/// <summary>
/// Initializes the RecipeListViewModel object.
/// </summary>
/// <param name="loadTask">The task to load the list of recipes to display.</param>
/// <param name="localDataManager">The LocalDataManger object.</param>
/// <param name="navigation">The INavigation object for managing pages.</param>
/// <param name="titleString">The string to be displayed in the navigation bar.</param>
/// <param name="noResultsString">The string to display if no recipes are returned.</param>
/// <param name="containsSavedItems">Flag for whether the recipe list will contain saved recipe items.</param>
public RecipeListViewModel(
Task <List <Recipe> > loadTask,
LocalDataManager localDataManager,
INavigation navigation,
string titleString,
string noResultsString,
bool containsSavedItems)
{
_localDataManager = localDataManager;
_navigation = navigation;
_containsSavedItems = containsSavedItems;
TitleString = titleString;
NoResultsString = noResultsString;
OpenRecipeCommand = new Command(OpenRecipe);
// Task to wait for recipe list to load, then show the result to the user.
Task.Run(async() =>
{
try
{
UserIngredients = await _localDataManager.GetIngredients();
var result = await loadTask;
if (_containsSavedItems)
{
CalculateMissingIngredients(result);
////result.Sort(ObjectComparisons.SortByRecipeName);
result.Sort(ObjectComparisons.SortByMissingIngredients);
}
RecipeResults = new ObservableCollection <Recipe>(result);
SearchHasResults = RecipeResults.Count != 0;
}
catch (Exception e)
{
LoadError = true;
SearchHasResults = true; // Set to true in order to hide NoResults Label.
RecipeResults = new ObservableCollection <Recipe>();
}
SearchComplete = true;
OnPropertyChanged(nameof(RecipeResults));
});
}
