#!/usr/bin/env bash

#
# This file is part of the LibreOffice project.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#

usage()
{
    echo "Helper script to unpack the LO source tarballs"
    echo
    echo "Usage: ${0##*/} [--help] start-dir tarball..."
    echo
    echo "Options:"
    echo
    echo "	--help 		 this help"
    echo "	start-dir	 path where the sources are unpacked (bootstrap directory)"
    echo "      tarball          list of LO source tarball that need to be unpacked"
}

start_dir=
tarballs=

while test -n "$1" ; do
    case "$1" in
	--help)
	    usage
	    exit 0;
	    ;;
	--download)
	    download="yes"
	    ;;
	-*)
	    echo "Error: unknown option: $1"
	    exit 1;
	    ;;
	*)
	    if test -z "$start_dir" ; then
		start_dir="$1"
	    else
	        tarballs="$tarballs $1"
	    fi
	    ;;
    esac
    shift
done

if test -z "$start_dir" ; then
    echo "Error: Please, define where to unpack sources, try --help"
fi

if ! test -f $start_dir/Repository.mk ; then
    echo "Error: $start_dir is not a valid LibreOffice core source directory"
    exit 1;
fi

if test ! -f $start_dir/sources.ver -o -d $start_dir/.git ; then
    echo "Warning: sources are from git and not from tarball"
    echo "         Do nothing."
    exit 0;
fi

lo_src_dir="$start_dir/src"
mkdir -p "$lo_src_dir"

for tarball in $tarballs ; do
    tarname=`basename $tarball | sed -e "s/\.tar\..*//"`
    if test -d $lo_src_dir/$tarname ; then
        echo "Warning: $lo_src_dir/$tarname already exists => skipping"
        continue;
    fi

    echo "Unpacking $tarname..."
    echo mkdir -p "$lo_src_dir/$tarname"
    if ! mkdir -p "$lo_src_dir/$tarname" ; then
        echo "Error: could not create directory $lo_src_dir/$tarname"
    fi
    echo tar -xf "$tarball" -C "$lo_src_dir/$tarname" --strip-components=1
    if ! tar -xf "$tarball" -C "$lo_src_dir/$tarname" --strip-components=1; then
        echo "Error: could not unpack $tarname"
        exit 1
    fi

    # create symlinks for module directories; ignore git-hooks directory
    while read -r dir; do
        ln -sf "src/${tarname}/$(basename "$dir")" "$start_dir"
    done < <(find "$lo_src_dir/$tarname" -mindepth 1 -maxdepth 1 -type d -path $lo_src_dir/$tarname/git-hooks)
done