', '5️⃣', '6️⃣', '7️⃣', '8️⃣', '9️⃣', '🔟'][index] || `${index + 1}.`;

    elements.push({
      tag: "div",
      text: {
        tag: "lark_md",
        content: `${num} **${item.title}**\n\`${item.source}\`\n> ${item.description}\n[🔗 点击查看详情](${item.url})`
      }
    });

    // 每条之间加分隔线（除了最后一条）
    if (index < items.length - 1) {
      elements.push({
        tag: "hr"
      });
    }
  });

  // 添加底部提示
  elements.push({
    tag: "hr"
  });
  elements.push({
    tag: "note",
    elements: [
      {
        tag: "plain_text",
        content: "💡 点击链接跳转到GitHub查看详情\n*Generated by AINewsCollector*"
      }
    ]
  });

  return {
    msg_type: "interactive",
    card: {
      header: {
        title: {
          tag: "plain_text",
          content: `📰 AI Daily Brief - ${getYesterdayDate()}`
        },
        template: "blue"
      },
      elements: elements
    }
  };
}

async function main() {
  const yesterday = getYesterdayDate();
  const reportPath = path.join(DAILY_DIR, `${yesterday}.md`);

  if (!fs.existsSync(reportPath)) {
    console.log(`❌ 未找到昨日简报: ${reportPath}`);
    return { success: false, error: 'Report not found' };
  }

  const markdown = fs.readFileSync(reportPath, 'utf8');
  const data = parseMarkdown(markdown);
  const card = createFeishuCard(data);

  console.log(JSON.stringify(card, null, 2));

  return {
    success: true,
    date: yesterday,
    card: card
  };
}

if (require.main === module) {
  main().catch(console.error);
}

module.exports = { main, createFeishuCard, parseMarkdown };