const { DataTypes } = require('sequelize');
const sequelize = require('../config/database');

const SmartCollar = sequelize.define('SmartCollar', {
  id: {
    type: DataTypes.INTEGER,
    primaryKey: true,
    autoIncrement: true
  },
  collar_id: {
    type: DataTypes.STRING,
    allowNull: false,
    unique: true,
    comment: '项圈编号'
  },
  name: {
    type: DataTypes.STRING,
    allowNull: false,
    comment: '项圈名称'
  },
  status: {
    type: DataTypes.ENUM('active', 'inactive', 'maintenance'),
    allowNull: false,
    defaultValue: 'inactive',
    comment: '状态：active-使用中，inactive-未使用，maintenance-维护中'
  },
  battery: {
    type: DataTypes.INTEGER,
    allowNull: false,
    defaultValue: 100,
    validate: {
      min: 0,
      max: 100
    },
    comment: '电池电量(%)'
  },
  remark: {
    type: DataTypes.TEXT,
    allowNull: true,
    comment: '备注'
  },
  created_at: {
    type: DataTypes.DATE,
    allowNull: false,
    defaultValue: DataTypes.NOW,
    comment: '创建时间'
  },
  updated_at: {
    type: DataTypes.DATE,
    allowNull: false,
    defaultValue: DataTypes.NOW,
    comment: '更新时间'
  }
}, {
  tableName: 'smart_collars',
  timestamps: true,
  createdAt: 'created_at',
  updatedAt: 'updated_at',
  paranoid: false,
  indexes: [
    {
      name: 'idx_smart_collar_id',
      fields: ['collar_id']
    },
    {
      name: 'idx_smart_collar_status',
      fields: ['status']
    }
  ]
});

// 钩子函数，在保存前更新更新时间
SmartCollar.beforeSave((collar) => {
  collar.updated_at = new Date();
});

module.exports = SmartCollar;