const { DataTypes } = require('sequelize');
const { sequelize } = require('../db');
const User = require('./User');
const InventoryPlan = require('./InventoryPlan');
const InventoryTask = require('./InventoryTask');
const Room = require('./Room');
const Rack = require('./Rack');

const PendingDevice = sequelize.define('PendingDevice', {
  pendingId: {
    type: DataTypes.STRING,
    primaryKey: true,
    allowNull: false,
    unique: true
  },
  serialNumber: {
    type: DataTypes.STRING,
    allowNull: false,
    comment: '设备序列号'
  },
  deviceName: {
    type: DataTypes.STRING,
    allowNull: true,
    comment: '设备名称'
  },
  deviceType: {
    type: DataTypes.STRING,
    allowNull: true,
    defaultValue: 'other',
    comment: '设备类型: server, switch, router, storage, other'
  },
  roomId: {
    type: DataTypes.STRING,
    allowNull: true,
    references: {
      model: Room,
      key: 'roomId'
    },
    comment: '所属机房ID'
  },
  rackId: {
    type: DataTypes.STRING,
    allowNull: true,
    references: {
      model: Rack,
      key: 'rackId'
    },
    comment: '所属机柜ID'
  },
  position: {
    type: DataTypes.INTEGER,
    allowNull: true,
    comment: 'U位'
  },
  height: {
    type: DataTypes.INTEGER,
    allowNull: true,
    defaultValue: 1,
    comment: '高度(U)'
  },
  powerConsumption: {
    type: DataTypes.FLOAT,
    allowNull: true,
    defaultValue: 0,
    comment: '功率(W)'
  },
  model: {
    type: DataTypes.STRING,
    allowNull: true,
    comment: '设备型号'
  },
  brand: {
    type: DataTypes.STRING,
    allowNull: true,
    comment: '品牌'
  },
  ipAddress: {
    type: DataTypes.STRING,
    allowNull: true,
    comment: 'IP地址'
  },
  purchaseDate: {
    type: DataTypes.DATE,
    allowNull: true,
    comment: '购买日期'
  },
  warrantyExpiry: {
    type: DataTypes.DATE,
    allowNull: true,
    comment: '保修到期'
  },
  description: {
    type: DataTypes.TEXT,
    allowNull: true,
    comment: '描述'
  },
  customFields: {
    type: DataTypes.JSON,
    defaultValue: {},
    allowNull: true
  },
  status: {
    type: DataTypes.STRING,
    defaultValue: 'pending',
    comment: 'pending: 待同步, synced: 已同步, deleted: 已删除'
  },
  planId: {
    type: DataTypes.STRING,
    allowNull: true,
    references: {
      model: InventoryPlan,
      key: 'planId'
    },
    comment: '关联的盘点计划ID'
  },
  taskId: {
    type: DataTypes.STRING,
    allowNull: true,
    references: {
      model: InventoryTask,
      key: 'taskId'
    },
    comment: '关联的盘点任务ID'
  },
  createdBy: {
    type: DataTypes.STRING,
    allowNull: true,
    references: {
      model: User,
      key: 'userId'
    },
    comment: '创建人'
  },
  syncedAt: {
    type: DataTypes.DATE,
    allowNull: true,
    comment: '同步时间'
  },
  syncedBy: {
    type: DataTypes.STRING,
    allowNull: true,
    references: {
      model: User,
      key: 'userId'
    },
    comment: '同步人'
  },
  syncedDeviceId: {
    type: DataTypes.STRING,
    allowNull: true,
    comment: '同步后生成的设备ID'
  },
  remark: {
    type: DataTypes.TEXT,
    allowNull: true,
    comment: '备注'
  }
}, {
  tableName: 'pending_devices',
  timestamps: true,
  indexes: [
    { fields: ['serialNumber'] },
    { fields: ['status'] },
    { fields: ['planId'] },
    { fields: ['taskId'] },
    { fields: ['createdBy'] },
    { fields: ['roomId'] },
    { fields: ['rackId'] }
  ]
});

PendingDevice.belongsTo(User, { foreignKey: 'createdBy', as: 'Creator' });
PendingDevice.belongsTo(User, { foreignKey: 'syncedBy', as: 'Syncer' });
PendingDevice.belongsTo(InventoryPlan, { foreignKey: 'planId', as: 'Plan' });
PendingDevice.belongsTo(InventoryTask, { foreignKey: 'taskId', as: 'Task' });
PendingDevice.belongsTo(Room, { foreignKey: 'roomId', as: 'Room' });
PendingDevice.belongsTo(Rack, { foreignKey: 'rackId', as: 'Rack' });

module.exports = PendingDevice;