[script] Add simple due script for bibtex file

Scrapes a bibtex file for 'due' field, and outputs all found entries
with their priority and sorted for date.

polybar/.config/polybar/scripts/poly-archupdates

@@ -5,7 +5,7 @@
 # returns empty string when 0 packages are available, so
 # that polybar simply displays nothing.
 #
-# dependendies: yay, bc, (pacman-contrib optional)
+# dependendies: yay, (pacman-contrib optional)
 
 # prefer checkupdates since it allows checking w/o partial upgrade
 if command -v "checkupdates" >/dev/null; then
@@ -21,7 +21,7 @@ updates_aur="$(yay -Qum 2>/dev/null | wc -l)"
 # if ! updates_aur=$(pikaur -Qua 2> /dev/null | wc -l); then
 # if ! updates_aur=$(rua upgrade --printonly 2> /dev/null | wc -l); then
 
-updates="$(echo "$updates_repo + $updates_aur" | bc)"
+updates="$((updates_repo + updates_aur))"
 
 if [ "$updates" -gt 0 ]; then
   echo "$updates"

polybar/.config/polybar/scripts/poly-mprisdisplay

@@ -1,11 +1,47 @@
 #!/bin/sh
+# script to echo the current playback situation
+#
+# call without args to return playing symbol or empty, depending on current playback status
+# call with 1 to return 'artist -  title' metadata (verbose mode)
+# send SIGUSR2 signal to toggle pause/playing state of song (e.g. kill -USR2 %PID)
+#
+# depends on playerctl being installed
 
-player_status=$(playerctl status 2>/dev/null)
+exist playerctl low "polybar music" || exit 1
 
-if [ "$player_status" = "Playing" ]; then
-  echo "ﱘ $(playerctl metadata artist) - $(playerctl metadata title)"
-elif [ "$player_status" = "Paused" ]; then
-  echo "  $(playerctl metadata artist) - $(playerctl metadata title)"
-else
-  echo ""
-fi
+mode=${1:-0}
+update_time=1
+symbol_playing=""
+symbol_paused=""
+
+modetoggle() {
+  mode=$(((mode + 1) % 2))
+}
+trap "modetoggle" USR1
+
+playpause() {
+  playerctl play-pause
+}
+trap "playpause" USR2
+
+decorate() {
+  if [ "$player_status" = "Playing" ]; then
+    echo "${symbol_playing}$1"
+  elif [ "$player_status" = "Paused" ]; then
+    echo "${symbol_paused}$1"
+  else
+    echo ""
+  fi
+}
+
+while true; do
+  player_status=$(playerctl status 2>/dev/null)
+
+  if [ $mode -eq 0 ]; then
+    decorate ""
+  elif [ $mode -eq 1 ]; then
+    decorate " $(playerctl metadata artist) - $(playerctl metadata title)"
+  fi
+  sleep $update_time &
+  wait
+done

polybar/.config/polybar/scripts/poly-papersdue

@@ -0,0 +1,15 @@
+#!/usr/bin/env sh
+
+while true; do
+  all="$(bib-due -u "$(date --date='fri this week' +%Y-%m-%d)" | wc -l)"
+  required="$(bib-due -u "$(date --date='fri this week' +%Y-%m-%d)" -p1 | wc -l)"
+
+  # add polybar formatting to color required readings red
+  # https://github.com/polybar/polybar/wiki/Formatting#format-tags
+  # TODO use xresources
+  colorreq=$(xrdb -query | grep -e '\*color1:' | cut -f2)
+  colorall=$(xrdb -query | grep -e '\*foreground:' | cut -f2)
+  printf "%s%s%s(%s)\n" "%{F${colorall:-#000}}" "$all" "%{F${colorreq:-#d00}}" "$required"
+
+  sleep 120
+done