Removed unused file

src/utils.go

@@ -1,62 +0,0 @@
-package utils
-
-import (
-	"encoding/json"
-	"errors"
-	"fmt"
-	"io"
-	"net/http"
-	"strings"
-)
-
-type malformedRequest struct {
-	status int
-	msg    string
-}
-
-func (mr *malformedRequest) Error() string {
-	return mr.msg
-}
-
-// ValidateJSONBody validates a JSON request body to a destionation interface
-func ValidateJSONBody(req *http.Request, dst interface{}) error {
-	dec := json.NewDecoder(req.Body)
-	dec.DisallowUnknownFields()
-
-	err := dec.Decode(&dst)
-	if err != nil {
-		var syntaxError *json.SyntaxError
-		var unmarshalTypeError *json.UnmarshalTypeError
-
-		if errors.As(err, &syntaxError) {
-			msg := fmt.Sprintf("Request body contains badly-formed JSON (at position %d)", syntaxError.Offset)
-			return &malformedRequest{status: http.StatusBadRequest, msg: msg}
-		} else if errors.Is(err, io.ErrUnexpectedEOF) {
-			msg := fmt.Sprintf("Request body contains badly-formed JSON")
-			return &malformedRequest{status: http.StatusBadRequest, msg: msg}
-		} else if errors.As(err, &unmarshalTypeError) {
-			msg := fmt.Sprintf("Request body contains an invalid value for the %q field (at position %d)", unmarshalTypeError.Field, unmarshalTypeError.Offset)
-			return &malformedRequest{status: http.StatusBadRequest, msg: msg}
-		} else if strings.HasPrefix(err.Error(), "json: unknown field ") {
-			fieldName := strings.TrimPrefix(err.Error(), "json: unknown field ")
-			msg := fmt.Sprintf("Request body contains unknown field %s", fieldName)
-			return &malformedRequest{status: http.StatusBadRequest, msg: msg}
-		} else if errors.Is(err, io.EOF) {
-			msg := "Request body must not be empty"
-			return &malformedRequest{status: http.StatusBadRequest, msg: msg}
-		} else if err.Error() == "http: request body too large" {
-			msg := "Request body must not be larger than 1MB"
-			return &malformedRequest{status: http.StatusRequestEntityTooLarge, msg: msg}
-		} else {
-			return err
-		}
-	}
-
-	err = dec.Decode(&struct{}{})
-	if err != io.EOF {
-		msg := "Request body must only contain a single JSON object"
-		return &malformedRequest{status: http.StatusBadRequest, msg: msg}
-	}
-
-	return nil
-}