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

const BackupLog = sequelize.define('BackupLog', {
  id: {
    type: DataTypes.INTEGER,
    primaryKey: true,
    autoIncrement: true
  },
  logType: {
    type: DataTypes.ENUM('auto', 'manual'),
    allowNull: false,
    comment: '备份类型：auto自动，manual手动'
  },
  status: {
    type: DataTypes.ENUM('pending', 'running', 'success', 'failed'),
    allowNull: false,
    defaultValue: 'pending',
    comment: '状态：pending待执行，running执行中，success成功，failed失败'
  },
  description: {
    type: DataTypes.STRING,
    allowNull: true,
    comment: '备份描述'
  },
  backupType: {
    type: DataTypes.ENUM('full', 'incremental'),
    allowNull: true,
    comment: '备份类型：full全量，incremental增量'
  },
  filename: {
    type: DataTypes.STRING,
    allowNull: true,
    comment: '备份文件名'
  },
  filePath: {
    type: DataTypes.STRING,
    allowNull: true,
    comment: '备份文件路径'
  },
  fileSize: {
    type: DataTypes.BIGINT,
    allowNull: true,
    comment: '文件大小（字节）'
  },
  errorMessage: {
    type: DataTypes.TEXT,
    allowNull: true,
    comment: '错误信息'
  },
  startTime: {
    type: DataTypes.DATE,
    allowNull: true,
    comment: '开始时间'
  },
  endTime: {
    type: DataTypes.DATE,
    allowNull: true,
    comment: '结束时间'
  },
  duration: {
    type: DataTypes.INTEGER,
    allowNull: true,
    comment: '执行时长（毫秒）'
  },
  includeFiles: {
    type: DataTypes.BOOLEAN,
    defaultValue: false,
    comment: '是否包含文件'
  },
  compressed: {
    type: DataTypes.BOOLEAN,
    defaultValue: false,
    comment: '是否压缩'
  },
  remoteUploads: {
    type: DataTypes.JSON,
    allowNull: true,
    comment: '远端上传结果'
  }
}, {
  tableName: 'backup_logs',
  timestamps: true,
  comment: '备份日志表',
  indexes: [
    { fields: ['logType'] },
    { fields: ['status'] },
    { fields: ['createdAt'] },
    { fields: ['logType', 'createdAt'] }
  ]
});

module.exports = BackupLog;