uppdate

backend/utils/errors.go

@@ -0,0 +1,111 @@
+package utils
+
+import (
+	"fmt"
+	"net/http"
+)
+
+type ErrorCode string
+
+const (
+	ErrInternal           ErrorCode = "INTERNAL_ERROR"
+	ErrBadRequest         ErrorCode = "BAD_REQUEST"
+	ErrUnauthorized       ErrorCode = "UNAUTHORIZED"
+	ErrForbidden          ErrorCode = "FORBIDDEN"
+	ErrNotFound           ErrorCode = "NOT_FOUND"
+	ErrConflict           ErrorCode = "CONFLICT"
+	ErrValidation         ErrorCode = "VALIDATION_ERROR"
+	ErrRateLimit          ErrorCode = "RATE_LIMIT_EXCEEDED"
+	ErrServiceUnavailable ErrorCode = "SERVICE_UNAVAILABLE"
+)
+
+type AppError struct {
+	Code       ErrorCode `json:"code"`
+	Message    string    `json:"message"`
+	Details    string    `json:"details,omitempty"`
+	HTTPStatus int       `json:"-"`
+}
+
+func (e *AppError) Error() string {
+	if e.Details != "" {
+		return fmt.Sprintf("%s: %s (%s)", e.Code, e.Message, e.Details)
+	}
+	return fmt.Sprintf("%s: %s", e.Code, e.Message)
+}
+
+func NewAppError(code ErrorCode, message string, httpStatus int) *AppError {
+	return &AppError{
+		Code:       code,
+		Message:    message,
+		HTTPStatus: httpStatus,
+	}
+}
+
+func NewAppErrorWithDetails(code ErrorCode, message string, httpStatus int, details string) *AppError {
+	return &AppError{
+		Code:       code,
+		Message:    message,
+		Details:    details,
+		HTTPStatus: httpStatus,
+	}
+}
+
+func WrapError(err error, code ErrorCode, message string, httpStatus int) *AppError {
+	return &AppError{
+		Code:       code,
+		Message:    message,
+		Details:    err.Error(),
+		HTTPStatus: httpStatus,
+	}
+}
+
+func IsAppError(err error) (*AppError, bool) {
+	if appErr, ok := err.(*AppError); ok {
+		return appErr, true
+	}
+	return nil, false
+}
+
+func BadRequest(message string) *AppError {
+	return NewAppError(ErrBadRequest, message, http.StatusBadRequest)
+}
+
+func BadRequestWithDetails(message, details string) *AppError {
+	return NewAppErrorWithDetails(ErrBadRequest, message, http.StatusBadRequest, details)
+}
+
+func Unauthorized(message string) *AppError {
+	return NewAppError(ErrUnauthorized, message, http.StatusUnauthorized)
+}
+
+func Forbidden(message string) *AppError {
+	return NewAppError(ErrForbidden, message, http.StatusForbidden)
+}
+
+func NotFound(message string) *AppError {
+	return NewAppError(ErrNotFound, message, http.StatusNotFound)
+}
+
+func Conflict(message string) *AppError {
+	return NewAppError(ErrConflict, message, http.StatusConflict)
+}
+
+func ValidationErr(message string) *AppError {
+	return NewAppError(ErrValidation, message, http.StatusBadRequest)
+}
+
+func InternalError(message string) *AppError {
+	return NewAppError(ErrInternal, message, http.StatusInternalServerError)
+}
+
+func InternalErrorWithDetails(message, details string) *AppError {
+	return NewAppErrorWithDetails(ErrInternal, message, http.StatusInternalServerError, details)
+}
+
+func RateLimitExceeded(message string) *AppError {
+	return NewAppError(ErrRateLimit, message, http.StatusTooManyRequests)
+}
+
+func ServiceUnavailable(message string) *AppError {
+	return NewAppError(ErrServiceUnavailable, message, http.StatusServiceUnavailable)
+}