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

const Menu = sequelize.define('Menu', {
  id: {
    type: DataTypes.INTEGER.UNSIGNED,
    primaryKey: true,
    autoIncrement: true,
    comment: '메뉴 고유 식별자'
  },
  parentId: {
    type: DataTypes.INTEGER.UNSIGNED,
    allowNull: true,
    references: {
      model: 'Menus', // 실제 테이블명
      key: 'id'
    },
    comment: '상위 메뉴 ID'
  },
  title: {
    type: DataTypes.STRING,
    allowNull: false,
    comment: '메뉴명'
  },
  icon: {
    type: DataTypes.STRING,
    allowNull: true,
    comment: '아이콘'
  },
  to: {
    type: DataTypes.STRING,
    allowNull: false,
    comment: '라우팅 경로'
  },
  featureCode: {
    type: DataTypes.STRING,
    allowNull: true,
    references: {
      model: 'Features',
      key: 'code'
    },
    comment: '연결된 기능 코드'
  },

  role: {
    type: DataTypes.STRING,
    allowNull: false,
    defaultValue: 'user',
    comment: '권한 역할'
  },
  order: {
    type: DataTypes.INTEGER,
    allowNull: false,
    defaultValue: 0,
    comment: '정렬 순서'
  },
  visible: {
    type: DataTypes.BOOLEAN,
    allowNull: false,
    defaultValue: true,
    comment: '표시 여부'
  },
  createdAt: {
    type: DataTypes.DATE,
    allowNull: false,
    comment: '생성일'
  },
  updatedAt: {
    type: DataTypes.DATE,
    allowNull: false,
    comment: '수정일'
  }
}, {
  tableName: 'Menus',
  comment: '서비스 내 메뉴 구조 및 정보를 저장하는 테이블',
  timestamps: true
});

Menu.associate = (models) => {
  Menu.belongsTo(models.Feature, {
    foreignKey: 'featureCode',
    targetKey: 'code',
  });
  Menu.belongsTo(models.Menu, {
    as: 'parent',
    foreignKey: 'parentId',
  });
  Menu.hasMany(models.Menu, {
    as: 'children',
    foreignKey: 'parentId',
  });
};

// 자기참조 관계를 associate에서 명확히 선언
Menu.associate = (models) => {
  Menu.hasMany(models.Menu, { foreignKey: 'parentId', as: 'children' });
  Menu.belongsTo(models.Menu, { foreignKey: 'parentId', as: 'parent' });
};

module.exports = Menu;