package weixin

import (
	"errors"
	"fmt"
	"time"

	"git.rosy.net.cn/baseapi/platformapi/weixinsnsapi"
	"git.rosy.net.cn/baseapi/utils"
	"git.rosy.net.cn/jx-callback/business/jxcallback/auth"
	"git.rosy.net.cn/jx-callback/globals"
	"git.rosy.net.cn/jx-callback/globals/api"
)

const (
	LoginType               = "weixinsns"
	DefTempPasswordDuration = 5 * time.Minute // 登录时间限制在5分钟内
)

var (
	ErrLoginFailed  = errors.New("登录失败")
	StrStateIsWrong = "state:%s状态不对"
)

type Auther struct {
}

type UserInfoExt struct {
	weixinsnsapi.UserInfo
	TempPassword string `json:"tempPassword"` // 一段时间有效的登录密码
}

func init() {
	auth.RegisterAuther(LoginType, new(Auther))
}

func GetUserInfo(code string, state string) (token *UserInfoExt, err error) {
	if state == "" {
		wxapi := weixinsnsapi.New(api.WeixinAPI.GetAppID(), api.WeixinAPI.GetSecret())
		token, err2 := wxapi.RefreshToken(code)
		if err = err2; err == nil {
			wxUserinfo, err2 := wxapi.GetUserInfo(token.OpenID)
			if err = err2; err == nil {
				pwd := utils.GetUUID()
				globals.Cacher.Set(wxUserinfo.OpenID, pwd, DefTempPasswordDuration)
				return &UserInfoExt{
					UserInfo:     *wxUserinfo,
					TempPassword: pwd,
				}, nil
			}
		}
	} else {
		err = fmt.Errorf(StrStateIsWrong, state)
	}
	return nil, err
}

func (a *Auther) Login(openid, password string) error {
	if value := globals.Cacher.Get(openid); value != nil {
		if password == value.(string) {
			globals.Cacher.Del(openid)
			return nil
		}
	}
	return ErrLoginFailed
}

func (a *Auther) Logout(openid string) error {
	return globals.Cacher.Del(openid)
}