#!/bin/sh
# SPDX-License-Identifier: GPL-3.0-or-later
# Copyright (C) 2021 KikooDX

START_POS="$PWD"
LEVEL_COUNT=0

cd assets/levels || exit
for PACK in *; do
	PACK_NAME="$(basename "$PACK")"
	cd "$PACK" || exit
	for LEVEL in *; do
	 	[ "$(basename $LEVEL)" == fxconv-metadata.txt ] && continue
		LEVEL_ARRAY="$(printf '%s\n\tlevel_binaries[%s] = %s;' \
		    "$LEVEL_ARRAY" "$LEVEL_COUNT" \
		    "kble_$(basename "$LEVEL" .kble)")"
	   	EXTERN_LEVEL="$(printf '%s\nextern uint8_t %s[];' "$EXTERN_LEVEL" \
		    "kble_$(basename "$LEVEL" .kble)")"
		LEVEL_COUNT="$((LEVEL_COUNT + 1))"
		LEVEL_NAME="$(basename "$LEVEL" | cut -c2- |
		    awk -F '.' '{print $1}' |
		    tr '[:lower:]' '[:upper:]')"
		[ -z "$LEVEL_NAMES" ] &&
		LEVEL_NAMES="
	\"$LEVEL_NAME\"" ||
		LEVEL_NAMES="$LEVEL_NAMES,
	\"$LEVEL_NAME\""
	done
	cd ..
done

printf '/* SPDX-License-Identifier: GPL-3.0-or-later */\n'
printf '/* This code was generated with `make_filepaths.sh` */\n'
printf '#include "filepaths.h"\n'
printf '#include <stdint.h>\n'

printf '%s\n\n' "$EXTERN_LEVEL"
printf 'uint8_t *level_binaries[%s];\n\n' "$LEVEL_COUNT"

printf 'char *const level_names[%s] = {%s\n};\n\n' "$LEVEL_COUNT" "$LEVEL_NAMES"

# init_level_binaries
printf 'void\ninit_level_binaries(void)\n{'
printf '%s\n}\n' "$LEVEL_ARRAY"

# Create headers
cd "$START_POS"
mkdir -p generated/include
printf '#define LEVEL_COUNT %s\n' "$LEVEL_COUNT" > generated/include/pack_count.h
[ "$((LEVEL_COUNT % 4))" != 0 ] && LEVEL_COUNT="$((LEVEL_COUNT + 4 - LEVEL_COUNT % 4))"
printf '#define PACK_COUNT %s\n' "$((LEVEL_COUNT / 4))" >> generated/include/pack_count.h