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#!/bin/bash
# Copyright (C) 2014 Joseph Graham <joseph@t67.eu>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# This script finds any updated packages and calls
# `make_indivudual_torrent' for each of them.

username=$( id -un )

case "${username}" in
    repo | root )
        true
        ;;
    * )
        echo "This script must be run as repo user or root user."
        echo "ByeBye!"
        exit 1
        ;;
esac

# pacman doesn't support multiple different packages of the same name,
# so it's OK to just stuff all the torrents into a single directory.
script_directory="$(dirname "$(readlink -e "$0")")/.."
. "$(dirname "$(readlink -e "$0")")/../config"
public_location="${root_dir}/"
torrent_location="${root_dir}/torrents/"

cd "${torrent_location}"

# Find any directories that might have packages in then
find "${public_location}" -name 'os' -type 'd' |
while read dir
do
    # Find any packages
    find "${dir}" -name '*\.pkg\.tar\.xz' |
    while read pkg
    do
	pkg_name="${pkg##*/}"

        if [[ -h "${pkg}" ]]  # check if it's a symbolic link
        then
            # We get the target of the symlink
            pkg=$( readlink -f "${pkg}" )
        fi

        # If a .torrent file does not already exist for this package, we call
        # `make_individual_torrent' to make it.
	if ! [[ -f "${torrent_location}${pkg_name}.torrent" ]]
	then
            "$script_directory/make_individual_torrent" "${pkg}" "${public_location}"
	fi
    done
done

if [[ "${username}" == root ]]
then
    chown repo *
fi