#!/bin/bash

# Create/locate local user folder for the game.
xdg_data_home="${XDG_DATA_HOME:-$HOME/.local/share}"
dir="$xdg_data_home/clonehero"

if ! mkdir -p "$dir"; then
	echo "Failed to create directory at ´$dir'"
	exit 1
fi

if ! cd "$dir"; then
	echo "Failed to change to directory '$dir'"
	exit 1
fi

# Executable *must* be in a writable directory.
# The game is probably trying to write to files relative to the executable's
# path rather than the working directory.
# This way a link does not work, as the game seemingly dereferences it and tries
# to write inside /opt/clonehero.
if ! cp /opt/clonehero/clonehero clonehero; then
	echo "Failed to copy 'clonehero' to '$dir/clonehero'"
	exit 1
fi

# And then we link everything else we can avoid copying.
for f in UnityPlayer.so clonehero_Data; do
	if ! ln -sfT "/opt/clonehero/$f" "$f"; then
		echo "Failed to link '$f' to '$dir/$f'"
		exit 1
	fi
done

# We won't touch neither the Custom/ nor Songs/ directories as those are
# probably best left to the user to populate (or link to another folder).

exec ./clonehero "$@"