added tutorial 14

Tutorial 14/api/admin.py

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+from django.contrib import admin
+
+# Register your models here.

Tutorial 14/api/apps.py

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+from django.apps import AppConfig
+
+
+class ApiConfig(AppConfig):
+    name = 'api'

Tutorial 14/api/migrations/0001_initial.py

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+# Generated by Django 3.1.1 on 2020-11-05 02:22
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    initial = True
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Room',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
+                ('code', models.CharField(default='', max_length=8, unique=True)),
+                ('host', models.CharField(max_length=50, unique=True)),
+                ('guest_can_pause', models.BooleanField(default=False)),
+                ('votes_to_skip', models.IntegerField(default=1)),
+                ('created_at', models.DateTimeField(auto_now_add=True)),
+            ],
+        ),
+    ]

Tutorial 14/api/migrations/0002_auto_20201218_1626.py

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+# Generated by Django 3.1.2 on 2020-12-18 21:26
+
+import api.models
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('api', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='room',
+            name='code',
+            field=models.CharField(default=api.models.generate_unique_code, max_length=8, unique=True),
+        ),
+    ]

Tutorial 14/api/models.py

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+from django.db import models
+import string
+import random
+
+
+def generate_unique_code():
+    length = 6
+
+    while True:
+        code = ''.join(random.choices(string.ascii_uppercase, k=length))
+        if Room.objects.filter(code=code).count() == 0:
+            break
+
+    return code
+
+
+class Room(models.Model):
+    code = models.CharField(
+        max_length=8, default=generate_unique_code, unique=True)
+    host = models.CharField(max_length=50, unique=True)
+    guest_can_pause = models.BooleanField(null=False, default=False)
+    votes_to_skip = models.IntegerField(null=False, default=1)
+    created_at = models.DateTimeField(auto_now_add=True)

Tutorial 14/api/serializers.py

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+from rest_framework import serializers
+from .models import Room
+
+
+class RoomSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Room
+        fields = ('id', 'code', 'host', 'guest_can_pause',
+                  'votes_to_skip', 'created_at')
+
+
+class CreateRoomSerializer(serializers.ModelSerializer):
+    class Meta:
+        model = Room
+        fields = ('guest_can_pause', 'votes_to_skip')
+
+
+class UpdateRoomSerializer(serializers.ModelSerializer):
+    code = serializers.CharField(validators=[])
+
+    class Meta:
+        model = Room
+        fields = ('guest_can_pause', 'votes_to_skip', 'code')

Tutorial 14/api/tests.py

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+from django.test import TestCase
+
+# Create your tests here.

Tutorial 14/api/urls.py

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+from django.urls import path
+from .views import RoomView, CreateRoomView, GetRoom, JoinRoom, UserInRoom, LeaveRoom, UpdateRoom
+
+urlpatterns = [
+    path('room', RoomView.as_view()),
+    path('create-room', CreateRoomView.as_view()),
+    path('get-room', GetRoom.as_view()),
+    path('join-room', JoinRoom.as_view()),
+    path('user-in-room', UserInRoom.as_view()),
+    path('leave-room', LeaveRoom.as_view()),
+    path('update-room', UpdateRoom.as_view())
+]

Tutorial 14/api/views.py

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+from django.shortcuts import render
+from rest_framework import generics, status
+from .serializers import RoomSerializer, CreateRoomSerializer, UpdateRoomSerializer
+from .models import Room
+from rest_framework.views import APIView
+from rest_framework.response import Response
+from django.http import JsonResponse
+
+# Create your views here.
+
+
+class RoomView(generics.ListAPIView):
+    queryset = Room.objects.all()
+    serializer_class = RoomSerializer
+
+
+class GetRoom(APIView):
+    serializer_class = RoomSerializer
+    lookup_url_kwarg = 'code'
+
+    def get(self, request, format=None):
+        code = request.GET.get(self.lookup_url_kwarg)
+        if code != None:
+            room = Room.objects.filter(code=code)
+            if len(room) > 0:
+                data = RoomSerializer(room[0]).data
+                data['is_host'] = self.request.session.session_key == room[0].host
+                return Response(data, status=status.HTTP_200_OK)
+            return Response({'Room Not Found': 'Invalid Room Code.'}, status=status.HTTP_404_NOT_FOUND)
+
+        return Response({'Bad Request': 'Code paramater not found in request'}, status=status.HTTP_400_BAD_REQUEST)
+
+
+class JoinRoom(APIView):
+    lookup_url_kwarg = 'code'
+
+    def post(self, request, format=None):
+        if not self.request.session.exists(self.request.session.session_key):
+            self.request.session.create()
+
+        code = request.data.get(self.lookup_url_kwarg)
+        if code != None:
+            room_result = Room.objects.filter(code=code)
+            if len(room_result) > 0:
+                room = room_result[0]
+                self.request.session['room_code'] = code
+                return Response({'message': 'Room Joined!'}, status=status.HTTP_200_OK)
+
+            return Response({'Bad Request': 'Invalid Room Code'}, status=status.HTTP_400_BAD_REQUEST)
+
+        return Response({'Bad Request': 'Invalid post data, did not find a code key'}, status=status.HTTP_400_BAD_REQUEST)
+
+
+class CreateRoomView(APIView):
+    serializer_class = CreateRoomSerializer
+
+    def post(self, request, format=None):
+        if not self.request.session.exists(self.request.session.session_key):
+            self.request.session.create()
+
+        serializer = self.serializer_class(data=request.data)
+        if serializer.is_valid():
+            guest_can_pause = serializer.data.get('guest_can_pause')
+            votes_to_skip = serializer.data.get('votes_to_skip')
+            host = self.request.session.session_key
+            queryset = Room.objects.filter(host=host)
+            if queryset.exists():
+                room = queryset[0]
+                room.guest_can_pause = guest_can_pause
+                room.votes_to_skip = votes_to_skip
+                room.save(update_fields=['guest_can_pause', 'votes_to_skip'])
+                self.request.session['room_code'] = room.code
+                return Response(RoomSerializer(room).data, status=status.HTTP_200_OK)
+            else:
+                room = Room(host=host, guest_can_pause=guest_can_pause,
+                            votes_to_skip=votes_to_skip)
+                room.save()
+                self.request.session['room_code'] = room.code
+                return Response(RoomSerializer(room).data, status=status.HTTP_201_CREATED)
+
+        return Response({'Bad Request': 'Invalid data...'}, status=status.HTTP_400_BAD_REQUEST)
+
+
+class UserInRoom(APIView):
+    def get(self, request, format=None):
+        if not self.request.session.exists(self.request.session.session_key):
+            self.request.session.create()
+
+        data = {
+            'code': self.request.session.get('room_code')
+        }
+        return JsonResponse(data, status=status.HTTP_200_OK)
+
+
+class LeaveRoom(APIView):
+    def post(self, request, format=None):
+        if 'room_code' in self.request.session:
+            self.request.session.pop('room_code')
+            host_id = self.request.session.session_key
+            room_results = Room.objects.filter(host=host_id)
+            if len(room_results) > 0:
+                room = room_results[0]
+                room.delete()
+
+        return Response({'Message': 'Success'}, status=status.HTTP_200_OK)
+
+
+class UpdateRoom(APIView):
+    serializer_class = UpdateRoomSerializer
+
+    def patch(self, request, format=None):
+        if not self.request.session.exists(self.request.session.session_key):
+            self.request.session.create()
+
+        serializer = self.serializer_class(data=request.data)
+        if serializer.is_valid():
+            guest_can_pause = serializer.data.get('guest_can_pause')
+            votes_to_skip = serializer.data.get('votes_to_skip')
+            code = serializer.data.get('code')
+
+            queryset = Room.objects.filter(code=code)
+            if not queryset.exists():
+                return Response({'msg': 'Room not found.'}, status=status.HTTP_404_NOT_FOUND)
+
+            room = queryset[0]
+            user_id = self.request.session.session_key
+            if room.host != user_id:
+                return Response({'msg': 'You are not the host of this room.'}, status=status.HTTP_403_FORBIDDEN)
+
+            room.guest_can_pause = guest_can_pause
+            room.votes_to_skip = votes_to_skip
+            room.save(update_fields=['guest_can_pause', 'votes_to_skip'])
+            return Response(RoomSerializer(room).data, status=status.HTTP_200_OK)
+
+        return Response({'Bad Request': "Invalid Data..."}, status=status.HTTP_400_BAD_REQUEST)

Tutorial 14/frontend/admin.py

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+from django.contrib import admin
+
+# Register your models here.

Tutorial 14/frontend/apps.py

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+from django.apps import AppConfig
+
+
+class FrontendConfig(AppConfig):
+    name = 'frontend'

Tutorial 14/frontend/babel.config.json

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+{
+  "presets": [
+    [
+      "@babel/preset-env",
+      {
+        "targets": {
+          "node": "10"
+        }
+      }
+    ],
+    "@babel/preset-react"
+  ],
+  "plugins": ["@babel/plugin-proposal-class-properties"]
+}

Tutorial 14/frontend/models.py

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+from django.db import models
+
+# Create your models here.