public async Task <Dictionary <string, object> > GetSyncResponse(int eventId, int teamId, int puzzleId, List <int> query_puzzle_ids,
int?min_solve_count, string annotations, string last_sync_time)
{
SyncResponse response = new SyncResponse();
// Get information for the puzzle that's being sync'ed.
Puzzle thisPuzzle = await context.Puzzles.Where(puz => puz.ID == puzzleId).FirstOrDefaultAsync();
if (thisPuzzle == null)
{
response.AddError("Could not find the puzzle you tried to sync.");
return(response.GetResult());
}
// Check to make sure that they're not trying to sync a puzzle and event that don't go together.
// That could be a security issue, allowing them to unlock pieces for a puzzle using the progress
// they made in a whole different event!
if (thisPuzzle.Event.ID != eventId)
{
response.AddError("That puzzle doesn't belong to that event.");
return(response.GetResult());
}
// Get the site version for this puzzle, so that if it's changed since the last time the
// requester sync'ed, the requester will know to reload itself.
response.SetSiteVersion(GetSiteVersion(thisPuzzle));
// Decode the request. If there are any errors, return an error response.
DecodedSyncRequest request = new DecodedSyncRequest(query_puzzle_ids, min_solve_count, annotations, last_sync_time,
thisPuzzle.MaxAnnotationKey, ref response);
// Do any processing that requires fetching the list of all puzzles this team has
// solved. Pass thisPuzzle.Group as the groupExcludedFromSolveCount parameter so that,
// when counting solves, we don't count solves in the same group as this puzzle as part
// of the solve count.
await HandleSyncAspectsRequiringListOfSolvedPuzzles(request, response, thisPuzzle.Group, teamId, eventId);
// Store any annotations the requester provided
await StoreAnnotations(request, response, thisPuzzle.ID, teamId);
// Fetch and return any annotations that the requester may not have yet
await GetAnnotationsRequesterLacks(request, response, thisPuzzle.ID, teamId);
return(response.GetResult());
}