Feat/menu redo (#27)

* adding stats endpoint from API.

* removing end date and auto updating complete date

v1/menu/migrations/0010_auto_20190308_1254.py

@@ -0,0 +1,22 @@
+# Generated by Django 2.1.7 on 2019-03-08 12:54
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('menu', '0009_auto_20190301_1353'),
+    ]
+
+    operations = [
+        migrations.RenameField(
+            model_name='menuitem',
+            old_name='end_date',
+            new_name='complete_date',
+        ),
+        migrations.RemoveField(
+            model_name='menuitem',
+            name='all_day',
+        ),
+    ]

v1/menu/models.py

@@ -13,10 +13,9 @@ class MenuItem(models.Model):
     """
     author = models.ForeignKey(User, on_delete=models.CASCADE, null=True)
     recipe = models.ForeignKey(Recipe, on_delete=models.CASCADE, related_name='menu_recipe')
-    all_day = models.BooleanField(default=False, blank=True)
     complete = models.BooleanField(default=False, blank=True)
     start_date = models.DateTimeField(null=True, blank=True)
-    end_date = models.DateTimeField(null=True, blank=True)
+    complete_date = models.DateTimeField(null=True, blank=True)
 
     class Meta:
         ordering = ['start_date', 'id']

v1/menu/serializers.py

@@ -2,6 +2,8 @@
 # encoding: utf-8
 
 from rest_framework import serializers
+import pytz
+from datetime import datetime
 
 from v1.recipe.mixins import FieldLimiter
 from v1.recipe.serializers import MiniBrowseSerializer
@@ -22,10 +24,19 @@ class Meta:
             'author',
             'complete',
             'recipe',
-            'all_day',
             'start_date',
-            'end_date',
+            'complete_date',
             'recipe',
             'recipe_data',
         ]
         extra_kwargs = {'recipe': {'write_only': True}}
+
+    def create(self, validated_data):
+        if validated_data.get('complete'):
+            validated_data['complete_date'] = datetime.now(pytz.utc)
+        return super(MenuItemSerializer, self).create(validated_data)
+
+    def update(self, instance, validated_data):
+        if validated_data.get('complete') and not instance.complete:
+            validated_data['complete_date'] = datetime.now(pytz.utc)
+        return super(MenuItemSerializer, self).update(instance, validated_data)

v1/menu/urls.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # encoding: utf-8
 
-from django.conf.urls import url, include
+from django.urls import include, path
 from rest_framework.routers import DefaultRouter
 
 from . import views
@@ -11,5 +11,10 @@
 router.register(r'menu-item', views.MenuItemViewSet)
 
 urlpatterns = [
-    url('', include(router.urls)),
+    path('', include(router.urls)),
+    path(
+        'menu-stats/',
+        views.MenuStatsViewSet.as_view(),
+        name='menu_stats'
+    ),
 ]

v1/menu/views.py

@@ -1,8 +1,13 @@
 #!/usr/bin/env python
 # encoding: utf-8
 
-from rest_framework import viewsets
+from rest_framework import viewsets, views
+from rest_framework.permissions import IsAuthenticated
+from rest_framework.response import Response
+from django.db.models import Count, Max
+from django.core import serializers
 
+from v1.recipe.models import Recipe
 from .models import MenuItem
 from .serializers import MenuItemSerializer
 from .permissions import IsMenuItemOwner
@@ -16,10 +21,33 @@ class MenuItemViewSet(viewsets.ModelViewSet):
     queryset = MenuItem.objects.all()
     serializer_class = MenuItemSerializer
     permission_classes = (IsMenuItemOwner,)
-    filter_fields = ('recipe', 'start_date', 'end_date', 'complete')
+    filter_fields = ('recipe', 'start_date', 'complete_date', 'complete')
 
     def get_queryset(self):
         user = self.request.user
         if user and not user.is_anonymous:
             return MenuItem.objects.filter(author=user)
-        return MenuItem.objects.none()
+        return MenuItem.objects.none()
+
+
+class MenuStatsViewSet(views.APIView):
+    permission_classes = (IsAuthenticated,)
+
+    def get(self, request):
+        return Response(
+            Recipe.objects.annotate(
+                num_menuitems=Count('menu_recipe'),
+                last_made=Max('menu_recipe__complete_date')
+            ).filter(
+                num_menuitems__gte=1,
+                menu_recipe__complete=True
+            ).values(
+                'slug',
+                'title',
+                'num_menuitems',
+                'last_made',
+            ).order_by(
+                '-last_made',
+                'num_menuitems',
+            )
+        )