# 第一个存储过程
# 根据用户 id 查询用户其他信息
# 方法看着很奇葩，但是展示了多个输出参数
DROP PROCEDURE IF EXISTS `select_user_by_id`;
DELIMITER ;;
CREATE PROCEDURE `select_user_by_id`(
IN userId BIGINT,
OUT userName VARCHAR(50),
OUT userPassword VARCHAR(50),
OUT userEmail VARCHAR(50),
OUT userInfo TEXT,
OUT headImg BLOB,
OUT createTime DATETIME)
BEGIN
# 根据用户 id 查询其他数据
select user_name,user_password,user_email,user_info,head_img,create_time
INTO userName,userPassword,userEmail,userInfo,headImg,createTime 
from sys_user
WHERE id = userId;
END
;;
DELIMITER ;

# 第二个存储过程
# 简单的根据用户名和分页参数进行查询，返回总数和分页数据
DROP PROCEDURE IF EXISTS `select_user_page`;
DELIMITER ;;
CREATE PROCEDURE `select_user_page`(
IN userName VARCHAR(50), 
IN _offset BIGINT, 
IN _limit BIGINT, 
OUT total BIGINT)
BEGIN
# 查询数据总数
select count(*) INTO total 
from sys_user 
where user_name like concat('%', userName, '%');
# 分页查询数据
select * 
from sys_user 
where user_name like concat('%', userName, '%')
limit _offset, _limit;
END
;;
DELIMITER ;

# 第三个存储过程
# 保存用户信息和角色关联信息
DROP PROCEDURE IF EXISTS `insert_user_and_roles`;
DELIMITER ;;
CREATE PROCEDURE `insert_user_and_roles`(
OUT userId BIGINT,
IN userName VARCHAR(50),
IN userPassword VARCHAR(50),
IN userEmail VARCHAR(50),
IN userInfo TEXT,
IN headImg BLOB,
OUT createTime DATETIME,
IN roleIds VARCHAR(200)
)

BEGIN
# 设置当前时间
SET createTime = NOW();
# 插入数据
INSERT INTO sys_user(user_name, user_password, user_email, user_info, head_img, create_time)
VALUES (userName, userPassword, userEmail, userInfo, headImg, createTime);
# 获取自增主键
SELECT LAST_INSERT_ID() INTO userId;
# 保存用户和角色关系数据
SET roleIds = CONCAT(',',roleIds,',');
INSERT INTO sys_user_role(user_id, role_id)
select userId, id from sys_role
where INSTR(roleIds, CONCAT(',',id,',')) > 0;
END
;;
DELIMITER ;

# 第四个存储过程
# 删除用户信息和角色关联信息
DROP PROCEDURE IF EXISTS `delete_user_by_id`;
DELIMITER ;;
CREATE PROCEDURE `delete_user_by_id`(IN userId BIGINT)
BEGIN
DELETE FROM sys_user_role where user_id = userId;
DELETE FROM sys_user where id = userId;
END
;;
DELIMITER ;