/// <summary>
/// Creates URL used to receive book details.
/// </summary>
/// <param name="identifierKind">kind of identifier</param>
/// <param name="identifierValue">value of identifier</param>
/// <returns>URL used to receive book details</returns>
private string CreateBookURL(BookIdentifier identifierKind, string identifierValue)
{
return string.Format("http://{0}/api/books?{1}={2}",
ServerAddress,
BookIdentifierToStringDictionary[identifierKind],
identifierValue);
}
/// <summary>
/// Sends request to receive book according its identifier.
/// </summary>
/// <param name="identifierKind">kind of identifier</param>
/// <param name="identifierValue">value of identifier</param>
/// <returns>book with specified identifier</returns>
public async Task<Book> GetBookBy(BookIdentifier identifierKind, string identifierValue)
{
if (identifierValue == null)
throw new ArgumentNullException("identifierValue");
if (string.IsNullOrWhiteSpace(identifierValue))
throw new ArgumentException("identifierValue");
if (!BookIdentifierToStringDictionary.ContainsKey(identifierKind))
throw new ArgumentException("identifierKind");
string url = CreateBookURL(identifierKind, identifierValue);
var book = await RequestManager.DownloadDataAsync<Book>(url);
return book;
}
