feat(backend): Switch Code to UUID & Add QR_Code.png generation to sa…

…ve function for codes

backend/Pipfile

@@ -6,6 +6,7 @@ name = "pypi"
 [packages]
 django = "3.2.4"
 django-cors-headers = "*"
+qrcode = {extras = ["pil"], version = "*"}
 
 [dev-packages]
 

backend/dpt_app/trails/migrations/0009_code_image.py

@@ -0,0 +1,18 @@
+# Generated by Django 3.2.5 on 2021-07-22 19:42
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('trails', '0008_player_action_points'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='code',
+            name='image',
+            field=models.ImageField(blank=True, upload_to='media/'),
+        ),
+    ]

backend/dpt_app/trails/migrations/0010_auto_20210723_0843.py

@@ -0,0 +1,24 @@
+# Generated by Django 3.2.5 on 2021-07-23 08:43
+
+from django.db import migrations, models
+import uuid
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('trails', '0009_code_image'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='code',
+            name='uuid',
+            field=models.UUIDField(default=uuid.uuid4, editable=False, unique=True),
+        ),
+        migrations.AlterField(
+            model_name='code',
+            name='image',
+            field=models.ImageField(blank=True, editable=False, upload_to='media/'),
+        ),
+    ]

backend/dpt_app/trails/qr_models.py

@@ -1,5 +1,8 @@
+import qrcode
+import uuid
 from .enums import ParameterType, CharacterType, ActionType
 from django.db import models
+from django.core.files import File
 
 
 class Code(models.Model):
@@ -9,15 +12,27 @@ class Code(models.Model):
         blank=True
     )
     one_shot = models.BooleanField(default=False)
+    uuid = models.UUIDField(default=uuid.uuid4, unique=True)
+    image = models.ImageField(upload_to="media/", blank=True)
 
     def __str__(self):
         ret = ""
         if len(self.name) > 0:
             ret += self.name + ": "
         ret += "One-Shot: {0}, ".format(str(self.one_shot))
         ret += str([action.label() for action in self.actions.all()])
+        ret += " UUID: "+str(self.uuid)
         return ret
 
+    def save(self, *args, **kwargs):
+        img = qrcode.make("http://localhost:8080/code/"+str(self.uuid))
+        file_name = "{0}.png".format(str(self.name))
+        file_path = "/tmp/{0}".format(file_name)
+        img.save(file_path)
+        self.image.delete(save=False)
+        self.image = File(open(file_path, 'rb'), name=file_name)
+        super(Code, self).save(*args, **kwargs)
+
 
 class Action(models.Model):
     code = models.ForeignKey(

backend/dpt_app/trails/urls.py

@@ -6,5 +6,5 @@
     path('', views.index, name='index'),
     path('games/<str:gameId>/clock', views.clock, name='clock'),
     path('games/<str:gameId>/parameters', views.parameter, name='parameter'),
-    path('games/<str:gameId>/codes/<int:codeId>', views.code, name='code'),
+    path('games/<str:gameId>/codes/<uuid:codeId>', views.code, name='code'),
 ]

backend/dpt_app/trails/views.py

@@ -124,7 +124,7 @@ def has_valid_bearer(bearer, game):
     calcTimepassingParameters(game)
 
     try:
-        code = Code.objects.get(pk=codeId)
+        code = Code.objects.get(uuid=codeId)
     except Code.DoesNotExist:
         return JsonResponse({"Errors": [
             {