package rtsp

import "errors"

// const errors
var (
	ErrorInterleavedFrameHeaderTooShort = errors.New("interleave frame too short")
	ErrorInterleavedMagicNumberWrong    = errors.New("interleaved magic number wrong")
	ErrorClientAlreadyStopped           = errors.New("RTSP client already stopped")
	ErrorTimeout                        = errors.New("Timeout")
	ErrorUserinfoNeed                   = errors.New("Need user info to login")
	ErrorRTPTooShort                    = errors.New("RTP packet is too short")
	ErrorDropFrame                      = errors.New("drop frame due to full queue")
	ErrorNotImplement                   = errors.New("not implement")
	ErrorQueueFull                      = errors.New("drop data due to queue full")
)

// StatusError for response
type StatusError struct {
	statusCode int
	body       string
}

// NewStatusError of RTSP
func NewStatusError(statusCode int, body string) error {
	return &StatusError{
		statusCode: statusCode,
		body:       body,
	}
}

func (se StatusError) Error() string {
	if len(se.body) > 0 {
		return se.body
	}
	if statusText, ok := statusText[se.statusCode]; ok {
		return statusText
	}
	return "Unknown"
}

type badStringError struct {
	Msg  string
	Line string
}

func (e *badStringError) Error() string {
	return e.Msg + " " + e.Line
}

type missingError struct {
	Part string
}

func (e *missingError) Error() string {
	return "Missing " + e.Part
}