public async Task <GrammarExercise> EditGrammarExerciseAsync(GrammarExercise grammarExercise)
{
var dbGrammarExercise = _mapper.Map <DbGrammarExercise>(grammarExercise);
return(_mapper.Map <GrammarExercise>(
await _exerciseRepository.EditGrammarExerciseAsync(dbGrammarExercise)));
}
public GrammarChooseOneExerciseViewModel(GrammarExercise grammarExercise, ICommand nextCommand)
{
Exercise = grammarExercise;
NextCommand = nextCommand;
Answers = new List <string>();
SetAnswersRandom(Answers, Exercise);
Answer_Click = new RelayCommand <string>(CheckAnswer);
}
private void GrammarGridView_ItemClick(object sender, ItemClickEventArgs e)
{
GrammarExercise parameter;
if (e.ClickedItem.GetType() == typeof(NewGrammarExercise))
{
parameter = new GrammarExercise
{
TestId = ViewModel.Test.ID
};
}
else
{
parameter = (GrammarExercise)e.ClickedItem;
}
NavigationService.Navigate(typeof(EditGrammarExercisePage), parameter);
}
public async Task <bool> DeleteGrammarExerciseAsync(GrammarExercise grammarExercise)
{
using (var client = new HttpClient())
{
InitializeClient(client);
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("api/exercise"));
HttpResponseMessage response = await client.DeleteAsync($"{BaseUrl}/api/exercise/grammar/{grammarExercise.Id}");
if (response.IsSuccessStatusCode)
{
return(true);
}
else
{
return(false);
}
}
}
protected void SetAnswersRandom(List <string> answers, GrammarExercise exercise)
{
answers.Add(exercise.CorrectAnswer);
answers.Add(exercise.WrongAnswer1);
answers.Add(exercise.WrongAnswer2);
answers.Add(exercise.WrongAnswer3);
Random random = new Random();
int n = answers.Count;
while (n > 1)
{
n--;
int k = random.Next(n + 1);
string value = answers[k];
answers[k] = answers[n];
answers[n] = value;
}
}
public async Task <GrammarExercise> PutGrammarExerciseAsync(GrammarExercise grammarExercise)
{
using (var client = new HttpClient())
{
InitializeClient(client);
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("api/exercise"));
HttpResponseMessage response = await client.PutAsJsonAsync("api/exercise/grammar", grammarExercise);
if (response.IsSuccessStatusCode)
{
var serializer = new DataContractJsonSerializer(typeof(GrammarExercise));
return(serializer.ReadObject(await response.Content.ReadAsStreamAsync()) as GrammarExercise);
}
else
{
return(null);
}
}
}
public async Task <IActionResult> EditGrammarExerciseAsync([FromBody] GrammarExercise grammarExercise)
{
return(Ok(await _exerciseManager.EditGrammarExerciseAsync(grammarExercise)));
}
public GrammarChooseOneExerciseView(GrammarExercise grammarExercise, ICommand nextCommand)
{
this.InitializeComponent();
ViewModel = new GrammarChooseOneExerciseViewModel(grammarExercise, nextCommand);
DataContext = ViewModel;
}