#!/bin/sh

set -e

_pid_dir="${XDG_RUNTIME_DIR:-/tmp/$(id -u)-runtime}/acejuice"
mkdir -p "$_pid_dir"
PID_FILE="$_pid_dir/ajuice-bar.pid"
unset _pid_dir

if [ -f "$PID_FILE" ]; then
  while read -r pid; do
    ppids="$(ps -o pid= --ppid $pid || :)"
    if [ ! -z  "$ppids" ]; then
       printf "%s\n" "$ppids" | xargs kill -9
    fi
    kill -15 $pid || :
  done < "$PID_FILE"

  rm "$PID_FILE"
fi

# Give a grace period for all processes to terminate gracefully
sleep 1

# PID of this script
printf "%s\n" "$$" >> "$PID_FILE"

acejuice_monitors() {
    _pipe_dir="${XDG_RUNTIME_DIR:-/tmp/$(id -u)-runtime}/acejuice"
    mkdir -p "$_pipe_dir"
    NPIPE_OUT="$_pipe_dir/main.sock"
    unset _pipe_dir

    if ! mkfifo "$NPIPE_OUT" 2> /dev/null; then
      printf "fifo '%s' already present\n" "$NPIPE_OUT" >&2
    fi

    if command -v xrandr > /dev/null; then
      __monitor_list=""
      OLDIFS="$IFS"
      IFS="
"
      for line in $(xrandr --listmonitors); do
        case "$line" in
          " "[0-9]*)
            __monitor_list="$__monitor_list ${line##*  }"
          ;;
          *)
            :
          ;;
        esac
      done
      IFS="$OLDIFS"
      # Remove space character prefix in the list
      __monitor_list="${__monitor_list# }"
      if [ -n "$__monitor_list" ]; then
        printf ":MON LIST %s\n" "$__monitor_list" > "$NPIPE_OUT"
      fi
      unset __monitor_list
    fi
}

acejuice_monitors &
printf "%s\n" "$!" >> "$PID_FILE"

audio-pulse --subscribe | acejuice-pulse --socket --newline --icon ascii --icon-mute --no-value &
printf "%s\n" "$!" >> "$PID_FILE"

acejuice-interval --socket &
printf "%s\n" "$!" >> "$PID_FILE"

acejuice | /usr/bin/lemonbar -p &
printf "%s\n" "$!" >> "$PID_FILE"