public async Task <UserView> SigninByGit(GitSignInPara data)
{
UserView user = new UserView();
if (User.Identity.IsAuthenticated)
{
string accountSource = CookieUtil.GetCookie(AccountSource.LoginSource, User);
if (accountSource == AccountSource.Git)
{
//直接返回cookie中的结果，并建立session
user = SignInService.GetGitUser();
}
}
else
{
//没有授权 先获取授权，插入自己的库，再加cookie
user = await SignInService.OauthFromGit(data);
}
return(user);
}