package com.example.config;

import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.core.handlers.MetaObjectHandler;
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.OptimisticLockerInnerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import com.example.security.UserContext;
import org.apache.ibatis.reflection.MetaObject;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.time.LocalDateTime;

@Configuration
public class MyBatisPlusConfig {

    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.ORACLE));
        interceptor.addInnerInterceptor(new OptimisticLockerInnerInterceptor());
        return interceptor;
    }

    @Bean
    public MetaObjectHandler metaObjectHandler() {
        return new MetaObjectHandler() {
            @Override
            public void insertFill(MetaObject metaObject) {
                String username = UserContext.getCurrentUsername();
                this.strictInsertFill(metaObject, "createTime", LocalDateTime.class, LocalDateTime.now());
                this.strictInsertFill(metaObject, "updateTime", LocalDateTime.class, LocalDateTime.now());
                this.strictInsertFill(metaObject, "deleted", Integer.class, 0);
                this.strictInsertFill(metaObject, "version", Integer.class, 1);
                this.strictInsertFill(metaObject, "createBy", String.class, username != null ? username : "系统");
                this.strictInsertFill(metaObject, "updateBy", String.class, username != null ? username : "系统");
            }

            @Override
            public void updateFill(MetaObject metaObject) {
                String username = UserContext.getCurrentUsername();
                this.strictUpdateFill(metaObject, "updateTime", LocalDateTime.class, LocalDateTime.now());
                this.strictUpdateFill(metaObject, "updateBy", String.class, username != null ? username : "系统");
            }
        };
    }
}