/// <summary>
/// Randoms the words.
/// </summary>
/// <param name="model">The model.</param>
/// <returns>
/// Exam words for test
/// </returns>
public async Task <ExamTest> RandomWords(StartRequestExamTestModel model)
{
var knownLanguageType =
await _flashcardDbContext.LanguageTypes.FirstOrDefaultAsync(l => l.Id == model.KnownLanguageTypeId);
if (knownLanguageType == null)
{
throw new NotFoundException("Known language type not found");
}
var learningLanguageType =
await _flashcardDbContext.LanguageTypes.FirstOrDefaultAsync(l => l.Id == model.LearningLanguageTypeId);
if (learningLanguageType == null)
{
throw new NotFoundException("Learning language type not found");
}
var examTest = new ExamTest
{
KnownLanguageType = knownLanguageType,
LearningLanguageType = learningLanguageType,
Created = DateTime.Now
};
using (var transaction = _flashcardDbContext.Database.BeginTransaction())
{
try
{
await _flashcardDbContext.ExamTests.AddAsync(examTest);
var examTestWords = (await _wordService.GetRandomWords(model.CategoryId, model.WordsLength))?.Select(w => new ExamTestWord
{
ExamTest = examTest,
Word = w
}) ?? new List <ExamTestWord>();
if (!examTestWords.Any())
{
throw new BadRequestException("No words to fetch");
}
await _flashcardDbContext.ExamTestWords.AddRangeAsync(examTestWords);
_flashcardDbContext.SaveChanges();
}
catch
{
transaction.Rollback();
throw;
}
}
return(examTest);
}
public async Task <IActionResult> RandomWords([FromBody] StartRequestExamTestModel model)
{
return(await OnActionWorkAsync(async() =>
new ObjectResult(await _examTestService.RandomWords(model))));
}
