public override async Task <string> Authorize(string userName, string password, string path)
{
if (string.IsNullOrEmpty(userName))
{
throw new ArgumentNullException("userName");
}
if (string.IsNullOrEmpty(password))
{
throw new ArgumentNullException("password");
}
var postParams = CreatePostParams(userName, password);
var taskComplete = new TaskCompletionSource <string>();
try
{
var response = await _webClient.DoPostAsync(path, postParams);
var stream = await response.Content.ReadAsStreamAsync();
var xmlSerializer = new XmlSerializer(typeof(LitresAuthorizationDto));
var authorizationDto = (LitresAuthorizationDto)xmlSerializer.Deserialize(stream);
taskComplete.SetResult(authorizationDto.Token);
}
catch (InvalidOperationException exp)
{
if (exp is WebException)
{
taskComplete.SetException(exp);
}
else
{
taskComplete.SetResult(null);
}
}
return(await taskComplete.Task);
}
public async Task <string> BuyBook(CatalogBookItemModel book, string authorizationString)
{
if (string.IsNullOrEmpty(authorizationString))
{
throw new CatalogAuthorizationException(CatalogType.Litres, AUTHORIZATION_URL);
}
try
{
var art = string.Empty;
var uuid = string.Empty;
if (book.Id.Contains("|"))
{
var idParts = book.Id.Split('|');
art = idParts[0];
uuid = idParts[1];
}
else
{
art = book.Id;
}
var response = await _webClient.DoPostAsync(BUY_BOOK_URL, CreateAcquisitionParams(art, uuid, EncryptService.Decrypt(authorizationString)));
if (response.StatusCode == HttpStatusCode.NotFound)
{
throw new ReadCatalogException("Unable to read catalog");
}
var responseStream = await response.Content.ReadAsStreamAsync();
var xDoc = XDocument.Load(responseStream);
if (xDoc.Root.Name == "catalit-purchase-ok")
{
var format = string.Format("sid={0}&art={1}", EncryptService.Decrypt(authorizationString), art);
if (!string.IsNullOrEmpty(uuid))
{
format = string.Concat(format, string.Format("uuid={0}", uuid));
}
return(string.Concat(DOWNLOAD_BOOK_URL, format));
}
if (xDoc.Root.Name == "catalit-purchase-failed")
{
if (xDoc.Root.Attribute("error").Value == "1")
{
throw new CatalogNotEnoughMoneyException(CatalogType.Litres, string.Concat(NOT_ENOUGH_MONEY_URL, string.Format("?sid={0}", EncryptService.Decrypt(authorizationString))));
}
if (xDoc.Root.Attribute("error").Value == "3")
{
//throw new CatalogBookAlreadyBoughtException(CatalogType.Litres, book.Id);
var format = string.Format("sid={0}&art={1}", EncryptService.Decrypt(authorizationString), art);
if (!string.IsNullOrEmpty(uuid))
{
format = string.Concat(format, string.Format("uuid={0}", uuid));
}
return(string.Concat(DOWNLOAD_BOOK_URL, format));
}
}
if (xDoc.Root.Name == "catalit-authorization-failed")
{
throw new CatalogAuthorizationException(CatalogType.Litres, AUTHORIZATION_URL);
}
}
catch (WebException)
{
throw new ReadCatalogException("Unable to read catalog");
}
throw new ReadCatalogException("Unable to read catalog");
}
