🎉first commit

custom_errors/errors.go

@@ -0,0 +1,114 @@
+package customerrors
+
+import (
+	"errors"
+	"fmt"
+
+	"github.com/go-playground/validator/v10"
+)
+
+var (
+	ErrInvalidJSON = errors.New("invalid JSON file")
+	ErrInvalidFile = errors.New("invalid file")
+)
+
+func As(err error, target any) bool {
+	return errors.As(err, target)
+}
+
+func Is(err, target error) bool {
+	return errors.Is(err, target)
+}
+
+type Error interface {
+	Error() string
+	Unwrap() error
+}
+
+type TypeError struct {
+	Expected string
+	Received string
+	Field    string
+	err      error
+}
+
+func NewTypeError(expected, received, field string, err error) *TypeError {
+	return &TypeError{
+		Expected: expected,
+		Received: received,
+		Field:    field,
+		err:      err,
+	}
+}
+
+func (e *TypeError) Error() string {
+	return "Expected " + e.Expected + " but received " + e.Received + " in field " + e.Field
+}
+
+func (e *TypeError) Unwrap() error {
+	return e.err
+}
+
+type InvalidFileError struct {
+	FileName string
+	err      error
+}
+
+func NewInvalidFileError(fileName string, err error) *InvalidFileError {
+	return &InvalidFileError{
+		FileName: fileName,
+		err:      err,
+	}
+}
+
+func (e *InvalidFileError) Error() string {
+	return "Invalid file: " + e.FileName
+}
+
+func (e *InvalidFileError) Unwrap() error {
+	return e.err
+}
+
+type FileNotFoundError struct {
+	FileName string
+	err      error
+}
+
+func NewFileNotFoundError(fileName string, err error) *FileNotFoundError {
+	return &FileNotFoundError{
+		FileName: fileName,
+		err:      err,
+	}
+}
+
+func (e *FileNotFoundError) Error() string {
+	return "File not found: " + e.FileName
+}
+
+func (e *FileNotFoundError) Unwrap() error {
+	return e.err
+}
+
+type ValidationErrors struct {
+	MapErrors map[string]string
+	errors    validator.ValidationErrors
+}
+
+func NewValidationErrors(errsMap map[string]string, errs validator.ValidationErrors) *ValidationErrors {
+	return &ValidationErrors{
+		MapErrors: errsMap,
+		errors:    errs,
+	}
+}
+
+func (errs *ValidationErrors) Error() string {
+	var errorsStr string
+	for k, v := range errs.MapErrors {
+		errorsStr += fmt.Sprintf("[%s]: %s\n", k, v)
+	}
+	return errorsStr
+}
+
+func (errs *ValidationErrors) Unwrap() error {
+	return errs.errors
+}