package db import ( "fmt" "strings" ) func IsBadRequest(err error) bool { return strings.HasPrefix(err.Error(), "bad request:") } func BadRequest(err string) error { return fmt.Errorf("bad request: %s", err) } func BadRequestNotFound(resource, field string, value any) error { errStr := fmt.Sprintf("%s with %s=%v not found", resource, field, value) return BadRequest(errStr) } func BadRequestNotAssociated(parent, child string, parentID, childID any) error { errStr := fmt.Sprintf("%s (ID: %v) not associated with %s (ID: %v)", child, childID, parent, parentID) return BadRequest(errStr) } func BadRequestAssociated(parent, child string, parentID, childID any) error { errStr := fmt.Sprintf("%s (ID: %v) already associated with %s (ID: %v)", child, childID, parent, parentID) return BadRequest(errStr) }