public function testItShould_fetchRandomExercise()
{
$previousExerciseId = rand(1, 100);
$exercise = $this->createExercise();
$this->exerciseRepository->method('fetchRandomExerciseOfLesson')->with($this->lesson->id, $this->user->id, $previousExerciseId)->willReturn($exercise);
$this->assertEquals($exercise, $this->lesson->fetchRandomExercise($this->user->id, $previousExerciseId));
}
/**
* @param Request $request
* @return RedirectResponse
*/
public function store(Request $request) : RedirectResponse
{
$this->validate($request, ['visibility' => 'required|in:public,private', 'name' => 'required|string']);
$lesson = new Lesson($request->all());
$lesson->owner_id = $this->user()->id;
$lesson->save();
return redirect('/lessons/' . $lesson->id);
}
private function assertExerciseCanWin(Lesson $lesson, int $userId, int $exerciseId, int $previousId = null)
{
// 1000 retries is more then enough
$counter = 1000;
do {
if (!$counter--) {
$this->fail('Unable to fetch random exercise.');
}
$result = $lesson->fetchRandomExercise($userId, $previousId);
$this->assertInstanceOf(Exercise::class, $result);
} while ($result->id != $exerciseId && $result->id && $previousId);
}
/**
* Public lessons user does not own and does not subscribe.
* @return EloquentCollection
*/
public function availableLessons() : EloquentCollection
{
return Lesson::query()->where('lessons.owner_id', '!=', $this->id)->where('lessons.visibility', '=', 'public')->whereNotIn('lessons.id', $this->subscribedLessons()->pluck('id'))->with('exercises', 'subscribers')->get();
}
/**
* @param FetchRandomExerciseOfLessonRequest $request
* @param Lesson $lesson
* @return JsonResponse
* @throws NotEnoughExercisesException
*/
public function fetchRandomExerciseOfLesson(FetchRandomExerciseOfLessonRequest $request, Lesson $lesson)
{
$exercise = $lesson->fetchRandomExercise($this->user()->id, $request->previous_exercise_id);
return $this->response($exercise);
}
/**
* Lesson must have certain number of exercises, and user must have access.
*
* @param User $user
* @param Lesson $lesson
* @return bool
*/
public function learn(User $user, Lesson $lesson)
{
return $lesson->exercises()->count() >= config('app.min_exercises_to_learn_lesson') && $this->access($user, $lesson);
}
/**
* @param PatchLessonRequest $request
* @param Lesson $lesson
* @return JsonResponse
*/
public function updateLesson(PatchLessonRequest $request, Lesson $lesson)
{
$lesson->update($request->all());
return $this->response($lesson);
}