#!/bin/bash

# Copyright 2015 by Leipzig University Library, http://ub.uni-leipzig.de
#                   The Finc Authors, http://finc.info
#                   Martin Czygan, <martin.czygan@uni-leipzig.de>
#
# This file is part of some open source application.
#
# Some open source application 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.
#
# Some open source application 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Foobar.  If not, see <http://www.gnu.org/licenses/>.
#
# @license GPL-3.0+ <http://spdx.org/licenses/GPL-3.0+>

set -eu

OUTPUT=$(taskoutput "$@")

if [[ ! -f "$OUTPUT" ]]; then
    read -p "output does not exists, should we try to run this task now [y/N]? " -r
    if [[ $REPLY =~ ^[Yy]$ ]]
    then
        taskdo "$@"
    else
        exit 1
    fi
fi

fastzcat() {
    if hash unpigz 2>/dev/null; then
        unpigz -c "$@"
    else
        if [[ "$OSTYPE" == "darwin"* ]]; then
            gzcat "$@"
        else
            zcat "$@"
        fi
    fi
}

if [[ "$OUTPUT" == *mrc ]]; then
    yaz-marcdump "$OUTPUT"
elif [[ "$OUTPUT" == *gz ]]; then
    fastzcat "$OUTPUT"
else
    cat "$OUTPUT"
fi
