Library/models/error.go

54 lines
1.3 KiB
Go

package models
import "fmt"
// =====================
// User Operation Errors
// =====================
// ErrUsernameExists represents a "UsernameAlreadyExists" kind of error.
type ErrUsernameExists struct {
UserID int64
Username string
}
// IsErrUsernameExists checks if an error is a ErrUsernameExists.
func IsErrUsernameExists(err error) bool {
_, ok := err.(ErrUsernameExists)
return ok
}
func (err ErrUsernameExists) Error() string {
return fmt.Sprintf("a user with this username does already exist [user id: %d, username: %s]", err.UserID, err.Username)
}
// ErrNoUsername represents a "UsernameAlreadyExists" kind of error.
type ErrNoUsername struct {
UserID int64
}
// IsErrNoUsername checks if an error is a ErrUsernameExists.
func IsErrNoUsername(err error) bool {
_, ok := err.(ErrNoUsername)
return ok
}
func (err ErrNoUsername) Error() string {
return fmt.Sprintf("you need to specify a username [user id: %d]", err.UserID)
}
// ErrUserDoesNotExist represents a "UsernameAlreadyExists" kind of error.
type ErrUserDoesNotExist struct {
UserID int64
}
// IsErrUserDoesNotExist checks if an error is a ErrUsernameExists.
func IsErrUserDoesNotExist(err error) bool {
_, ok := err.(ErrUserDoesNotExist)
return ok
}
func (err ErrUserDoesNotExist) Error() string {
return fmt.Sprintf("this user does not exist [user id: %d]", err.UserID)
}