package vmess

import (
	"net/url"
	"strconv"

	"github.com/nadoo/glider/common/log"
)

// VMess .
type VMess struct {
	addr string

	uuid     string
	alterID  int
	security string

	client *Client
}

// NewVMess returns a vmess proxy.
func NewVMess(s string) (*VMess, error) {
	u, err := url.Parse(s)
	if err != nil {
		log.F("parse url err: %s", err)
		return nil, err
	}

	addr := u.Host
	security := u.User.Username()
	uuid, ok := u.User.Password()
	if !ok {
		// no security type specified, vmess://uuid@server
		uuid = security
		security = ""
	}

	query := u.Query()
	aid := query.Get("alterID")
	if aid == "" {
		aid = "0"
	}

	alterID, err := strconv.ParseUint(aid, 10, 32)
	if err != nil {
		log.F("parse alterID err: %s", err)
		return nil, err
	}

	client, err := NewClient(uuid, security, int(alterID))
	if err != nil {
		log.F("create vmess client err: %s", err)
		return nil, err
	}

	p := &VMess{
		addr:     addr,
		uuid:     uuid,
		alterID:  int(alterID),
		security: security,
		client:   client,
	}

	return p, nil
}