Initial label printing integration

requirements.txt

@@ -1,3 +1,5 @@
+certifi==2017.4.17
+chardet==3.0.3
 Django==1.10.1
 git+https://github.com/djangonauts/django-hstore@61427e474cb2f4be8fdfce225d78a5330bc77eb0#egg=django-hstore
 git+https://github.com/informatic/django-tree@993cec827ed989d3c162698a739da95b9227604b#egg=django-tree
@@ -9,3 +11,5 @@ Pillow==3.3.1
 psycopg2==2.6.2
 djangorestframework-hstore==1.3
 pyldap==2.4.28
+requests==2.16.5
+urllib3==1.21.1

spejstore/settings.py

@@ -182,3 +182,5 @@ REST_FRAMEWORK = {
         'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly'
     ]
 }
+
+LABEL_API = 'http://label.waw.hackerspace.pl:5678'

storage/migrations/0004_auto_20170528_1945.py

@@ -0,0 +1,31 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.1 on 2017-05-28 19:45
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.utils.timezone
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('storage', '0003_auto_20170424_2002'),
+    ]
+
+    operations = [
+        migrations.RemoveField(
+            model_name='label',
+            name='revision',
+        ),
+        migrations.AddField(
+            model_name='label',
+            name='created',
+            field=models.DateTimeField(auto_now_add=True, default=django.utils.timezone.now),
+            preserve_default=False,
+        ),
+        migrations.AddField(
+            model_name='label',
+            name='style',
+            field=models.CharField(choices=[('basic_99012_v1', 'Basic Dymo 89x36mm label')], default='basic_99012_v1', max_length=32),
+        ),
+    ]

storage/models.py

@@ -1,13 +1,17 @@
 from __future__ import unicode_literals
 
+import uuid
+import re
+
 from django.db import models
+from django.conf import settings
 from django.contrib.auth.models import User
 from django_hstore import hstore
-import uuid
-
 from tree.fields import PathField
 from tree.models import TreeModelMixin
 
+import requests
+
 
 STATES = (
     ('present', 'Present'),
@@ -17,7 +21,6 @@ STATES = (
 )
 
 
-# Create your models here.
 class Category(models.Model):
     name = models.CharField(max_length=127)
 
@@ -53,6 +56,17 @@ class Item(models.Model, TreeModelMixin):
         from django.urls import reverse
         return reverse('item-display', kwargs={'pk': str(self.pk)})
 
+    def get_or_create_label(self, **kwargs):
+        defaults = {
+            'id': re.sub('[^A-Z0-9]', '', self.name.upper())[:16],
+            }
+
+        defaults.update(kwargs)
+
+        obj, created = self.labels.get_or_create(**kwargs, defaults=defaults)
+
+        return obj
+
     class Meta:
         ordering = ('path',)
 
@@ -65,4 +79,15 @@ class ItemImage(models.Model):
 class Label(models.Model):
     id = models.CharField(max_length=64, primary_key=True)
     item = models.ForeignKey(Item, related_name='labels')
-    revision = models.IntegerField()
+    style = models.CharField(max_length=32, choices=(
+        ('basic_99012_v1', 'Basic Dymo 89x36mm label'),
+        ), default='basic_99012_v1')
+    created = models.DateTimeField(auto_now_add=True, blank=True)
+
+    def __str__(self):
+        return self.id
+
+    def print(self):
+        resp = requests.post(
+            '{}/api/1/print/{}'.format(settings.LABEL_API, self.id))
+        resp.raise_for_status()

storage/serializers.py

@@ -12,4 +12,4 @@ class LabelSerializer(serializers.ModelSerializer):
     item = ItemSerializer()
     class Meta:
         model = Label
-        fields = ('id', 'item', 'revision')
+        fields = ('id', 'item', 'style')