package app

import "fmt"

// AppError 应用程序错误类型
type AppError struct {
	Code    int
	Message string
	Cause   error
}

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

// 预定义错误类型
var (
	ErrInitFailed   = &AppError{Code: 1, Message: "初始化失败"}
	ErrParseFailed  = &AppError{Code: 2, Message: "参数解析失败"}
	ErrOutputFailed = &AppError{Code: 3, Message: "输出初始化失败"}
	ErrScanFailed   = &AppError{Code: 4, Message: "扫描执行失败"}
)

// NewAppError 创建新的应用程序错误
func NewAppError(code int, message string, cause error) *AppError {
	return &AppError{
		Code:    code,
		Message: message,
		Cause:   cause,
	}
}

// WrapError 包装错误为应用程序错误
func WrapError(baseErr *AppError, cause error) *AppError {
	return &AppError{
		Code:    baseErr.Code,
		Message: baseErr.Message,
		Cause:   cause,
	}
}