build

#!/usr/bin/env bash

set -euxo pipefail

scriptdir="$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
distdir="${scriptdir}/dist"
workdir="${scriptdir}/workdir"
iconsdir="${workdir}/icons"
outdir="${workdir}/out"
rootfsdir="${workdir}/rootfs"
mkdir -p "${workdir}"

# Download Alma cloud init image
image="AlmaLinux-8-GenericCloud-latest.x86_64.qcow2"
url="https://repo.almalinux.org/almalinux/8/cloud/x86_64/images/${image}"
image_path="${workdir}/${image}"

if [ -f "${image_path}" ]; then
	echo "Alma cloud-init image exists in workdir. Skipping download."
else
	echo "Downloading ${url}"
	curl --silent --output "${image_path}" "${url}"
fi

# Download WSLDL
url="https://github.com/yuk7/wsldl/releases/latest/download/icons.zip"
wsldl_path="${workdir}/Alma-8.exe"

if [ -f "${wsldl_path}" ]; then
	echo "WSLDL exists in workdir. Skipping download."
else
	echo "Downloading ${url}"
	rm -rf "${iconsdir}"
	mkdir -p "${iconsdir}"
	curl --silent --location --output "${iconsdir}/icons.zip" "${url}"
	unzip -d "${iconsdir}" "${iconsdir}/icons.zip"
	mv "${iconsdir}/Alma.exe" "${wsldl_path}"
fi

# Extract rootfs from image
sudo rm -rf "${rootfsdir}"
sudo mkdir -p "${rootfsdir}"
echo "Extracting rootfs"
# Unmount and remount the image
sudo guestunmount --quiet --no-retry "${rootfsdir}" || true
sudo guestmount --add "${image_path}" --inspector --ro "${rootfsdir}"

# Archive the rootfs
echo "Compressing rootfs"
rootfs_tar="${workdir}/install.tar.gz" 
sudo tar -zcpf ${rootfs_tar} -C "${rootfsdir}" .
sudo chown "$(id -un)" "${rootfs_tar}" 

# Unmount the image
sudo guestunmount "${rootfsdir}"

# Create the download bundle
echo "Creating the download bundle"
rm -rf "${outdir}"
mkdir -p "${outdir}"
mv "${rootfs_tar}" "${wsldl_path}" "${outdir}"

dist_file="${distdir}/Alma-8.zip"
rm -rf "${distdir}"
mkdir -p  "${distdir}"

# quirk with zip where in -j doesn't always exclude absolute paths 
pushd "${outdir}"
zip "${dist_file}" ./*
popd