feat: Randomly fetch a few channels, then get their recommendations

Dockerfile

@@ -0,0 +1,52 @@
+FROM crystallang/crystal:1.12.2-alpine AS builder
+
+RUN apk add --no-cache sqlite-static yaml-static
+
+ARG release
+
+WORKDIR /invidious
+COPY ./shard.yml ./shard.yml
+COPY ./shard.lock ./shard.lock
+RUN shards install --production
+
+COPY ./src/ ./src/
+# TODO: .git folder is required for building – this is destructive.
+# See definition of CURRENT_BRANCH, CURRENT_COMMIT and CURRENT_VERSION.
+COPY ./.git/ ./.git/
+
+# Required for fetching player dependencies
+COPY ./scripts/ ./scripts/
+COPY ./assets/ ./assets/
+COPY ./videojs-dependencies.yml ./videojs-dependencies.yml
+
+RUN crystal spec --warnings all \
+    --link-flags "-lxml2 -llzma"    
+RUN --mount=type=cache,target=/root/.cache/crystal if [[ "${release}" == 1 ]] ; then \
+        crystal build ./src/invidious.cr \
+        --release \
+        --static --warnings all \
+        --link-flags "-lxml2 -llzma"; \
+    else \
+        crystal build ./src/invidious.cr \
+        --static --warnings all \
+        --link-flags "-lxml2 -llzma"; \
+    fi
+
+FROM alpine:3.20
+RUN apk add --no-cache rsvg-convert ttf-opensans tini tzdata
+WORKDIR /invidious
+RUN addgroup -g 1000 -S invidious && \
+    adduser -u 1000 -S invidious -G invidious
+COPY --chown=invidious ./config/config.* ./config/
+RUN mv -n config/config.example.yml config/config.yml
+RUN sed -i 's/host: \(127.0.0.1\|localhost\)/host: invidious-db/' config/config.yml
+COPY ./config/sql/ ./config/sql/
+COPY ./locales/ ./locales/
+COPY --from=builder /invidious/assets ./assets/
+COPY --from=builder /invidious/invidious .
+RUN chmod o+rX -R ./assets ./config ./locales
+
+EXPOSE 3000
+USER invidious
+ENTRYPOINT ["/sbin/tini", "--"]
+CMD [ "/invidious/invidious" ]

deploy.sh

@@ -0,0 +1,4 @@
+docker buildx build --platform=linux/x86_64 --tag=invidious . && docker tag invidious main.local:20000/invidious/invidious
+docker push main.local:20000/invidious/invidious
+docker rmi $(docker images main.local:20000/invidious/invidious -q) --force
+echo "Finished."

src/invidious/trending.cr

@@ -44,20 +44,28 @@ end
 
 def fetch_subscription_related_videoids(env, region, locale)
   user = env.get("user").as(Invidious::User)
-  channel_videos, notifications = get_subscription_feed(user, 5, 1)
+  channel_videos, notifications = get_subscription_feed(user, 10, 1)
 
   videos = [] of SearchVideo
-  channel_videos.each do |video|
-    video = get_video(video.id)
-    related = video.related_videos
+  channel_videos.sample((channel_videos.size / 3).to_i).each do |channel_video|
+    next if channel_video.live_now || channel_video.premiere_timestamp || channel_video.length_seconds == 0 || channel_video.views == 0
+    
+    video = get_video(channel_video.id)
+    next unless video.video_type == VideoType::Video
+
+    related = video.related_videos.sample(10) # pick random related videos
     related.each do |related_video|
-      related_id = related_video["id"]
+      next unless id = related_video["id"]?
+      next unless related_video["view_count"]? && related_video["view_count"]? != 0
+      next unless related_video["published"]?
+      next unless related_video["length_seconds"]? && related_video["length_seconds"]? != 0
+      
       videos << SearchVideo.new({
         title:              related_video["title"],
-        id:                 related_video["id"],
+        id:                 id,
         author:             related_video["author"],
         ucid:               related_video["ucid"]? || "",
-        published:          related_video["published"]?.try { |p| Time.parse_rfc3339(p) } || Time.utc,
+        published:          (Time.parse_rfc3339(related_video["published"].to_s) rescue Time.utc),
         views:              related_video["view_count"]?.try &.to_i64 || 0_i64,
         description_html:   "", # not available
         length_seconds:     related_video["length_seconds"]?.try &.to_i || 0,