#!/usr/bin/env bash

# mutes the pipewire sink of the active window, if we can find it.
# $1: if non-empty, applies the specified shader

# 1: get activewindow pid 
# 2 match to pactl source
# 2a: try directly against pid
# 2b: if fails: run through fallbacks for specific windows
# 3 toggle pactl source mute
# 4 set window tag for custom shading


# Toggle mute a pactl sink
# $1 int: id of sink to toggle
function toggle_sink {
  pactl set-sink-input-mute "$1" toggle
}

# Toggle mute for an array of pactl sinks
# $1 string: space separated list of sink ids
function toggle_multiple {
  for i in $1; do
    toggle_sink "$i"
  done
}


case "$XDG_CURRENT_DESKTOP" in
  "Hyprland")
    activePid=$(hyprctl activewindow -j | jq ".pid")
    tagCmd="hyprctl dispatch 'hl.dsp.window.tag({ tag = \"shader/$1\" })'"
    class=$(hyprctl activewindow -j | jq  ".class")
    ;;
  *)
    dunstify -u low -t 2000 -i ~/.icons/candy-icons/apps/scalable/yast-sound.svg "muteActive does not support the current desktop."
    exit
    ;;
esac


sinks=$(pactl -f json list sink-inputs)
binary=$(ps -q "$activePid" -o comm=)
windowName="$binary"

mutableSinks=$(printf "%s" "$sinks" | jq -r ".[] | select(.properties.\"application.process.id\" == \"$activePid\") | .index")

# fallbacks
if [[ -z "$mutableSinks" ]]; then
  # feishin
  mutableSinks=$(printf "%s" "$sinks" | jq -r ".[] | select(.properties.\"application.process.binary\" == \"$binary\") | .index")
  windowName="Feishin" 
fi
if [[ -z "$mutableSinks" ]]; then
  # mpv
  mutableSinks=$(printf "%s" "$sinks" | jq -r ".[] | select(.properties.\"application.id\" == \"$binary\") | .index")
  windowName="Mpv" 
fi
if [[ -z "$mutableSinks" && "$class" = \"tf_linux64\" ]]; then
  # tf2
  mutableSinks=$(printf "%s" "$sinks" | jq -r ".[] | select(.properties.\"application.name\" == \"tf_linux64\" ) .index")
  windowName="TF2" 
fi


if [[ -z "$mutableSinks" ]]; then
  # still no matched sink; give up 
  printf "Couldn't match activeWindow to any pipewire sinks!\n"
  dunstify -u low \
    -a Mute \
    -r 35 \
    -i ~/.icons/candy-icons/apps/scalable/yast-sound.svg \
    "Could not match active window to pipewire input"
  exit 1
else
  printf "Matched activeWindow | class | %s\n |binary| %s\n | sink | %s | to pipewire sink" "$class" "$binary" "$mutableSinks" | column -ts '|'
  dunstify -u low \
    -a Mute \
    -r 35 \
    -i ~/.icons/candy-icons/apps/scalable/yast-sound.svg \
    "Toggled mute on active window ($windowName)"
fi

toggle_multiple "$mutableSinks"
[ -n "$1" ] && eval "$tagCmd"