public object Convert(object value, Type type, object parameter, string language)
{
string result = "";
if (value != null)
{
StringBuilder gridText = new StringBuilder();
Dictionary<float, float> mealItemIDs = (Dictionary<float, float>)value;
MealItemViewModel mealItem = new MealItemViewModel();
int loopCount = 0;
foreach (var mealItemID in mealItemIDs)
{
mealItem = mealItem.GetMealItemById((int)mealItemID.Key);
if (mealItem != null)
{
if (loopCount < mealItemIDs.Count - 1)
gridText.Append(mealItem.Name).Append(", ");
else
gridText.Append(mealItem.Name);
}
loopCount++;
}
result = gridText.ToString();
}
return result;
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
Type type = e.Parameter.GetType();
TotalAmountUOMTextBox.ItemsSource = _unitOfMeasureList;
if (type == typeof(FoodCategoryViewModel))
{
FoodCategoryViewModel category = (FoodCategoryViewModel)e.Parameter;
CategoryTextBox.Text = category.Name;
CategoryTextBox.IsReadOnly = true;
_existingMealItem = new MealItemViewModel();
_existingMealItem.Category = category.Name;
}
else if (type == typeof(MealItemViewModel))
{
_existingMealItem = (MealItemViewModel)e.Parameter;
CategoryTextBox.Text = _existingMealItem.Category;
CategoryTextBox.IsReadOnly = true;
NameTextBox.Text = _existingMealItem.Name;
NameTextBox.IsReadOnly = true;
ingredientsViewModel = new IngredientsViewModel();
_selectedIngredientsList = ingredientsViewModel.GetIngredients(_existingMealItem.IngredientIDsWithTotalAmount);
TotalAmountTextBox.Text = _existingMealItem.TotalAmount.ToString();
TotalAmountUOMTextBox.SelectedIndex = _existingMealItem.TotalAmountUnitOfMeasure-1;
var copy = new ObservableCollection<IngredientViewModel>(_selectedIngredientsList);
foreach (var ingredient in copy)
{
FindAndRemoveIngredient(_allIngredients, ingredient);
}
}
AllIngredientsList.ItemsSource = _allIngredients;
SelectedIngredientsList.ItemsSource = _selectedIngredientsList;
}
private async void SaveButton_Click(object sender, RoutedEventArgs e)
{
if (_existingMealItem == null)
{
_existingMealItem = new MealItemViewModel();
_existingMealItem.Name = NameTextBox.Text.ToString();
_existingMealItem.Category = CategoryTextBox.Text.ToString();
}
if (NameTextBox.Text == "")
{
var dialog = new MessageDialog("Bitte einen Namen angeben.");
await dialog.ShowAsync();
return;
}
if (_existingMealItem.Name == "")
_existingMealItem.Name = NameTextBox.Text.ToString();
_existingMealItem.TotalAmount = float.Parse(TotalAmountTextBox.Text, CultureInfo.InvariantCulture.NumberFormat);
UnitOfMeasureViewModel unitOfMeasure = (UnitOfMeasureViewModel)TotalAmountUOMTextBox.SelectedItem;
_existingMealItem.TotalAmountUnitOfMeasure = unitOfMeasure.Id;
string result = _existingMealItem.SaveMealItem(_existingMealItem);
}
private void MealItemsGridView_ItemClick(object sender, ItemClickEventArgs e)
{
currentSelectedMealItem = (MealItemViewModel)e.ClickedItem;
WeightTextBlock.Visibility = Visibility.Visible;
WeightTextBox.Visibility = Visibility.Visible;
UnitOfMeasureViewModel unitOfMeasure = new UnitOfMeasureViewModel();
string unitOfMeasureName = unitOfMeasure.GetUnitOfMeasure(currentSelectedMealItem.TotalAmountUnitOfMeasure).UnitName;
WeightTextBlock.Text = "Menge in " + unitOfMeasureName;
string mealItemWeight = "";
if (_meal.MealItemIDsWithWeight[currentSelectedMealItem.Id] > 0)
{
mealItemWeight = this._meal.MealItemIDsWithWeight[currentSelectedMealItem.Id].ToString();
}
else
{
float mealItemWeightDefault = currentSelectedMealItem.TotalAmount;
int numberGuestes = Int32.Parse(NumberOfGuestsTextBox.Text);
float totalWeight = mealItemWeightDefault * numberGuestes;
mealItemWeight = totalWeight.ToString();
}
WeightTextBox.Text = mealItemWeight.Replace('.', ',');
}
private void ResetWeightsInvokedHandler(IUICommand command)
{
if (command.Label == "Ja")
{
float mealItemTotalWeight = 0;
if (NumberOfGuestsTextBox.Text != "")
{
int numberOfGuests = Int32.Parse(NumberOfGuestsTextBox.Text);
MealItemViewModel defaultMealItem = new MealItemViewModel();
foreach (var mealIDAndWeight in _meal.MealItemIDsWithWeight.ToList())
{
defaultMealItem = defaultMealItem.GetMealItemById((int)mealIDAndWeight.Key);
mealItemTotalWeight = defaultMealItem.TotalAmount;
decimal roundedWeight = Math.Round((decimal)(mealItemTotalWeight * numberOfGuests), 0);
_meal.MealItemIDsWithWeight[mealIDAndWeight.Key] = (float)roundedWeight;
}
}
}
}
private async void ImportMealItemsData(string fileContent, string mealItemCategory)
{
string line = "";
string[] mealItemsRaw = fileContent.Split('|');
char[] trimChar = {'\n','\r'};
bool mealItemExists = false;
foreach(var mealItemRaw in mealItemsRaw)
{
if (mealItemRaw.ToString().Length == 0) { continue; }
string mealItemInfo = mealItemRaw.TrimStart(trimChar);
using (System.IO.StringReader stringReader = new System.IO.StringReader(mealItemInfo))
{
int lineNo = 0;
string mealItemName = "";
float grossWeight = 0;
float divisionFactor = 0;
string grossWeightUnitOfMeasure = "";
List<string> rawIngredients = new List<string>();
while ((line = await stringReader.ReadLineAsync()) != null)
{
// At 0 this should be the name
if (lineNo == 0)
{
mealItemName = CleanMealItemName(line);
MealItemViewModel mealItemView = new MealItemViewModel();
// In case the meal item exists we move on to the next
if (mealItemView.MealItemExists(mealItemName) == true) { mealItemExists = true; break; }
lineNo++;
continue;
}
if (line.Contains("Personen"))
{
string _grossWeight;
string _divisionFactor;
GetGrossWeightAndDivisionFactor(line, out _grossWeight,
out grossWeightUnitOfMeasure, out _divisionFactor);
_divisionFactor = _divisionFactor.Replace(',', '.');
_grossWeight = _grossWeight.Replace(',', '.');
divisionFactor = float.Parse(_divisionFactor, CultureInfo.InvariantCulture.NumberFormat);
grossWeight = float.Parse(_grossWeight, CultureInfo.InvariantCulture.NumberFormat) / divisionFactor;
lineNo++;
continue;
}
rawIngredients = InterpretIngredientDefinition(line);
lineNo++;
}
// Let's see if there was an inner break
if (mealItemExists) { mealItemExists = false; continue; }
// if go this far it means a new meal item
MealItemViewModel mealItem = new MealItemViewModel();
IngredientViewModel ingredient = null;
foreach (var rawIngredient in rawIngredients)
{
string amount;
string unitOfMeasure;
ingredient = GetIngredientDetails(rawIngredient, out amount, out unitOfMeasure);
if (ingredient != null)
{
UnitOfMeasureViewModel unitOfMeasureModel = new UnitOfMeasureViewModel();
unitOfMeasureModel = unitOfMeasureModel.GetUnitOfMeasure(ingredient.UnitOfMeasure);
amount = amount.Replace(',', '.');
float floatAmount = float.Parse(amount, CultureInfo.InvariantCulture.NumberFormat);
// Recalculating kilogramms and liters
if ((unitOfMeasure.Equals("kg", StringComparison.CurrentCultureIgnoreCase)) ||
(unitOfMeasure.Equals("Ltr", StringComparison.CurrentCultureIgnoreCase)))
floatAmount = floatAmount * 1000;
// Devive by the number of people all amounts were calculated for
floatAmount = floatAmount / divisionFactor;
mealItem.IngredientIDsWithTotalAmount.Add(ingredient.Id, floatAmount);
}
}
mealItem.Name = mealItemName;
if (grossWeightUnitOfMeasure.Equals("Ltr", StringComparison.CurrentCultureIgnoreCase) ||
grossWeightUnitOfMeasure.Equals("kg", StringComparison.CurrentCultureIgnoreCase))
grossWeight = grossWeight * 1000;
if (grossWeightUnitOfMeasure.Equals("kg", StringComparison.CurrentCultureIgnoreCase) ||
grossWeightUnitOfMeasure.Equals("g", StringComparison.CurrentCultureIgnoreCase))
mealItem.TotalAmountUnitOfMeasure = 1;
if (grossWeightUnitOfMeasure.Equals("Ltr", StringComparison.CurrentCultureIgnoreCase) ||
grossWeightUnitOfMeasure.Equals("ml", StringComparison.CurrentCultureIgnoreCase))
mealItem.TotalAmountUnitOfMeasure = 2;
mealItem.TotalAmount = grossWeight;
FoodCategoryViewModel mealItemCategoryModel = new FoodCategoryViewModel();
mealItemCategoryModel = mealItemCategoryModel.GetFoodCategoryByName(mealItemCategory);
if (mealItemCategoryModel != null) { mealItem.CategoryId = mealItemCategoryModel.Id; }
_mealItems.Add(mealItem);
}
}
}
public string SaveMealItem(MealItemViewModel mealitem)
{
string result = string.Empty;
using (var db = new SQLite.SQLiteConnection(App.DBPath))
{
string change = string.Empty;
try
{
var existingMealItem = (db.Table<MealItem>().Where(
c => c.Id == mealitem.Id)).SingleOrDefault();
if (existingMealItem != null)
{
existingMealItem.Name = mealitem.Name;
existingMealItem.Category = mealitem.Category;
existingMealItem.TotalAmount = mealitem.TotalAmount;
existingMealItem.TotalAmountUnitOfMeasure = mealitem.TotalAmountUnitOfMeasure;
existingMealItem.CategoryId = ((db.Table<FoodCategory>().Where(c => c.Name == mealitem.Category)).Single()).Id;
existingMealItem.IngredientIDsWithTotalAmount = (byte[])_dictionaryConverterFloat.Convert(mealitem.IngredientIDsWithTotalAmount, null, null, "");
int success = db.Update(existingMealItem);
}
else
{
var foodCategory = (db.Table<FoodCategory>().Where(c => c.Name == mealitem.Category)).Single();
int success = db.Insert(new MealItem()
{
Name = mealitem.Name,
Category = mealitem.Category,
CategoryId = foodCategory.Id,
TotalAmount = mealitem.TotalAmount,
TotalAmountUnitOfMeasure = mealitem.TotalAmountUnitOfMeasure,
IngredientIDsWithTotalAmount = (byte[])_dictionaryConverterFloat.Convert(mealitem.IngredientIDsWithTotalAmount, null, null, "")
});
}
result = "Success";
}
catch
{
result = "This meal item was not saved.";
}
}
return result;
}
public MealItemViewModel GetMealItemById(int meaItemId)
{
var mealitem = new MealItemViewModel();
using (var db = new SQLite.SQLiteConnection(App.DBPath))
{
try
{
var _mealitem = (db.Table<MealItem>().Where(
c => c.Id == meaItemId)).Single();
mealitem.Id = _mealitem.Id;
mealitem.Name = _mealitem.Name;
mealitem.Category = _mealitem.Category;
mealitem.TotalAmount = _mealitem.TotalAmount;
mealitem.TotalAmountUnitOfMeasure = _mealitem.TotalAmountUnitOfMeasure;
mealitem.IngredientIDsWithTotalAmount = (Dictionary<float, float>)_dictionaryConverterFloat.ConvertBack(_mealitem.IngredientIDsWithTotalAmount, null, null, "");
}
catch
{ }
}
return mealitem;
}
private string GetIngredientsAsText(IngredientsViewModel ingredientsView,
MealItemViewModel mealItem, Dictionary<float,float> mealItemIDsWithWeight)
{
StringBuilder sb = new StringBuilder();
ObservableCollection<IngredientViewModel> ingredients =
ingredientsView.GetIngredients(mealItem.IngredientIDsWithTotalAmount);
if (ingredients.Count > 0)
{
//sb.Append(@"\b ");
int loopCount = 0;
UnitOfMeasureViewModel unitOfMeasure = new UnitOfMeasureViewModel();
MealItemViewModel defaultMealItem = new MealItemViewModel();
defaultMealItem = defaultMealItem.GetMealItemById(mealItem.Id);
foreach (var ingredient in ingredients)
{
float ingredientDefaultWeight = mealItem.IngredientIDsWithTotalAmount[ingredient.Id];
if (defaultMealItem.TotalAmount == 0) defaultMealItem.TotalAmount = 1;
float ingredientWeight = (ingredientDefaultWeight / defaultMealItem.TotalAmount) * mealItemIDsWithWeight[mealItem.Id];
decimal roundedIngredientWeight = Math.Round((decimal)ingredientWeight, 0);
string uomName = unitOfMeasure.GetUnitOfMeasure(ingredient.UnitOfMeasure).Abbreviation;
sb.Append(roundedIngredientWeight.ToString());
sb.Append(uomName).Append(" ");
sb.Append(ingredient.Name);
if ((ingredients.Count >1) && (loopCount < (ingredients.Count-1)))
{ sb.Append(", "); }
loopCount++;
}
//sb.Append(@"\line\b0");
sb.Append(@"\line");
return sb.ToString();
}
else
return "";
}
public string SetDefaultMealItemWeights(IMealViewModel meal)
{
string result = "";
MealItemViewModel mealItem = new MealItemViewModel();
foreach (var mealItemKeyValue in meal.MealItemIDsWithWeight.ToList())
{
mealItem = mealItem.GetMealItemById((int)mealItemKeyValue.Key);
float mealItemWeightDefault = mealItem.TotalAmount;
float totalWeight = mealItemWeightDefault * meal.NumberOfGuests;
meal.MealItemIDsWithWeight[mealItemKeyValue.Key] = totalWeight;
}
return result;
}
