upload images for community icon and banner

app/__init__.py

@@ -18,7 +18,7 @@ from sqlalchemy_searchable import make_searchable
 from config import Config
 
 
-db = SQLAlchemy(session_options={"autoflush": False})
+db = SQLAlchemy(session_options={"autoflush": False})  # engine_options={'pool_size': 5, 'max_overflow': 10}
 migrate = Migrate()
 login = LoginManager()
 login.login_view = 'auth.login'

app/activitypub/routes.py

@@ -14,7 +14,7 @@ from app.activitypub.util import public_key, users_total, active_half_year, acti
     post_to_activity, find_actor_or_create, default_context, instance_blocked, find_reply_parent, find_liked_object, \
     lemmy_site_data, instance_weight
 from app.utils import gibberish, get_setting, is_image_url, allowlist_html, html_to_markdown, render_template, \
-    domain_from_url, markdown_to_html, community_membership
+    domain_from_url, markdown_to_html, community_membership, ap_datetime
 import werkzeug.exceptions
 
 INBOX = []
@@ -159,12 +159,17 @@ def user_profile(actor):
                             "endpoints": {
                                 "sharedInbox": f"https://{server}/inbox"
                             },
-                            "published": user.created.isoformat() + '+00:00',
+                            "published": ap_datetime(user.created),
                         }
             if user.avatar_id is not None:
                 actor_data["icon"] = {
                     "type": "Image",
-                    "url": f"https://{server}/avatars/{user.avatar.file_path}"
+                    "url": f"https://{current_app.config['SERVER_NAME']}{user.avatar_image()}"
+                }
+            if user.cover_id is not None:
+                actor_data["image"] = {
+                    "type": "Image",
+                    "url": f"https://{current_app.config['SERVER_NAME']}{user.cover_image()}"
                 }
             if user.about:
                 actor_data['source'] = {
@@ -219,13 +224,18 @@ def community_profile(actor):
                 "endpoints": {
                     "sharedInbox": f"https://{server}/inbox"
                 },
-                "published": community.created_at.isoformat() + '+00:00',
+                "published": ap_datetime(community.created_at),
-                "updated": community.last_active.isoformat() + '+00:00',
+                "updated": ap_datetime(community.last_active),
             }
             if community.icon_id is not None:
                 actor_data["icon"] = {
                     "type": "Image",
-                    "url": f"https://{server}/avatars/{community.icon.file_path}"
+                    "url": f"https://{current_app.config['SERVER_NAME']}{community.icon_image()}"
+                }
+            if community.image_id is not None:
+                actor_data["image"] = {
+                    "type": "Image",
+                    "url": f"https://{current_app.config['SERVER_NAME']}{community.header_image()}"
                 }
             resp = jsonify(actor_data)
             resp.content_type = 'application/activity+json'

app/community/forms.py

@@ -8,8 +8,10 @@ from app.utils import domain_from_url
 
 class AddLocalCommunity(FlaskForm):
     community_name = StringField(_l('Name'), validators=[DataRequired()])
-    url = StringField(_l('Url'), render_kw={'placeholder': '/c/'})
+    url = StringField(_l('Url'))
     description = TextAreaField(_l('Description'))
+    icon_file = FileField(_('Icon image'))
+    banner_file = FileField(_('Banner image'))
     rules = TextAreaField(_l('Rules'))
     nsfw = BooleanField('18+ NSFW')
     submit = SubmitField(_l('Create'))

app/community/routes.py

@@ -9,14 +9,14 @@ from app.activitypub.signature import RsaKeys, HttpSignature
 from app.activitypub.util import default_context
 from app.community.forms import SearchRemoteCommunity, AddLocalCommunity, CreatePostForm
 from app.community.util import search_for_community, community_url_exists, actor_to_community, \
-    ensure_directory_exists, opengraph_parse, url_to_thumbnail_file, save_post
+    ensure_directory_exists, opengraph_parse, url_to_thumbnail_file, save_post, save_icon_file, save_banner_file
 from app.constants import SUBSCRIPTION_MEMBER, SUBSCRIPTION_OWNER, POST_TYPE_LINK, POST_TYPE_ARTICLE, POST_TYPE_IMAGE, \
     SUBSCRIPTION_PENDING
 from app.models import User, Community, CommunityMember, CommunityJoinRequest, CommunityBan, Post, \
     File, PostVote
 from app.community import bp
 from app.utils import get_setting, render_template, allowlist_html, markdown_to_html, validation_required, \
-    shorten_string, markdown_to_text, domain_from_url, validate_image, gibberish, community_membership
+    shorten_string, markdown_to_text, domain_from_url, validate_image, gibberish, community_membership, ap_datetime
 import os
 from PIL import Image, ImageOps
 from datetime import datetime
@@ -39,6 +39,16 @@ def add_local():
                               public_key=public_key,
                               ap_profile_id=current_app.config['SERVER_NAME'] + '/c/' + form.url.data,
                               subscriptions_count=1)
+        icon_file = request.files['icon_file']
+        if icon_file and icon_file.filename != '':
+            file = save_icon_file(icon_file)
+            if file:
+                community.icon = file
+        banner_file = request.files['banner_file']
+        if banner_file and banner_file.filename != '':
+            file = save_banner_file(banner_file)
+            if file:
+                community.image = file
         db.session.add(community)
         db.session.commit()
         membership = CommunityMember(user_id=current_user.id, community_id=community.id, is_moderator=True,
@@ -228,7 +238,7 @@ def add_post(actor):
         form.nsfw.render_kw = {'disabled': True}
     if get_setting('allow_nsfl', False) is False:
         form.nsfl.render_kw = {'disabled': True}
-    images_disabled = 'disabled' if not get_setting('allow_local_image_posts', True) else ''
+    images_disabled = 'disabled' if not get_setting('allow_local_image_posts', True) else ''    # bug: this will disable posting of images to *remote* hosts too
 
     form.communities.choices = [(c.id, c.display_name()) for c in current_user.communities()]
 
@@ -239,10 +249,58 @@ def add_post(actor):
         community.last_active = datetime.utcnow()
         db.session.commit()
 
+        if community.ap_id:  # this is a remote community - send the post to the instance that hosts it
+            page = {
+                'type': 'Page',
+                'id': f"https://{current_app.config['SERVER_NAME']}/post/{post.id}",
+                'attributedTo': current_user.ap_profile_id,
+                'to': [
+                    community.ap_profile_id,
+                    'https://www.w3.org/ns/activitystreams#Public'
+                ],
+                'name': post.title,
+                'cc': [],
+                'content': post.body_html,
+                'mediaType': 'text/html',
+                'source': {
+                    'content': post.body,
+                    'mediaType': 'text/markdown'
+                },
+                'attachment': [],
+                'commentsEnabled': post.comments_enabled,
+                'sensitive': post.nsfw,
+                'nsfl': post.nsfl,
+                'published': ap_datetime(datetime.utcnow()),
+                'audience': community.ap_profile_id
+            }
+            create = {
+                "id": f"https://{current_app.config['SERVER_NAME']}/activities/create/{gibberish(15)}",
+                "actor": current_user.ap_profile_id,
+                "to": [
+                    "https://www.w3.org/ns/activitystreams#Public"
+                ],
+                "cc": [
+                    community.ap_profile_id
+                ],
+                "type": "Create",
+                "audience": community.ap_profile_id,
+                "object": page
+            }
+            try:
+                message = HttpSignature.signed_request(community.ap_inbox_url, create, current_user.private_key,
+                                                       current_user.ap_profile_id + '#main-key')
+                if message.status_code == 200:
+                    flash('Your post has been sent to ' + community.title)
+                else:
+                    flash('Response status code was not 200', 'warning')
+                    current_app.logger.error('Response code for post attempt was ' +
+                                             str(message.status_code) + ' ' + message.text)
+            except Exception as ex:
+                flash('Failed to send request to subscribe: ' + str(ex), 'error')
+                current_app.logger.error("Exception while trying to subscribe" + str(ex))
+        else:   # local community - send post out to followers
+            ...
 
-        # todo: federate post creation out to followers
-
-        flash('Post has been added')
         return redirect(f"/c/{community.link()}")
     else:
         form.communities.data = community.id

app/community/util.py

@@ -16,6 +16,8 @@ import os
 from opengraph_parse import parse_page
 
 
+allowed_extensions = ['.gif', '.jpg', '.jpeg', '.png', '.webp', '.heic']
+
 def search_for_community(address: str):
     if address.startswith('!'):
         name, server = address[1:].split('@')
@@ -176,7 +178,6 @@ def save_post(form, post):
                             db.session.add(file)
 
     elif form.type.data == 'image':
-        allowed_extensions = ['.gif', '.jpg', '.jpeg', '.png', '.webp', '.heic']
         post.title = form.image_title.data
         post.type = POST_TYPE_IMAGE
         uploaded_file = request.files['image_file']
@@ -185,15 +186,18 @@ def save_post(form, post):
                 remove_old_file(post.image_id)
                 post.image_id = None
 
+            # check if this is an allowed type of file
             file_ext = os.path.splitext(uploaded_file.filename)[1]
             if file_ext.lower() not in allowed_extensions or file_ext != validate_image(
                     uploaded_file.stream):
                 abort(400)
             new_filename = gibberish(15)
 
+            # set up the storage directory
             directory = 'app/static/media/posts/' + new_filename[0:2] + '/' + new_filename[2:4]
             ensure_directory_exists(directory)
 
+            # save the file
             final_place = os.path.join(directory, new_filename + file_ext)
             final_place_thumbnail = os.path.join(directory, new_filename + '_thumbnail.webp')
             uploaded_file.save(final_place)
@@ -203,14 +207,15 @@ def save_post(form, post):
 
             # resize if necessary
             img = Image.open(final_place)
+            img = ImageOps.exif_transpose(img)
             img_width = img.width
             img_height = img.height
-            img = ImageOps.exif_transpose(img)
             if img.width > 2000 or img.height > 2000:
                 img.thumbnail((2000, 2000))
                 img.save(final_place)
                 img_width = img.width
                 img_height = img.height
+            # save a second, smaller, version as a thumbnail
             img.thumbnail((256, 256))
             img.save(final_place_thumbnail, format="WebP", quality=93)
             thumbnail_width = img.width
@@ -237,3 +242,83 @@ def save_post(form, post):
 def remove_old_file(file_id):
     remove_file = File.query.get(file_id)
     remove_file.delete_from_disk()
+
+
+def save_icon_file(icon_file) -> File:
+    # check if this is an allowed type of file
+    file_ext = os.path.splitext(icon_file.filename)[1]
+    if file_ext.lower() not in allowed_extensions or file_ext != validate_image(
+            icon_file.stream):
+        abort(400)
+    new_filename = gibberish(15)
+
+    # set up the storage directory
+    directory = 'app/static/media/communities/' + new_filename[0:2] + '/' + new_filename[2:4]
+    ensure_directory_exists(directory)
+
+    # save the file
+    final_place = os.path.join(directory, new_filename + file_ext)
+    final_place_thumbnail = os.path.join(directory, new_filename + '_thumbnail.webp')
+    icon_file.save(final_place)
+
+    if file_ext.lower() == '.heic':
+        register_heif_opener()
+
+    # resize if necessary
+    img = Image.open(final_place)
+    img = ImageOps.exif_transpose(img)
+    img_width = img.width
+    img_height = img.height
+    if img.width > 200 or img.height > 200:
+        img.thumbnail((200, 200))
+        img.save(final_place)
+        img_width = img.width
+        img_height = img.height
+    # save a second, smaller, version as a thumbnail
+    img.thumbnail((32, 32))
+    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='community icon',
+                width=img_width, height=img_height, thumbnail_width=thumbnail_width,
+                thumbnail_height=thumbnail_height, thumbnail_path=final_place_thumbnail)
+    db.session.add(file)
+    return file
+
+
+def save_banner_file(banner_file) -> File:
+    # check if this is an allowed type of file
+    file_ext = os.path.splitext(banner_file.filename)[1]
+    if file_ext.lower() not in allowed_extensions or file_ext != validate_image(
+            banner_file.stream):
+        abort(400)
+    new_filename = gibberish(15)
+
+    # set up the storage directory
+    directory = 'app/static/media/communities/' + new_filename[0:2] + '/' + new_filename[2:4]
+    ensure_directory_exists(directory)
+
+    # save the file
+    final_place = os.path.join(directory, new_filename + file_ext)
+    final_place_thumbnail = os.path.join(directory, new_filename + '_thumbnail.webp')
+    banner_file.save(final_place)
+
+    if file_ext.lower() == '.heic':
+        register_heif_opener()
+
+    # resize if necessary
+    img = Image.open(final_place)
+    img = ImageOps.exif_transpose(img)
+    img_width = img.width
+    img_height = img.height
+    if img.width > 1000 or img.height > 300:
+        img.thumbnail((1000, 300))
+        img.save(final_place)
+        img_width = img.width
+        img_height = img.height
+
+    file = File(file_path=final_place, file_name=new_filename + file_ext, alt_text='community banner',
+                width=img_width, height=img_height)
+    db.session.add(file)
+    return file

app/models.py

@@ -103,21 +103,45 @@ class Community(db.Model):
     image = db.relationship('File', foreign_keys=[image_id], single_parent=True, cascade="all, delete-orphan")
 
     @cache.memoize(timeout=500)
-    def icon_image(self) -> str:
+    def icon_image(self, size='default') -> str:
         if self.icon_id is not None:
-            if self.icon.file_path is not None:
+            if size == 'default':
-                return self.icon.file_path
+                if self.icon.file_path is not None:
-            if self.icon.source_url is not None:
+                    if self.icon.file_path.startswith('app/'):
-                return self.icon.source_url
+                        return self.icon.file_path.replace('app/', '/')
+                    else:
+                        return self.icon.file_path
+                if self.icon.source_url is not None:
+                    if self.icon.source_url.startswith('app/'):
+                        return self.icon.source_url.replace('app/', '/')
+                    else:
+                        return self.icon.source_url
+            elif size == 'tiny':
+                if self.icon.thumbnail_path is not None:
+                    if self.icon.thumbnail_path.startswith('app/'):
+                        return self.icon.thumbnail_path.replace('app/', '/')
+                    else:
+                        return self.icon.thumbnail_path
+                if self.icon.source_url is not None:
+                    if self.icon.source_url.startswith('app/'):
+                        return self.icon.source_url.replace('app/', '/')
+                    else:
+                        return self.icon.source_url
         return ''
 
     @cache.memoize(timeout=500)
     def header_image(self) -> str:
         if self.image_id is not None:
             if self.image.file_path is not None:
-                return self.image.file_path
+                if self.image.file_path.startswith('app/'):
+                    return self.image.file_path.replace('app/', '/')
+                else:
+                    return self.image.file_path
             if self.image.source_url is not None:
-                return self.image.source_url
+                if self.image.source_url.startswith('app/'):
+                    return self.image.source_url.replace('app/', '/')
+                else:
+                    return self.image.source_url
         return ''
 
     def display_name(self) -> str:
@@ -143,6 +167,9 @@ class Community(db.Model):
     def is_moderator(self):
         return any(moderator.user_id == current_user.id for moderator in self.moderators())
 
+    def profile_id(self):
+        return self.ap_profile_id if self.ap_profile_id else f"https://{current_app.config['SERVER_NAME']}/c/{self.name}"
+
 
 user_role = db.Table('user_role',
     db.Column('user_id', db.Integer, db.ForeignKey('user.id')),
@@ -232,18 +259,30 @@ class User(UserMixin, db.Model):
     def avatar_image(self) -> str:
         if self.avatar_id is not None:
             if self.avatar.file_path is not None:
-                return self.avatar.file_path
+                if self.avatar.file_path.startswith('app/'):
+                    return self.avatar.file_path.replace('app/', '/')
+                else:
+                    return self.avatar.file_path
             if self.avatar.source_url is not None:
-                return self.avatar.source_url
+                if self.avatar.source_url.startswith('app/'):
+                    return self.avatar.source_url.replace('app/', '/')
+                else:
+                    return self.avatar.source_url
         return ''
 
     @cache.memoize(timeout=500)
     def cover_image(self) -> str:
         if self.cover_id is not None:
             if self.cover.file_path is not None:
-                return self.cover.file_path
+                if self.cover.file_path.startswith('app/'):
+                    return self.cover.file_path.replace('app/', '/')
+                else:
+                    return self.cover.file_path
             if self.cover.source_url is not None:
-                return self.cover.source_url
+                if self.cover.source_url.startswith('app/'):
+                    return self.cover.source_url.replace('app/', '/')
+                else:
+                    return self.cover.source_url
         return ''
 
     def link(self) -> str:
@@ -302,7 +341,7 @@ class User(UserMixin, db.Model):
             join(CommunityMember).filter(CommunityMember.is_banned == False).all()
 
     def profile_id(self):
-        return self.ap_profile_id if self.ap_profile_id else f"{self.user_name}@{current_app.config['SERVER_NAME']}"
+        return self.ap_profile_id if self.ap_profile_id else f"https://{current_app.config['SERVER_NAME']}/u/{self.user_name}"
 
     def created_recently(self):
         return self.created and self.created > datetime.utcnow() - timedelta(days=7)
@@ -413,6 +452,9 @@ class Post(db.Model):
             if vpos != -1:
                 return self.url[vpos + 2:vpos + 13]
 
+    def profile_id(self):
+        return f"https://{current_app.config['SERVER_NAME']}/post/{self.id}"
+
 
 class PostReply(db.Model):
     query_class = FullTextSearchQuery
@@ -452,6 +494,9 @@ class PostReply(db.Model):
     def get_by_ap_id(cls, ap_id):
         return cls.query.filter_by(ap_id=ap_id).first()
 
+    def profile_id(self):
+        return f"https://{current_app.config['SERVER_NAME']}/comment/{self.id}"
+
 
 class Domain(db.Model):
     id = db.Column(db.Integer, primary_key=True)

app/static/structure.css

@@ -569,6 +569,12 @@ fieldset legend {
   border-top: solid 1px #ddd;
 }
 
+#add_local_community_form #url {
+  width: 297px;
+  display: inline-block;
+  padding-left: 3px;
+}
+
 .table tr th {
   vertical-align: middle;
 }

app/static/structure.scss

@@ -317,6 +317,14 @@ nav, etc which are used site-wide */
   }
 }
 
+#add_local_community_form {
+  #url {
+    width: 297px;
+    display: inline-block;
+    padding-left: 3px;
+  }
+}
+
 .table {
   tr th {
     vertical-align: middle;

app/static/styles.css

@@ -470,6 +470,12 @@ nav.navbar {
   margin-bottom: 15px;
 }
 
+.field_hint {
+  margin-top: -15px;
+  display: block;
+  margin-bottom: 10px;
+}
+
 @media (prefers-color-scheme: dark) {
   body {
     background-color: #777;

app/static/styles.scss

@@ -191,6 +191,12 @@ nav.navbar {
   }
 }
 
+.field_hint {
+  margin-top: -15px;
+  display: block;
+  margin-bottom: 10px;
+}
+
 @media (prefers-color-scheme: dark) {
   body {
     background-color: $dark-grey;

app/templates/community/add_local.html

@@ -1,5 +1,5 @@
 {% extends "base.html" %}
-{% from 'bootstrap/form.html' import render_form %}
+{% from 'bootstrap/form.html' import render_field %}
 
 {% block app_content %}
     <div class="row">
@@ -7,7 +7,24 @@
             <div class="card mt-5">
                 <div class="card-body p-6">
                     <div class="card-title">{{ _('Create community') }}</div>
-                    {{ render_form(form) }}
+                    <form method="post" enctype="multipart/form-data" id="add_local_community_form">
+                        {{ form.csrf_token() }}
+                        {{ render_field(form.community_name) }}
+                        <div class="form-group">{{ form.url.label(class_="form-control-label required") }}
+                            /c/{{ form.url(class_="form-control", maxlength=255) }}
+                            {% for error in form.url.errors %}
+                            <span style="color: red;">[{{ error }}]</span>
+                            {% endfor %}
+                        </div>
+                        {{ render_field(form.description) }}
+                        {{ render_field(form.icon_file) }}
+                        <small class="field_hint">Provide a square image that looks good when small.</small>
+                        {{ render_field(form.banner_file) }}
+                        <small class="field_hint">Provide a wide image - letterbox orientation.</small>
+                        {{ render_field(form.rules) }}
+                        {{ render_field(form.nsfw) }}
+                        {{ render_field(form.submit) }}
+                    </form>
                 </div>
             </div>
         </div>

app/templates/community/add_post.html

@@ -1,5 +1,5 @@
 {% extends "base.html" %}
-{% from 'bootstrap/form.html' import render_form, render_field %}
+{% from 'bootstrap/form.html' import render_field %}
 
 {% block app_content %}
 <div class="row">

app/templates/list_communities.html

@@ -44,7 +44,7 @@
             <tbody>
                 {% for community in communities %}
                     <tr class="">
-                        <td width="46"><a href="/c/{{ community.link() }}"><img src="{{ community.icon_image() }}" class="community_icon rounded-circle" loading="lazy" /></a></td>
+                        <td width="46"><a href="/c/{{ community.link() }}"><img src="{{ community.icon_image('tiny') }}" class="community_icon rounded-circle" loading="lazy" /></a></td>
                         <td scope="row" class="pl-0"><a href="/c/{{ community.link() }}">{{ community.display_name() }}</a></td>
                         <td>{{ community.post_count }}</td>
                         <td>{{ community.post_reply_count }}</td>

app/utils.py

@@ -1,4 +1,6 @@
 import random
+from datetime import datetime
+
 import markdown2
 import math
 from urllib.parse import urlparse
@@ -198,7 +200,7 @@ def user_access(permission: str, user_id: int) -> bool:
     return has_access is not None
 
 
-@cache.memoize(timeout=10)
+@cache.memoize(timeout=500)
 def community_membership(user: User, community: Community) -> int:
     # @cache.memoize works with User.subscribed but cache.delete_memoized does not, making it bad to use on class methods.
     # however cache.memoize and cache.delete_memoized works fine with normal functions
@@ -261,3 +263,8 @@ def back(default_url):
 
     # If referrer is not available or is the same as the current request URL, redirect to the default URL
     return redirect(default_url)
+
+
+# format a datetime in a way that is used in ActivityPub
+def ap_datetime(date_time: datetime) -> str:
+    return date_time.isoformat() + '+00:00'