#!/usr/bin/env bash
# ABOUT ME
# Turns Cosmoteer's built-in DebugMode on or off by editing settings.rules.
#
# Why it exists: the game binary contains a part debugger (OpenPartDebugger,
# PartDebugValue / PartDebugToggle / PartDebugTrigger) which can show a part's
# live component values. That is the only way to see, from inside the game, why
# a modded toggle chain is not doing what it should. It is gated behind the
# DebugMode setting, which has no in-game UI in a release build.
#
# Cosmoteer rewrites settings.rules when it exits, so the game must be closed
# before running this or the change is lost.
#
# Usage:  ./debug_mode.sh on
#         ./debug_mode.sh off

set -euo pipefail

MODE="${1:-}"
case "$MODE" in
	on)  VALUE="Normal" ;;
	off) VALUE="None" ;;
	*)   echo "Usage: $0 on|off" >&2; exit 1 ;;
esac

find_settings() {
	local candidates=(
		"$HOME"/.local/share/Steam/steamapps/compatdata/799600/pfx/drive_c/users/steamuser/"Saved Games"/Cosmoteer/*/settings.rules
		/mnt/*/SteamLibrary/steamapps/compatdata/799600/pfx/drive_c/users/steamuser/"Saved Games"/Cosmoteer/*/settings.rules
		"$HOME"/"Saved Games"/Cosmoteer/*/settings.rules
		"$HOME"/Documents/"My Games"/Cosmoteer/*/settings.rules
	)
	for path in "${candidates[@]}"; do
		[ -f "$path" ] && printf '%s\n' "$path" && return 0
	done
	return 1
}

SETTINGS="${COSMOTEER_SETTINGS:-$(find_settings || true)}"

if [ -z "$SETTINGS" ]; then
	echo "Could not find settings.rules. Set COSMOTEER_SETTINGS and run again." >&2
	exit 1
fi

if pgrep -f -i cosmoteer >/dev/null 2>&1; then
	echo "Cosmoteer is running. Quit it first -- it rewrites settings.rules on exit" >&2
	echo "and would discard this change." >&2
	exit 1
fi

[ -f "$SETTINGS.bak-preautorad" ] || cp "$SETTINGS" "$SETTINGS.bak-preautorad"

if grep -qE '^DebugMode = ' "$SETTINGS"; then
	sed -i "s/^DebugMode = .*/DebugMode = $VALUE/" "$SETTINGS"
else
	printf 'DebugMode = %s\n' "$VALUE" >> "$SETTINGS"
fi

echo "DebugMode = $VALUE"
echo "Backup at $SETTINGS.bak-preautorad"