#!/bin/bash

getpids() {
  pids=( $(pgrep swaybg) )
}

killpids() {
#  sleep 5
  for i in ${pids[@]};do
#    kill "${i}" && echo "killed ${i}"
    echo "${pids[@]}"
  done
}

getwpno() {
#  wpno_last="${wpno}"
  wpno=$(printf "%02d\n" $(($(echo "$1" | awk '{print $1}' | grep -o "^[1-9]*")-1)) | cut -c 1 | sed 's/[^0-9]*//g')
  echo "${wpno}" | tee "$HOME/.cache/sway-wallpaper/${2}"
}

setbg() {
#  swaybg -i "$HOME/.config/sway/assets/wallpaper/${output}/${wpno}.jpg" -o "${output}" &
  for d in ${outputs[@]};do
    d_wpno=$(cat "$HOME/.cache/sway-wallpaper/${d}")
#    echo "hi ${d}"
    swaymsg output "${d}" bg "$HOME/.config/sway/assets/wallpaper/${d}/${d_wpno}.jpg" fill
#  swaybg -i "$HOME/.config/sway/assets/wallpaper/${output}/${wpno}.jpg" -o "${output}"
  done
}

#wpno_last="9"

getpids

output=$(swaymsg -t get_outputs | jq -r '.[] | select(.focused) | {name} | "\(.name)"')
outputs=( $(swaymsg -t get_outputs | jq -r '.[] | {name} | "\(.name)"') )
workspace=$(swaymsg -t get_workspaces | jq -r '.[] | select(.focused) | {name} | "\(.name)"')
getwpno "${workspace}" "${output}"
setbg "${output}" "${wpno}"

killpids

swaymsg -r -t subscribe -m '["workspace"]' | jq -rc --unbuffered 'select(.change == "focus") | .current | "\(.name) \(.output)"' | while read name output;do
  wsno=$(($(echo "$name" | awk '{print $1}' | grep -o "^[1-9]*")-1))
  echo $name
  echo $output
  getpids
  wpno_last=$(cat "$HOME/.cache/sway-wallpaper/${output}")
  getwpno "${name}" "${output}"
  echo "${wpno_last}"

  if [[ "${wpno}" -ne "${wpno_last}" ]];then
    echo "hi"
    setbg "${output}" "${wpno}"
    killpids
  fi
done