update rssadd

home/default/.local/bin/rssadd

@@ -1,18 +1,119 @@
 #!/bin/sh
+# derived from yt-id (https://codeberg.org/Denshi/Scripts) and rssadd (https://github.com/lukesmithxyz/voidrice)
+# requirements: `pup` for parsing html
 
-if echo "$1" | grep -q "https*://\S\+\.[A-Za-z]\+\S*" ; then
-	url="$1"
+## kill early
+nothing() {
+[ -z "$1" ] && printf "Usage: rssadd [RSSURL | YTURL | @Username | XMLFILE | --file FILE | --scan WEBPAGE ]\n" && exit 0
+}
+nothing "$1"
+
+say() {
+  printf "$1 \e[1;34m$2\e[0m\n"
+}
+
+add_rss() {
+  RSSFILE="${XDG_CONFIG_HOME:-$HOME/.config}/newsboat/urls"
+  if awk '{print $1}' "$RSSFILE" | grep "^$url$" >/dev/null; then
+  	say "You already have this RSS feed." "$url"
+  else
+	echo "$url" >> "$RSSFILE" && say "RSS feed added." "$url"
+  fi
+}
+
+get_yt_rss() {
+  BASEURL="https://www.youtube.com/feeds/videos.xml?channel_id="
+  # invidious
+  # BASEURL="https://vid.puffyan.us/feed/channel/"
+  # BASEURL="https://invidious.snopyta.org/feed/channel/"
+  # BASEURL="https://invidious.kavin.rocks/feed/channel/"
+  # BASEURL="https://inv.riverside.rocks/feed/channel/"
+  URL=$url
+  curl -Ls "$URL" > /dev/null || URL="https://www.youtube.com/$URL"
+  # Actually getting the ID
+  ID="$(curl -Ls "$URL" | grep -o -P '.{0,0}channel_id.{0,25}' | sed '$!d' | cut -c 12-35)"
+  [ -z "$ID" ] && say "Channel not found." && exit 1
+  #printf "%s\n" $BASEURL$ID
+  url="$BASEURL$ID"
+}
+
+# WIP
+find_rss() {
+  echo "$url" | grep -Pq "(http|https)://" || url="https://$url"
+  address="$(echo "$url" | sed 's/\/$//')"
+  #domain="$(echo "$url" | grep -Po '(http://|https://)(?:[^./]+[.])*[^\./]*\.[^\./]*(?=/)')"
+  domain="$(echo "$url" | grep -Po '(http://|https://)(?:[^./]+[.])*[^\./]*\.[^\./]*')"
+  read atom < <(curl -Ls "$url" | pup 'link[href][type*="atom+xml"] attr{href}')
+  read rss < <(curl -Ls "$url" | pup 'link[href][type*="rss+xml"] attr{href}')
+  [ -n "$atom" ] && url="$atom"
+  [ -n "$rss" ] && url="$rss"
+  [ -z "$atom" ] && [ -z "$rss" ] && say "RSS not found." "$url" && exit 1
+  if echo "$url" | grep -q '^/' ; then
+      location="$(echo "$url" | sed 's/^\///')"
+      url="$domain/$location"
+  fi
+  echo "$url" | grep -Pq "(http|https)://" || url="$address/$url"
+}
+
+# WIP
+find_fedi_rss() {
+echo "$handle" | grep "^@.*@*\.*" || say "not a handle" "$url" && exit 1
+
+}
+
+add_yt_rss() {
+  get_yt_rss
+  add_rss
+}
+
+execute_command() {
+if echo "$url" | grep -q "^https://www.youtube.com/feeds/videos.xml?*" ; then
+  add_rss
+elif echo "$url" | grep -q "^https://www.youtube.com/*" ; then
+  add_yt_rss
+elif echo "$url" | grep -q "https*://\S\+\.[A-Za-z]\+\S*" ; then
+  add_rss
+elif echo "$url" | grep -q "^@.*" ; then
+  add_yt_rss
 else
-	url="$(grep -Eom1 '<[^>]+(rel="self"|application/[a-z]+\+xml)[^>]+>' "$1" |
-		grep -o "https?://[^\" ]")"
-
-	echo "$url" | grep -q "https*://\S\+\.[A-Za-z]\+\S*" ||
-		notify-send "That doesn't look like a full URL." && exit 1
+  url="$(grep -sEom1 '<[^>]+(rel="self"|application/[a-z]+\+xml)[^>]+>' "$url" | grep -Eo "(http|https)://[a-zA-Z0-9./?=_%:-]*")"
+    echo "$url" | grep -Eq "(http|https)://[a-zA-Z0-9./?=_%:-]*" && add_rss ||
+  say "That doesn't look like a full URL." "$url"
+#TODO be more verbose
 fi
+}
 
-RSSFILE="${XDG_CONFIG_HOME:-$HOME/.config}/newsboat/urls"
-if awk '{print $1}' "$RSSFILE" | grep "^$url$" >/dev/null; then
-	notify-send "You already have this RSS feed."
-else
-	echo "$url" >> "$RSSFILE" && notify-send "RSS feed added."
-fi
+execute_loop() {
+url="$1" && execute_command
+}
+
+case "$1" in
+  -h|--help)
+printf "Usage: rssadd [RSSURL | YTURL | @Username | XMLFILE | --file FILE | --scan WEBPAGE ]
+
+USAGE
+    -s, --scan
+      scan webpages for rss or atom links.
+      format can be a domain name or http/https links
+    --file
+      input from file seperated with lines\n"
+     exit 0
+  ;;
+  -s|--scan)
+    url="$2"
+    nothing "$url"
+    find_rss
+    execute_command
+    exit 0
+  ;;
+  --file)
+    nothing "$2"
+    while IFS= read -r line; do
+    execute_loop "$line"
+    done < "$2"
+    exit 0
+  ;;
+esac
+
+url="$1"
+execute_command