起售停售套餐

---

需求分析

可以对状态为起售的套餐进行停售操作，可以对状态为停售的套餐进行起售操作

起售的套餐可以展示在用户端，停售的套餐不能展示在用户端

起售套餐时，如果套餐内包含停售的菜品，则不能起售

SetmealController

/**
     * 套餐起售停售
     * @param status
     * @param id
     * @return
*/
@PostMapping("/status/{status}")
@ApiOperation("套餐起售停售")
public Result startOrStop(@PathVariable Integer status, Long id) {
    setmealService.startOrStop(status, id);
    return Result.success();
}

SetmealService

/**
     * 套餐起售、停售
     * @param status
     * @param id
*/
void startOrStop(Integer status, Long id);

SetmealServiceImpl

/**
     * 套餐起售、停售
     * @param status
     * @param id
*/
public void startOrStop(Integer status, Long id) {
    //起售套餐时，判断套餐内是否有停售菜品，有停售菜品提示"套餐内包含未启售菜品，无法启售"
    if(status == StatusConstant.ENABLE){
        //select a.* from dish a left join setmeal_dish b on a.id = b.dish_id where b.setmeal_id = ?
        List<Dish> dishList = dishMapper.getBySetmealId(id);
        if(dishList != null && dishList.size() > 0){
            dishList.forEach(dish -> {
                if(StatusConstant.DISABLE == dish.getStatus()){
                    throw new SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                }
            });
        }
    }

    Setmeal setmeal = Setmeal.builder()
        .id(id)
        .status(status)
        .build();
    setmealMapper.update(setmeal);
}

DishMapper

/**
     * 根据套餐id查询菜品
     * @param setmealId
     * @return
*/
@Select("select a.* from dish a left join setmeal_dish b on a.id = b.dish_id where b.setmeal_id = #{setmealId}")
List<Dish> getBySetmealId(Long setmealId);