feat: initial commit

internal/http/form/validation.go

@@ -0,0 +1,26 @@
+package form
+
+type ValidationError interface {
+	error
+	Message() string
+}
+
+type validationError struct {
+	message string
+}
+
+// Error implements ValidationError.
+func (v *validationError) Error() string {
+	return "validation error"
+}
+
+// Message implements ValidationError.
+func (v *validationError) Message() string {
+	return v.message
+}
+
+var _ ValidationError = &validationError{}
+
+func NewValidationError(message string) ValidationError {
+	return &validationError{message: message}
+}