package management

import (
	"database/sql"
	"errors"
	"fmt"
)

type AppError struct {
	Status  int
	Code    string
	Message string
	Fields  map[string]any
}

func newAppError(status int, code, message string, fields map[string]any) *AppError {
	return &AppError{Status: status, Code: code, Message: message, Fields: fields}
}

func (e *AppError) Error() string {
	if e == nil {
		return ""
	}
	return fmt.Sprintf("%s: %s", e.Code, e.Message)
}

func asAppError(err error) *AppError {
	if err == nil {
		return nil
	}
	if appErr, ok := err.(*AppError); ok {
		return appErr
	}
	if errors.Is(err, sql.ErrNoRows) {
		return newAppError(404, "RESOURCE_NOT_FOUND", "resource does not exist", nil)
	}
	return newAppError(500, "INTERNAL_ERROR", "internal server error", nil)
}