v0.2 Preview: Construction Plan.

backend/contest/views.py

@@ -0,0 +1,100 @@
+from django.shortcuts import get_object_or_404
+from rest_framework import permissions, status
+from rest_framework.response import Response
+from rest_framework.views import APIView
+
+from .models import Contest, ContestAttempt, RealtimeMatch
+from .services import (
+    find_match,
+    match_payload,
+    start_attempt,
+    submit_attempt,
+)
+
+
+class ContestListView(APIView):
+    permission_classes = [permissions.AllowAny]
+
+    def get(self, request):
+        contests = Contest.objects.filter(status=Contest.Status.PUBLISHED).order_by(
+            "kind", "title"
+        )
+        return Response(
+            [
+                {
+                    "slug": contest.slug,
+                    "title": contest.title,
+                    "kind": contest.kind,
+                    "track": contest.track,
+                    "duration_seconds": contest.duration_seconds,
+                    "starts_at": contest.starts_at,
+                    "ends_at": contest.ends_at,
+                }
+                for contest in contests
+            ]
+        )
+
+
+class AttemptStartView(APIView):
+    def post(self, request, slug):
+        contest = get_object_or_404(Contest, slug=slug)
+        return Response(start_attempt(request.user, contest), status=status.HTTP_201_CREATED)
+
+
+class AttemptSubmitView(APIView):
+    def post(self, request, attempt_id):
+        get_object_or_404(ContestAttempt, id=attempt_id, user=request.user)
+        payload = submit_attempt(
+            user=request.user,
+            attempt_id=attempt_id,
+            raw_answers=request.data.get("answers", []),
+            submission_key=request.headers.get("Idempotency-Key"),
+        )
+        return Response(payload)
+
+
+class MatchmakingView(APIView):
+    def post(self, request, slug):
+        contest = get_object_or_404(Contest, slug=slug)
+        match = find_match(request.user, contest)
+        return Response(match_payload(match, request.user), status=status.HTTP_202_ACCEPTED)
+
+
+class MatchStateView(APIView):
+    def get(self, request, match_id):
+        match = get_object_or_404(
+            RealtimeMatch.objects.select_related("player_one", "player_two"),
+            id=match_id,
+        )
+        if request.user.id not in (match.player_one_id, match.player_two_id):
+            return Response(status=status.HTTP_403_FORBIDDEN)
+        return Response(match_payload(match, request.user))
+
+
+class LeaderboardView(APIView):
+    permission_classes = [permissions.AllowAny]
+
+    def get(self, request, slug):
+        contest = get_object_or_404(Contest, slug=slug)
+        attempts = (
+            ContestAttempt.objects.filter(
+                contest=contest,
+                status=ContestAttempt.Status.SUBMITTED,
+                cheat_flags__isnull=True,
+            )
+            .select_related("user")
+            .order_by("-score", "duration_ms", "submitted_at")[:100]
+        )
+        return Response(
+            [
+                {
+                    "rank": index,
+                    "nickname": attempt.user.nickname,
+                    "track": attempt.user.track,
+                    "score": attempt.score,
+                    "correct_count": attempt.correct_count,
+                    "duration_ms": attempt.duration_ms,
+                }
+                for index, attempt in enumerate(attempts, start=1)
+            ]
+        )