add ticketing app and endpoints

backend/core/settings.py

@@ -97,6 +97,7 @@ INSTALLED_APPS = [
     'product',
     'account',
     'entertainment',
+    'ticket',
 ]
 
 MIDDLEWARE = [

backend/core/urls.py

@@ -20,6 +20,7 @@ urlpatterns = [
     # path('comment/<int:pk>', views.CommentView.as_view(), name='comment-list'),
     path('products/', include('product.urls')),
     path('accounts/', include('account.urls')),
+    path('tickets/', include('ticket.urls')),
     path('', SpectacularSwaggerView.as_view(url_name='schema'), name='swagger-ui'),
 ]
 

backend/ticket/admin.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.

backend/ticket/apps.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class TicketConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'ticket'

backend/ticket/migrations/0001_initial.py

@@ -0,0 +1,39 @@
+# Generated by Django 5.1.2 on 2024-12-14 10:51
+
+import django.db.models.deletion
+from django.conf import settings
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+        migrations.swappable_dependency(settings.AUTH_USER_MODEL),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Ticket',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('subject', models.CharField(max_length=255)),
+                ('status', models.CharField(choices=[('open', 'Open'), ('in_progress', 'In Progress'), ('resolved', 'Resolved'), ('closed', 'Closed')], default='open', max_length=20)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('updated_at', models.DateTimeField(auto_now=True)),
+                ('admin', models.ForeignKey(blank=True, null=True, on_delete=django.db.models.deletion.SET_NULL, related_name='assigned_tickets', to=settings.AUTH_USER_MODEL)),
+                ('customer', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='tickets', to=settings.AUTH_USER_MODEL)),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Message',
+            fields=[
+                ('id', models.BigAutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('content', models.TextField()),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+                ('sender', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, to=settings.AUTH_USER_MODEL)),
+                ('ticket', models.ForeignKey(on_delete=django.db.models.deletion.CASCADE, related_name='messages', to='ticket.ticket')),
+            ],
+        ),
+    ]

backend/ticket/models.py

@@ -0,0 +1,29 @@
+from django.db import models
+from account.models import User
+
+class Ticket(models.Model):
+    STATUS_CHOICES = [
+        ('open', 'Open'),
+        ('in_progress', 'In Progress'),
+        ('resolved', 'Resolved'),
+        ('closed', 'Closed'),
+    ]
+
+    subject = models.CharField(max_length=255)
+    customer = models.ForeignKey(User, on_delete=models.CASCADE, related_name="tickets")
+    admin = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, blank=True, related_name="assigned_tickets")
+    status = models.CharField(max_length=20, choices=STATUS_CHOICES, default='open')
+    created_at = models.DateTimeField(auto_now_add=True)
+    updated_at = models.DateTimeField(auto_now=True)
+
+    def __str__(self):
+        return self.subject
+
+class Message(models.Model):
+    ticket = models.ForeignKey(Ticket, on_delete=models.CASCADE, related_name="messages")
+    sender = models.ForeignKey(User, on_delete=models.CASCADE)
+    content = models.TextField()
+    created_at = models.DateTimeField(auto_now_add=True)
+
+    def __str__(self):
+        return f"Message by {self.sender.username} on {self.ticket.subject}"

backend/ticket/serializers.py

@@ -0,0 +1,14 @@
+from rest_framework import serializers
+from .models import Ticket, Message
+
+class MessageSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Message
+        fields = '__all__'
+
+class TicketSerializer(serializers.ModelSerializer):
+    messages = MessageSerializer(many=True, read_only=True)
+
+    class Meta:
+        model = Ticket
+        fields = '__all__'

backend/ticket/tests.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

backend/ticket/urls.py

@@ -0,0 +1,16 @@
+from django.urls import path
+from .views import (
+    TicketCreateView,
+    TicketListView,
+    TicketDetailView,
+    MessageCreateView,
+    UpdateTicketStatusView
+)
+
+urlpatterns = [
+    path('create', TicketCreateView.as_view(), name='ticket-create'),
+    path('', TicketListView.as_view(), name='ticket-list'),
+    path('<int:pk>', TicketDetailView.as_view(), name='ticket-detail'),
+    path('<int:pk>/messages', MessageCreateView.as_view(), name='message-create'),
+    path('<int:pk>/update-status', UpdateTicketStatusView.as_view(), name='update-ticket-status'),
+]

backend/ticket/views.py

@@ -0,0 +1,65 @@
+from rest_framework import generics, permissions
+from rest_framework.response import Response
+from rest_framework.views import APIView
+from .models import Ticket, Message
+from .serializers import TicketSerializer, MessageSerializer
+
+class TicketCreateView(generics.CreateAPIView):
+    queryset = Ticket.objects.all()
+    serializer_class = TicketSerializer
+    permission_classes = [permissions.IsAuthenticated]
+
+    def perform_create(self, serializer):
+        serializer.save(customer=self.request.user)
+
+
+class TicketListView(generics.ListAPIView):
+    serializer_class = TicketSerializer
+    permission_classes = [permissions.IsAuthenticated]
+
+    def get_queryset(self):
+        user = self.request.user
+        if user.is_staff:
+            return Ticket.objects.all()
+        return Ticket.objects.filter(customer=user)
+
+
+class TicketDetailView(generics.RetrieveAPIView):
+    queryset = Ticket.objects.all()
+    serializer_class = TicketSerializer
+    permission_classes = [permissions.IsAuthenticated]
+
+    def get_queryset(self):
+        user = self.request.user
+        if user.is_staff:
+            return Ticket.objects.all()
+        return Ticket.objects.filter(customer=user)
+
+
+class MessageCreateView(generics.CreateAPIView):
+    queryset = Message.objects.all()
+    serializer_class = MessageSerializer
+    permission_classes = [permissions.IsAuthenticated]
+
+    def perform_create(self, serializer):
+        ticket = serializer.validated_data.get('ticket')
+        if self.request.user != ticket.customer and not self.request.user.is_staff:
+            raise permissions.PermissionDenied("You are not authorized to send a message to this ticket.")
+        serializer.save(sender=self.request.user)
+
+
+class UpdateTicketStatusView(APIView):
+    permission_classes = [permissions.IsAdminUser]
+
+    def post(self, request, pk):
+        try:
+            ticket = Ticket.objects.get(pk=pk)
+        except Ticket.DoesNotExist:
+            return Response({"error": "Ticket not found"}, status=404)
+
+        new_status = request.data.get('status')
+        if new_status not in ['open', 'in_progress', 'resolved', 'closed']:
+            return Response({"error": "Invalid status"}, status=400)
+        ticket.status = new_status
+        ticket.save()
+        return Response({"message": "Ticket status updated successfully"})