package hpds_err

import (
	"fmt"

	quic "github.com/quic-go/quic-go"
)

// HpdsError hpds error
type HpdsError interface {
	error
	// ErrorCode getter method
	ErrorCode() ErrorCode
}

type hpdsError struct {
	errorCode ErrorCode
	err       error
}

// New create hpds error
func New(code ErrorCode, err error) HpdsError {
	return &hpdsError{
		errorCode: code,
		err:       err,
	}
}

func (e *hpdsError) Error() string {
	return fmt.Sprintf("%s error: message=%s", e.errorCode, e.err.Error())
}

// ErrorCode getter method
func (e *hpdsError) ErrorCode() ErrorCode {
	return e.errorCode
}

// ErrorCode error code
type ErrorCode uint64

const (
	// ErrorCodeClientAbort client abort
	ErrorCodeClientAbort ErrorCode = 0xC7
	// ErrorCodeUnknown unknown error
	ErrorCodeUnknown ErrorCode = 0xC0
	// ErrorCodeClosed net closed
	ErrorCodeClosed ErrorCode = 0xC1
	// ErrorCodeBeforeHandler before handler
	ErrorCodeBeforeHandler ErrorCode = 0xC2
	// ErrorCodeMainHandler main handler
	ErrorCodeMainHandler ErrorCode = 0xC3
	// ErrorCodeAfterHandler after handler
	ErrorCodeAfterHandler ErrorCode = 0xC4
	// ErrorCodeHandshake handshake frame
	ErrorCodeHandshake ErrorCode = 0xC5
	// ErrorCodeRejected server rejected
	ErrorCodeRejected ErrorCode = 0xCC
	// ErrorCodeGoaway goaway frame
	ErrorCodeGoaway ErrorCode = 0xCF
	// ErrorCodeData data frame
	ErrorCodeData ErrorCode = 0xCE
	// ErrorCodeUnknownClient unknown client error
	ErrorCodeUnknownClient ErrorCode = 0xCD
	// ErrorCodeDuplicateName unknown client error
	ErrorCodeDuplicateName ErrorCode = 0xC6
	ErrorCodeStartHandler  ErrorCode = 0xC8
)

func (e ErrorCode) String() string {
	switch e {
	case ErrorCodeClientAbort:
		return "ClientAbort"
	case ErrorCodeUnknown:
		return "UnknownError"
	case ErrorCodeClosed:
		return "NetClosed"
	case ErrorCodeBeforeHandler:
		return "BeforeHandler"
	case ErrorCodeMainHandler:
		return "MainHandler"
	case ErrorCodeAfterHandler:
		return "AfterHandler"
	case ErrorCodeHandshake:
		return "Handshake"
	case ErrorCodeRejected:
		return "Rejected"
	case ErrorCodeGoaway:
		return "Goaway"
	case ErrorCodeData:
		return "DataFrame"
	case ErrorCodeUnknownClient:
		return "UnknownClient"
	case ErrorCodeDuplicateName:
		return "DuplicateName"
	case ErrorCodeStartHandler:
		return "StartHandler"
	default:
		return "XXX"
	}
}

// Is parse quic ApplicationErrorCode to hpds ErrorCode
func Is(he quic.ApplicationErrorCode, err ErrorCode) bool {
	return uint64(he) == uint64(err)
}

// Parse parse quic ApplicationErrorCode
func Parse(err quic.ApplicationErrorCode) ErrorCode {
	return ErrorCode(err)
}

// To convert hpds ErrorCode to quic ApplicationErrorCode
func (e ErrorCode) To() quic.ApplicationErrorCode {
	return quic.ApplicationErrorCode(e)
}

// DuplicateNameError duplicate name(sfn)
type DuplicateNameError struct {
	connId string
	err    error
}

// NewDuplicateNameError create a duplicate name error
func NewDuplicateNameError(connId string, err error) DuplicateNameError {
	return DuplicateNameError{
		connId: connId,
		err:    err,
	}
}

// Error raw error
func (e DuplicateNameError) Error() string {
	return e.err.Error()
}

// ErrorCode getter method
func (e DuplicateNameError) ErrorCode() ErrorCode {
	return ErrorCodeDuplicateName
}

// ConnId duplicate connection ID
func (e DuplicateNameError) ConnId() string {
	return e.connId
}