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

const TenantBillingDetail = sequelize.define('TenantBillingDetail', {
  id: {
    type: DataTypes.INTEGER,
    primaryKey: true,
    autoIncrement: true,
    comment: '明细ID'
  },
  tenantId: {
    type: DataTypes.INTEGER,
    allowNull: false,
    comment: '租户ID'
  },
  billingPeriodStart: {
    type: DataTypes.DATEONLY,
    allowNull: false,
    comment: '计费周期开始'
  },
  billingPeriodEnd: {
    type: DataTypes.DATEONLY,
    allowNull: false,
    comment: '计费周期结束'
  },
  baseAmount: {
    type: DataTypes.DECIMAL(10, 2),
    defaultValue: 0,
    comment: '基础费用'
  },
  overageApartmentCount: {
    type: DataTypes.INTEGER,
    defaultValue: 0,
    comment: '超额公寓数'
  },
  overageApartmentAmount: {
    type: DataTypes.DECIMAL(10, 2),
    defaultValue: 0,
    comment: '超额公寓费用'
  },
  overageRoomCount: {
    type: DataTypes.INTEGER,
    defaultValue: 0,
    comment: '超额房间数'
  },
  overageRoomAmount: {
    type: DataTypes.DECIMAL(10, 2),
    defaultValue: 0,
    comment: '超额房间费用'
  },
  overageUserCount: {
    type: DataTypes.INTEGER,
    defaultValue: 0,
    comment: '超额用户数'
  },
  overageUserAmount: {
    type: DataTypes.DECIMAL(10, 2),
    defaultValue: 0,
    comment: '超额用户费用'
  },
  totalOverageAmount: {
    type: DataTypes.DECIMAL(10, 2),
    defaultValue: 0,
    comment: '超额费用合计'
  },
  totalAmount: {
    type: DataTypes.DECIMAL(10, 2),
    defaultValue: 0,
    comment: '总费用'
  },
  status: {
    type: DataTypes.ENUM('calculated', 'billed', 'paid', 'waived'),
    defaultValue: 'calculated',
    comment: '状态'
  },
  orderId: {
    type: DataTypes.INTEGER,
    allowNull: true,
    comment: '关联订单ID'
  }
}, {
  tableName: 'tenant_billing_details',
  timestamps: false,
  indexes: [
    { name: 'idx_tenant_period', fields: ['tenantId', 'billingPeriodStart', 'billingPeriodEnd'] },
    { name: 'idx_status', fields: ['status'] }
  ],
  comment: '租户计费明细表'
});

module.exports = TenantBillingDetail;