package svc

import (
	"applet/app/e"
	"applet/app/utils"
	"applet/app/utils/logx"
	"encoding/json"
	"fmt"
	"github.com/go-playground/validator/v10"
)

func HandleValidateErr(err error) error {
	switch err.(type) {
	case *json.UnmarshalTypeError:
		return e.NewErr(e.ERR_UNMARSHAL, "参数格式错误")
	case validator.ValidationErrors:
		errs := err.(validator.ValidationErrors)
		transMsgMap := errs.Translate(utils.ValidatorTrans) // utils.ValidatorTrans \app\utils\validator_err_trans.go::ValidatorTransInit初始化获得
		transMsgOne := transMsgMap[GetOneKeyOfMapString(transMsgMap)]
		return e.NewErr(e.ERR_INVALID_ARGS, transMsgOne)
	default:
		_ = logx.Error(err)
		return e.NewErr(e.ERR, fmt.Sprintf("validate request params, err:%v\n", err))
	}
}

// GetOneKeyOfMapString 取出Map的一个key
func GetOneKeyOfMapString(collection map[string]string) string {
	for k := range collection {
		return k
	}
	return ""
}