public MediaBrowserViewModel(IMediaLibraryBrowser mediaLibraryBrowser, Settings settings,
LoginFormViewModel loginFormViewModel, IMixViewModelFactory mixViewModelFactory)
{
this.settings = settings;
this.mixViewModelFactory = mixViewModelFactory;
this.mediaLibraryBrowser = mediaLibraryBrowser;
GetRecentlyMadeMixes = new ReactiveAsyncCommand(null, 1);
GetRecentlyMadeMixes.RegisterAsyncFunction(
_ => mediaLibraryBrowser.GetRecentlyMadeMixes(CreateMixFilter(Filter)))
.Subscribe(SetBrowsedMixes);
GetHotMixes = new ReactiveAsyncCommand(null, 1);
GetHotMixes.RegisterAsyncFunction(_ => mediaLibraryBrowser.GetHotMixes(CreateMixFilter(Filter))).Subscribe(
SetBrowsedMixes);
GetPopularMixes = new ReactiveAsyncCommand(null, 1);
GetPopularMixes.RegisterAsyncFunction(_ => mediaLibraryBrowser.GetPopularMixes(CreateMixFilter(Filter)))
.Subscribe(SetBrowsedMixes);
// command is enabled only if the user is logged in
GetLikedMixes = new ReactiveAsyncCommand(loginFormViewModel.UserLoggedInObservable, 1);
GetLikedMixes.RegisterAsyncFunction(_ =>
{
var mixFilter = CreateMixFilter(Filter);
string userSlug = loginFormViewModel.UserData.UserSlug;
return(mediaLibraryBrowser.GetLikedMixes(mixFilter, userSlug));
}).Subscribe(SetBrowsedMixes);
// command is enabled only if the user is logged in
GetFeedMixes = new ReactiveAsyncCommand(loginFormViewModel.UserLoggedInObservable, 1);
GetFeedMixes.RegisterAsyncFunction(_ =>
{
var mixFilter = CreateMixFilter(Filter);
string userSlug = loginFormViewModel.UserData.UserSlug;
return(mediaLibraryBrowser.GetFeedMixes(mixFilter, userSlug));
}).Subscribe(SetBrowsedMixes);
GetRecommendedMixes = new ReactiveAsyncCommand(loginFormViewModel.UserLoggedInObservable, 1);
GetRecommendedMixes.RegisterAsyncFunction(_ =>
{
var mixFilter = CreateMixFilter(Filter);
string userSlug = loginFormViewModel.UserData.UserSlug;
return(mediaLibraryBrowser.GetRecommendedMixes(mixFilter, userSlug));
}).Subscribe(SetBrowsedMixes);
GetHistoryMixes = new ReactiveAsyncCommand(loginFormViewModel.UserLoggedInObservable, 1);
GetHistoryMixes.RegisterAsyncFunction(_ =>
{
var mixFilter = CreateMixFilter(Filter);
string userSlug = loginFormViewModel.UserData.UserSlug;
return(mediaLibraryBrowser.GetHistoryMixes(mixFilter, userSlug));
}).Subscribe(SetBrowsedMixes);
BrowsedMixes = new DispatchedReactiveCollection <MixViewModel>();
ReplaySubject <bool> browsedMixesExistObservable = new ReplaySubject <bool>(1);
BrowsedMixes.CollectionCountChanged.Select(count => count > 0).Subscribe(browsedMixesExistObservable.OnNext);
browsedMixesExistObservable.OnNext(false);
GetMoreMixes = new ReactiveAsyncCommand(browsedMixesExistObservable, 1);
GetMoreMixes.RegisterAsyncFunction(_ => mediaLibraryBrowser.GetMoreMixes())
.Subscribe(AddBrowsedMixes);
// set can execute only if there is something in the list
SetMixDisplayMode = new ReactiveCommand(browsedMixesExistObservable);
SetMixDisplayMode.Subscribe(mode => MixDisplayMode = (MixDisplayMode)mode);
ApplyFilter = new ReactiveCommand();
ApplyFilter.Where(_ => Filter.Length > 0)
.Subscribe(_ =>
{
// if we only started up the application, by search for Hot mixes
if (mediaLibraryBrowser.SessionData.IsEmpty)
{
GetHotMixes.Execute(null);
return;
}
// otherwise, take the same type of mixes as they were before
switch (mediaLibraryBrowser.SessionData.LastMixesRequest.ViewType)
{
case MixesViewType.Hot: GetHotMixes.Execute(null); break;
case MixesViewType.Popular: GetPopularMixes.Execute(null); break;
case MixesViewType.Recent: GetRecentlyMadeMixes.Execute(null); break;
case MixesViewType.Liked: GetLikedMixes.Execute(null); break;
case MixesViewType.Feed: GetFeedMixes.Execute(null); break;
case MixesViewType.Listened: GetHistoryMixes.Execute(null); break;
case MixesViewType.Recommended: GetRecommendedMixes.Execute(null); break;
default:
// throw new ArgumentOutOfRangeException();
break;
}
});
MixDisplayMode mixDisplayMode;
string storedMixDisplayModeString = (string)settings[mixdisplayModeKey];
Enum.TryParse <MixDisplayMode>(storedMixDisplayModeString, out mixDisplayMode);
MixDisplayMode = mixDisplayMode;
MixesViewTypeAsString = String.Empty;
Filter = String.Empty;
MixBrowsingMessage = String.Empty;
}
private void TheApplicationIssuesACommandToGetTheHotMixes()
{
mixesList = mediaLibraryBrowser.GetHotMixes(mixFilter);
}