package middleware

import (
	"fmt"
	"reflect"

	"github.com/gin-gonic/gin"
	"github.com/gin-gonic/gin/binding"

	"service/api/base"
	"service/library/validator"
)

func JSONParamValidator(p interface{}) gin.HandlerFunc {
	return func(ctx *gin.Context) {
		v := reflect.New(reflect.TypeOf(p))
		err := ctx.ShouldBindBodyWith(v.Interface(), binding.JSON)
		if !base.CheckBadRequest(ctx, err) {
			return
		}

		//非空校验
		if notNullItem, ok := v.Interface().(validator.NotNullItem); ok {
			err := validator.GetDefaultNotNullValidator().Validate(notNullItem)
			if err != nil {
				base.CheckBadRequest(ctx, fmt.Errorf("非空校验失败: %v", err))
			}
		}

		ctx.Set("client_req", v.Interface())
		ctx.Next()
	}
}