#!/usr/bin/env bash

action="$1"

if [ -z "$action" ]; then
    echo "Usage: $0 [play-pause|next|previous|+5%|-5%|50%]"
    exit 1
fi

# Deezer PWA PID
root_pid=$(hyprctl clients -j | jq -r '.[] | select(.initialTitle == "Deezer") | .pid' | head -n1)

if [ -z "$root_pid" ] || [ "$root_pid" = "null" ]; then
    echo "[ERROR] Deezer window not found."
    exit 1
fi

case "$action" in 
	play-pause|next|previous)
		playerctl --player="chromium.instance${root_pid}" "$action"
		exit 0
		;;
	*)
		# Volume: find sink-input whose PID is in the process tree
        pids=$(pstree -p "$root_pid" | grep -oP '\(\K[0-9]+')
        sink=$(pactl -f json list sink-inputs | jq -r --argjson pids "$(echo "$pids" | jq -R . | jq -s 'map(tonumber)')" \
            '.[] | select(.properties["application.process.id"] | tonumber | IN($pids[])) | .index' | head -n1)

        if [ -z "$sink" ]; then
            echo "[ERROR] No audio stream found for Deezer."
            exit 1
        fi
        pactl set-sink-input-volume "$sink" "$action"
        ;;
esac


#
# # 2) Gather ALL descendant PIDs
# declare -a pid_array
# pid_array+=("$root_pid")
#
# # Direct children
# children=($(pgrep -P "$root_pid"))
# echo "[INFO] Children: ${children[*]}"
#
# for c in "${children[@]}"; do
#     pid_array+=("$c")
#     gc=($(pgrep -P "$c"))
#     echo "[INFO] Grandchildren of $c: ${gc[*]}"
#     for g in "${gc[@]}"; do
#         pid_array+=("$g")
#     done
# done
#
# echo "[INFO] All collected PIDs: ${pid_array[*]}"
#
# echo "----------------------------------"
# echo "[INFO] Checking sink inputs..."
# echo "----------------------------------"
#
# sink=""
#
# while IFS= read -r block; do
#     pid=$(echo "$block" | jq -r '.properties["application.process.id"] // empty')
#     index=$(echo "$block" | jq -r '.index')
#
#     echo "[SINK] index=$index pid=$pid"
#
#     [ -z "$pid" ] && { echo "  -> Skipping"; continue; }
#
#     for candidate in "${pid_array[@]}"; do
#         if [ "$pid" = "$candidate" ]; then
#             echo "  -> MATCH with PID $candidate"
#             sink="$index"
#             break 2
#         fi
#     done
#
#     echo "  -> No match"
#
# done < <(pactl -f json list sink-inputs | jq -c '.[]')
#
# echo "----------------------------------"
#
# if [ -z "$sink" ]; then
#     echo "[ERROR] No audio stream found for Deezer."
#     exit 1
# fi
#
# echo "[INFO] Deezer sink index: $sink"
# echo "[INFO] Applying: $change"
#
# pactl set-sink-input-volume "$sink" "$change"
#