#!/bin/bash
# LinuxGSM update_fivem.sh module
# Author: Daniel Gibbs
# Contributors: https://linuxgsm.com/contrib
# Website: https://linuxgsm.com
# Description: Handles updating of FiveM servers.

moduleselfname="$(basename "$(readlink -f "${BASH_SOURCE[0]}")")"

fn_update_resources() {
	# Download and extract the cfx-server-data base resources.
	fn_fetch_file "https://github.com/citizenfx/cfx-server-data/archive/refs/heads/master.tar.gz" "" "" "" "${tmpdir}" "cfx-server-data.tar.gz" "nochmodx" "norun" "force" "nohash"
	fn_dl_extract "${tmpdir}" "cfx-server-data.tar.gz" "${serverfiles}" "cfx-server-data-master/resources"
}

fn_update_dl() {
	# Download and extract files to tmpdir.
	fn_fetch_file "${remotebuildurl}" "" "" "" "${tmpdir}" "${remotebuildfilename}" "nochmodx" "norun" "force" "nohash"
	rm -rf "${serverfiles:?}/alpine"
	fn_dl_extract "${tmpdir}" "${remotebuildfilename}" "${serverfiles}"
	if [ ! -d "${serverfiles}/resources" ]; then
		fn_update_resources
	fi
	echo "${remotebuild}" > "${localbuildfile}"
	fn_clear_tmp
}

fn_update_localbuild() {
	# Gets local build info.
	fn_print_dots "Checking local build: ${remotelocation}"
	if [ -f "${localbuildfile}" ]; then
		localbuild="$(cat "${localbuildfile}")"
	fi
	if [ -z "${localbuild}" ]; then
		fn_print_error "Checking local build: ${remotelocation}: missing local build info"
		fn_script_log_error "Missing local build info"
		fn_script_log_error "Set localbuild to 0"
		localbuild="0"
	else
		fn_print_ok "Checking local build: ${remotelocation}"
		fn_script_log_pass "Checking local build"
	fi
}

fn_update_remotebuild() {
	# Gets remote build info.
	apiurl="https://changelogs-live.fivem.net/api/changelog/versions/linux/server"
	remotebuildresponse=$(curl -s "${apiurl}")
	remotebuild=$(echo "${remotebuildresponse}" | jq -r '.recommended')
	remotebuildurl=$(echo "${remotebuildresponse}" | jq -r '.recommended_download')
	remotebuildfilename="fx.tar.xz"
	if [ "${firstcommandname}" != "INSTALL" ]; then
		fn_print_dots "Checking remote build: ${remotelocation}"
		# Checks if remotebuild variable has been set.
		if [ -z "${remotebuild}" ] || [ "${remotebuild}" == "null" ] || [ -z "${remotebuildurl}" ] || [ "${remotebuildurl}" == "null" ]; then
			fn_print_fail "Checking remote build: ${remotelocation}"
			fn_script_log_fail "Checking remote build"
			core_exit.sh
		else
			fn_print_ok "Checking remote build: ${remotelocation}"
			fn_script_log_pass "Checking remote build"
		fi
	else
		# Checks if remotebuild variable has been set.
		if [ -z "${remotebuild}" ] || [ "${remotebuild}" == "null" ] || [ -z "${remotebuildurl}" ] || [ "${remotebuildurl}" == "null" ]; then
			fn_print_failure "Unable to get remote build"
			fn_script_log_fail "Unable to get remote build"
			core_exit.sh
		fi
	fi
}

fn_update_compare() {
	fn_print_dots "Checking for update: ${remotelocation}"
	# Update has been found or force update.
	if [ "${localbuild}" != "${remotebuild}" ] || [ "${forceupdate}" == "1" ]; then
		# Create update lockfile.
		date '+%s' > "${lockdir:?}/update.lock"
		fn_print_ok_nl "Checking for update: ${remotelocation}"
		fn_print "\n"
		fn_print_nl "${bold}${underline}Update${default} available"
		fn_print_nl "* Local build: ${red}${localbuild}${default}"
		fn_print_nl "* Remote build: ${green}${remotebuild}${default}"
		if [ -f "${rootdir}/.dev-debug" ]; then
			fn_print_nl "Remote build info"
			fn_print_nl "* apiurl: ${apiurl}"
			fn_print_nl "* remotebuildfilename: ${remotebuildfilename}"
			fn_print_nl "* remotebuildurl: ${remotebuildurl}"
			fn_print_nl "* remotebuild: ${remotebuild}"
		fi
		fn_print "\n"
		fn_script_log_info "Update available"
		fn_script_log_info "Local build: ${localbuild}"
		fn_script_log_info "Remote build: ${remotebuild}"
		fn_script_log_info "${localbuild} > ${remotebuild}"

		if [ "${commandname}" == "UPDATE" ]; then
			unset updateonstart
			fn_update_apply fn_update_dl
			alert="update"
		elif [ "${commandname}" == "CHECK-UPDATE" ]; then
			alert="check-update"
		fi
		alert.sh
	else
		fn_print_ok_nl "Checking for update: ${remotelocation}"
		fn_print "\n"
		fn_print_nl "${bold}${underline}No update${default} available"
		fn_print_nl "* Local build: ${green}${localbuild}${default}"
		fn_print_nl "* Remote build: ${green}${remotebuild}${default}"
		fn_print "\n"
		fn_script_log_info "No update available"
		fn_script_log_info "Local build: ${localbuild}"
		fn_script_log_info "Remote build: ${remotebuild}"
		if [ -f "${rootdir}/.dev-debug" ]; then
			fn_print_nl "Remote build info"
			fn_print_nl "* apiurl: ${apiurl}"
			fn_print_nl "* remotebuildfilename: ${remotebuildfilename}"
			fn_print_nl "* remotebuildurl: ${remotebuildurl}"
			fn_print_nl "* remotebuild: ${remotebuild}"
		fi
	fi
}

localbuildfile="${datadir}/${selfname}-fivem-version"
# The location where the builds are checked and downloaded.
remotelocation="runtime.fivem.net"

if [ "${firstcommandname}" == "INSTALL" ]; then
	fn_update_remotebuild
	fn_update_dl
else
	fn_print_dots "Checking for update"
	fn_print_dots "Checking for update: ${remotelocation}"
	fn_script_log_info "Checking for update: ${remotelocation}"
	fn_update_localbuild
	fn_update_remotebuild
	fn_update_compare
fi