#!/usr/bin/env bash
#
# SPDX-License-Identifier: GPL-2.0
#
# Copyright (c) 2013-2023 Igor Pecovnik, igor@armbian.com
#
# This file is a part of the Armbian Build Framework
# https://github.com/armbian/build/

function obtain_and_check_host_release_and_arch() {

	obtain_hostrelease_only

	# obtain the host arch, from dpkg
	declare -g HOSTARCH
	HOSTARCH="$(dpkg --print-architecture)"
	display_alert "Build host architecture" "${HOSTARCH:-(unknown)}" "info"

	case "${HOSTARCH}" in
		amd64 | arm64) ;; # officially supported
		armhf | riscv64)  # experimental
			display_alert "EXPERIMENTAL build host support" "${HOSTARCH}" "wrn"
			;;
		*)
			display_alert "Please read documentation to set up proper compilation environment"
			display_alert "https://www.armbian.com/using-armbian-tools/"
			exit_with_error "Running this tool on '${HOSTARCH}' build host is not supported"
			;;
	esac

	# Ubuntu Jammy x86_64 or arm64 is the only fully supported host OS release
	# Using Docker/VirtualBox is the only supported way to run the build script on other Linux distributions
	#
	# NO_HOST_RELEASE_CHECK overrides the check for a supported host system
	# Disable host OS check at your own risk. Any issues reported with unsupported releases will be closed without discussion
	if [[ -z $HOSTRELEASE || "bookworm trixie sid jammy kinetic lunar vanessa vera victoria" != *"$HOSTRELEASE"* ]]; then
		if [[ $NO_HOST_RELEASE_CHECK == yes ]]; then
			display_alert "You are running on an unsupported system" "${HOSTRELEASE:-(unknown)}" "wrn"
			display_alert "Do not report any errors, warnings or other issues encountered beyond this point" "" "wrn"
		else
			exit_with_error "Unsupported build system: '${HOSTRELEASE:-(unknown)}'"
		fi
	fi
}

function obtain_hostrelease_only() {
	# obtain the host release either from os-release or debian_version
	declare -g HOSTRELEASE
	HOSTRELEASE="$(cat /etc/os-release | grep VERSION_CODENAME | cut -d"=" -f2)"
	[[ -z $HOSTRELEASE ]] && HOSTRELEASE="$(cut -d'/' -f1 /etc/debian_version)"
	display_alert "Build host OS release" "${HOSTRELEASE:-(unknown)}" "info"
}