public static bool ShouldRefresh(this TokenInfoDTO token)
{
if (DateTime.Now.Ticks - token.StoredDate >= token.expiresIn.Ticks - token.StoredDate)
{
return(true);
}
return(false);
}
public async Task <TokenInfoDTO> CheckApiCredentialsAsync(string user, string pass)
{
Uri uri = new Uri(string.Format(App.ApiUrl + App.ApiAppName + "/Users/authenticate", string.Empty));
string json = JsonConvert.SerializeObject(new UserDTO {
username = user, password = pass
});
StringContent content = new StringContent(json, Encoding.UTF8, "application/json");
HttpRequestMessage httpRequest = new HttpRequestMessage(HttpMethod.Post, uri);
httpRequest.Content = content;
IEnumerable <string> cookieStrings = null;
var response = await _client.SendAsync(httpRequest);
response.Headers.TryGetValues("refreshToken", out cookieStrings);
IEnumerable <Cookie> responseCookies = _cookies.GetCookies(uri).Cast <Cookie>();
foreach (Cookie cookie in responseCookies)
{
_cookies.Add(uri, cookie);
}
if (response.IsSuccessStatusCode)
{
var result = response.Content.ReadAsStringAsync().Result;
TokenInfoDTO userInfoDTO = JsonConvert.DeserializeObject <TokenInfoDTO>(result);
if (!string.IsNullOrEmpty(userInfoDTO.jwtToken))
{
//questa scadenza vale solo per il token di refresh
string decodeRefreshToken = HttpUtility.UrlDecode(responseCookies.Select(c => c.Value).FirstOrDefault());
userInfoDTO.refreshToken = decodeRefreshToken;
userInfoDTO.ExpiresRefreshToken = responseCookies.Select(c => c.Expires.Ticks).FirstOrDefault();
userInfoDTO.StoredDate = DateTime.Now.Ticks;
App.Token = userInfoDTO;
return(userInfoDTO);
}
}
else if (response.StatusCode == HttpStatusCode.BadRequest)
{
MessagingCenter.Send <string, string>(MessagingCenterEvents.Subscriber, MessagingCenterEvents.AlertError, Messages.Login.ApiUserNotFound);
}
else
{
MessagingCenter.Send <string, string>(MessagingCenterEvents.Subscriber, MessagingCenterEvents.AlertError, Messages.Login.UnknownApiCredentialsCheck);
}
return(null);
}
public async Task RefreshTokenAsync(int userId)
{
Uri uri = new Uri(string.Format(App.ApiUrl + App.ApiAppName + "/Users/refresh-token", string.Empty));
string json = string.Empty;
try
{
if (userId > 0)
{
json = JsonConvert.SerializeObject(userId);
}
StringContent content = new StringContent(json, Encoding.UTF8, "application/json");
HttpRequestMessage httpRequest = new HttpRequestMessage(HttpMethod.Post, uri);
httpRequest.Content = content;
_handler.CookieContainer.Add(new Cookie("refreshToken", App.Token.refreshToken, "/", uri.Host));
var response = await _client.SendAsync(httpRequest);
if (response.IsSuccessStatusCode)
{
var result = response.Content.ReadAsStringAsync().Result;
IEnumerable <Cookie> responseCookies = _cookies.GetCookies(uri).Cast <Cookie>();
TokenInfoDTO refreshTokenDTO = JsonConvert.DeserializeObject <TokenInfoDTO>(result);
if (!string.IsNullOrEmpty(refreshTokenDTO.jwtToken))
{
string decodeRefreshToken = HttpUtility.UrlDecode(responseCookies.Select(c => c.Value).FirstOrDefault());
refreshTokenDTO.refreshToken = decodeRefreshToken;
refreshTokenDTO.ExpiresRefreshToken = responseCookies.Select(c => c.Expires.Ticks).FirstOrDefault();
//refreshTokenDTO.expiresIn = new DateTime(refreshTokenDTO.ExpiresRefreshToken);
refreshTokenDTO.StoredDate = DateTime.Now.Ticks;
App.Token.jwtToken = refreshTokenDTO.jwtToken;
App.Token = refreshTokenDTO;
await App.Current.SavePropertiesAsync();
}
}
}
catch (Exception ecc)
{
Console.WriteLine(ecc.Message);
}
}
public async Task Login()
{
stopwatch.Reset();
try
{
IsBusy = true;
if (HasInternetConnection)
{
if (string.IsNullOrEmpty(UserName) || string.IsNullOrEmpty(Password))
{
MessagingCenter.Send <string, string>(MessagingCenterEvents.Subscriber, MessagingCenterEvents.AlertError, Messages.Login.InvalidCredentials);
IsBusy = false;
return;
}
if (!string.IsNullOrEmpty(UserName) && !string.IsNullOrEmpty(Password))
{
stopwatch.Start();
_userToken = await _apiService.CheckApiCredentialsAsync(UserName, Password);
stopwatch.Stop();
if (_userToken != null)
{
// qua andró a stampare un popup in caso di lavorazione rimaste pendenti.
await FinishLoginProcess();
}
else
{
IsBusy = false;
return;
}
}
}
else
{
MessagingCenter.Send <string, string>(MessagingCenterEvents.Subscriber, MessagingCenterEvents.AlertError, Messages.NoInternetConnection);
}
IsBusy = false;
}
catch (Exception ecc)
{
Log.Error("AppOfficina", ecc.Message);
IsBusy = false;
}
}