package nixmsg

import "fmt"

// APIError 是带协议错误码的错误。
type APIError struct {
	Code    string
	Message string
}

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

func apiErr(code, msg string) *APIError {
	return &APIError{Code: code, Message: msg}
}

// 常用错误码（与 DEVELOPMENT 第 6.10 节一致）。
const (
	CodeBodyTooLarge   = "body_too_large"
	CodeFrameTooLarge  = "frame_too_large"
	CodeMetaTooLarge   = "meta_too_large"
	CodeRateLimited    = "rate_limited"
	CodeBadRequest     = "bad_request"
	CodeNotReady       = "not_ready"
	CodeBusy           = "busy"
	CodeSessionInvalid = "session_invalid"
	CodeBadCredentials = "bad_credentials"
	CodeQueueFull      = "queue_full"
	CodeNotConnected   = "not_connected"
	CodeClosed         = "closed"
	CodeAuthFailed     = "auth_failed"
	CodeKicked         = "kicked"
	CodeTakenOver      = "taken_over"
	CodeDisabled       = "disabled"
	CodeDeleted        = "deleted"
	CodePasswordReset  = "password_reset"
	CodeResultUnknown  = "result_unknown"
	CodeLoggedOut      = "logged_out"
)

// AuthReason 是认证失败 / 顶号原因。
type AuthReason string

const (
	AuthSessionInvalid AuthReason = "session_invalid"
	AuthBadCredentials AuthReason = "bad_credentials"
	AuthTakenOver      AuthReason = "taken_over"
	AuthDisabled       AuthReason = "disabled"
	AuthDeleted        AuthReason = "deleted"
	AuthPasswordReset  AuthReason = "password_reset"
	AuthRateLimited    AuthReason = "rate_limited"
)