const express = require('express');
const cors = require('cors');
const path = require('path');
const multer = require('multer');
const db = require('./db');
const issueService = require('./issueService');

const app = express();
const PORT = process.env.PORT || 3000;

app.use(cors());
app.use(express.json());

const router = express.Router();
router.use(express.static(path.join(__dirname, 'public')));
router.use('/uploads', express.static(path.join(__dirname, 'uploads')));

// Multer storage for issue attachments
const storage = multer.diskStorage({
  destination: function (req, file, cb) {
    issueService.ensureDirs();
    cb(null, issueService.UPLOADS_DIR);
  },
  filename: function (req, file, cb) {
    const ext = path.extname(file.originalname);
    const safeBase = path.basename(file.originalname, ext).replace(/[^a-zA-Z0-9_-]/g, '_');
    const uniqueSuffix = Date.now() + '-' + Math.round(Math.random() * 1e6);
    cb(null, `${safeBase}_${uniqueSuffix}${ext}`);
  }
});

const upload = multer({
  storage: storage,
  limits: { fileSize: 25 * 1024 * 1024 }, // 25MB max
});

// Ensure giaoban_ghichu table exists
async function ensureTable(dbName) {
  try {
    await db.query(`
      CREATE TABLE IF NOT EXISTS current.giaoban_ghichu (
        id SERIAL PRIMARY KEY,
        maba VARCHAR(50) NOT NULL,
        mabn VARCHAR(20) NOT NULL,
        loai_danhsach VARCHAR(20) NOT NULL,
        ghichu TEXT,
        ngay_capnhat TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
        CONSTRAINT unq_giaoban_item_${dbName ? dbName.replace(/[^a-zA-Z0-9]/g, '_') : 'default'} UNIQUE(maba, loai_danhsach)
      );
    `, [], dbName);
  } catch (err) {
    // If permission or table exists, ignore
  }
}

// 1. Danh sách database
router.get('/api/databases', async (req, res) => {
  try {
    const list = [
      { id: 'an_omon_full_04052026', name: 'BVĐK Ô Môn - Cần Thơ (33 GB - Đầy đủ khoa phòng chuẩn)' },
      { id: 'tuan_dbgovap_full', name: 'BVĐK Gò Vấp - TP.HCM (65 GB - Dữ liệu lớn)' },
      { id: 'binh_bvq12_062026052026042026032026022026', name: 'BV Quận 12 - TP.HCM (21 GB)' },
      { id: 'bvq12_697', name: 'BV Quận 12 - Bản 697 (17 GB)' },
      { id: 'an_dalieu_full_05082026', name: 'BV Da Liễu (31 GB)' },
    ];
    res.json({ success: true, data: list });
  } catch (error) {
    res.status(500).json({ success: false, message: error.message });
  }
});

// Helper function to build namkt and thangkt partition filter
function getThangNamFilter(fromDateStr, toDateStr, prefix = '') {
  try {
    const f = new Date(fromDateStr);
    const t = new Date(toDateStr);
    if (isNaN(f.getTime()) || isNaN(t.getTime())) return '';

    const thangs = new Set();
    const nams = new Set();
    let curr = new Date(f.getFullYear(), f.getMonth(), 1);
    const end = new Date(t.getFullYear(), t.getMonth(), 1);
    let count = 0;
    while (curr <= end && count < 24) {
      thangs.add(String(curr.getMonth() + 1).padStart(2, '0'));
      nams.add(String(curr.getFullYear()));
      curr.setMonth(curr.getMonth() + 1);
      count++;
    }
    const p = prefix ? `${prefix}.` : '';
    const thangsArr = Array.from(thangs).map(m => `'${m}'`).join(',');
    const namsArr = Array.from(nams).map(y => `'${y}'`).join(',');
    return ` AND ${p}namkt IN (${namsArr}) AND ${p}thangkt IN (${thangsArr}) `;
  } catch (e) {
    return '';
  }
}

// Helper for Outpatient query
async function getOutpatientData(database, fromDate, toDate) {
  const params = [fromDate, toDate];
  const fnKb = getThangNamFilter(fromDate, toDate, 'kb');
  const fnLs = getThangNamFilter(fromDate, toDate, 'ls');
  const fnNone = getThangNamFilter(fromDate, toDate, '');

  // A. Thống kê theo Khoa khám bệnh
  const sqlKhoa = `
    SELECT 
      COALESCE(dv.madv, 'KHAC') AS madv,
      COALESCE(dv.tendv, 'Khoa khác') AS tendv,
      COUNT(kb.makb) AS tong_kham,
      SUM(CASE WHEN dt.bhyt IN (1, 2) THEN 1 ELSE 0 END) AS bhyt,
      SUM(CASE WHEN dt.bhyt IN (0, 4) THEN 1 ELSE 0 END) AS thuphi,
      SUM(CASE WHEN kb.dakham = 6 THEN 1 ELSE 0 END) AS chuyenvien
    FROM current.khambenh kb
    LEFT JOIN current.psdangky dk ON kb.mabn = dk.mabn AND kb.makb = dk.makb AND COALESCE(dk.xoa, 0) = 0
    LEFT JOIN current.dmdoituong dt ON dk.madt = dt.madt
    LEFT JOIN current.dmdonvi dv ON kb.madv = dv.madv
    WHERE kb.ngaykcb BETWEEN $1 AND $2 ${fnKb}
      AND COALESCE(kb.xoa, 0) = 0
      AND COALESCE(kb.dakham, 0) != 0
    GROUP BY dv.madv, dv.tendv
    ORDER BY tong_kham DESC;
  `;

  // B. Bệnh án ngoại trú (Mới vs Tái khám)
  const sqlBANT = `
    SELECT 
      SUM(CASE WHEN COALESCE(dk.taikham, 0) = 0 THEN 1 ELSE 0 END) AS moi,
      SUM(CASE WHEN COALESCE(dk.taikham, 0) = 1 THEN 1 ELSE 0 END) AS taikham,
      COUNT(*) AS tong
    FROM current.bnnoitru nt
    JOIN current.psdangky dk ON nt.mabn = dk.mabn AND nt.makb = dk.makb AND COALESCE(dk.xoa, 0) = 0
    WHERE nt.namvien = 0 AND COALESCE(nt.xoa, 0) = 0
      AND nt.ngayvv BETWEEN $1 AND $2;
  `;

  // C. Chuyên khoa YDCT
  const sqlYDCT = `
    SELECT 
      SUM(CASE WHEN cls.tencls ILIKE '%Điện châm%' THEN ls.soluong ELSE 0 END) AS dien_cham,
      SUM(CASE WHEN cls.tencls ILIKE '%Vật lý trị liệu%' OR cls.tencls ILIKE '%VLTL%' OR cls.macls IN ('DI131','DI135') THEN ls.soluong ELSE 0 END) AS vltl,
      SUM(CASE WHEN cls.tencls ILIKE '%Sắc thuốc%' THEN ls.soluong ELSE 0 END) AS sac_thuoc,
      SUM(CASE WHEN cls.tencls ILIKE '%Cấy chỉ%' OR cls.tencls ILIKE '%Chôn chỉ%' THEN ls.soluong ELSE 0 END) AS cay_chi
    FROM current.chidinhcls ls
    JOIN current.dmcls cls ON ls.macls = cls.macls
    WHERE ls.ngaykcb BETWEEN $1 AND $2 ${fnLs}
      AND COALESCE(ls.xoa, 0) = 0;
  `;

  // D. Cận lâm sàng
  const sqlCLS = `
    SELECT 
      cls.kho,
      cls.maloai,
      COALESCE(loaicls.tenloai, cls.maloai) AS tenloai,
      COUNT(DISTINCT ls.makb) AS so_bn,
      COUNT(*) AS so_luot
    FROM current.chidinhcls ls
    JOIN current.dmcls cls ON ls.macls = cls.macls
    LEFT JOIN current.dmloaicls loaicls ON cls.maloai = loaicls.maloai
    WHERE ls.ngaykcb BETWEEN $1 AND $2 ${fnLs}
      AND COALESCE(ls.xoa, 0) = 0
      AND cls.kho IN ('XN', 'HA', 'CN')
    GROUP BY cls.kho, cls.maloai, loaicls.tenloai
    ORDER BY cls.kho, count(*) DESC;
  `;

  // E. Top 10 chẩn đoán
  const sqlTop10 = `
    SELECT maicd, kqcdoan, COUNT(*) AS sl
    FROM current.khambenh
    WHERE ngaykcb BETWEEN $1 AND $2 ${fnNone}
      AND COALESCE(xoa, 0) = 0
      AND maicd IS NOT NULL AND maicd != ''
    GROUP BY maicd, kqcdoan
    ORDER BY sl DESC
    LIMIT 10;
  `;

  // F. Tiêm ngừa
  const sqlTiemNgua = `
    SELECT COUNT(kb.makb) AS sl
    FROM current.khambenh kb
    LEFT JOIN current.dmphong ph ON kb.maphong = ph.maphong
    LEFT JOIN current.dmdonvi dv ON kb.madv = dv.madv
    WHERE kb.ngaykcb BETWEEN $1 AND $2 ${fnKb}
      AND COALESCE(kb.xoa, 0) = 0
      AND COALESCE(kb.dakham, 0) != 0
      AND (
        COALESCE(ph.loai_bc_giaoban, 0) = 2 OR 
        ph.maphong = 'TN' OR 
        dv.madv = 'PTN' OR 
        ph.tenphong ILIKE '%Tiêm ngừa%' OR 
        ph.tenphong ILIKE '%Tiêm chủng%'
      );
  `;

  const [resKhoa, resBANT, resYDCT, resCLS, resTop10, resTiemNgua] = await Promise.all([
    db.query(sqlKhoa, params, database),
    db.query(sqlBANT, params, database),
    db.query(sqlYDCT, params, database),
    db.query(sqlCLS, params, database),
    db.query(sqlTop10, params, database),
    db.query(sqlTiemNgua, params, database),
  ]);

  return {
    khoa: resKhoa.rows,
    bant: resBANT.rows[0] || { moi: 0, taikham: 0, tong: 0 },
    ydct: resYDCT.rows[0] || { dien_cham: 0, vltl: 0, sac_thuoc: 0, cay_chi: 0 },
    cls: resCLS.rows,
    top10: resTop10.rows,
    tiemngua: parseInt(resTiemNgua.rows[0]?.sl || 0, 10),
  };
}

// 2. API Báo cáo Giao ban Ngoại trú
router.get('/api/giao-ban-ngoai-tru', async (req, res) => {
  try {
    const { database, from, to, compareFrom, compareTo } = req.query;
    const dbName = database || process.env.PG_DATABASE;
    const fromDate = from || '2026-03-01 00:00:00';
    const toDate = to || '2026-03-31 23:59:59';

    const currentData = await getOutpatientData(dbName, fromDate, toDate);

    let compareData = null;
    if (compareFrom && compareTo) {
      compareData = await getOutpatientData(dbName, compareFrom, compareTo);
    }

    res.json({
      success: true,
      data: {
        current: currentData,
        compare: compareData,
        periodCurrent: { from: fromDate, to: toDate },
        periodCompare: compareFrom && compareTo ? { from: compareFrom, to: compareTo } : null,
      },
    });
  } catch (error) {
    console.error('Error in /api/giao-ban-ngoai-tru:', error);
    res.status(500).json({ success: false, message: error.message });
  }
});

// Helper for Inpatient query
async function getInpatientData(database, fromDate, toDate) {
  const params = [fromDate, toDate];

  const sqlKhoa = `
    SELECT 
      dv.madv, 
      dv.tendv,
      -- 1. Bệnh cũ (tồn đầu kỳ)
      SUM(CASE WHEN nt.ngayvv < $1 AND (nt.ravien = 0 OR nt.ngayrv >= $1) THEN 1 ELSE 0 END) AS benh_cu,
      -- 2. Bệnh mới (vào viện trong kỳ)
      SUM(CASE WHEN nt.ngayvv BETWEEN $1 AND $2 THEN 1 ELSE 0 END) AS benh_moi,
      -- 3. Xuất viện:
      SUM(CASE WHEN nt.ngayrv BETWEEN $1 AND $2 AND nt.ravien = 1 AND COALESCE(nt.makq, '01') NOT IN ('04','05','06') THEN 1 ELSE 0 END) AS on_xin_ve,
      SUM(CASE WHEN nt.ngayrv BETWEEN $1 AND $2 AND (nt.makq IN ('04','06') OR (nt.maxt = '09' AND nt.makq = '04')) THEN 1 ELSE 0 END) AS nang_xin_ve,
      SUM(CASE WHEN nt.ngayrv BETWEEN $1 AND $2 AND (nt.ravien = 2 OR nt.maxt = '08') THEN 1 ELSE 0 END) AS tron_vien,
      SUM(CASE WHEN nt.ngayrv BETWEEN $1 AND $2 AND (nt.ravien = 4 OR nt.maxt = '03') THEN 1 ELSE 0 END) AS chuyen_vien,
      SUM(CASE WHEN nt.ngayrv BETWEEN $1 AND $2 AND (nt.ravien = 3 OR nt.maxt = '06') THEN 1 ELSE 0 END) AS tu_vong,
      -- 4. Bệnh hiện còn (tồn cuối kỳ)
      SUM(CASE WHEN nt.ngayvv <= $2 AND (nt.ravien = 0 OR nt.ngayrv > $2) THEN 1 ELSE 0 END) AS benh_hien_con,
      -- 5. Bệnh theo dõi nặng
      SUM(CASE WHEN nt.ngayvv <= $2 AND (nt.ravien = 0 OR nt.ngayrv >= $1) AND (COALESCE(nt.benhnang, 0) = 1 OR COALESCE(nt.mabatheodoi, '') != '' OR dv.madv IN ('17','29')) THEN 1 ELSE 0 END) AS benh_theo_doi,
      -- 6. Chăm sóc Cấp I
      SUM(CASE WHEN nt.ngayvv <= $2 AND (nt.ravien = 0 OR nt.ngayrv >= $1) AND (nt.chamsoc ILIKE '%cấp I%' OR nt.chamsoc ILIKE '%cấp 1%' OR nt.chamsoc IN ('1', 'CS I', 'CSI')) THEN 1 ELSE 0 END) AS chamsoc_cap1
    FROM current.bnnoitru nt
    JOIN current.dmdonvi dv ON nt.madv = dv.madv
    WHERE nt.namvien = 1 AND COALESCE(nt.xoa, 0) = 0
      AND nt.ngayvv >= ($1::date - INTERVAL '180 days')
    GROUP BY dv.madv, dv.tendv
    HAVING SUM(CASE WHEN nt.ngayvv <= $2 AND (nt.ravien = 0 OR nt.ngayrv >= $1) THEN 1 ELSE 0 END) > 0
    ORDER BY benh_moi DESC;
  `;

  const resKhoa = await db.query(sqlKhoa, params, database);
  return {
    khoa: resKhoa.rows,
  };
}

// 3. API Báo cáo Giao ban Nội trú
router.get('/api/giao-ban-noi-tru', async (req, res) => {
  try {
    const { database, from, to, compareFrom, compareTo } = req.query;
    const dbName = database || process.env.PG_DATABASE;
    const fromDate = from || '2026-03-01 00:00:00';
    const toDate = to || '2026-03-31 23:59:59';

    await ensureTable(dbName);
    const currentData = await getInpatientData(dbName, fromDate, toDate);

    let compareData = null;
    if (compareFrom && compareTo) {
      compareData = await getInpatientData(dbName, compareFrom, compareTo);
    }

    res.json({
      success: true,
      data: {
        current: currentData,
        compare: compareData,
        periodCurrent: { from: fromDate, to: toDate },
        periodCompare: compareFrom && compareTo ? { from: compareFrom, to: compareTo } : null,
      },
    });
  } catch (error) {
    console.error('Error in /api/giao-ban-noi-tru:', error);
    res.status(500).json({ success: false, message: error.message });
  }
});

// 4. API Bảng 3: Danh sách Bệnh nhân Chuyển viện
router.get('/api/danh-sach-chuyen-vien', async (req, res) => {
  try {
    const { database, from, to, madv } = req.query;
    const dbName = database || process.env.PG_DATABASE;
    const fromDate = from || '2026-03-01 00:00:00';
    const toDate = to || '2026-03-31 23:59:59';

    await ensureTable(dbName);

    let sqlWhere = `
      WHERE nt.namvien = 1 AND COALESCE(nt.xoa, 0) = 0
        AND nt.ngayrv BETWEEN $1 AND $2
        AND (nt.ravien = 4 OR nt.maxt = '03')
    `;
    const params = [fromDate, toDate];
    if (madv && madv !== 'ALL') {
      params.push(madv);
      sqlWhere += ` AND nt.madv = $${params.length} `;
    }

    const sql = `
      SELECT 
        nt.mabn, 
        nt.maba, 
        bn.holot || ' ' || bn.ten AS hoten,
        bn.diachi,
        to_char(nt.ngayvv, 'DD/MM/YYYY HH24:MI') AS ngayvv,
        to_char(nt.ngayrv, 'DD/MM/YYYY HH24:MI') AS ngayrv,
        COALESCE(dv.tendv, nt.madv) AS tendv,
        nt.kqcdoan AS chandoan_chinh,
        nt.kqcdoanp AS chandoan_phu,
        COALESCE(cls_sub.ketqua_cls, 'Chưa có kết quả') AS ketqua_cls,
        COALESCE(gb.ghichu, nt.ghichu, '') AS ghichu
      FROM current.bnnoitru nt
      JOIN current.dmbenhnhan bn ON nt.mabn = bn.mabn
      LEFT JOIN current.dmdonvi dv ON nt.madv = dv.madv
      LEFT JOIN current.giaoban_ghichu gb ON nt.maba = gb.maba AND gb.loai_danhsach = 'CHUYEN_VIEN'
      LEFT JOIN LATERAL (
        SELECT string_agg(DISTINCT cls.tencls || COALESCE(': ' || NULLIF(ha.ketluan,''), ''), '; ') AS ketqua_cls
        FROM current.chidinhcls ls
        JOIN current.dmcls cls ON ls.macls = cls.macls
        LEFT JOIN current.pskhamha ha ON ls.mabn = ha.mabn AND ls.macls = ha.macls AND ls.makb = ha.makb
        WHERE ls.mabn = nt.mabn AND ls.makb = nt.makb AND COALESCE(ls.xoa, 0) = 0
      ) cls_sub ON true
      ${sqlWhere}
      ORDER BY nt.ngayrv DESC
      LIMIT 100;
    `;

    const result = await db.query(sql, params, dbName);
    const cleanedRows = result.rows.map(row => ({
      ...row,
      ketqua_cls: db.cleanRtf(row.ketqua_cls)
    }));

    res.json({ success: true, data: cleanedRows });
  } catch (error) {
    console.error('Error in /api/danh-sach-chuyen-vien:', error);
    res.status(500).json({ success: false, message: error.message });
  }
});

// 5. API Bảng 4: Danh sách Bệnh nhân Theo dõi & Chăm sóc Cấp I
router.get('/api/danh-sach-theo-doi', async (req, res) => {
  try {
    const { database, from, to, madv } = req.query;
    const dbName = database || process.env.PG_DATABASE;
    const fromDate = from || '2026-03-01 00:00:00';
    const toDate = to || '2026-03-31 23:59:59';

    await ensureTable(dbName);

    let sqlWhere = `
      WHERE nt.namvien = 1 AND COALESCE(nt.xoa, 0) = 0
        AND (nt.ngayvv <= $2 AND (nt.ravien = 0 OR nt.ngayrv >= $1))
        AND (
          COALESCE(nt.benhnang, 0) = 1 OR 
          COALESCE(nt.mabatheodoi, '') != '' OR 
          nt.chamsoc ILIKE '%cấp I%' OR 
          nt.chamsoc ILIKE '%cấp 1%' OR 
          nt.chamsoc IN ('1', 'CS I', 'CSI') OR
          nt.madv IN ('17', '29')
        )
    `;
    const params = [fromDate, toDate];
    if (madv && madv !== 'ALL') {
      params.push(madv);
      sqlWhere += ` AND nt.madv = $${params.length} `;
    }

    const sql = `
      SELECT 
        nt.mabn, 
        nt.maba, 
        bn.holot || ' ' || bn.ten AS hoten,
        bn.diachi,
        to_char(nt.ngayvv, 'DD/MM/YYYY HH24:MI') AS ngayvv,
        to_char(nt.ngayrv, 'DD/MM/YYYY HH24:MI') AS ngayrv,
        COALESCE(dv.tendv, nt.madv) AS tendv,
        nt.kqcdoan AS chandoan_chinh,
        nt.kqcdoanp AS chandoan_phu,
        COALESCE(nt.chamsoc, 'Theo dõi đặc biệt') AS chamsoc,
        COALESCE(cls_sub.ketqua_cls, 'Chưa có kết quả') AS ketqua_cls,
        COALESCE(gb.ghichu, nt.ghichu, '') AS ghichu
      FROM current.bnnoitru nt
      JOIN current.dmbenhnhan bn ON nt.mabn = bn.mabn
      LEFT JOIN current.dmdonvi dv ON nt.madv = dv.madv
      LEFT JOIN current.giaoban_ghichu gb ON nt.maba = gb.maba AND gb.loai_danhsach = 'THEO_DOI'
      LEFT JOIN LATERAL (
        SELECT string_agg(DISTINCT cls.tencls || COALESCE(': ' || NULLIF(ha.ketluan,''), ''), '; ') AS ketqua_cls
        FROM current.chidinhcls ls
        JOIN current.dmcls cls ON ls.macls = cls.macls
        LEFT JOIN current.pskhamha ha ON ls.mabn = ha.mabn AND ls.macls = ha.macls AND ls.makb = ha.makb
        WHERE ls.mabn = nt.mabn AND ls.makb = nt.makb AND COALESCE(ls.xoa, 0) = 0
      ) cls_sub ON true
      ${sqlWhere}
      ORDER BY nt.ngayvv DESC
      LIMIT 100;
    `;

    const result = await db.query(sql, params, dbName);
    const cleanedRows = result.rows.map(row => ({
      ...row,
      ketqua_cls: db.cleanRtf(row.ketqua_cls)
    }));

    res.json({ success: true, data: cleanedRows });
  } catch (error) {
    console.error('Error in /api/danh-sach-theo-doi:', error);
    res.status(500).json({ success: false, message: error.message });
  }
});

// 6. API Cập nhật Ghi chú trực tiếp từ lưới (Bảng 3 & Bảng 4)
router.post('/api/cap-nhat-ghi-chu', async (req, res) => {
  try {
    const { maba, mabn, loai, ghichu, database } = req.body;
    if (!maba || !loai) {
      return res.status(400).json({ success: false, message: 'Thiếu maba hoặc loại danh sách' });
    }
    const dbName = database || process.env.PG_DATABASE;
    await ensureTable(dbName);

    const sqlUpsert = `
      INSERT INTO current.giaoban_ghichu (maba, mabn, loai_danhsach, ghichu, ngay_capnhat)
      VALUES ($1, $2, $3, $4, NOW())
      ON CONFLICT (maba, loai_danhsach)
      DO UPDATE SET ghichu = EXCLUDED.ghichu, ngay_capnhat = NOW();
    `;
    await db.query(sqlUpsert, [maba, mabn || '', loai, ghichu || ''], dbName);

    // Đồng bộ vào bnnoitru.ghichu nếu cần
    try {
      await db.query(`UPDATE current.bnnoitru SET ghichu = $1 WHERE maba = $2;`, [ghichu || '', maba], dbName);
    } catch (e) {
      // ignore
    }

    res.json({ success: true, message: 'Đã lưu ghi chú thành công!' });
  } catch (error) {
    console.error('Error in /api/cap-nhat-ghi-chu:', error);
    res.status(500).json({ success: false, message: error.message });
  }
});

// 7. API Quản lý Issue & Báo lỗi (lưu file và tổng hợp)
router.get('/api/issues', (req, res) => {
  try {
    const list = issueService.getAllIssues();
    res.json({ success: true, data: list });
  } catch (error) {
    res.status(500).json({ success: false, message: error.message });
  }
});

router.post('/api/issues', upload.single('attachment'), (req, res) => {
  try {
    const issue = issueService.createIssue(req.body, req.file);
    res.json({ success: true, data: issue, message: 'Đã ghi nhận báo lỗi thành công!' });
  } catch (error) {
    console.error('Error creating issue:', error);
    res.status(500).json({ success: false, message: error.message });
  }
});

router.put('/api/issues/:id', (req, res) => {
  try {
    const updated = issueService.updateIssue(req.params.id, req.body);
    res.json({ success: true, data: updated, message: 'Cập nhật trạng thái issue thành công!' });
  } catch (error) {
    console.error('Error updating issue:', error);
    res.status(500).json({ success: false, message: error.message });
  }
});

router.delete('/api/issues/:id', (req, res) => {
  try {
    issueService.deleteIssue(req.params.id);
    res.json({ success: true, message: 'Đã xóa issue thành công!' });
  } catch (error) {
    console.error('Error deleting issue:', error);
    res.status(500).json({ success: false, message: error.message });
  }
});

// Mount router on both /web-giao-ban and /
app.use('/web-giao-ban', router);
app.use('/', router);

app.listen(PORT, '0.0.0.0', () => {
  console.log(`=======================================================`);
  console.log(`[DH-HIS] Phần mềm Quản lý Giao ban hằng ngày (Node.js)`);
  console.log(`Server is running at: http://localhost:${PORT}`);
  console.log(`=======================================================`);
});