Added Shop app with pricing for amiibo

amiibofindr/apps/amiibo/__init__.py

@@ -0,0 +1,7 @@
+# coding: utf-8
+
+# py3
+from __future__ import unicode_literals
+
+
+default_app_config = 'amiibofindr.apps.amiibo.apps.AmiiboAppConfig'

amiibofindr/apps/amiibo/admin.py

@@ -10,7 +10,7 @@ import reversion
 
 
 # amiibo
-from .models import Collection, Amiibo
+from .models import Collection, Amiibo, AmiiboPrice, AmiiboPriceHistory
 
 
 class ColectionResource(resources.ModelResource):
@@ -49,5 +49,14 @@ class AmiiboAdmin(ImportExportModelAdmin, reversion.VersionAdmin):
     box_image.allow_tags = True
 
 
+class AmiiboPriceAdmin(reversion.VersionAdmin):
+    pass
+
+class AmiiboPriceHistoryAdmin(admin.ModelAdmin):
+    pass
+
+
 admin.site.register(Collection, CollectionAdmin)
 admin.site.register(Amiibo, AmiiboAdmin)
+admin.site.register(AmiiboPrice, AmiiboPriceAdmin)
+admin.site.register(AmiiboPriceHistory, AmiiboPriceHistoryAdmin)

amiibofindr/apps/amiibo/apps.py

@@ -0,0 +1,31 @@
+# coding: utf-8
+
+# py3
+from __future__ import unicode_literals
+
+# django
+from django.apps import AppConfig
+from django.db.models.signals import pre_save, post_save
+
+# amiibo
+from .handlers import (
+    pre_check_price_change, post_check_price_change,
+    save_historical_price
+)
+from .signals import amiibo_price_changed
+
+
+class AmiiboAppConfig(AppConfig):
+    name = 'amiibofindr.apps.amiibo'
+
+    def ready(self):
+        AmiiboPrice = self.get_model('AmiiboPrice')
+
+        # pre_save.connect(pre_check_price_change,
+        #                  sender=AmiiboPrice)
+
+        post_save.connect(post_check_price_change,
+                          sender=AmiiboPrice)
+
+        amiibo_price_changed.connect(save_historical_price,
+                                     sender=AmiiboPrice)

amiibofindr/apps/amiibo/handlers.py

@@ -0,0 +1,31 @@
+# coding: utf-8
+
+# py3
+from __future__ import unicode_literals
+
+# python
+import copy
+
+# amiibo
+from .signals import amiibo_price_changed
+
+
+def save_historical_price(sender, instance, **kwargs):
+    old_price = kwargs.get('old_price')
+    new_price = kwargs.get('new_price')
+    instance.save_history(old_price, new_price)
+
+
+def pre_check_price_change(sender, instance, **kwargs):
+    instance.old_price = copy.deepcopy(instance.price)
+
+
+def post_check_price_change(sender, instance, created, **kwargs):
+    if instance.price != instance.old_price:
+        amiibo_price_changed.send(
+            sender=instance.__class__,
+            instance=instance,
+            amiibo=instance.amiibo,
+            old_price=instance.old_price,
+            new_price=instance.price
+        )

amiibofindr/apps/amiibo/migrations/0006_amiiboprice_amiibopricehistory.py

@@ -0,0 +1,43 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('shop', '0001_initial'),
+        ('amiibo', '0005_auto_20150616_2142'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='AmiiboPrice',
+            fields=[
+                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
+                ('price', models.DecimalField(max_digits=6, decimal_places=2)),
+                ('currency', models.CharField(default=b'EUR', max_length=3)),
+                ('date', models.DateTimeField(auto_now_add=True)),
+                ('amiibo', models.ForeignKey(to='amiibo.Amiibo')),
+                ('shop', models.ForeignKey(to='shop.Shop')),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+        migrations.CreateModel(
+            name='AmiiboPriceHistory',
+            fields=[
+                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
+                ('price', models.DecimalField(max_digits=6, decimal_places=2)),
+                ('currency', models.CharField(default=b'EUR', max_length=3)),
+                ('date', models.DateTimeField(auto_now_add=True)),
+                ('amiibo', models.ForeignKey(to='amiibo.Amiibo')),
+                ('shop', models.ForeignKey(to='shop.Shop')),
+            ],
+            options={
+                'abstract': False,
+            },
+        ),
+    ]

amiibofindr/apps/amiibo/migrations/0007_amiibopricehistory_diff.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('amiibo', '0006_amiiboprice_amiibopricehistory'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='amiibopricehistory',
+            name='diff',
+            field=models.DecimalField(default=0, max_digits=6, decimal_places=2),
+            preserve_default=False,
+        ),
+    ]

amiibofindr/apps/amiibo/models.py

@@ -87,3 +87,50 @@ class Amiibo(models.Model):
     @property
     def name(self):
         return self.name_eu
+
+
+class AmiiboPrice(models.Model):
+    amiibo = models.ForeignKey(Amiibo)
+    shop = models.ForeignKey('shop.Shop')
+    price = models.DecimalField(max_digits=6, decimal_places=2)
+    currency = models.CharField(default='EUR', max_length=3)
+    date = models.DateTimeField(auto_now_add=True)
+
+    def __init__(self, *args, **kwargs):
+        super(AmiiboPrice, self).__init__(*args, **kwargs)
+        self.old_price = self.price
+
+    def __unicode__(self):
+        return u'{} price for {}: {}{}'.format(
+            self.amiibo.name,
+            self.shop.name,
+            self.price, self.currency
+        )
+
+    def save_history(self, old_price, new_price):
+        history = AmiiboPriceHistory(
+            amiibo=self.amiibo,
+            shop_id=self.shop_id,
+            price=self.price,
+            currency=self.currency,
+            diff=new_price-old_price
+        )
+        return history.save()
+
+
+class AmiiboPriceHistory(models.Model):
+    amiibo = models.ForeignKey(Amiibo)
+    shop = models.ForeignKey('shop.Shop')
+    price = models.DecimalField(max_digits=6, decimal_places=2)
+    currency = models.CharField(default='EUR', max_length=3)
+    date = models.DateTimeField(auto_now_add=True)
+    diff = models.DecimalField(max_digits=6, decimal_places=2)
+
+    def __unicode__(self):
+        return u'{} price for {}: {}{} [{}{}] ({})'.format(
+            self.amiibo.name,
+            self.shop.name,
+            self.price, self.currency,
+            self.diff, self.currency,
+            self.date
+        )

amiibofindr/apps/amiibo/signals.py

@@ -0,0 +1,12 @@
+# coding: utf-8
+
+# py3
+from __future__ import unicode_literals
+
+# django
+from django import dispatch
+
+
+amiibo_price_changed = dispatch.Signal(
+    providing_args=["instance", "amiibo", "old_price", "new_price"]
+)

amiibofindr/apps/shop/admin.py

@@ -0,0 +1,16 @@
+# coding: utf-8
+
+# django
+from django.contrib import admin
+
+# third party
+import reversion
+
+# shop
+from amiibofindr.apps.shop.models import Shop
+
+
+class ShopAdmin(reversion.VersionAdmin):
+    pass
+
+admin.site.register(Shop, ShopAdmin)

amiibofindr/apps/shop/migrations/0001_initial.py

@@ -0,0 +1,23 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import models, migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Shop',
+            fields=[
+                ('id', models.AutoField(verbose_name='ID', serialize=False, auto_created=True, primary_key=True)),
+                ('name', models.CharField(max_length=64)),
+                ('slug', models.CharField(max_length=64)),
+                ('url', models.CharField(max_length=64)),
+                ('referer_id', models.CharField(max_length=64, null=True, blank=True)),
+            ],
+        ),
+    ]

amiibofindr/apps/shop/models.py

@@ -0,0 +1,17 @@
+# coding: utf-8
+
+# py3
+from __future__ import unicode_literals
+
+# django
+from django.db import models
+
+
+class Shop(models.Model):
+    name = models.CharField(max_length=64)
+    slug = models.CharField(max_length=64)
+    url = models.CharField(max_length=64)
+    referer_id = models.CharField(max_length=64, blank=True, null=True)
+
+    def __unicode__(self):
+        return self.name

amiibofindr/apps/shop/tests.py

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

amiibofindr/apps/shop/views.py

@@ -0,0 +1,3 @@
+from django.shortcuts import render
+
+# Create your views here.

amiibofindr/settings/base.py

@@ -45,6 +45,7 @@ INSTALLED_APPS = (
     # own apps
     'amiibofindr.apps.core',
     'amiibofindr.apps.amiibo',
+    'amiibofindr.apps.shop',
     'amiibofindr.apps.home',
 )