public AddAccountViewModel(ConnectionService connectionService, AccountService accountService, INavigationService navigationService) {
_connectionService = connectionService;
_accountService = accountService;
_navigationService = navigationService;
AnonymousAccess = false;
IsHostValid = false;
CheckHostCommand = new RelayCommand(async () => {
// TODO: check if really changed
IsHostValid = false;
var host = Host;
if (!host.EndsWith("/")) host = host + "/";
_connectionInfo = await _connectionService.GetConnectionInfo(host);
if (_connectionInfo != null) {
var auth = await _connectionService.GetAuthenticationInfo(_connectionInfo);
if (auth != AuthenticationMethod.Unknown)
IsHostValid = true;
AnonymousAccess = auth == AuthenticationMethod.None;
}
});
AddAccountCommand = new RelayCommand(async () => {
var newAccount = new Account {
IsAnonymous = AnonymousAccess,
Protocol = _connectionInfo.WebDAVUrl.Scheme,
ServerDomain = _connectionInfo.WebDAVUrl.Host,
WebDAVPath = _connectionInfo.WebDAVUrl.LocalPath
};
if (!AnonymousAccess) {
newAccount.UsernamePlain = UserName;
newAccount.PasswordPlain = Password;
await _accountService.UpdateCredentials(newAccount);
}
_accountService.AddAccount(newAccount);
await _accountService.SaveAccounts();
if (_navigationService.CanGoBack)
_navigationService.GoBack();
else
_navigationService.Navigate(typeof(MainPage));
}, () => IsHostValid &&
(AnonymousAccess ||
(!string.IsNullOrWhiteSpace(UserName) &&
!string.IsNullOrEmpty(Password))));
}
public async Task<AuthenticationMethod> GetAuthenticationInfo(ConnectionInfo connection) {
var webdav = new WebDAVClient(connection.WebDAVUrl);
var method = AuthenticationMethod.Unknown;
try {
await webdav.GetRootEntries(false);
method = AuthenticationMethod.None;
} catch (WebException webex) {
if (webex != null && webex.Response is HttpWebResponse) {
var webResponse = (HttpWebResponse)webex.Response;
if (webResponse.StatusCode == HttpStatusCode.Unauthorized) {
var authHeader = webResponse.Headers["www-authenticate"].ToLower().Trim();
if (authHeader.StartsWith("basic"))
method = AuthenticationMethod.Basic;
}
}
}
return method;
}
