diff --git a/server/app.py b/server/app.py
index b9ca73c..3c0f67e 100644
--- a/server/app.py
+++ b/server/app.py
@@ -1,5 +1,5 @@
 ####
-## Imports
+# Imports
 ####
 
 from __future__ import annotations
@@ -11,7 +11,16 @@ import logging
 import os
 import random
 from urllib.parse import urlencode, quote_plus
-from typing import Any, Callable, Dict, Iterable, List, Optional, Set, Union
+from typing import (
+    Any,
+    Callable,
+    Dict,
+    Iterable,
+    List,
+    Optional,
+    Set,
+    Union,
+)
 
 from flask import Flask, jsonify, make_response, request, redirect
 from flask.templating import render_template
@@ -20,35 +29,48 @@ from pony.flask import Pony
 from pony import orm
 
 from entertainment_decider import common
-from entertainment_decider.models import PreferenceScore, Tag, db, MediaCollection, MediaCollectionLink, MediaElement, generate_preference_list
-from entertainment_decider.extractors.collection import collection_extract_uri, collection_update
+from entertainment_decider.models import (
+    PreferenceScore,
+    Tag,
+    db,
+    MediaCollection,
+    MediaCollectionLink,
+    MediaElement,
+    generate_preference_list,
+)
+from entertainment_decider.extractors.collection import (
+    collection_extract_uri,
+    collection_update,
+)
 from entertainment_decider.extractors.media import media_extract_uri
 
 
 ####
-## Logging Config
+# Logging Config
 ####
 
 
-logging.basicConfig(format = "%(asctime)s === %(message)s", level=logging.DEBUG)
+logging.basicConfig(format="%(asctime)s === %(message)s", level=logging.DEBUG)
 
 
 ####
-## Flask Config
+# Flask Config
 ####
 
 
 flask_app = Flask(__name__)
-flask_app.config.update(dict(
-    CELERY = dict(
-    ),
-    DEBUG = True,
-    PONY = dict(
-        provider = "sqlite",
-        filename = "./db.sqlite",
-        create_db = True,
+flask_app.config.update(
+    dict(
+        CELERY=dict(),
+        DEBUG=True,
+        PONY=dict(
+            provider="sqlite",
+            filename="./db.sqlite",
+            create_db=True,
+        )
     )
-))
+)
+
 
 def environ_bool(value: Union[str, bool]) -> bool:
     if type(value) == bool:
@@ -60,33 +82,43 @@ ConfigSingleTranslator = Callable[[Any], Any]
 ConfigTranslatorIterable = Iterable[ConfigSingleTranslator]
 ConfigTranslatorCreator = Callable[[str], ConfigTranslatorIterable]
 
-def config_suffixer(setter: ConfigKeySetter, prefix: str, lower: bool = True) -> ConfigTranslatorCreator:
+
+def config_suffixer(
+    setter: ConfigKeySetter, prefix: str, lower: bool = True
+) -> ConfigTranslatorCreator:
     def creator(key: str):
         if not key.startswith(prefix):
             raise Exception(f"Environment key {key!r} is missing suffix {prefix!r}")
-        new_key = key[len(prefix):]
+        new_key = key[len(prefix) :]
         new_key = new_key.lower() if lower else new_key
-        return (
-            partial(setter, new_key)
-        )
+        return (partial(setter, new_key),)
+
     return creator
 
+
 def celery_config_setter(key: str, val: Any):
     flask_app.config["CELERY"][key] = val
 
+
 celery_config_same = config_suffixer(celery_config_setter, "CELERY_")
 
+
 def flask_config_setter(key: str, val: Any):
     flask_app.config[key] = val
 
+
 flask_config_same = config_suffixer(flask_config_setter, "FLASK_", lower=False)
 
+
 def pony_config_setter(key: str, val: Any):
     flask_app.config["PONY"][key] = val
 
+
 pony_config_same = config_suffixer(pony_config_setter, "PONY_")
 
-CONFIG_TRANSLATE_TABLE: Dict[str, Union[ConfigTranslatorIterable, ConfigTranslatorCreator]] = {
+CONFIG_TRANSLATE_TABLE: Dict[
+    str, Union[ConfigTranslatorIterable, ConfigTranslatorCreator]
+] = {
     "CELERY_BROKER_URL": celery_config_same,
     "CELERY_RESULT_BACKEND": celery_config_same,
     "FLASK_DEBUG": (
@@ -120,7 +152,7 @@ for key, val in os.environ.items():
 
 
 ####
-## Pony init
+# Pony init
 ####
 
 
@@ -131,7 +163,7 @@ Pony(flask_app)
 
 
 ####
-## Return filters
+# Return filters
 ####
 
 
@@ -144,14 +176,18 @@ def as_link(uri: str):
     uri = Markup.escape(uri)
     return Markup(f'<a href="{uri}">{uri}</a>')
 
+
 @flask_app.template_filter()
 def tenary(b: bool, true_str: str, false_str: str) -> str:
     return true_str if b else false_str
 
+
 TIMEDELTA_FORMAT = (
     datetime.timedelta(hours=1),
     datetime.timedelta(minutes=1),
 )
+
+
 @flask_app.template_filter()
 def timedelta(seconds: int) -> str:
     delta = datetime.timedelta(seconds=seconds)
@@ -169,7 +205,7 @@ def timedelta(seconds: int) -> str:
 
 
 ####
-## Routes
+# Routes
 ####
 
 
@@ -179,7 +215,9 @@ def dashboard():
     pinned_limit = 10
     media_limit = 10
     # for links from pinned collections
-    pinned_collections: Iterable[MediaCollection] = orm.select(m for m in MediaCollection if m.pinned and not m.ignored).order_by(MediaCollection.release_date, MediaCollection.title, MediaCollection.id)
+    pinned_collections: Iterable[MediaCollection] = orm.select(
+        m for m in MediaCollection if m.pinned and not m.ignored
+    ).order_by(MediaCollection.release_date, MediaCollection.title, MediaCollection.id)
     links_from_pinned_collections: List[MediaCollectionLink] = list()
     episodes_from_pinned_collections: Set[MediaElement] = set()
     for coll in pinned_collections:
@@ -224,9 +262,16 @@ def list_collections_with_unwatched():
 
 @flask_app.route("/collection/pinned")
 def list_pinned_collection():
-    collection_list: Iterable[MediaCollection] = orm.select(c for c in MediaCollection if c.pinned).order_by(orm.desc(MediaCollection.release_date), MediaCollection.title, MediaCollection.id)
+    collection_list: Iterable[MediaCollection] = orm.select(
+        c for c in MediaCollection if c.pinned
+    ).order_by(
+        orm.desc(MediaCollection.release_date),
+        MediaCollection.title,
+        MediaCollection.id,
+    )
     return render_template("collection_list.htm", collection_list=collection_list)
 
+
 @flask_app.route("/collection/<int:collection_id>")
 def show_collection(collection_id):
     collection: MediaCollection = MediaCollection.get(id=collection_id)
@@ -238,6 +283,7 @@ def show_collection(collection_id):
         media_links=MediaCollectionLink.sorted(MediaCollectionLink.select(lambda l: l.collection == collection)) if orm.count(collection.media_links) <= 100 else None,
     )
 
+
 @flask_app.route("/collection/<int:collection_id>/episodes")
 def show_collection_episodes(collection_id):
     collection: MediaCollection = MediaCollection.get(id=collection_id)
@@ -262,9 +308,10 @@ def list_media():
         media_list=list(itertools.islice(get_considerable(), 100))
     )
 
+
 @flask_app.route("/media/short")
 @flask_app.route("/media/short/<int:seconds>")
-def list_short_media(seconds: int = 10*60):
+def list_short_media(seconds: int = 10 * 60):
     media_list: Iterable[MediaElement] = orm.select(m for m in MediaElement).order_by(orm.desc(MediaElement.release_date), MediaElement.id)
     def get_considerable():
         for element in media_list:
@@ -277,16 +324,20 @@ def list_short_media(seconds: int = 10*60):
 
 @flask_app.route("/media/unsorted")
 def list_unsorted_media():
-    media_list: Iterable[MediaElement] = orm.select(m for m in MediaElement if len(m.collection_links) == 0).order_by(orm.desc(MediaElement.release_date), MediaElement.id)
+    media_list: Iterable[MediaElement] = orm.select(
+        m for m in MediaElement if len(m.collection_links) == 0
+    ).order_by(orm.desc(MediaElement.release_date), MediaElement.id)
     return render_template(
         "media_list.htm",
         media_list=media_list,
     )
 
+
 @flask_app.route("/media/extract")
 def extract_media():
     return render_template("media_extract.htm")
 
+
 @flask_app.route("/media/<int:media_id>")
 def show_media(media_id):
     element: MediaElement = MediaElement.get(id=media_id)
@@ -341,6 +392,7 @@ def refresh_collections():
         collection_update(coll)
     return redirect_back_or_okay()
 
+
 @flask_app.route("/api/refresh/collection/<int:collection_id>", methods=["POST"])
 def force_refresh_collection(collection_id: int):
     coll: MediaCollection = MediaCollection.get(id=collection_id)
@@ -360,15 +412,28 @@ def show_stats():
                 "known": orm.count(elements),
                 "known_seconds": orm.sum(m.length for m in elements),
                 "watched": orm.count(m for m in elements if m.watched),
-                "watched_seconds": orm.sum((m.length if m.watched else m.progress) for m in elements if m.watched),
+                "watched_seconds": orm.sum(
+                    (m.length if m.watched else m.progress)
+                    for m in elements
+                    if m.watched
+                ),
                 "ignored": orm.count(m for m in elements if m.ignored),
-                "ignored_seconds": orm.sum(m.length - m.progress for m in elements if m.ignored),
-                "to_watch": orm.count(m for m in elements if not m.ignored and not m.watched),
-                "to_watch_seconds": orm.sum(m.length - m.progress for m in elements if not m.ignored and not m.watched)
-            }
-        }
+                "ignored_seconds": orm.sum(
+                    m.length - m.progress for m in elements if m.ignored
+                ),
+                "to_watch": orm.count(
+                    m for m in elements if not m.ignored and not m.watched
+                ),
+                "to_watch_seconds": orm.sum(
+                    m.length - m.progress
+                    for m in elements
+                    if not m.ignored and not m.watched
+                ),
+            },
+        },
     )
 
+
 @flask_app.route("/tag")
 def show_tag():
     tag_list: List[Tag] = Tag.select()
@@ -385,6 +450,7 @@ def test():
         "data": first.to_dict(),
     }, 200
 
+
 # TODO add table for failed attempts so these may be resolved afterwards with increasing delays (add to MediaElement with flag "retrieved" and "last_updated" as date to resolve last try)
 
 
@@ -398,20 +464,25 @@ def redirect_back_or_okay():
         return "400 Bad Request : Invalid Redirect Specified", 400
     return redirect(uri)
 
+
 @flask_app.route("/api/collection/list")
 def api_collection_list():
     collection_list: Iterable[MediaCollection] = MediaCollection.select()
     return {
         "status": True,
-        "data": [{
-            "id": collection.id,
-            "title": collection.title,
-            "release_date": collection.release_date,
-            "length": collection.length,
-            "progress": collection.progress,
-        } for collection in collection_list],
+        "data": [
+            {
+                "id": collection.id,
+                "title": collection.title,
+                "release_date": collection.release_date,
+                "length": collection.length,
+                "progress": collection.progress,
+            }
+            for collection in collection_list
+        ],
     }, 200
 
+
 @flask_app.route("/api/collection/extract", methods=["POST"])
 def api_collection_extract():
     data = request.form.to_dict()
@@ -443,15 +514,18 @@ def api_collection_element(collection_id: int):
                 "notes": collection.notes,
                 "release_date": collection.release_date,
                 "ignored": collection.ignored,
-                "media_links": [{
-                    "media": {
-                        "id": link.element.id,
-                        "title": link.element.title,
-                    },
-                    "season": link.season,
-                    "episode": link.episode,
-                } for link in collection.media_links]
-            }
+                "media_links": [
+                    {
+                        "media": {
+                            "id": link.element.id,
+                            "title": link.element.title,
+                        },
+                        "season": link.season,
+                        "episode": link.episode,
+                    }
+                    for link in collection.media_links
+                ],
+            },
         }, 200
     elif request.method == "POST":
         data = request.form.to_dict()
@@ -481,20 +555,45 @@ def api_collection_element(collection_id: int):
             "error": "405 Method Not Allowed",
         }, 405
 
+
+@flask_app.route("/api/collection/<int:collection_id>", methods=["DELETE"])
+@flask_app.route("/api/collection/<int:collection_id>/delete", methods=["POST"])
+def api_collection_delete(collection_id: int):
+    collection: MediaCollection = MediaCollection.get(id=collection_id)
+    if collection is None:
+        return {
+            "status": False,
+            "error": f"Object not found",
+        }, 404
+    collection.delete()
+    update_element_lookup_cache([collection_id])
+    return redirect_back_or_okay()
+
+
+@flask_app.route("/api/element_lookup_cache/update", methods=["POST"])
+def api_element_lookup_cache_rebuild():
+    update_element_lookup_cache()
+    return redirect_back_or_okay()
+
+
 @flask_app.route("/api/media/list")
 def api_media_list():
     media_list: Iterable[MediaElement] = MediaElement.select()
     return {
         "status": True,
-        "data": [{
-            "id": media.id,
-            "title": media.title,
-            "release_date": media.release_date,
-            "length": media.length,
-            "progress": media.progress,
-        } for media in media_list],
+        "data": [
+            {
+                "id": media.id,
+                "title": media.title,
+                "release_date": media.release_date,
+                "length": media.length,
+                "progress": media.progress,
+            }
+            for media in media_list
+        ],
     }, 200
 
+
 @flask_app.route("/api/media/extract", methods=["POST"])
 def api_media_extract():
     data = request.form.to_dict()
@@ -530,15 +629,18 @@ def api_media_element(media_id: int):
                 "ignored": element.ignored,
                 "watched": element.watched,
                 "can_considered": element.can_considered,
-                "collection_links": [{
-                    "collection": {
-                        "id": link.collection.id,
-                        "title": link.collection.title,
-                    },
-                    "season": link.season,
-                    "episode": link.episode,
-                } for link in element.collection_links]
-            }
+                "collection_links": [
+                    {
+                        "collection": {
+                            "id": link.collection.id,
+                            "title": link.collection.title,
+                        },
+                        "season": link.season,
+                        "episode": link.episode,
+                    }
+                    for link in element.collection_links
+                ],
+            },
         }, 200
     elif request.method == "POST":
         data = request.form.to_dict()
diff --git a/server/entertainment_decider/extractors/media/youtube.py b/server/entertainment_decider/extractors/media/youtube.py
index ae8c162..b4512cd 100644
--- a/server/entertainment_decider/extractors/media/youtube.py
+++ b/server/entertainment_decider/extractors/media/youtube.py
@@ -48,7 +48,14 @@ class YoutubeVideoData(TypedDict):
 
 class YoutubeMediaExtractor(MediaExtractor[YoutubeVideoData]):
 
-    __uri_regex = re.compile(r"^https?://((www\.)?youtube\.com/watch\?v=|youtu\.be/)(?P<id>[^/&?]+)")
+    __uri_regex = re.compile(r"""^
+        https?://(
+            (www\.)?youtube\.com/(
+                watch\?v=
+            )|
+            youtu\.be/
+        )(?P<id>[^/&?]+)
+    $""", re.VERBOSE)
 
     def __init__(self):
         super().__init__("ytdl")