dithered images

still needs to be integrated with celery, but works for now

playlist/tasks.py

@@ -1,5 +1,8 @@
 from celery import shared_task
 from .models import Track
+from django.core.files import File
+from django.core.files.uploadedfile import InMemoryUploadedFile
+from django.core.files.base import ContentFile
 
 import os
 import dotenv
@@ -7,6 +10,8 @@ import dotenv
 import json
 from requests import get, post
 from requests.exceptions import ConnectionError
+from PIL import Image
+from io import BytesIO
 
 dotenv.load_dotenv()
 
@@ -52,3 +57,17 @@ def get_banter(id):
         track.banter_done = True
         track.save()
         return f"{track}: {e}"
+
+@shared_task
+def get_and_dither_image(url, instance, attribute):
+    """Expects a url, and a Django model cls with an ImageField attribute"""
+    print(f"Parsing {url} for {instance} with attribute {attribute}")
+    r = get(url)
+    print(r.content)
+    i = Image.open(BytesIO(r.content))
+    i = i.resize(size=(128, 128)).convert("P").quantize(colors=32)
+    buffer = BytesIO()
+    i.save(fp=buffer, format='PNG')
+    file = InMemoryUploadedFile(ContentFile(buffer.getvalue()), None, instance.name + ".png", "image/png", buffer.tell, "utf-8")
+    instance.image = file
+    instance.save()