package errorx

import "fmt"

// CodeError 业务错误
type CodeError struct {
	Code int    `json:"code"`
	Msg  string `json:"msg"`
}

func (e *CodeError) Error() string {
	return fmt.Sprintf("code: %d, msg: %s", e.Code, e.Msg)
}

// NewCodeError 创建业务错误
func NewCodeError(code int, msg string) *CodeError {
	return &CodeError{Code: code, Msg: msg}
}

// NewCodeErrorf 创建业务错误（格式化）
func NewCodeErrorf(code int, format string, args ...interface{}) *CodeError {
	return &CodeError{Code: code, Msg: fmt.Sprintf(format, args...)}
}

// 预定义错误码
const (
	CodeSuccess       = 0
	CodeBadRequest    = 400
	CodeUnauthorized  = 401
	CodeForbidden     = 403
	CodeNotFound      = 404
	CodeServerError   = 500
	CodeUserExists    = 1001
	CodeUserNotFound  = 1002
	CodeWrongPassword = 1003
	CodeInvalidToken  = 1004
)

// 预定义错误
var (
	ErrBadRequest    = NewCodeError(CodeBadRequest, "请求参数错误")
	ErrUnauthorized  = NewCodeError(CodeUnauthorized, "未授权")
	ErrForbidden     = NewCodeError(CodeForbidden, "禁止访问")
	ErrNotFound      = NewCodeError(CodeNotFound, "资源不存在")
	ErrServerError   = NewCodeError(CodeServerError, "服务器内部错误")
	ErrUserExists    = NewCodeError(CodeUserExists, "用户已存在")
	ErrUserNotFound  = NewCodeError(CodeUserNotFound, "用户不存在")
	ErrWrongPassword = NewCodeError(CodeWrongPassword, "密码错误")
	ErrInvalidToken  = NewCodeError(CodeInvalidToken, "无效的Token")
)