#!/bin/sh
# Samæ (ↄ) 2016 - Public domain

# Monitors are placed in
MONITORD="/tmp/monitors"
#MONITORLIST="battery mail room volume wireless xmonad cpu"
MONITORLIST="xmonad"

battery() {
  #echo "$(cat $MONITORD/battery) %"
  cat /sys/class/power_supply/BAT0/capacity
}

clock() {
  date '+%A %d %B %H:%M %Z'
}

mail() {
  sed 's/0/None/' < "$MONITORD/mail"
}

cpu() {
  echo "$(cat $MONITORD/cpu) %"
}

room() {
  echo "$(cat $MONITORD/room) %"
}

volume() {
  sed 's/-1 %/Mute/' <<< "$(cat $MONITORD/volume) %"
}

wireless() {
  cat "$MONITORD/wireless"
}

xmonad() {
  cat "$MONITORD/xmonad"
}

# Loop foreva; wait for events.
while :; do
  buf="%{S0}"
  buf="${buf}                               $(xmonad)            "
  buf="${buf}%{r}"
  #buf="${buf}     %{+u}CPU:%{-u} %{F#EEE8D5}$(cpu)        %{F-}  "
  #buf="${buf}     %{+u}WFI:%{-u} %{F#EEE8D5}$(wireless)   %{F-}  "
  #buf="${buf}     %{+u}CRL:%{-u} %{F#EEE8D5}$(mail)       %{F-}  "
  #buf="${buf}     %{+u}OQP:%{-u} %{F#EEE8D5}$(room)       %{F-}  "
  #buf="${buf}     %{+u}VPN:%{-u} %{F#EEE8D5}$(network)    %{F-}  "
  #buf="${buf}     %{+u}RAM:%{-u} %{F#EEE8D5}$(memused) %  %{F-}  "
  #buf="${buf}     %{+u}MPD:%{-u} %{F#EEE8D5}$(nowplaying) %{F-}  "
  #buf="${buf}     %{+u}VOL:%{-u} %{F#EEE8D5}$(volume)     %{F-}  "
  buf="${buf}     %{+u}FUEL:%{-u} %{F#EEE8D5}$(battery)    %{F-}  "
  buf="${buf}                    %{F#6C71C4}$(clock)      %{F-}"

  echo $buf

  cd ${MONITORD}
  inotifywait -q -q -e create,modify ${MONITORLIST}

  # Ugly hack to prevent reading the monitor file to early (thus catching it
  # while it is empty ^^) Waiting time is set to approximatively 1/27 of a
  # second ie a frame at 27fps, so that it doesn't introduce a feeling of lag
  sleep 0.03s
done