private async Task <List <LearningTask> > ProcessTasks(LearningActivity learningActivity, ApplicationUser currentUser, bool checkUpdated = false)
{
//Add each task in the activity to the database
//If a task has child tasks, add those first
List <LearningTask> finalTasks = new List <LearningTask>();
int orderCount = 0;
for (int i = 0; i < learningActivity.LearningTasks.Count(); i++)
{
LearningTask thisTask = learningActivity.LearningTasks.ElementAt(i);
thisTask.Order = orderCount++;
LearningTask dbTask = await AddTaskIfNeeded(thisTask, currentUser, checkUpdated);
List <LearningTask> finalChildTasks = new List <LearningTask>();
if (thisTask.ChildTasks != null)
{
foreach (LearningTask childTask in thisTask.ChildTasks)
{
childTask.ParentTask = dbTask;
finalChildTasks.Add(await AddTaskIfNeeded(childTask, currentUser, checkUpdated));
}
}
dbTask.ChildTasks = finalChildTasks;
await db.SaveChangesAsync();
finalTasks.Add(dbTask);
}
return(finalTasks);
}
private async Task <LearningTask> AddTaskIfNeeded(LearningTask thisTask, ApplicationUser currentUser, bool checkUpdated = false)
{
if (checkUpdated)
{
LearningTask existingTask = await db.LearningActivityTasks.FirstOrDefaultAsync(t => t.Id == thisTask.Id);
if (existingTask != null)
{
if (existingTask.Description == thisTask.Description &&
existingTask.ImageUrl == thisTask.ImageUrl &&
existingTask.JsonData == thisTask.JsonData &&
existingTask.Order == thisTask.Order)
{
// nothing has changed
return(existingTask);
}
// else something has changed - make a new task so that existing responses don't break
existingTask.SoftDeleted = true;
}
}
LearningTask dbTask = db.LearningActivityTasks.Add(new LearningTask
{
Author = currentUser,
Description = thisTask.Description,
JsonData = thisTask.JsonData,
TaskType = await db.TaskTypes.SingleAsync(tt => tt.Id == thisTask.TaskType.Id),
ParentTask = thisTask.ParentTask,
Order = thisTask.Order
});
if (dbTask.TaskType.IdName == "SCAN_QR")
{
await db.SaveChangesAsync();
dbTask.JsonData = await GenerateQR($"task-{dbTask.Id}", Common.ServerUtils.GetTaskQRCodeData(dbTask.Id));
}
await db.SaveChangesAsync();
return(dbTask);
}