#!/bin/sh

set -eu

SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)

log() {
	printf '[mice-launcher] %s\n' "$*"
}

find_game_dir() {
	for candidate in \
		"$SCRIPT_DIR/mice" \
		"$SCRIPT_DIR" \
		/mnt/mmc/ports/mice \
		/roms/ports/mice \
		"$HOME/mice-current" \
		/root/mice \
		"$HOME/mice"; do
		if [ -f "$candidate/rats.py" ]; then
			printf '%s\n' "$candidate"
			return 0
		fi
	done
	return 1
}

find_python() {
	for candidate in \
		"$GAMEDIR/.venv/bin/python" \
		"$HOME/miniconda3/bin/python" \
		/root/miniconda3/bin/python \
		/usr/bin/python3 \
		/usr/bin/python; do
		if [ -x "$candidate" ]; then
			printf '%s\n' "$candidate"
			return 0
		fi
	done
	return 1
}

detect_keybindings_profile() {
	if [ -f /opt/muos/device/current/config.ini ]; then
		board_name=$(sed -n 's/^name = //p' /opt/muos/device/current/config.ini | head -n 1 | tr '[:upper:]' '[:lower:]')
		case "$board_name" in
			*rg40xx*)
				printf 'rg40xx\n'
				return 0
				;;
			*r36s*)
				printf 'r36s\n'
				return 0
				;;
		esac
	fi
	return 1
}

GAMEDIR=$(find_game_dir)
PYTHONBIN=$(find_python)

mkdir -p "$GAMEDIR/logs"
LOGFILE="$GAMEDIR/logs/launcher.log"
exec >>"$LOGFILE" 2>&1

log "script_dir=$SCRIPT_DIR"
log "game_dir=$GAMEDIR"
log "python=$PYTHONBIN"

export MICE_PROJECT_ROOT="$GAMEDIR"

if [ -z "${MICE_KEYBINDINGS_PROFILE:-}" ]; then
	MICE_KEYBINDINGS_PROFILE=$(detect_keybindings_profile || true)
	export MICE_KEYBINDINGS_PROFILE
fi

if [ -n "${MICE_KEYBINDINGS_PROFILE:-}" ]; then
	log "keybindings_profile=$MICE_KEYBINDINGS_PROFILE"
fi

cd "$GAMEDIR"
exec "$PYTHONBIN" rats.py