const familyNames = ['赵', '冯', '钱', '刘', '孙', '李', '周', '吴', '郑', '王', '陈', '杨', '黄', '张', '林', '何', '高', '马', '罗', '梁'];
const givenNames = ['玉岚', '艺莲', '若蓉', '思钰', '婷雅', '恩铭', '浩然', '子涵', '欣怡', '梓萱', '宇轩', '雨桐', '佳琪', '思远', '天乐', '晓峰', '文博', '嘉欣', '雅静', '明辉'];

const colleges = ['设计学院', '管理学院', '艺术学院'];
const deptMap: Record<string, string[]> = {
  '设计学院': ['视觉传达设计系', '环境设计系'],
  '管理学院': ['工商管理系', '会计系', '人力资源系'],
  '艺术学院': ['音乐系', '美术系'],
};

const classMap: Record<string, string[]> = {
  '工商管理系': ['工商管理1班', '工商管理2班'],
  '会计系': ['财务管理1班', '财务管理2班'],
  '人力资源系': ['人力资源1班'],
  '视觉传达设计系': ['平面设计1班', '平面设计2班'],
  '环境设计系': ['室内设计1班', '室内设计2班', '室内设计3班'],
  '音乐系': ['声乐表演1班'],
  '美术系': ['国画1班', '油画1班'],
};

const statuses: Array<'normal' | 'disabled'> = ['normal', 'normal', 'normal', 'normal', 'disabled'];

function randomPick<T>(arr: T[]): T {
  return arr[Math.floor(Math.random() * arr.length)];
}

function maskPhone(phone: string) {
  return phone.substring(0, 3) + '****' + phone.substring(7);
}

// 生成100条教职工数据
const staffList: any[] = [];
for (let i = 0; i < 100; i++) {
  const college = randomPick(colleges);
  const depts = deptMap[college] || [];
  const dept = randomPick(depts);
  const classes = classMap[dept] || [];
  const cls = classes.length > 0 ? randomPick(classes) : '';
  const status = randomPick(statuses);
  const phone = `1${randomPick(['39', '56', '78', '38', '59'])}${String(Math.floor(Math.random() * 100000000)).padStart(8, '0')}`;

  staffList.push({
    id: String(i + 1),
    name: randomPick(familyNames) + randomPick(givenNames),
    phone,
    maskedPhone: maskPhone(phone),
    status,
    college,
    dept,
    className: cls,
  });
}

// 学院树结构（用于左侧导航）
const collegeTree = colleges.map((c) => ({
  id: c,
  name: c,
  children: (deptMap[c] || []).map((d) => ({
    id: d,
    name: d,
    children: (classMap[d] || []).map((cls) => ({
      id: cls,
      name: cls,
    })),
  })),
}));

export default {
  'GET /api/admin/staff': (req: any, res: any) => {
    const { page = '1', pageSize = '10', name, phone, college, dept, className, status } = req.query;
    let filtered = [...staffList];
    if (name) filtered = filtered.filter((s) => s.name.includes(name));
    if (phone) filtered = filtered.filter((s) => s.phone.includes(phone));
    if (college) filtered = filtered.filter((s) => s.college === college);
    if (dept) filtered = filtered.filter((s) => s.dept === dept);
    if (className) filtered = filtered.filter((s) => s.className === className);
    if (status) filtered = filtered.filter((s) => s.status === status);

    const p = Number(page);
    const ps = Number(pageSize);
    const start = (p - 1) * ps;
    res.json({ code: 0, data: { list: filtered.slice(start, start + ps), total: filtered.length, page: p, pageSize: ps }, message: 'ok' });
  },

  'GET /api/admin/staff/college-tree': (_req: any, res: any) => {
    res.json({ code: 0, data: collegeTree, message: 'ok' });
  },

  'POST /api/admin/staff/add': (req: any, res: any) => {
    const { name, phone, college, dept, className } = req.body;
    if (!name || !phone) { res.json({ code: 40000, message: '请填写完整信息' }); return; }
    const newStaff = {
      id: String(staffList.length + 1000),
      name, phone, maskedPhone: maskPhone(phone), status: 'normal' as const,
      college: college || '', dept: dept || '', className: className || '',
    };
    staffList.unshift(newStaff);
    res.json({ code: 0, data: newStaff, message: '新增成功' });
  },

  'POST /api/admin/staff/edit': (req: any, res: any) => {
    const { id, name, phone, college, dept, className } = req.body;
    const staff = staffList.find((s) => s.id === id);
    if (!staff) { res.json({ code: 40000, message: '教职工不存在' }); return; }
    Object.assign(staff, { name, phone, maskedPhone: maskPhone(phone), college, dept, className });
    res.json({ code: 0, data: staff, message: '编辑成功' });
  },

  'POST /api/admin/staff/toggle-status': (req: any, res: any) => {
    const { id } = req.body;
    const staff = staffList.find((s) => s.id === id);
    if (staff) { staff.status = staff.status === 'normal' ? 'disabled' : 'normal'; res.json({ code: 0, message: '操作成功' }); }
    else { res.json({ code: 40000, message: '教职工不存在' }); }
  },

  'POST /api/admin/staff/delete': (req: any, res: any) => {
    const { id } = req.body;
    const idx = staffList.findIndex((s) => s.id === id);
    if (idx > -1) { staffList.splice(idx, 1); res.json({ code: 0, message: '删除成功' }); }
    else { res.json({ code: 40000, message: '教职工不存在' }); }
  },

  'POST /api/admin/staff/batch-delete': (req: any, res: any) => {
    const { ids } = req.body;
    if (!ids || !Array.isArray(ids) || ids.length === 0) { res.json({ code: 40000, message: '请选择要删除的教职工' }); return; }
    let count = 0;
    for (let i = staffList.length - 1; i >= 0; i--) { if (ids.includes(staffList[i].id)) { staffList.splice(i, 1); count++; } }
    res.json({ code: 0, data: { count }, message: `成功删除${count}名教职工` });
  },

  'POST /api/admin/staff/batch-import': (_req: any, res: any) => {
    const imported: any[] = [];
    for (let i = 0; i < 5; i++) {
      const college = randomPick(colleges);
      const dept = randomPick(deptMap[college] || []);
      const phone = `1${randomPick(['39', '56', '78', '38', '59'])}${String(Math.floor(Math.random() * 100000000)).padStart(8, '0')}`;
      const s = { id: String(Date.now() + i), name: randomPick(familyNames) + randomPick(givenNames), phone, maskedPhone: maskPhone(phone), status: 'normal' as const, college, dept, className: '' };
      staffList.unshift(s);
      imported.push(s);
    }
    res.json({ code: 0, data: { count: imported.length }, message: `成功导入${imported.length}名教职工` });
  },

  'POST /api/admin/staff/reset-password': (req: any, res: any) => {
    const { id } = req.body;
    const staff = staffList.find((s) => s.id === id);
    if (staff) { res.json({ code: 0, message: '密码已重置为 123456' }); }
    else { res.json({ code: 40000, message: '教职工不存在' }); }
  },
};