#!/usr/bin/env bash

# CONSTANTS

BASEDIR=$(dirname "$0")
CONTAINER=''
SOURCE_FILE=''
DESTINATION_FOLDER=''

# FUNCTIONS

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

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

		shift 1 # Move to the next argument
	done

	[[ -n $CONTAINER ]] || [[ -n $SOURCE_FILE ]] || [[ -n $DESTINATION_FOLDER ]] || (usage && exit 1)
}

function pull {
	local vmid=$($BASEDIR/../bin/pct-lookup "$CONTAINER")
	pct pull $vmid "$SOURCE_FILE" "$DESTINATION_FOLDER/$(basename $SOURCE_FILE)"
}

function normalize_source_file {
	local directory=$(dirname $SOURCE_FILE)
	[[ $directory =~ ^\.$ ]] && SOURCE_FILE="/root/$SOURCE_FILE"

	[[ -z $DESTINATION_FOLDER ]] && DESTINATION_FOLDER=.
}

# MAIN

set -Eue
parse_options $*
normalize_source_file
pull