/// <summary>
/// Checks whether this album has a specific artist.
/// </summary>
/// <param name="artist">Artist to be checked. Can be null.</param>
/// <returns>True if the artist has this album or artist was null. Otherwise false.</returns>
public virtual bool HasArtist(Artist artist)
{
if (artist == null)
{
return(false);
}
return(Artists.Any(a => artist.Equals(a.Artist)));
}
public override void OnNavigatedTo(NavigatedToEventArgs e, Dictionary <string, object> viewModelState)
{
if (viewModelState.Count == 0)
{
if (e.Parameter != null)
{
var parameter = JsonConvert.DeserializeObject <SearchNavigationParameter>(e.Parameter.ToString());
Query = parameter.Query;
}
Artists = new PaginatedCollection <LastArtist>(LoadMoreArtists);
Artists.HasMoreItems = false;
Artists.ContentState = ContentState.NoData;
if (!String.IsNullOrWhiteSpace(Query))
{
Search();
}
else
{
HideCommandBar();
}
}
else
{
Query = (string)viewModelState[nameof(Query)];
_currentQuery = (string)viewModelState[nameof(_currentQuery)];
Artists = JsonConvert.DeserializeObject <PaginatedCollection <LastArtist> >(
viewModelState[nameof(Artists)].ToString(), _lastImageSetConverter);
Artists.LoadMoreItems = LoadMoreArtists;
Artists.Page = (uint)viewModelState[nameof(Artists) + "PageOffset"];
Artists.ContentState = (ContentState)(int)viewModelState[nameof(Artists) + "State"];
if (Artists.ContentState == ContentState.NoData)
{
Artists.HasMoreItems = false;
}
if (!Artists.Any() && String.IsNullOrEmpty(Query))
{
HideCommandBar();
}
else
{
SetDefaultMode();
}
}
base.OnNavigatedTo(e, viewModelState);
}
private async Task LoadFromDatabase()
{
await App.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
Artists.Clear();
Tracks.Clear();
});
await MusicLibraryManagement.LoadFromSQL();
await DispatchHelper.InvokeAsync(() =>
{
IsMusicLibraryEmpty = !Artists.Any();
OnPropertyChanged("IsMusicLibraryEmpty");
});
}
public Subject First()
{
if (People.Any())
{
return(People.First());
}
if (Artists.Any())
{
return(Artists.First());
}
if (Songs.Any())
{
return(Songs.First());
}
return(null);
}
private async Task <IEnumerable <LastArtist> > LoadMoreArtists(uint page)
{
var response = await _lastfmClient.Artist.SearchAsync(_currentQuery, (int)(page + 1), 50);
if (response.Success)
{
if (!Artists.Any())
{
SetDefaultMode();
}
return(response);
}
else
{
throw new Exception();
}
}
public async Task GetMusicFromLibrary()
{
await LoadFromDatabase();
await App.Dispatcher.RunAsync(CoreDispatcherPriority.Low, () => IsMusicLibraryEmpty = false);
if (!Artists.Any())
{
await StartIndexing();
return;
}
await App.Dispatcher.RunAsync(CoreDispatcherPriority.Low, () =>
{
LoadingState = LoadingState.Loaded;
IsLoaded = true;
IsBusy = false;
Locator.MainVM.InformationText = "";
});
MusicCollectionLoaded.SetResult(true);
await PerformRoutineCheckIfNotBusy();
}
/// <summary>
/// Checks whether this song has a specific artist.
/// </summary>
/// <param name="artistLink">Artist to be checked. Cannot be null.</param>
/// <returns>True if the artist has this album. Otherwise false.</returns>
public virtual bool HasArtistLink(ArtistForSong artistLink)
{
ParamIs.NotNull(() => artistLink);
return(Artists.Any(a => a.ArtistLinkEquals(artistLink)));
}
/// <summary>
/// Checks whether this album has a specific artist.
/// </summary>
/// <param name="artistForAlbum">Artist to be checked. Cannot be null.</param>
/// <returns>True if the artist has this album. Otherwise false.</returns>
public virtual bool HasArtistForAlbum(ArtistForAlbum artistForAlbum)
{
ParamIs.NotNull(() => artistForAlbum);
return(Artists.Any(a => a.ArtistLinkEquals(artistForAlbum)));
}
public ViewModel()
{
DALService = new DALService();
loginCommand = new DelegateCommand(Login);
registrationCommand = new DelegateCommand(Registration);
loginRegistrationShowCommand = new DelegateCommand(ShowLoginRegistrationForm, () => !Accounts.Any(a => a.Login == currentAccount.Login && a.Password == currentAccount.Password));
exitCommand = new DelegateCommand(Exit, () => Accounts.Any(a => a.Login == currentAccount.Login && a.Password == currentAccount.Password));
addArtistCommand = new DelegateCommand(AddArtist, () => CurrentAccount.IsClient == false &&
Artist.Name != "" &&
!Artists.Any(a => a.Name == Artist.Name));
addGenreCommand = new DelegateCommand(AddGenre, () => Accounts.Contains(currentAccount) &&
CurrentAccount.IsClient == false);
addPublisherCommand = new DelegateCommand(AddPublisher, () => Accounts.Contains(currentAccount) && CurrentAccount.IsClient == false);
addRecordCommand = new DelegateCommand(AddRecord);
editRecordCommand = new DelegateCommand(EditRecord, () => CurrentAccount.IsClient == false &&
SelectedRecord != null);
removeRecordCommand = new DelegateCommand(RemoveRecord, () => SelectedRecord != null &&
CurrentAccount.IsClient == false);
discardRecordCommand = new DelegateCommand(DiscardRecord, () => Accounts.Contains(currentAccount) && CurrentAccount.IsClient == false && SelectedRecord != null);
sellRecordCommand = new DelegateCommand(Sell, () =>
CurrentAccount.IsClient == false &&
SelectedRecord != null && SelectedRecord.Name != "" &&
Date.Date == DateTime.Now.Date && Total > 0);
setAsideCommand = new DelegateCommand(SetAside, () => Accounts.Contains(currentAccount) &&
CurrentAccount.IsClient == false &&
Client != null && Client.Email != "" &&
SelectedRecord != null &&
Date.Date >= DateTime.Now.Date);
createDealCommand = new DelegateCommand(CreateDeal, () => CurrentAccount.IsClient == false);
addRecordToDealCommand = new DelegateCommand(AddRecordToDeal, () => CurrentAccount.IsClient == false &&
Deal != null && SelectedRecord != null);
searchCommand = new DelegateCommand(Search, () => Accounts.Any(a => a.Login == currentAccount.Login && a.Password == currentAccount.Password) &&
!String.IsNullOrWhiteSpace(SearchBy) &&
(!String.IsNullOrWhiteSpace(SearchLine) || SearchBy == "All"));
showCommand = new DelegateCommand(Show, () => Accounts.Any(a => a.Login == currentAccount.Login && a.Password == currentAccount.Password) &&
!String.IsNullOrWhiteSpace(TopFor));
searchByList.Add("All");
searchByList.Add("Name");
searchByList.Add(nameof(Artist));
searchByList.Add(nameof(Genre));
topForTheList.Add("Day");
topForTheList.Add("Week");
topForTheList.Add("Month");
topForTheList.Add("Year");
TopFor = "Day";
selectedRecord = new Record()
{
DateOfPublishing = DateTime.Now
};
artist = new Artist();
genre = new Genre();
publisher = new Publisher();
deal = new Deal()
{
StartDate = DateTime.Now, EndDate = DateTime.Now
};
currentAccount = new Account()
{
Login = "", Password = "", IsClient = true
};
currentClient = new Client()
{
Account = currentAccount, Name = "", Surname = "", Phone = "", Email = "", Discount = 0
};
client = new Client()
{
Account = new Account()
{
Login = "", Password = ""
}, Name = "", Surname = "", Phone = "", Email = "", Discount = 0
};
FillAccounts();
FillClients();
PropertyChanged += (sender, args) =>
{
if (args.PropertyName == nameof(CurrentAccount))
{
loginCommand.RaiseCanExecuteChanged();
registrationCommand.RaiseCanExecuteChanged();
loginRegistrationShowCommand.RaiseCanExecuteChanged();
exitCommand.RaiseCanExecuteChanged();
addArtistCommand.RaiseCanExecuteChanged();
addGenreCommand.RaiseCanExecuteChanged();
addPublisherCommand.RaiseCanExecuteChanged();
addRecordCommand.RaiseCanExecuteChanged();
addRecordToDealCommand.RaiseCanExecuteChanged();
editRecordCommand.RaiseCanExecuteChanged();
removeRecordCommand.RaiseCanExecuteChanged();
sellRecordCommand.RaiseCanExecuteChanged();
setAsideCommand.RaiseCanExecuteChanged();
showCommand.RaiseCanExecuteChanged();
searchCommand.RaiseCanExecuteChanged();
createDealCommand.RaiseCanExecuteChanged();
discardRecordCommand.RaiseCanExecuteChanged();
}
else if (args.PropertyName == nameof(CurrentClient))
{
loginCommand.RaiseCanExecuteChanged();
registrationCommand.RaiseCanExecuteChanged();
loginRegistrationShowCommand.RaiseCanExecuteChanged();
exitCommand.RaiseCanExecuteChanged();
}
else if (args.PropertyName == nameof(Artist))
{
addArtistCommand.RaiseCanExecuteChanged();
addRecordCommand.RaiseCanExecuteChanged();
}
else if (args.PropertyName == nameof(Genre))
{
addGenreCommand.RaiseCanExecuteChanged();
addRecordCommand.RaiseCanExecuteChanged();
}
else if (args.PropertyName == nameof(Publisher))
{
addRecordCommand.RaiseCanExecuteChanged();
addPublisherCommand.RaiseCanExecuteChanged();
}
else if (args.PropertyName == nameof(SelectedRecord))
{
addRecordCommand.RaiseCanExecuteChanged();
addRecordToDealCommand.RaiseCanExecuteChanged();
editRecordCommand.RaiseCanExecuteChanged();
discardRecordCommand.RaiseCanExecuteChanged();
removeRecordCommand.RaiseCanExecuteChanged();
sellRecordCommand.RaiseCanExecuteChanged();
setAsideCommand.RaiseCanExecuteChanged();
CalculateTotal();
}
else if (args.PropertyName == nameof(Deal))
{
createDealCommand.RaiseCanExecuteChanged();
addRecordToDealCommand.RaiseCanExecuteChanged();
CalculateTotal();
}
else if (args.PropertyName == nameof(Date))
{
sellRecordCommand.RaiseCanExecuteChanged();
setAsideCommand.RaiseCanExecuteChanged();
}
else if (args.PropertyName == nameof(SearchBy))
{
searchCommand.RaiseCanExecuteChanged();
}
else if (args.PropertyName == nameof(SearchLine))
{
searchCommand.RaiseCanExecuteChanged();
}
else if (args.PropertyName == nameof(TopFor))
{
showCommand.RaiseCanExecuteChanged();
}
else if (args.PropertyName == nameof(Client))
{
sellRecordCommand.RaiseCanExecuteChanged();
setAsideCommand.RaiseCanExecuteChanged();
CalculateTotal();
}
else if (args.PropertyName == nameof(Total))
{
sellRecordCommand.RaiseCanExecuteChanged();
}
};
}