#!/usr/bin/env bash
# Container entrypoint: run Claude Desktop and stop when its window is closed.
#
# Closing the window only hides the app (it keeps running for the tray icon,
# which GNOME doesn't show), so the container would keep running invisibly.
# This watches the app's X windows and quits the app once none of them is
# open or minimized. The container then exits with it.

set -u

claude-desktop "$@" &
app=$!

stop_app() { kill -TERM "$app" 2>/dev/null; wait "$app"; exit $?; }
trap stop_app TERM INT HUP

host="$(hostname)"

# True if any of this container's Claude windows is Normal (shown) or Iconic
# (minimized). A closed window is Withdrawn or loses WM_STATE altogether.
# WM_CLIENT_MACHINE filters out Claude windows from other containers or apps
# on the same X server.
window_open() {
    local w props
    for w in $(xwininfo -root -tree 2>/dev/null \
               | awk '/\("com\.anthropic\.claude" "com\.anthropic\.Claude"\)/ {print $1}'); do
        props="$(xprop -id "$w" WM_CLIENT_MACHINE WM_STATE 2>/dev/null)" || continue
        [[ "$props" == *"WM_CLIENT_MACHINE(STRING) = \"$host\""* ]] || continue
        [[ "$props" =~ "window state: "(Normal|Iconic) ]] && return 0
    done
    return 1
}

seen=0    # only arm the check after the first window has appeared
misses=0  # require a few consecutive misses to ride out brief remaps
while kill -0 "$app" 2>/dev/null; do
    sleep 1 & wait $!
    if window_open; then
        seen=1 misses=0
    elif (( seen )) && (( ++misses >= 3 )); then
        echo "launch-claude: window closed, quitting Claude Desktop" >&2
        stop_app
    fi
done

wait "$app"