setup.sh

#!/bin/sh -e
DRYRUN="${1}"

die()
{
	echo "FAILED! $@."
	exit 1
}

do_env()
{
	test -e .env && return || true
	rm -f .env  ## in case of broken symlink
	echo "UID=$(id -u)" > .env
	echo "GID=$(id -g)" >> .env
}

build()
{
	CONTAINER_NAME="$(grep "container_name:" -r "${1}/docker-compose.yml" | awk -F: '{ print $2 }' | tr -d ' ')"
	cd "${1}"
	if [ -n "${2}" ]; then
		docker-compose build --no-cache
	else
		docker-compose up --exit-code-from "${CONTAINER_NAME}"
	fi
	cd -
}

link()
{
	src="${1}" ## source to link
	dst="${2}" ## target directory, where to place the link
	test -f "${src}" || die "file '${src}' is missing or not accessable"
	test -L "${dst}/$( basename ${src} )" && return || true
	cd "${dst}"
	ln -s "${src}" .
	cd -
}

## MAIN
if [ -d ".git" ]; then
	## if this is a git repo, check if we're on branch "main", then abort
	if [ "main" = "$( git rev-parse --abbrev-ref HEAD )" ]; then
		die "THIS IS MAIN, PLEASE CHANGE TO ONE OF THE GIT BRANCHES"
	fi
fi

TOPDIR="$(pwd)"
test -z "${DOCKERDIR}" && DOCKERDIR="docker"
test -z "${DOWNLOADDIR}" && DOWNLOADDIR="download"
IMAGE="$( grep "^FROM" -HIrn ${DOCKERDIR}/build_context/Dockerfile | awk '{ print $NF }' )"
VERSION="$( echo ${IMAGE} | awk -F'-' '{ if ($NF == "nightly") {print $(NF-1)} else {print $NF} }' )"

CONTAINER="$( docker images | grep "${IMAGE}" | awk '{print $3}' )" || true
if [ -z "${CONTAINER}" ]; then
	## container is not around, build
	DO_BUILD=1
else
	## container around, start
	cd "${DOCKERDIR}"
	do_env
	docker-compose -f ./docker-compose.yml run --rm "${IMAGE}" /bin/bash
	exit 0
fi

if [ -n "${DO_BUILD}" ]; then
	test -f ${TOPDIR}/${DOWNLOADDIR}/petalinux-v${VERSION}-*-installer.run || die "No petalinux installer provided! Please, put a petalinux-v${VERSION}-*-installer.run  in '${TOPDIR}/${DOWNLOADDIR}'"
	test -f ${TOPDIR}/${DOWNLOADDIR}/Xilinx_Unified_${VERSION}_*_Lin64.bin || die "No Xilinx_Unified_${VERSION}_*_Lin64.bin file provided in '${TOPDIR}/${DOWNLOADDIR}'"
fi

if [ -n "${DO_BUILD}" ]; then
	link "${TOPDIR}/${DOWNLOADDIR}"/.env "${TOPDIR}/${DOCKERDIR}"/
	mv ${TOPDIR}/${DOWNLOADDIR}/petalinux-v${VERSION}-*-installer.run "${TOPDIR}/${DOCKERDIR}/build_context/"
	mv ${TOPDIR}/${DOWNLOADDIR}/Xilinx_Unified_${VERSION}_*_Lin64.bin "${TOPDIR}/${DOCKERDIR}/build_context/"
	build "${DOCKERDIR}" "${DRYRUN}"
	cd "${TOPDIR}/${DOCKERDIR}"
fi

echo "READY."