F(backend): add public media derivatives pipeline

apps/users/models.py

@@ -5,6 +5,11 @@ from django.db import models
 import uuid
 from datetime import timedelta
 
+from core.media import (
+    delete_image_derivatives_by_name,
+    get_image_previous_name,
+    safe_process_public_image,
+)
 from core.models import BaseModel
 
 
@@ -95,6 +100,8 @@ class User(AbstractUser, BaseModel):
         self.save(update_fields=['password_reset_token', 'password_reset_token_expires_at'])
 
     def save(self, *args, **kwargs):
+        previous_image_name = get_image_previous_name(self, "profile_picture")
+        current_image_name = self.profile_picture.name if self.profile_picture else None
         send_verified_success = False
 
         if self.pk is not None:
@@ -104,6 +111,17 @@ class User(AbstractUser, BaseModel):
 
         super().save(*args, **kwargs)
 
+        if previous_image_name != current_image_name and previous_image_name:
+            delete_image_derivatives_by_name(
+                self.profile_picture.storage if self.profile_picture else None,
+                previous_image_name,
+                "profile_picture",
+                delete_original=True,
+            )
+
+        if previous_image_name != current_image_name and self.profile_picture:
+            safe_process_public_image(self.profile_picture, "profile_picture")
+
         if send_verified_success:
             try:
                 from apps.users.tasks import send_email_verified_success