package errors

import (
	"fmt"

	"github.com/vektah/gqlparser/v2/gqlerror"
)

type ErrorCode string

// Creates a new GraphQL error with a standard error code.
func New(code ErrorCode, message string) *gqlerror.Error {
	return &gqlerror.Error{
		Message:    message,
		Extensions: map[string]any{"code": code},
	}
}

// Creates a new GraphQL error with a standard error code.
func Errorf(code ErrorCode, format string, a ...any) *gqlerror.Error {
	return &gqlerror.Error{
		Message:    fmt.Sprintf(format, a...),
		Extensions: map[string]any{"code": code},
	}
}

// Sets the field name that caused the error
func Field(err *gqlerror.Error, field string) *gqlerror.Error {
	err.Extensions["field"] = field
	return err
}

// Error codes as string constants
var (
	AccessDenied  ErrorCode = "ERR_ACCESS_DENIED"
	NotFound      ErrorCode = "ERR_NOT_FOUND"
	Unsupported   ErrorCode = "ERR_UNSUPPORTED"
	Unauthorized  ErrorCode = "ERR_UNAUTHORIZED"
	InternalError ErrorCode = "ERR_INTERNAL"
)

// Error codes as Go errors
var (
	ErrAccessDenied  = New(AccessDenied, "Access denied")
	ErrNotFound      = New(NotFound, "Resource not found")
	ErrUnsupported   = New(Unsupported, "Not supported")
	ErrUnauthorized  = New(Unauthorized, "Unauthorized")
	ErrInternalError = New(InternalError, "Internal server error")
)