package errors

import "errors"

// 业务错误定义

var (
	// 参数错误
	ErrInvalidParam = errors.New("参数错误")
	ErrInvalidSymbol = errors.New("无效的标的代码")
	ErrInvalidDate = errors.New("无效的日期格式")
	
	// 数据错误
	ErrSymbolNotFound = errors.New("标的不存在")
	ErrDataNotFound = errors.New("数据不存在")
	ErrDataSourceUnavailable = errors.New("数据源不可用")
	
	// 权限错误
	ErrUnauthorized = errors.New("未授权")
	ErrRateLimit = errors.New("请求过于频繁")
	
	// 系统错误
	ErrInternal = errors.New("服务器内部错误")
)

// ErrorCode 错误码
type ErrorCode int

const (
	CodeOK ErrorCode = 0
	CodeBadRequest ErrorCode = 400
	CodeUnauthorized ErrorCode = 401
	CodeNotFound ErrorCode = 404
	CodeRateLimit ErrorCode = 429
	CodeInternal ErrorCode = 500
)