#!/usr/bin/env bash

# CONSTANTS

BASEDIR=$(dirname "$0")
CONTAINER=''
SYMPA_ARCHIVE=''
SYMPA_NET0=''

# FUNCTIONS

function usage {
	echo "$(basename "$0") <CONTAINER_NAME>"
}

function parse_options {
	while [[ $# -gt 0 ]]; do
		case "$1" in
			--help | -h)
				usage && exit 0
				;;
			*)
				if [[ -z $CONTAINER ]]; then
					CONTAINER=$1
				else
					echo >&2 "Unknown option: $1" && usage && exit 2
				fi
				;;
		esac

		shift 1 # Move to the next argument
	done
	[[ -z $CONTAINER ]] && usage && exit 1 || true
}

function halt_on_error {
	>&2 echo "ERROR: $1"
	exit ${2:-1}
}

function assert_proxmox {
	grep -q ^ID=debian /etc/os-release || halt_on_error 'distro debian required!' 2
	command -v pct > /dev/null || halt_on_error 'command `pct` not found!' 3
}

function assert_container_sympa_debian9 {
	miaou-exec $CONTAINER -- grep -q ^9 /etc/debian_version
	miaou-exec $CONTAINER -- test -d /etc/sympa
}

function export_sympa {
	miaou-exec $CONTAINER -- bash << EOF
	rm sympa_{export,purge}.bash
	wget https://git.artcode.re/cemea/monit-sympa/raw/branch/main/sympa/resources/tools/sympa_{export,purge}.bash
	chmod +x sympa_{export,purge}.bash
	./sympa_purge.bash
	./sympa_export.bash
EOF
	SYMPA_ARCHIVE=$(miaou-exec $CONTAINER -- find -maxdepth 1 -type f -name "*.sympa" | sort -rn | head -1)
	miaou-pull $CONTAINER $SYMPA_ARCHIVE
}

function get_container_net0 {
	OLD_VMID=$(pct-lookup $CONTAINER)
	SYMPA_NET0=$(pct config $OLD_VMID | grep ^net0 | cut -d ' ' -f2)
	echo $SYMPA_NET0
}

function rename_old_container {
	pct set $OLD_VMID --delete net0
	pct-rename $CONTAINER $CONTAINER.9
}

function create_new_container {
	miaou-create $CONTAINER

	local vmid=$(pct-lookup $CONTAINER)
	local net1="net1: $(pct config $vmid | grep ^net0 | cut -d ' ' -f2 | sed 's/name=eth0/name=eth1/')"
	pct set $vmid --net0 $SYMPA_NET0
	pct set $vmid --net1 $net1
}

function import_from_archive {
	"$BASEDIR"/miaou-install-from-import-sympa $CONTAINER $SYMPA_ARCHIVE
}

# MAIN

set -Eue
parse_options $*
assert_proxmox
assert_container_sympa_debian9
export_sympa
get_container_net0
rename_old_container
create_new_container
import_from_archive

# 8. fix external origin
# 		allowed_external_origin *
# 		(https://gitlab.cemea.org/cemeaweb/khazad-dum/-/issues/110)