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#!/bin/bash

. "$(dirname $0)/../config"
. "$(dirname $0)/../db-functions"

clean_pkg() {
	local pkg
	local target

	if ! ${CLEANUP_DRYRUN}; then
		for pkg in "$@"; do
			if [ -h "$pkg" ]; then
				rm -f "$pkg" "$pkg.sig"
			else
				mv -f "$pkg" "$CLEANUP_DESTDIR"
				if [ -e "$pkg.sig" ]; then
					mv -f "$pkg.sig" "$CLEANUP_DESTDIR"
				fi
				touch "${CLEANUP_DESTDIR}/${pkg##*/}"
			fi
		done
	fi
}

script_lock

for repo in ${PKGREPOS[@]}; do
	for arch in ${ARCHES[@]}; do
		repo_lock ${repo} ${arch} || exit 1
	done
done

${CLEANUP_DRYRUN} && warning 'dry run mode is active'

for repo in ${PKGREPOS[@]}; do
	for arch in ${ARCHES[@]}; do
		if [ ! -f "${FTP_BASE}/${repo}/os/${arch}/${repo}${DBEXT}" ]; then
			continue
		fi
		# get a list of actual available package files
		find "${FTP_BASE}/${repo}/os/${arch}" -xtype f -name "*${PKGEXT}" -printf '%f\n' | sort > "${WORKDIR}/repo-${repo}-${arch}"
		# get a list of package files defined in the repo db
		bsdtar -xOf "${FTP_BASE}/${repo}/os/${arch}/${repo}${DBEXT}" | awk '/^%FILENAME%/{getline;print}' | sort > "${WORKDIR}/db-${repo}-${arch}"

		missing_pkgs=($(comm -13 "${WORKDIR}/repo-${repo}-${arch}" "${WORKDIR}/db-${repo}-${arch}"))
		if [ ${#missing_pkgs[@]} -ge 1 ]; then
			error "Missing packages in [${repo}] (${arch})..."
			for missing_pkg in ${missing_pkgs[@]}; do
				msg2 "${missing_pkg}"
			done
		fi

		old_pkgs=($(comm -23 "${WORKDIR}/repo-${repo}-${arch}" "${WORKDIR}/db-${repo}-${arch}"))
		if [ ${#old_pkgs[@]} -ge 1 ]; then
			msg "Removing old packages from [${repo}] (${arch})..."
			for old_pkg in ${old_pkgs[@]}; do
				msg2 "${old_pkg}"
				clean_pkg "${FTP_BASE}/${repo}/os/${arch}/${old_pkg}"
			done
		fi
	done
done

# get a list of all available packages in the pacakge pool
find "$FTP_BASE/${PKGPOOL}" -name "*${PKGEXT}" -printf '%f\n' | sort > "${WORKDIR}/pool"
# create a list of packages in our db
cat "${WORKDIR}/db-"* | sort -u > "${WORKDIR}/db"

old_pkgs=($(comm -23 "${WORKDIR}/pool" "${WORKDIR}/db"))
if [ ${#old_pkgs[@]} -ge 1 ]; then
	msg "Removing old packages from package pool..."
	for old_pkg in ${old_pkgs[@]}; do
		msg2 "${old_pkg}"
		clean_pkg "$FTP_BASE/${PKGPOOL}/${old_pkg}"
	done
fi

old_pkgs=($(find ${CLEANUP_DESTDIR} -type f -name "*${PKGEXT}" -mtime +${CLEANUP_KEEP} -printf '%f\n'))
if [ ${#old_pkgs[@]} -ge 1 ]; then
	msg "Removing old packages from the cleanup directory..."
	for old_pkg in ${old_pkgs[@]}; do
		msg2 "${old_pkg}"
		if ! ${CLEANUP_DRYRUN}; then
			rm -f "${CLEANUP_DESTDIR}/${old_pkg}"
			rm -f "${CLEANUP_DESTDIR}/${old_pkg}.sig"
		fi
	done
fi

for repo in ${PKGREPOS[@]}; do
	for arch in ${ARCHES[@]}; do
		repo_unlock ${repo} ${arch}
	done
done

script_unlock