package cn.exrick.xboot.your.mapper;

import cn.exrick.xboot.your.vo.Month;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import cn.exrick.xboot.your.entity.Customer;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

/**
 * 商户表数据处理层
 * @author zhangzeli
 */
public interface CustomerMapper extends BaseMapper<Customer> {

    @Select("select count(id) from t_customer")
    int count();

    @Select("select \n" +
            "sum(case when month(create_time) < 2 && year(create_time) <= #{year} then 1 else 0 end) as january,\n" +
            "sum(case when month(create_time) < 3 && year(create_time) <= #{year} then 1 else 0 end) as february,\n" +
            "sum(case when month(create_time) < 4 && year(create_time) <= #{year} then 1 else 0 end) as march,\n" +
            "sum(case when month(create_time) < 5 && year(create_time) <= #{year} then 1 else 0 end) as april,\n" +
            "sum(case when month(create_time) < 6 && year(create_time) <= #{year} then 1 else 0 end) as may,\n" +
            "sum(case when month(create_time) < 7 && year(create_time) <= #{year} then 1 else 0 end) as june,\n" +
            "sum(case when month(create_time) < 8 && year(create_time) <= #{year} then 1 else 0 end) as july,\n" +
            "sum(case when month(create_time) < 9 && year(create_time) <= #{year} then 1 else 0 end) as august,\n" +
            "sum(case when month(create_time) < 10 && year(create_time) <= #{year} then 1 else 0 end) as september,\n" +
            "sum(case when month(create_time) < 11 && year(create_time) <= #{year} then 1 else 0 end) as october,\n" +
            "sum(case when month(create_time) < 12 && year(create_time) <= #{year} then 1 else 0 end) as november,\n" +
            "sum(case when month(create_time) < 13 && year(create_time) <= #{year} then 1 else 0 end) as december\n" +
            "from t_customer")
    Month getCustomerCount(@Param("year")Integer year);
}