Update Channels & Notify

.local/bin/channelrefresh

@@ -0,0 +1,50 @@
+#!/bin/dash
+
+sleep 16
+
+DATA_DIR="$HOME/.cache/youtube_channels"
+CHANNEL_LIST="$HOME/.local/share/channels.txt"
+mkdir -p "$DATA_DIR"
+
+compare_data() {
+  local channel_name="$1"
+  local data_file="${DATA_DIR}/${channel_name}.tsv"
+  local old_data_file="${DATA_DIR}/${channel_name}_old.tsv"
+
+    [ -e "$old_data_file" ] && {
+    old_urls=$(cut -f2 "$old_data_file")
+    new_urls=$(cut -f2 "$data_file")
+
+    echo "$old_urls" | sort > temp1
+    echo "$new_urls" | sort > temp2
+    new_videos=$(comm -13 temp1 temp2 | wc -l)
+    rm temp1 temp2
+
+    [ "$new_videos" -gt 0 ] && notify-send -u critical "$channel_name | $new_videos videos"
+  }
+}
+
+update_data() {
+  local channel_name="$1"
+  local channel_url="$2"
+  local data_file="${DATA_DIR}/${channel_name}.tsv"
+  local old_data_file="${DATA_DIR}/${channel_name}_old.tsv"
+
+  mv "$data_file" "$old_data_file" 2>/dev/null
+
+  yt-dlp -j --flat-playlist --skip-download --extractor-args youtubetab:approximate_date "$channel_url" | jq -r '[.title, .url, .view_count, .duration, .upload_date] | @tsv' > "$data_file"
+}
+
+update_all_channels() {
+  while IFS="=" read -r channel_name channel_url; do
+    update_data "$channel_name" "$channel_url" &
+  done < "$CHANNEL_LIST"
+
+  wait
+
+  while IFS="=" read -r channel_name channel_url; do
+    compare_data "$channel_name"
+  done < "$CHANNEL_LIST"
+}
+
+update_all_channels