reduce storage usage by user banners

app/activitypub/util.py

@@ -374,7 +374,7 @@ def actor_json_to_model(activity_json, address, server):
         if user.avatar_id:
             make_image_sizes(user.avatar_id, 40, 250, 'users')
         if user.cover_id:
-            make_image_sizes(user.cover_id, 700, 1600, 'users')
+            make_image_sizes(user.cover_id, 878, None, 'users')
         return user
     elif activity_json['type'] == 'Group':
         if 'attributedTo' in activity_json:  # lemmy and mbin

app/community/util.py

@@ -366,13 +366,14 @@ def save_banner_file(banner_file, directory='communities') -> File:
             img_height = img.height
 
         # save a second, smaller, version as a thumbnail
-        img.thumbnail((700, 500))
+        img.thumbnail((878, 500))
         img.save(final_place_thumbnail, format="WebP", quality=93)
         thumbnail_width = img.width
         thumbnail_height = img.height
 
         file = File(file_path=final_place, file_name=new_filename + file_ext, alt_text=f'{directory} banner',
-                    width=img_width, height=img_height, thumbnail_width=thumbnail_width, thumbnail_height=thumbnail_height)
+                    width=img_width, height=img_height, thumbnail_path=final_place_thumbnail,
+                    thumbnail_width=thumbnail_width, thumbnail_height=thumbnail_height)
         db.session.add(file)
         return file
     else:

app/main/routes.py

@@ -1,3 +1,4 @@
+import os.path
 from datetime import datetime, timedelta
 from math import log
 from random import randint
@@ -248,10 +249,20 @@ def keyboard_shortcuts():
 
 @bp.route('/test')
 def test():
+    deleted = 0
+    for user in User.query.all():
+        if not user.is_local():
+            if user.cover_id:
+                file = user.cover
+                if file.file_path and file.thumbnail_path:
+                    if os.path.exists(file.file_path):
+                        os.unlink(file.file_path)
+                        deleted += 1
+                    file.file_path = ''
 
-    themes = theme_list()
+    db.session.commit()
 
-    return str(themes)
+    return str(deleted) + ' done'
 
     return current_app.config['SERVER_NAME']
 

app/models.py

@@ -433,11 +433,11 @@ class User(UserMixin, db.Model):
 
     def cover_image(self) -> str:
         if self.cover_id is not None:
-            if self.cover.file_path is not None:
+            if self.cover.thumbnail_path is not None:
-                if self.cover.file_path.startswith('app/'):
+                if self.cover.thumbnail_path.startswith('app/'):
-                    return self.cover.file_path.replace('app/', '/')
+                    return self.cover.thumbnail_path.replace('app/', '/')
                 else:
-                    return self.cover.file_path
+                    return self.cover.thumbnail_path
             if self.cover.source_url is not None:
                 if self.cover.source_url.startswith('app/'):
                     return self.cover.source_url.replace('app/', '/')

app/templates/post/_post_full.html

@@ -70,7 +70,7 @@
             {% if post.type == POST_TYPE_LINK and post.image_id and not (post.url and 'youtube.com' in post.url) %}
                 <div class="url_thumbnail">
                     <a href="{{ post.url }}" target="_blank" rel="nofollow ugc" class="post_link"><img src="{{ post.image.thumbnail_url() }}" alt="{{ post.image.alt_text if post.image.alt_text else post.title }}"
-                            width="{{ post.image.thumbnail_width }}" height="{{ post.image.thumbnail_height }}" /></a>
+                            width="{{ post.image.thumbnail_width }}" height="{{ post.image.thumbnail_height }}" loading="lazy" /></a>
                 </div>
             {% endif %}
             <p>{% if post.reports and current_user.is_authenticated and post.community.is_moderator(current_user) %}
@@ -88,12 +88,12 @@
             {% elif post.type == POST_TYPE_IMAGE %}
                 <div class="post_image">
                     <a href="{{ post.image.view_url() }}" target="_blank" class="post_link" rel="nofollow ugc"><img src="{{ post.image.view_url() }}" alt="{{ post.image.alt_text if post.image.alt_text else post.title }}"
-                            width="{{ post.image.width }}" height="{{ post.image.height }}" /></a>
+                            width="{{ post.image.width }}" height="{{ post.image.height }}" loading="lazy" /></a>
                 </div>
             {% else %}
                 {% if post.image_id and not (post.url and 'youtube.com' in post.url) %}
                         <a href="{{ post.image.view_url() }}" target="_blank" class="post_link" rel="nofollow ugc"><img src="{{ post.image.thumbnail_url() }}" alt="{{ post.image.alt_text if post.image.alt_text else post.title }}"
-                            width="{{ post.image.thumbnail_width }}" height="{{ post.image.thumbnail_height }}" /></a>
+                            width="{{ post.image.thumbnail_width }}" height="{{ post.image.thumbnail_height }}" loading="lazy" /></a>
                 {% endif %}
             {% endif %}
             <div class="post_body">