wip

mangezmieux-backend/internal/validator/validator.go

@@ -0,0 +1,56 @@
+package validator
+
+import (
+	"context"
+	"reflect"
+	"strings"
+
+	validatorLib "github.com/go-playground/validator/v10"
+)
+
+var CustomValidators = map[string]customValidator{
+	"enum": {
+		Message:   "This field should be in: %v",
+		Validator: validateEnum,
+	},
+	"required": {
+		Message: "This field is required and cannot be empty",
+	},
+}
+
+type customValidator struct {
+	Message   string
+	Validator validatorLib.FuncCtx
+}
+
+func validateEnum(ctx context.Context, fl validatorLib.FieldLevel) bool {
+	for _, v := range strings.Split(fl.Param(), " ") {
+		if v == fl.Field().String() {
+			return true
+		}
+	}
+	return false
+}
+
+func newValidator() *validatorLib.Validate {
+	va := validatorLib.New()
+
+	va.RegisterTagNameFunc(func(fld reflect.StructField) string {
+		name := strings.SplitN(fld.Tag.Get("json"), ",", 2)
+		if len(name) < 1 {
+			return ""
+		}
+		return name[0]
+	})
+
+	for k, v := range CustomValidators {
+		if v.Validator != nil {
+			err := va.RegisterValidationCtx(k, v.Validator)
+			if err != nil {
+				return nil
+			}
+		}
+	}
+
+	return va
+}