Add serializers, views and viewsets in user app

user/serializers.py

@@ -0,0 +1,34 @@
+from rest_framework.serializers import ModelSerializer
+
+from .models import User
+
+
+class UserSerializer(ModelSerializer):
+    class Meta:
+        model = User
+        fields = (
+            "id",
+            "username",
+            "nickname",
+        )
+
+
+class UserCreateSerializer(ModelSerializer):
+    class Meta:
+        model = User
+        fields = (
+            "username",
+            "password",
+            "nickname",
+        )
+        extra_kwargs = {
+            "password": {"write_only": True},
+        }
+
+    def create(self, validated_data):
+        user = User.objects.create_user(
+            username=validated_data["username"],
+            password=validated_data["password"],
+            nickname=validated_data["nickname"],
+        )
+        return user

user/views.py

@@ -0,0 +1,26 @@
+from django.contrib.auth import authenticate
+from django.contrib.auth import login, logout
+
+from rest_framework.response import Response
+
+from .serializers import UserSerializer
+
+
+def login_view(request):
+    if request.method == "POST":
+        username = request.data["username"]
+        password = request.data["password"]
+        user = authenticate(request, username=username, password=password)
+        if user is not None:
+            login(request, user)
+            serializer = UserSerializer(user)
+            return Response(serializer.data)
+        else:
+            return Response(status=401)
+    else:
+        return Response(status=405)
+
+
+def logout_view(request):
+    logout(request)
+    return Response(status=204)

user/viewsets.py

@@ -0,0 +1,52 @@
+from django.contrib.auth import login
+
+from rest_framework.decorators import action
+from rest_framework.permissions import AllowAny, IsAdminUser, IsAuthenticated
+from rest_framework.response import Response
+from rest_framework.viewsets import ModelViewSet
+
+from core.mixins import ActionBasedMixin
+
+from market.serializers import PostSerializer
+from .models import User
+from .serializers import UserSerializer, UserCreateSerializer
+
+
+class UserViewset(ActionBasedMixin, ModelViewSet):
+    queryset = User.objects.all()
+    serializer_class = UserSerializer
+    serializer_class_map = {
+        "create": UserCreateSerializer,
+        "posts": PostSerializer,
+    }
+    permission_classes = [IsAdminUser]
+    permission_classes_map = {
+        "create": [AllowAny],
+        "me": [IsAuthenticated],
+        "posts": [IsAuthenticated],
+    }
+
+    @action(detail=True, methods=["GET"])
+    def posts(self, request, pk):
+        user = self.get_object()
+        queryset = user.posts.all()
+
+        page = self.paginate_queryset(queryset)
+        if page is not None:
+            serializer = self.get_serializer(page, many=True)
+            return self.get_paginated_response(serializer.data)
+
+        serializer = self.get_serializer(queryset, many=True)
+        return Response(serializer.data)
+
+    def create(self, request, *args, **kwargs):
+        serializer = UserCreateSerializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+        user = self.perform_create(serializer)
+        login(request, user)
+        return Response(serializer.data, status=201)
+
+    @action(detail=False, methods=["GET"])
+    def me(self, request):
+        serializer = self.get_serializer(request.user)
+        return Response(serializer.data)