#!/usr/bin/env bash

. /bedrock/share/common-code
ver_cmp_first_newer_alpha() {
	# 0.7.0beta1
	# ^ ^ ^^  ^^
	# | | ||  |\ tag_ver
	# | | |\--+- tag
	# | | \----- patch
	# | \------- minor
	# \--------- major

	left_major="$(echo "${1}" | awk -F'[^0-9][^0-9]*' '{print$1}')"
	left_minor="$(echo "${1}" | awk -F'[^0-9][^0-9]*' '{print$2}')"
	left_patch="$(echo "${1}" | awk -F'[^0-9][^0-9]*' '{print$3}')"
	left_tag="$(echo "${1}" | awk -F'[0-9][0-9]*' '{print$4}')"
	left_tag_ver="$(echo "${1}" | awk -F'[^0-9][^0-9]*' '{print$4}')"

	right_major="$(echo "${2}" | awk -F'[^0-9][^0-9]*' '{print$1}')"
	right_minor="$(echo "${2}" | awk -F'[^0-9][^0-9]*' '{print$2}')"
	right_patch="$(echo "${2}" | awk -F'[^0-9][^0-9]*' '{print$3}')"
	right_tag="$(echo "${2}" | awk -F'[0-9][0-9]*' '{print$4}')"
	right_tag_ver="$(echo "${2}" | awk -F'[^0-9][^0-9]*' '{print$4}')"

	[ "${left_major}" -gt "${right_major}" ] && return 0
	[ "${left_major}" -lt "${right_major}" ] && return 1
	[ "${left_minor}" -gt "${right_minor}" ] && return 0
	[ "${left_minor}" -lt "${right_minor}" ] && return 1
	[ "${left_patch}" -gt "${right_patch}" ] && return 0
	[ "${left_patch}" -lt "${right_patch}" ] && return 1
	[ -z "${left_tag}" ] && [ -n "${right_tag}" ] && return 1
	[ -n "${left_tag}" ] && [ -z "${right_tag}" ] && return 0
	[ -z "${left_tag}" ] && [ -z "${right_tag}" ] && return 1
	[ "${left_tag}" \> "${right_tag}" ] && return 0
	[ "${left_tag}" \< "${right_tag}" ] && return 1
	[ "${left_tag_ver}" -gt "${right_tag_ver}" ] && return 0
	[ "${left_tag_ver}" -lt "${right_tag_ver}" ] && return 1
	return 1
}

if which brl > /dev/null 2>&1; then
	echo $(brl version)
	echo "Fetching latest commits from repository..."
	if [ -d /bedrock/cache/bedrocklinux-userland ]; then
		cd /bedrock/cache/bedrocklinux-userland
		git pull -q
    else
    	mkdir -p /bedrock/cache
    	cd /bedrock/cache
    	git clone https://github.com/bedrocklinux/bedrocklinux-userland
    	cd bedrocklinux-userland
    	git checkout 0.7beta -q
    fi
    current_version="$(awk '{print$3}' </bedrock/etc/bedrock-release)"
    newest_version=$(awk -F= '/^VERSION=/{print$2}' Makefile | sed 's/[a-z].*$//')-git-$(git log | grep -c "^commit") 
    echo Current Version: "${current_version}"
    echo Newest Version: "${newest_version}"
    if ver_cmp_first_newer_alpha ${current_version} ${newest_version}; then
    	echo "Up to date with the latest commit, nothing to do."
    	exit
    else
    	echo "Building Bedrock Linux version ${newest_version}"
    fi
    # Start the build process
    make SKIPSIGN=true -j $(nproc) VERSION="${newest_version}"
    ./bedrock-linux-${newest_version}-$(uname -m).sh --update
else
	echo "Bedrock Linux is not installed!"
	return
fi