const Sequelize = require('sequelize');

/**
 * 价格套餐表模型
 * 存储各种价格套餐的配置信息，支持管理员在后台配置和管理
 */
module.exports = (db) => {
  const pricing_plans = db.define("pricing_plans", {
    name: {
      comment: '套餐名称（如：体验套餐、月度套餐等）',
      type: Sequelize.STRING(100),
      allowNull: false,
      defaultValue: ''
    },
    duration: {
      comment: '时长描述（如：7天、30天、永久）',
      type: Sequelize.STRING(50),
      allowNull: false,
      defaultValue: ''
    },
    days: {
      comment: '天数（-1表示永久，0表示无限制）',
      type: Sequelize.INTEGER,
      allowNull: false,
      defaultValue: 0
    },
    price: {
      comment: '售价（元）',
      type: Sequelize.DECIMAL(10, 2),
      allowNull: false,
      defaultValue: 0.00
    },
    original_price: {
      comment: '原价（元），可为空表示无原价',
      type: Sequelize.DECIMAL(10, 2),
      allowNull: true,
      defaultValue: null
    },
    unit: {
      comment: '价格单位',
      type: Sequelize.STRING(20),
      allowNull: false,
      defaultValue: '元'
    },
    discount: {
      comment: '折扣描述（如：8.3折、超值）',
      type: Sequelize.STRING(50),
      allowNull: true,
      defaultValue: null
    },
    features: {
      comment: '功能特性列表（JSON字符串数组）',
      type: Sequelize.TEXT,
      allowNull: false,
      defaultValue: '[]'
    },
    featured: {
      comment: '是否为推荐套餐（1=推荐，0=普通）',
      type: Sequelize.TINYINT(1),
      allowNull: false,
      defaultValue: 0
    },
    is_active: {
      comment: '是否启用（1=启用，0=禁用）',
      type: Sequelize.TINYINT(1),
      allowNull: false,
      defaultValue: 1
    },
    sort_order: {
      comment: '排序顺序（越小越靠前）',
      type: Sequelize.INTEGER,
      allowNull: false,
      defaultValue: 0
    },
    
  }, {
    timestamps: false,
    indexes: [
      {
        unique: false,
        fields: ['is_active']
      },
      {
        unique: false,
        fields: ['is_delete']
      },
      {
        unique: false,
        fields: ['sort_order']
      }
    ]
  });

  // pricing_plans.sync({ force: true });

  return pricing_plans;
}