# Copyright (C) 2005 Mandriva
#                    Olivier Blin <oblin@mandriva.com>
# Copyright (C) 2017-2018 Mageia
#                    Martin Whitaker <mageia@martin-whitaker.me.uk>
#
# 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 2, 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA.

# SYNOPSIS
# --------
# This package provides routines to read in and check the user-supplied
# settings and configuration files.

package MGA::DrakISO::Config;

use strict;

use MDK::Common;
use Pod::Usage;
use Cwd qw(abs_path);

use Exporter;
our @ISA = qw(Exporter);
our @EXPORT = qw(read_config check_config complete_config dump_config);

sub read_config {
    my ($build, $config_root, $config_path, $settings_path) = @_;

    $config_root = abs_path($config_root);
    print "Using $config_root as directory root\n";

    if (substr($config_path, 0, 1) ne '/') {
        $config_path = $config_root . '/' . $config_path;
    }
    -e $config_path or die "ERROR: $config_path does not exist\n";

    if (substr($settings_path, 0, 1) ne '/') {
        $settings_path = $config_root . '/' . $settings_path;
    }
    -e $settings_path or die "ERROR: $settings_path does not exist\n";

    add2hash($build->{settings} ||= {}, { getVarsFromSh($settings_path) });

    #- don't use do(), since it can't see lexicals in the enclosing scope
    my $cfg = eval(cat_($config_path)) or die "ERROR: unable to load $config_path: $@\n";
    put_in_hash($build, $cfg);
    print "Loaded $config_path as config file\n";

    $build->{settings}{config_root} = $config_root;
}

sub check_config {
    my ($build) = @_;
    unless (keys(%$build)) {
        warn "no build definition\n";
        Pod::Usage::pod2usage();
    }
    #- check for minimum requirements
    $build->{settings}{arch}
      or die "ERROR: you must specify an architecture\n";
    $build->{media}{label}
      or die "ERROR: you must supply a media label\n";
}

sub complete_config {
    my ($build) = @_;

    $build->{settings}{workdir} = abs_path($build->{settings}{workdir} || '.');

    mkdir_p($build->get_build_dir);
    mkdir_p($build->get_chroot_dir);
}

sub dump_config {
    my ($build) = @_;
    use Data::Dumper;
    print Data::Dumper->Dump([ $build ], [ "build" ]);
}

1;