const mongoose = require('mongoose');
const bcrypt = require('bcryptjs');

const adminSchema = new mongoose.Schema({
  username: {
    type: String,
    required: true,
    unique: true
  },
  password: {
    type: String,
    required: true
  },
  email: {
    type: String,
    required: true,
    unique: true
  },
  role: {
    type: String,
    enum: ['superadmin', 'admin', 'editor'],
    default: 'editor'
  },
  permissions: [{
    type: String,
    enum: [
      'user:manage',      // 用户管理权限
      'game:manage',      // 游戏管理权限
      'category:manage',  // 分类管理权限
      'media:manage',     // 媒体管理权限
      'system:manage'     // 系统管理权限
    ]
  }],
  status: {
    type: String,
    enum: ['active', 'inactive'],
    default: 'active'
  },
  lastLogin: Date,
  createdBy: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'Admin'
  },
  createdAt: {
    type: Date,
    default: Date.now
  }
});

// 密码加密
adminSchema.pre('save', async function(next) {
  if (this.isModified('password')) {
    this.password = await bcrypt.hash(this.password, 10);
  }
  next();
});

// 根据角色设置默认权限
adminSchema.pre('save', function(next) {
  if (this.isNew || this.isModified('role')) {
    switch (this.role) {
      case 'superadmin':
        this.permissions = [
          'user:manage',
          'game:manage',
          'category:manage',
          'media:manage',
          'system:manage'
        ];
        break;
      case 'admin':
        this.permissions = [
          'game:manage',
          'category:manage',
          'media:manage'
        ];
        break;
      case 'editor':
        this.permissions = [
          'game:manage',
          'media:manage'
        ];
        break;
    }
  }
  next();
});

module.exports = mongoose.model('Admin', adminSchema);