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

const Consumable = sequelize.define(
  'Consumable',
  {
    consumableId: {
      type: DataTypes.STRING,
      primaryKey: true,
      allowNull: false,
    },
    name: {
      type: DataTypes.STRING,
      allowNull: false,
    },
    category: {
      type: DataTypes.STRING,
      allowNull: false,
    },
    unit: {
      type: DataTypes.STRING,
      allowNull: false,
      defaultValue: '个',
    },
    currentStock: {
      type: DataTypes.INTEGER,
      allowNull: false,
      defaultValue: 0,
    },
    minStock: {
      type: DataTypes.INTEGER,
      allowNull: false,
      defaultValue: 10,
    },
    maxStock: {
      type: DataTypes.INTEGER,
      allowNull: false,
      defaultValue: 0,
      comment: '最大库存，0表示无限制',
    },
    unitPrice: {
      type: DataTypes.DECIMAL(10, 2),
      allowNull: false,
      defaultValue: 0,
    },
    supplier: {
      type: DataTypes.STRING,
    },
    location: {
      type: DataTypes.STRING,
      comment: '存放位置',
    },
    description: {
      type: DataTypes.TEXT,
    },
    snList: {
      type: DataTypes.JSON,
      allowNull: true,
      defaultValue: [],
      comment: 'SN序列号列表，JSON数组格式',
    },
    status: {
      type: DataTypes.STRING,
      defaultValue: 'active',
    },
    version: {
      type: DataTypes.INTEGER,
      allowNull: false,
      defaultValue: 0,
      comment: '乐观锁版本号',
    },
  },
  {
    tableName: 'consumables',
    timestamps: true,
    indexes: [
      { fields: ['category'] },
      { fields: ['status'] },
      { fields: ['category', 'status'] },
      { fields: ['updatedAt'] },
    ],
  }
);

module.exports = Consumable;