#!/usr/bin/env bash
set -e

DEBUG=false
for arg; do
	case "$arg" in
	--debug)
		DEBUG=true
		shift
		;;
	*)
		break
		;;
	esac
done

if $DEBUG; then
	set -x
	echo "[DEBUG] Running in debug mode" >&2
fi

# pick up bundled libs first
export LD_LIBRARY_PATH="$APPDIR/usr/lib:$LD_LIBRARY_PATH"

# figure out a stable logs directory
STATE_HOME="${XDG_STATE_HOME:-$HOME/.local/state}"
LOG_DIR="$STATE_HOME/px4/logs"
mkdir -p "$LOG_DIR"

if $DEBUG; then
	echo "[DEBUG] LOG_DIR = $LOG_DIR" >&2
fi

# make a temporary workdir for ROMFS & other runtime files
WORKDIR=$(mktemp -d)
if $DEBUG; then
	echo "[DEBUG] WORKDIR = $WORKDIR" >&2
fi

# symlink PX4's ./log folder to our XDG location
ln -s "$LOG_DIR" "$WORKDIR/log"

# copy the rest of the ROMFS into WORKDIR, etc.
cp -a "$APPDIR/usr/share/px4/romfs/." "$WORKDIR"

# add the px4-* helpers to PATH, then launch
export PATH="$WORKDIR/bin:$WORKDIR:$PATH"
exec "$APPDIR/usr/bin/px4" -w "$WORKDIR" "$@"