#!/bin/bash

#
# Script for preparing lxd environment and building Hestia packages for all supported distros
# - Run with sudo, not directly as root!
#
# Arguments:
# ./lxd_build_all --cleanup
#     - Stop and delete all containers
#
# ./lxd_build_all --background
#     - Execute the build script on all containers simultaneously
#

# Configs:
# Use focal and jammy instead of "20.04 an 22.04"
oslist=('debian=10,11' 'ubuntu=18.04,focal,jammy')
branch='main'

function setup_container() {
	if [ "$osname" = 'ubuntu' ]; then
		lxc init $osname:$osver "${containername}"
	else
		lxc init images:$osname/$osver "${containername}"
	fi

	mkdir -p "${__DIR__}/build/${containername}"
	chown $user: "${__DIR__}/build/${containername}"

	lxc config set ${containername} raw.idmap "both $user_id $user_gid"
	lxc config device add ${containername} debdir disk path=/opt/hestiacp source=${__DIR__}/build/${containername}
}

cmd=$1
__DIR__="$(cd "$(dirname "${BASH_SOURCE[0]}")" > /dev/null 2>&1 && pwd)" #"

# user=$(logname)
user=$SUDO_USER
user_id=$(id -u $user)
user_gid=$(id -g $user)

if [ -z "$user" ] || [ -z "$user_id" ] || [ -z "$user_gid" ] || [ "$user" = 'root' ]; then
	echo "Script must be run with sudo, not directly as root" && exit 1
fi

if ! which lxd > /dev/null 2>&1; then
	# Use snapd instead
	apt -y install snapd
	snap install lxd
	lxd init --auto

	echo "root:$user_id:1" | sudo tee -a /etc/subuid
	echo "root:$user_gid:1" | sudo tee -a /etc/subgid
fi

for osdef in "${oslist[@]}"; do
	osname=${osdef%%=*}
	osversions=$(echo ${osdef##*=} | tr "," "\n")

	for osver in $osversions; do

		containername="hst-${osname}-${osver/\./}"
		container_ip=""
		echo "Container $containername"

		if [ "$cmd" = '--cleanup' ]; then
			# Stop and delete container
			lxc stop $containername
			lxc rm $containername
			continue
		fi

		if ! lxc info $containername > /dev/null 2>&1; then
			setup_container
		fi

		lxc start $containername > /dev/null 2>&1

		# Wait for container to start
		while [ -z "$container_ip" ]; do
			sleep 1
			container_ip=$(lxc list --format csv -c 4,n | grep ",$containername$" | cut -d "," -f 1)
		done
		echo $container_ip

		cp -f "${__DIR__}/lxd_compile.sh" "${__DIR__}/build/${containername}/lxd_compile.sh"

		if [ "$cmd" = '--background' ]; then
			# Run build script in background
			lxc exec $containername -- /opt/hestiacp/lxd_compile.sh $branch > /dev/null 2>&1 &
		else
			lxc exec $containername -- /opt/hestiacp/lxd_compile.sh $branch
		fi

	done
done