add message

announcement/migrations/0006_message.py

@@ -0,0 +1,61 @@
+# Generated by Django 5.0.6 on 2024-06-25 11:47
+
+import django.db.models.deletion
+import utils.models
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("announcement", "0005_alter_announcement_options_announcement_top"),
+        ("submission", "0013_alter_submission_info_and_more"),
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name="Message",
+            fields=[
+                (
+                    "id",
+                    models.AutoField(
+                        auto_created=True,
+                        primary_key=True,
+                        serialize=False,
+                        verbose_name="ID",
+                    ),
+                ),
+                ("message", utils.models.RichTextField()),
+                ("create_time", models.DateTimeField(auto_now_add=True)),
+                (
+                    "recipient",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="recipient",
+                        to=settings.AUTH_USER_MODEL,
+                    ),
+                ),
+                (
+                    "sender",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        related_name="sender",
+                        to=settings.AUTH_USER_MODEL,
+                    ),
+                ),
+                (
+                    "submission",
+                    models.ForeignKey(
+                        on_delete=django.db.models.deletion.CASCADE,
+                        to="submission.submission",
+                    ),
+                ),
+            ],
+            options={
+                "db_table": "message",
+                "ordering": ("-create_time",),
+            },
+        ),
+    ]

announcement/models.py

@@ -1,6 +1,7 @@
 from django.db import models
 
 from account.models import User
+from submission.models import Submission
 from utils.models import RichTextField
 
 
@@ -18,3 +19,15 @@ class Announcement(models.Model):
     class Meta:
         db_table = "announcement"
         ordering = ("-top", "-create_time",)
+
+
+class Message(models.Model):
+    sender = models.ForeignKey(User, on_delete=models.CASCADE, related_name="sender")
+    recipient = models.ForeignKey(User, on_delete=models.CASCADE, related_name="recipient")
+    submission = models.ForeignKey(Submission, on_delete=models.CASCADE)
+    message = RichTextField()
+    create_time = models.DateTimeField(auto_now_add=True)
+
+    class Meta:
+        db_table = "message"
+        ordering = ("-create_time",)

announcement/serializers.py

@@ -1,7 +1,8 @@
+from submission.serializers import SubmissionCodeSerializer
 from utils.api import serializers
 from utils.api._serializers import UsernameSerializer
 
-from .models import Announcement
+from .models import Announcement, Message
 
 
 class CreateAnnouncementSerializer(serializers.Serializer):
@@ -35,3 +36,29 @@ class EditAnnouncementSerializer(serializers.Serializer):
     content = serializers.CharField(max_length=1024 * 1024 * 8)
     visible = serializers.BooleanField()
     top = serializers.BooleanField()
+
+
+class MessageSerializer(serializers.Serializer):
+    sender = UsernameSerializer()
+    recipient = UsernameSerializer()
+    submission = SubmissionCodeSerializer()
+
+    class Meta:
+        model = Message
+        fields = "__all__"
+
+
+class MessageListSerializer(serializers.Serializer):
+    sender = UsernameSerializer()
+    recipient = UsernameSerializer()
+    submission = SubmissionCodeSerializer()
+
+    class Meta:
+        model = Message
+        exclude = ["message"]
+
+
+class CreateMessageSerializer(serializers.Serializer):
+    recipient = serializers.IntegerField()
+    submission = serializers.CharField()
+    message = serializers.CharField()

announcement/urls/oj.py

@@ -1,7 +1,8 @@
 from django.urls import re_path as url
 
-from ..views.oj import AnnouncementAPI
+from ..views.oj import AnnouncementAPI, MessageAPI
 
 urlpatterns = [
     url(r"^announcement/?$", AnnouncementAPI.as_view(), name="announcement_api"),
+    url(r"^message/?$", MessageAPI.as_view(), name="message_api"),
 ]

announcement/views/oj.py

@@ -1,7 +1,14 @@
+from account.decorators import super_admin_required, login_required
+from account.models import User
+from submission.models import Submission
 from utils.api import APIView
 
-from announcement.models import Announcement
-from announcement.serializers import AnnouncementSerializer, AnnouncementListSerializer
+from announcement.models import Announcement, Message
+from announcement.serializers import (AnnouncementSerializer, 
+                                      AnnouncementListSerializer, 
+                                      CreateMessageSerializer, MessageListSerializer, 
+                                      MessageSerializer)
+from utils.api.api import validate_serializer
 
 
 class AnnouncementAPI(APIView):
@@ -16,3 +23,36 @@ class AnnouncementAPI(APIView):
 
         announcements = Announcement.objects.filter(visible=True)
         return self.success(self.paginate_data(request, announcements, AnnouncementListSerializer))
+
+
+class MessageAPI(APIView):
+    @login_required
+    def get(self, request):
+        message_id = request.GET.get("id")
+        if message_id:
+            try:
+                message = Message.objects.filter(id=message_id, recipient=request.user)
+                return self.success(MessageSerializer(message).data)
+            except Message.DoesNotExist:
+                return self.error("Message does not exist")
+        else:
+            messages = Message.objects.filter(recipient=request.user)
+            return self.success(self.paginate_data(request, messages, MessageListSerializer))         
+    
+    @validate_serializer(CreateMessageSerializer)
+    @super_admin_required
+    def post(self, request):
+        data = request.data
+        try:
+            recipient = User.objects.get(id=data["recipient"], is_disabled=False)
+        except User.DoesNotExist:
+            return self.error("User does not exist")
+        try:
+            submission = Submission.objects.get(id=data["submission"])
+        except Submission.DoesNotExist:
+            return self.error("Submission does not exist")
+        Message.objects.create(submission=submission,
+                               message=data["message"],
+                               sender=request.user,
+                               recipient=recipient)
+        return self.success()

submission/serializers.py

@@ -31,6 +31,13 @@ class SubmissionSafeModelSerializer(serializers.ModelSerializer):
         model = Submission
         exclude = ("info", "contest", "ip")
 
+class SubmissionCodeSerializer(serializers.Serializer):
+    problem = serializers.SlugRelatedField(read_only=True, slug_field="_id")
+
+    class Meta:
+        model = Submission
+        field = ("id", "code", "problem", "result", "language")
+
 
 class SubmissionListSerializer(serializers.ModelSerializer):
     problem = serializers.SlugRelatedField(read_only=True, slug_field="_id")