#! /bin/bash

R_VERSION=4.0.5
PACKAGES="mlr3filters stringi"

# install sysdeps for all packages
for w in $PACKAGES; do

	### dynamic start

	export PACKAGE=$w
	export R_LIBS_USER=/root/user_lib
	mkdir -p /root/user_lib

	export R_VERSION=$(R --version | grep -Eo '[0-9.]+' | head -n 1)
	export R_VERSION_MINOR=$(echo "$R_VERSION" | cut -d. -f1,2)
	export ARCH=$(arch)

	DIST_FAM=$(grep 'ID_LIKE=' /etc/os-release | cut -d'=' -f2 | tr -d '"')
	if [[ $DIST_FAM == "debian" ]]; then
		export CODENAME=$(grep 'VERSION_CODENAME=' /etc/os-release | cut -d'=' -f2 | tr -d '"')
	elif [[ $DIST_FAM =~ ^(rhel) ]]; then
		if [[ $(grep 'PLATFORM_ID=' /etc/os-release | cut -d'=' -f2 | tr -d '"') == "platform:el9" ]]; then
			export CODENAME=rhel9
		elif [[ $(grep 'PLATFORM_ID=' /etc/os-release | cut -d'=' -f2 | tr -d '"') == "platform:el8" ]]; then
			export CODENAME=rhel8
		fi
	fi

	git clone https://github.com/cran/"${PACKAGE}".git
	cd "${PACKAGE}"

	# also installs system dependencies
	# FIXME: auto-detection does not work on arm-based systems
	export PKG_SYSREQS_PLATFORM=redhat-9
	export PKG_SYSREQS=TRUE
	export PKG_SYSREQS_VERBOSE=TRUE
	R -q -e 'options(repos = c(CRAN="https://stat.ethz.ch/CRAN/")); pak::local_install_dev_deps()'

	cd ..
done

# build binaries from tags
for w in $PACKAGES; do

	# this runs in parallel
	# run() {
	export PACKAGE=$w
	export R_LIBS_USER=/root/user_lib

	export R_VERSION=$(R --version | grep -Eo '[0-9.]+' | head -n 1)
	export R_VERSION_MINOR=$(echo "$R_VERSION" | cut -d. -f1,2)
	export ARCH=$(arch)
	DIST_FAM=$(grep 'ID_LIKE=' /etc/os-release | cut -d'=' -f2 | tr -d '"')
	if [[ $DIST_FAM == "debian" ]]; then
		export CODENAME=$(grep 'VERSION_CODENAME=' /etc/os-release | cut -d'=' -f2 | tr -d '"')
	elif [[ $DIST_FAM =~ ^(fedora) ]]; then
		if [[ $(grep 'PLATFORM_ID=' /etc/os-release | cut -d'=' -f2 | tr -d '"') == "platform:el9" ]]; then
			export CODENAME=rhel9
		elif [[ $(grep 'PLATFORM_ID=' /etc/os-release | cut -d'=' -f2 | tr -d '"') == "platform:el8" ]]; then
			export CODENAME=rhel8
		fi
	fi

	# example CRAN dir structure: https://cran.r-project.org/src/contrib
	mkdir -p /root/__linux__/"${CODENAME}"/"${R_VERSION_MINOR}"/latest/src/contrib/Archive
	mkdir -p /root/src/contrib/Archive

	cd "${PACKAGE}"
	# NB: we start with the latest tag as we make the greedy assumption that the latest release has all deps of the previous ones
	export TAGS=$(git tag -l --sort=-v:refname)

	for i in $TAGS; do
		git checkout -q -f $i

		# the tag might differ from the actual version
		TAG=$(grep "Version" DESCRIPTION | grep -Po "([0-9]+(\.[0-9]+)+)")

		# don't install syslibs again
		export PKG_SYSREQS=FALSE
		export PKG_SYSREQS_VERBOSE=FALSE

		# build source
		EXISTS=$(find /root/src/contrib/ | grep -P "${PACKAGE}_${TAG}")
		if [[ -n $EXISTS ]]; then
			printf "[Skip] ${PACKAGE} '${TAG}' (source), already exists.\n"
			# continue
		else
			printf "[Build] ${PACKAGE} '${TAG}' (source)\n"
		fi
		OUTPUT=$(R -q -e 'options(repos = c(CRAN="https://stat.ethz.ch/CRAN/")); pkgbuild::build(binary = FALSE, vignettes = FALSE, dest_path = "/root/src/contrib")')

		if [[ $(printf "$OUTPUT" | grep "Error") != "" ]]; then
			printf "[Error] ${PACKAGE} '${TAG}' (binary)\n"
			printf $OUTPUT >/root/__linux__/"${CODENAME}"/"${R_VERSION_MINOR}"/latest/src/contrib/"${PACKAGE}"_"${TAG}"_error
			continue
		else
			# build binary
			EXISTS=$(find /root/__linux__/"${CODENAME}"/"${R_VERSION_MINOR}"/latest/src/contrib/ | grep -P "${PACKAGE}_${TAG}")
			if [[ -n $EXISTS ]]; then
				printf "[Skip] ${PACKAGE} '${TAG}' (binary), already exists.\n"
				continue
			else
				printf "[Build] ${PACKAGE} '${TAG}' (binary)\n"
			fi
			R -q -e 'options(repos = c(CRAN="https://stat.ethz.ch/CRAN/")); pak::local_install_dev_deps()'
			R -q -e 'options(repos = c(CRAN="https://stat.ethz.ch/CRAN/")); pkgbuild::build(binary = TRUE, vignettes = FALSE, dest_path = sprintf("/root/__linux__/%s/%s/latest/src/contrib", Sys.getenv("CODENAME"), Sys.getenv("R_VERSION_MINOR")))'
			# remove _aarch64-unknown-linux-gnu part in filename
			rsync -a /root/__linux__/"${CODENAME}"/"${R_VERSION_MINOR}"/latest/src/contrib/"${PACKAGE}"_"${TAG}"*.tar.gz /root/__linux__/"${CODENAME}"/"${R_VERSION_MINOR}"/latest/src/contrib/"${PACKAGE}"_"${TAG}".tar.gz
		fi

		# create archive dir for package
		mkdir -p /root/__linux__/"${CODENAME}"/"${R_VERSION_MINOR}"/latest/src/contrib/Archive/"${PACKAGE}"
		# list all files in dir
		all_versions=$(ls /root/__linux__/"${CODENAME}"/"${R_VERSION_MINOR}"/latest/src/contrib/"${PACKAGE}"*.tar.gz)
		# Find the latest version
		latest_version=$(ls /root/__linux__/"${CODENAME}"/"${R_VERSION_MINOR}"/latest/src/contrib/"${PACKAGE}"*.tar.gz | sort -V | tail -n 1)

		# Move all other versions to the Archived directory
		for file in $all_versions; do
			if [ "$file" != "$latest_version" ]; then
				rsync -a "$file" /root/__linux__/"${CODENAME}"/"${R_VERSION_MINOR}"/latest/src/contrib/Archive/"${PACKAGE}"/
			fi
		done

		# list all files in dir
		all_versions=$(ls /root/src/contrib/"${PACKAGE}"*.tar.gz)
		# Find the latest version
		latest_version=$(ls /root/src/contrib/"${PACKAGE}"*.tar.gz | sort -V | tail -n 1)

		# create archive dir for package
		mkdir -p /root/src/contrib/Archive/"${PACKAGE}"
		# Move all other versions to the Archived directory
		for file in $all_versions; do
			if [ "$file" != "$latest_version" ]; then
				rsync -a "$file" /root/src/contrib/Archive/"${PACKAGE}"/
			fi
		done

	done

	cd ..
	rm -rf /root/"${PACKAGE}"
	# }
	# run &
done

# clean lefover files with wroning naming
find /root/__linux__/rhel9/4.0/latest/src/contrib -type f -name '*aarch64-unknown-linux*' -delete
find /root/src/contrib/ -type f -name '*aarch64-unknown-linux*' -delete

# src
R -q -e "cranlike::add_PACKAGES(list.files('/root/src/contrib/', pattern='tar.gz'), '/root/src/contrib/')"
R -q -e "cranlike::package_versions('/root/src/contrib/')"

# bin
R -q -e "cranlike::add_PACKAGES(list.files('/root/__linux__/${CODENAME}/${R_VERSION_MINOR}/latest/src/contrib/', pattern='tar.gz'), '/root/__linux__/${CODENAME}/${R_VERSION_MINOR}/latest/src/contrib/')"
R -q -e "cranlike::package_versions('/root/__linux__/${CODENAME}/${R_VERSION_MINOR}/latest/src/contrib/')"