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

# Open a new kitty window in the working directory of the focused terminal.
#
# Umbriel's spawn action hands the new process Umbriel's own working
# directory, so ask the focused kitty instance over its remote control socket
# to open an OS window with --cwd=current instead. Requires in kitty.conf:
#
#     allow_remote_control yes
#     listen_on unix:/tmp/umbriel-kitty
#
# Each instance then listens on /tmp/umbriel-kitty-<pid>. Falls back to a
# plain kitty launch when no instance is listening, for example on the first
# terminal of a session or while focus is outside kitty.
#
# Usage: bind the compositor terminal keybind to this script.

socket_prefix="/tmp/umbriel-kitty"

focused_pid=$(umbriel windows --json 2>/dev/null | jq -r '
    [.[] | select(.app_id == "kitty")] as $kitties
    | (($kitties | map(select(.active)) | first)
       // ($kitties | map(select(.focused)) | first)
       // ($kitties | first))
    | if . == null then empty else .pid end' 2>/dev/null || true)

if [[ -n $focused_pid ]] &&
	kitty @ --to "unix:$socket_prefix-$focused_pid" \
		launch --type=os-window --cwd=current 2>/dev/null; then
	exit 0
fi

exec kitty