#!/usr/bin/env bash
set -euo pipefail

# -----------------------------
# Configuration
# -----------------------------
PICTURES_DIR="$HOME/Wallpapers/pictures"
NAMESPACE="main"   # Fixed swww namespace
MONITOR=$(hyprctl monitors -j | jq -r '.[0].name')  # First monitor

# -----------------------------
# Start swww-daemon if not running
# -----------------------------
if ! pgrep -x swww-daemon >/dev/null; then
    echo "Starting swww-daemon..."
    swww-daemon --namespace "$NAMESPACE" &
    sleep 0.5  # give socket time to appear
fi

# -----------------------------
# Gather wallpapers
# -----------------------------
mapfile -t IMAGES < <(find "$PICTURES_DIR" -type f \( -iname '*.png' -o -iname '*.jpg' -o -iname '*.jpeg' \))
if [ "${#IMAGES[@]}" -eq 0 ]; then
    echo "No images found in $PICTURES_DIR"
    exit 1
fi

# -----------------------------
# Workspace event listener
# -----------------------------
IPC_SOCKET="$XDG_RUNTIME_DIR/hypr/$HYPRLAND_INSTANCE_SIGNATURE/.socket2.sock"
echo "Listening for workspace events on $IPC_SOCKET..."

socat -u UNIX-CONNECT:"$IPC_SOCKET" STDOUT | while read -r line; do
    if [[ "$line" =~ workspace\#([0-9]+) ]]; then
        WS="${BASH_REMATCH[1]}"
        RAND_IMAGE="${IMAGES[RANDOM % ${#IMAGES[@]}]}"
        echo "Workspace $WS active → setting wallpaper: $RAND_IMAGE"
        swww img "$RAND_IMAGE" --resize stretch --transition-type random --namespace "$WS"
    fi
done