private IncrementalObservableCollection <T> CreateLastIncrementalCollection <T>(
Func <PageResponse <T> > getPageResponse,
Action <PageResponse <T> > setPageResponse,
Func <int, Task <PageResponse <T> > > searchFunc) where T : new()
{
var collection = new IncrementalObservableCollection <T>
{
HasMoreItemsFunc = () =>
{
var page = getPageResponse();
if (page != null)
{
return(page.Page < page.TotalPages);
}
return(false);
}
};
collection.LoadMoreItemsFunc = count =>
{
Func <Task <LoadMoreItemsResult> > taskFunc = async() =>
{
try
{
IsLoading = true;
var pageResp = getPageResponse();
var resp = await searchFunc(pageResp.Page + 1);
foreach (var item in resp.Content)
{
collection.Add(item);
}
IsLoading = false;
setPageResponse(resp);
return(new LoadMoreItemsResult {
Count = (uint)resp.Content.Count
});
}
catch
{
IsLoading = false;
setPageResponse(null);
CurtainPrompt.ShowError("GenericLoadingMoreError".FromLanguageResource());
return(new LoadMoreItemsResult {
Count = 0
});
}
};
var loadMorePostsTask = taskFunc();
return(loadMorePostsTask.AsAsyncOperation());
};
return(collection);
}
public static IncrementalObservableCollection <WebSong> ToWebSong(this IncrementalObservableCollection <LastTrack> tracks)
{
IncrementalObservableCollection <WebSong> _songs = new IncrementalObservableCollection <WebSong>();
foreach (var track in tracks)
{
_songs.Add(WebSongConverter.CreateSong(track));
}
return(_songs);
}
private IncrementalObservableCollection <T> CreateIncrementalCollection <T>(
Func <PageResponse <T> > getPageResponse, Action <PageResponse <T> > setPageResponse,
Func <int, Task <PageResponse <T> > > searchFunc) where T : new()
{
var collection = new IncrementalObservableCollection <T>
{
HasMoreItemsFunc = () => getPageResponse().Page < getPageResponse().TotalPages
};
collection.LoadMoreItemsFunc = count =>
{
Func <Task <LoadMoreItemsResult> > taskFunc = async() =>
{
try
{
IsLoading = true;
var resp = await searchFunc(getPageResponse().Page + 1);
foreach (var item in resp.Content)
{
collection.Add(item);
}
IsLoading = false;
setPageResponse(resp);
return(new LoadMoreItemsResult
{
Count = (uint)resp.Content.Count
});
}
catch
{
IsLoading = false;
setPageResponse(null);
CurtainToast.ShowError("Problem loading more items.");
return(new LoadMoreItemsResult
{
Count = 0
});
}
};
var loadMorePostsTask = taskFunc();
return(loadMorePostsTask.AsAsyncOperation());
};
return(collection);
}
public IncrementalObservableCollection <Base> CreateLastIncrementalCollection <T>(
string type,
Func <PageResponse <T> > getPageResponse,
Action <PageResponse <T> > setPageResponse,
Func <int, Task <PageResponse <T> > > searchFunc) where T : new()
{
var collection = new IncrementalObservableCollection <Base>
{
HasMoreItemsFunc = () =>
{
var page = getPageResponse();
if (page != null)
{
return(page.Page < page.TotalPages);
}
return(false);
}
};
collection.LoadMoreItemsFunc = count =>
{
Func <Task <LoadMoreItemsResult> > taskFunc = async() =>
{
try
{
if (Windows.System.Profile.AnalyticsInfo.VersionInfo.DeviceFamily == "Windows.Mobile")
{
if (type.Equals("songs") && Tracks != null && Tracks.Count >= 70)
{
IsLoading = false;
setPageResponse(null);
return(new LoadMoreItemsResult {
Count = 0
});
}
if (type.Equals("albums") && Albums != null && Albums.Count >= 20)
{
IsLoading = false;
setPageResponse(null);
return(new LoadMoreItemsResult {
Count = 0
});
}
}
else
{
if (type.Equals("songs") && Tracks != null && Tracks.Count >= 120)
{
IsLoading = false;
setPageResponse(null);
return(new LoadMoreItemsResult {
Count = 0
});
}
if (type.Equals("albums") && Albums != null && Albums.Count >= 40)
{
IsLoading = false;
setPageResponse(null);
return(new LoadMoreItemsResult {
Count = 0
});
}
}
if (type.Equals("artists") && Artists != null && Artists.Count >= 1)
{
IsLoading = false;
setPageResponse(null);
return(new LoadMoreItemsResult {
Count = 0
});
}
IsLoading = true;
var itemsAdded = 0;
var pageResp = getPageResponse();
var resp = await searchFunc(pageResp.Page + 1);
if (resp != null)
{
foreach (var item in resp.Content)
{
if (item is LastAlbum)
{
collection.Add(Data.Model.WebSongConverter.CreateAlbum(item as LastAlbum));
}
else if (item is LastTrack)
{
collection.Add(Data.Model.WebSongConverter.CreateSong(item as LastTrack));
}
}
setPageResponse(resp);
itemsAdded = resp.Content.Count;
}
else
{
setPageResponse(null);
}
IsLoading = false;
return(new LoadMoreItemsResult {
Count = (uint)itemsAdded
});
}
catch
{
IsLoading = false;
setPageResponse(null);
ToastManager.ShowError("Error in loading more results.");
return(new LoadMoreItemsResult {
Count = 0
});
}
};
var loadMorePostsTask = taskFunc();
return(loadMorePostsTask.AsAsyncOperation());
};
return(collection);
}
private IncrementalObservableCollection <Base> CreateIncrementalCollection <T>(
string type,
Func <DeezerPageResponse <T> > getPageResponse,
Action <DeezerPageResponse <T> > setPageResponse,
Func <int, Task <DeezerPageResponse <T> > > searchFunc) where T : new()
{
var collection = new IncrementalObservableCollection <Base>
{
HasMoreItemsFunc = () =>
{
var page = getPageResponse();
if (page != null)
{
return(!string.IsNullOrEmpty(page.next));
}
return(false);
}
};
collection.LoadMoreItemsFunc = count =>
{
Func <Task <LoadMoreItemsResult> > taskFunc = async() =>
{
try
{
if (Windows.System.Profile.AnalyticsInfo.VersionInfo.DeviceFamily == "Windows.Mobile")
{
if (type.Equals("songs") && Tracks != null && Tracks.Count >= 70)
{
IsLoading = false;
setPageResponse(null);
return(new LoadMoreItemsResult {
Count = 0
});
}
if (type.Equals("albums") && Albums != null && Albums.Count >= 20)
{
IsLoading = false;
setPageResponse(null);
return(new LoadMoreItemsResult {
Count = 0
});
}
}
else
{
if (type.Equals("songs") && Tracks != null && Tracks.Count >= 120)
{
IsLoading = false;
setPageResponse(null);
return(new LoadMoreItemsResult {
Count = 0
});
}
if (type.Equals("albums") && Albums != null && Albums.Count >= 40)
{
IsLoading = false;
setPageResponse(null);
return(new LoadMoreItemsResult {
Count = 0
});
}
}
if (type.Equals("artists") && Artists != null && Artists.Count >= 1)
{
IsLoading = false;
setPageResponse(null);
return(new LoadMoreItemsResult {
Count = 0
});
}
IsLoading = true;
var itemsAdded = 0;
var pageResp = getPageResponse();
var next = pageResp.next.Split('?')[1]?.Split('=');
int page = int.Parse(next[next.Length - 1]);
var resp = await searchFunc(page);
if (resp != null)
{
foreach (var item in resp.data)
{
if (item is DeezerAlbum)
{
collection.Add(Data.Model.WebSongConverter.CreateDeezerAlbum(item as DeezerAlbum));
}
else if (item is DeezerSong)
{
collection.Add(Data.Model.WebSongConverter.CreateDeezerSong(item as DeezerSong));
}
}
setPageResponse(resp);
itemsAdded = resp.data.Count;
}
else
{
setPageResponse(null);
}
IsLoading = false;
return(new LoadMoreItemsResult {
Count = (uint)itemsAdded
});
}
catch
{
IsLoading = false;
setPageResponse(null);
ToastManager.ShowError("Error in loading more results.");
return(new LoadMoreItemsResult {
Count = 0
});
}
};
var loadMorePostsTask = taskFunc();
return(loadMorePostsTask.AsAsyncOperation());
};
return(collection);
}
public async Task SearchAsync(string term)
{
if (string.IsNullOrEmpty(term))
{
ToastManager.ShowError("Please enter something.");
return;
}
SetMessage(Core.StringMessage.LoadingPleaseWait);
if (!App.Locator.Network.IsActive)
{
SetMessage(Core.StringMessage.NoInternetConnection);
return;
}
foundInViez = false;
IsLoading = true;
try
{
ClearSearchViewModelData();
var tasks = new List <Task>
{
Task.Run(
async() =>
{
_tracksResponse = await _service.SearchTracksAsync(term, limit: 20);
if (_tracksResponse != null)
{
await DispatcherHelper.RunAsync(
() =>
{
int indexToAdd = -1;
Tracks = CreateLastIncrementalCollection(
"songs",
() => _tracksResponse,
tracks => _tracksResponse = tracks,
async i => await _service.SearchTracksAsync(term, page: i, limit: 20));
foreach (var addedOTrack in _tracksResponse.Content)
{
indexToAdd++;
Tracks.Add(Data.Model.WebSongConverter.CreateSong(addedOTrack));
if (indexToAdd == 2 || indexToAdd == 10 || indexToAdd == 22 || indexToAdd == 34 || indexToAdd == 49 ||
indexToAdd == 63 || indexToAdd == 78 || indexToAdd == 88 || indexToAdd == 99)
{
Tracks.Insert(indexToAdd, new ListAdvert());
}
}
});
}
}),
Task.Run(
async() =>
{
_albumsResponse = await _service.SearchAlbumsAsync(term, limit: 20);
if (_albumsResponse != null)
{
await DispatcherHelper.RunAsync(
() =>
{
int indexToAdd = -1;
Albums = CreateLastIncrementalCollection(
"albums",
() => _albumsResponse,
albums => _albumsResponse = albums,
async i => await _service.SearchAlbumsAsync(term, page: i, limit: 20));
foreach (var addedOAlbum in _albumsResponse?.Content)
{
if (!string.IsNullOrEmpty(addedOAlbum.Mbid) || !string.IsNullOrEmpty(addedOAlbum.Id))
{
indexToAdd++;
Albums.Add(Data.Model.WebSongConverter.CreateAlbum(addedOAlbum));
if (indexToAdd == 2 || indexToAdd == 10 || indexToAdd == 22 || indexToAdd == 34 || indexToAdd == 49 ||
indexToAdd == 63 || indexToAdd == 78 || indexToAdd == 88 || indexToAdd == 99)
{
Albums.Insert(indexToAdd, new Advert());
}
}
}
});
}
}),
Task.Run(
async() =>
{
_artistsResponse = await _service.SearchArtistsAsync(term, limit: 1);
if (_artistsResponse != null && _artistsResponse.Content.Count > 0)
{
await DispatcherHelper.RunAsync(() => Artists = new List <LastArtist>(_artistsResponse.Content));
}
}),
Task.Run(
async() =>
{
try
{
await Task.Factory.StartNew(async() =>
{
await DispatcherHelper.RunAsync(async() =>
{
if (App.Locator.Setting.VideoOnOff)
{
VideoMessage = Core.StringMessage.LoadingPleaseWait;
OnlineVideos = await _misc.GetSearchedVideos(20, term);
if (OnlineVideos != null && OnlineVideos.CountOrDefault() > 0)
{
VideoMessage = Core.StringMessage.NoMessge;
}
else
{
VideoMessage = Core.StringMessage.EmptyMessage;
}
}
else
{
VideoMessage = Core.StringMessage.NoMessge;
}
});
});
}
catch
{
VideoMessage = Core.StringMessage.SomethinWentWrong;
}
})
};
await Task.WhenAll(tasks);
}
catch
{
SetMessage(Core.StringMessage.SomethinWentWrong);
}
if (Tracks == null || Tracks.Count < 1)
{
await FindOnViez(term);
}
else
{
TrackMessage = (Tracks != null && Tracks.Count > 0) ? Core.StringMessage.NoMessge : Core.StringMessage.EmptyMessage;
}
if ((Albums != null && Albums.Count > 0) && (Artists != null && Artists.Count > 0))
{
ArtistHeader = true;
}
else
{
ArtistHeader = false;
}
AlbumArtistMessage = ((Albums != null && Albums.Count > 0) || (Artists != null && Artists.Count > 0)) ? Core.StringMessage.NoMessge : Core.StringMessage.EmptyMessage;
IsLoading = false;
}
private IncrementalObservableCollection <T> CreateIncrementalCollection <T>(
Func <Paging <T> > getPageResponse,
Action <Paging <T> > setPageResponse,
Func <int, Task <Paging <T> > > searchFunc) where T : new()
{
var collection = new IncrementalObservableCollection <T>
{
HasMoreItemsFunc = () =>
{
var page = getPageResponse();
if (page != null)
{
return(!string.IsNullOrEmpty(page.Next));
}
return(false);
}
};
collection.LoadMoreItemsFunc = count =>
{
Func <Task <LoadMoreItemsResult> > taskFunc = async() =>
{
try
{
IsLoading = true;
var itemsAdded = 0;
var pageResp = getPageResponse();
var resp = await searchFunc(pageResp.Offset + pageResp.Limit);
if (resp != null)
{
foreach (var item in resp.Items)
{
collection.Add(item);
}
setPageResponse(resp);
itemsAdded = resp.Items.Count;
}
else
{
setPageResponse(null);
}
IsLoading = false;
return(new LoadMoreItemsResult {
Count = (uint)itemsAdded
});
}
catch
{
IsLoading = false;
setPageResponse(null);
CurtainPrompt.ShowError("GenericLoadingMoreError".FromLanguageResource());
return(new LoadMoreItemsResult {
Count = 0
});
}
};
var loadMorePostsTask = taskFunc();
return(loadMorePostsTask.AsAsyncOperation());
};
return(collection);
}
public static IDisposable ConnectTo <T, TU, TV>(IncrementalObservableCollection <T> collection,
TU connectTarget,
Expression <Func <TU, ObservableCollection <TV> > > expr,
Func <TV, T> converter)
where T : class
where TU : class, ISupportIncrementalLoading
{
collection.SupportIncrementalLoading = connectTarget;
var obsCollection = expr.Compile().Invoke(connectTarget);
var disposable = new CompositeDisposable
{
obsCollection.ObserveAddChanged().ObserveOnUIDispatcher().Subscribe(w => collection.Add(converter(w))),
obsCollection.ObserveRemoveChanged().Subscribe(w => collection.Remove(converter(w))),
obsCollection.ObserveResetChanged().Subscribe(w => collection.Clear())
};
return(disposable);
}
