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

const FaultCategory = sequelize.define(
  'FaultCategory',
  {
    categoryId: {
      type: DataTypes.STRING,
      primaryKey: true,
      allowNull: false,
      unique: true,
    },
    name: {
      type: DataTypes.STRING,
      allowNull: false,
      unique: true,
      comment: '分类名称',
    },
    description: {
      type: DataTypes.TEXT,
      comment: '分类说明 - 说明此类故障代表什么问题',
    },
    priority: {
      type: DataTypes.INTEGER,
      defaultValue: 0,
      comment: '排序优先级',
    },
    defaultPriority: {
      type: DataTypes.STRING,
      defaultValue: 'medium',
      comment: '默认优先级: critical/high/medium/low',
    },
    expectedDuration: {
      type: DataTypes.INTEGER,
      comment: '预计处理时长(小时)',
    },
    solutions: {
      type: DataTypes.JSON,
      defaultValue: [],
      comment: '常见解决方案',
    },
    isSystem: {
      type: DataTypes.BOOLEAN,
      defaultValue: false,
      comment: '是否系统内置分类',
    },
    isActive: {
      type: DataTypes.BOOLEAN,
      defaultValue: true,
      comment: '是否启用',
    },
    metadata: {
      type: DataTypes.JSON,
      defaultValue: {},
      comment: '扩展字段',
    },
  },
  {
    tableName: 'fault_categories',
    timestamps: true,
    indexes: [{ fields: ['name'] }, { fields: ['isActive'] }, { fields: ['priority'] }],
  }
);

module.exports = FaultCategory;