#!/usr/bin/env bash

# The Docker Image Mirror script.
# Designed to be used in Gitlab CI.

WHAT_TO_MIRROR=()
REGISTRY_TO_MIRROR=registry.gitlab.pztrn.name/containers/mirror

for file in $(ls ./images/*.sh); do
	echo "Importing ${file}..."
	WHAT_TO_MIRROR=( ${WHAT_TO_MIRROR} $(bash ${file}) )
done

echo ${WHAT_TO_MIRROR[@]}

function mirror() {
	image=$1
	image_name=$(echo "${image}" | cut -d":" -f 1)
	image_version=$(echo "${image}" | cut -d":" -f 2)

	echo -n "Mirroring ${image}... "
	docker pull "${image}" &> /dev/null
	if [ $? -ne 0 ]; then
		echo "FAIL"
		exit
	fi

	image_hash=$(docker images -a | grep "${image_name}" | grep "${image_version}" | awk {' print $3 '})
	echo -n "${image_hash} received... "

	docker tag "${image_hash}" "${REGISTRY_TO_MIRROR}/${image}"
	if [ $? -ne 0 ]; then
		echo "FAIL"
		exit
	fi

	echo -n "pushing... "
	docker push "${REGISTRY_TO_MIRROR}/${image}"
	if [ $? -ne 0 ]; then
		echo "FAIL"
		exit
	fi

	echo "OK"

	docker image rm "${image}"
}

# Mirror images.
for image in ${WHAT_TO_MIRROR[@]}; do
	mirror ${image}
done