public async Task <GoogleBooks> GetGoogleBookList(string queryText)
{
try
{
Random random = new Random();
int startIndex = random.Next(1, 10);
HttpClient client = new HttpClient();
HttpResponseMessage response = await client.GetAsync(new Uri(googleBaseApi + "volumes?q=" + queryText + "&maxResults=40&startIndex=" + startIndex));
var result = await response.Content.ReadAsStringAsync();
GoogleBooks googleBooks = JsonConvert.DeserializeObject <GoogleBooks>(result);
return(googleBooks);
}
catch (Exception ex)
{
return(null);
}
}
public async Task <GoogleBooks> GetGoogleBookLists(string searchTerm, int startIndex)
{
ObservableCollection <GoogleBooks> BooksList = new ObservableCollection <GoogleBooks>();
try
{
HttpClient client = new HttpClient();
HttpResponseMessage response = await client.GetAsync(new Uri(googleBaseApi + "volumes?q=" + searchTerm + "&maxResults=40&startIndex=" + startIndex));
var result = await response.Content.ReadAsStringAsync();
GoogleBooks googleBooks = JsonConvert.DeserializeObject <GoogleBooks>(result);
return(googleBooks);
}
catch (Exception ex)
{
return(null);
}
}
private async Task <GoogleBooks> LoadGoogleBooks()
{
HttpWebRequest postRequest = (HttpWebRequest)WebRequest.Create(googleBaseApi + "volumes?q=a&maxResults=40&&startIndex=100");
postRequest.Method = "GET";
postRequest.CookieContainer = new CookieContainer();
HttpWebResponse postResponse = (HttpWebResponse)await postRequest.GetResponseAsync();
string response = String.Empty;
if (postResponse != null)
{
Stream postResponseStream = postResponse.GetResponseStream();
StreamReader postStreamReader = new StreamReader(postResponseStream);
response = await postStreamReader.ReadToEndAsync();
}
GoogleBooks booksList = JsonConvert.DeserializeObject <GoogleBooks>(response);
return(booksList);
}
protected async override void OnNavigatedTo(NavigationEventArgs args)
{
var queryText = args.Parameter.ToString().ToLower() as String;
GoogleBooks booksList = await GetGoogleBookList(queryText);
if (booksList != null)
{
List <GroupBookList <object> > BookGroups = new List <GroupBookList <object> >();
ObservableCollection <Items> booksItems = booksList.items;
var query = from book in booksItems
orderby((Items)book).volumeInfo.title
group book by((Items) book).volumeInfo.categories[0] into books
select new { GroupName = books.Key, Items = books };
foreach (var books in query)
{
GroupBookList <object> info = new GroupBookList <object>();
info.Group = books.GroupName;
foreach (var book in books.Items)
{
info.Add(book);
}
BookGroups.Add(info);
}
int countBooks = BookGroups.Count;
var totalItems = 0;
var searchFilters = new List <Filter>();
SearchResult = new Dictionary <string, IEnumerable <Items> >();
if (countBooks > 0)
{
foreach (var groups in BookGroups)
{
IEnumerable <Items> matchItems = booksItems.Where(book => book.volumeInfo.title.ToLower().Contains(queryText) && book.volumeInfo.categories[0] == (string)groups.Group);
int itemsNumber = matchItems.Count <Items>();
totalItems = totalItems + itemsNumber;
}
searchFilters.Add(new Filter("All", totalItems, true));
foreach (var groups in BookGroups)
{
IEnumerable <Items> matchItems = booksItems.Where(book => book.volumeInfo.title.ToLower().Contains(queryText) && book.volumeInfo.categories[0] == (string)groups.Group);
int itemsNumber = matchItems.Count <Items>();
if (itemsNumber > 0)
{
SearchResult.Add(groups.Group.ToString(), matchItems);
searchFilters.Add(new Filter(groups.Group.ToString(), itemsNumber, false));
totalItems = totalItems + itemsNumber;
}
}
}
else
{
VisualStateManager.GoToState(this, "NoResultsFound", true);
}
this.DefaultViewModel["QueryText"] = '\u201c' + queryText + '\u201d';
this.DefaultViewModel["Filters"] = searchFilters;
this.DefaultViewModel["ShowFilters"] = searchFilters.Count > 1;
}
else
{
var popup = new Windows.UI.Popups.MessageDialog("Couldnt fetch books. Plaease check your internet connection.");
popup.Commands.Add(new Windows.UI.Popups.UICommand("Try Again"));
popup.Commands.Add(new Windows.UI.Popups.UICommand("Cancel"));
popup.DefaultCommandIndex = 0;
popup.CancelCommandIndex = 1;
var results = await popup.ShowAsync();
if (results.Label == "Try Again")
{
OnNavigatedTo(args);
}
else
{
this.Frame.GoBack();
}
}
}
protected async override void OnNavigatedTo(NavigationEventArgs args)
{
try
{
Dictionary <string, string> parameter = new Dictionary <string, string>();
parameter = args.Parameter as Dictionary <string, string>;
int index = Convert.ToInt32(parameter["index"]);
string queryText = parameter["query"];
GoogleBooks booksList = await GetGoogleBookLists(queryText, index);
List <GroupBookList <object> > BookGroups = new List <GroupBookList <object> >();
ObservableCollection <Items> booksItems = booksList.items;
var query = from book in booksItems
orderby((Items)book).volumeInfo.title
group book by((Items) book).volumeInfo.categories[0] into books
select new { GroupName = books.Key, Items = books };
foreach (var books in query)
{
GroupBookList <object> info = new GroupBookList <object>();
info.Group = books.GroupName;
foreach (var book in books.Items)
{
info.Add(book);
}
BookGroups.Add(info);
}
if (BookGroups != null)
{
VisualStateManager.GoToState(this, "ResultsFound", true);
groupedGoogleBooks.Source = BookGroups;
}
else
{
ShowProgressRing();
}
}
catch (Exception ex)
{
var popup = new Windows.UI.Popups.MessageDialog("The app couldn't load books. Please check your connection and try again");
popup.Commands.Add(new Windows.UI.Popups.UICommand("Try Again"));
popup.Commands.Add(new Windows.UI.Popups.UICommand("Cancel"));
popup.DefaultCommandIndex = 0;
popup.CancelCommandIndex = 1;
var results = await popup.ShowAsync();
if (results.Label == "Try Again")
{
ShowProgressRing();
OnNavigatedTo(args);
}
else
{
this.Frame.Navigate(typeof(HomePage));
}
}
}
