@Nullable
public TaskFile getTaskFile(@NotNull final VirtualFile file) {
if (myCourse == null) {
return null;
}
final VirtualFile taskDir = file.getParent();
if (taskDir == null) {
return null;
}
final String taskDirName = taskDir.getName();
if (taskDirName.contains(Task.TASK_DIR)) {
final VirtualFile lessonDir = taskDir.getParent();
if (lessonDir != null) {
int lessonIndex = StudyUtils.getIndex(lessonDir.getName(), StudyNames.LESSON_DIR);
List<Lesson> lessons = myCourse.getLessons();
if (!StudyUtils.indexIsValid(lessonIndex, lessons)) {
return null;
}
final Lesson lesson = lessons.get(lessonIndex);
int taskIndex = StudyUtils.getIndex(taskDirName, Task.TASK_DIR);
final List<Task> tasks = lesson.getTaskList();
if (!StudyUtils.indexIsValid(taskIndex, tasks)) {
return null;
}
final Task task = tasks.get(taskIndex);
return task.getFile(file.getName());
}
}
return null;
}
