#!/usr/bin/perl -w
# -*- perl -*-

#
# $Id: we_group,v 1.1 2004/05/11 15:01:51 eserte Exp $
# Author: Slaven Rezic
#
# Copyright (C) 2002, 2004 Slaven Rezic.
# This is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License, see the file COPYING.
#
# Mail: slaven@rezic.de
# WWW:  http://we-framework.sourceforge.net
#

use Getopt::Long;

my @args;
my $class = "WE::DB::ComplexUser";
my $force_dd;
my $rootdir = ".";
my $userdb_file;

Getopt::Long::config('pass_through', 'no_auto_abbrev');
GetOptions("class=s" => \$class,
	   "forcedd|forcedatadumper!" => \$force_dd,
	   "rootdir=s" => \$rootdir,
	   "userdb=s" => \$userdb_file,
	  );
Getopt::Long::config('no_pass_through');

my $command = shift @ARGV;
my %cmdarg;
if ($command =~ /^-/) {
    usage("Wrong command line option $command");
} elsif ($command eq 'show') {
} elsif ($command =~ /^(add|add-if-not-exists)$/) {
    if (!GetOptions('g|group=s' => \$cmdarg{Group},
		    'desc|description=s' => \$cmdarg{Description},
		   )) {
	usage("wrong arguments for add");
    }
} elsif ($command =~ /^(del|delete)$/) {
    if (!GetOptions('g|group=s' => \$cmdarg{Group},
		   )) {
	usage("wrong arguments for del");
    }
    $command = "del";
} elsif ($command =~ /^(update|change)$/) {
    if (!GetOptions('g|group=s' => \$cmdarg{Group},
		    'desc|description=s' => \$cmdarg{Description},
		   )) {
	usage("wrong arguments for update");
    }
    $command = "update";
} else {
    usage("Invalid command $command");
}

if (!defined $userdb_file) {
    if (-d $rootdir) {
	$userdb_file = "$rootdir/userdb.db";
    } else {
	die "$rootdir is not a directory";
    }
}

if (@ARGV) {
    die "Extra arguments: @ARGV";
}

eval 'require ' . $class; die $@ if $@;

# Check if the file exists already and has the correct format
if (-e $userdb_file) {
    my $db;
    # XXX why is this eval not quiet???
    eval {
	$db = $class->new(undef, $userdb_file, -connect => 1, -readonly => 1);
    };
    if ($@ || !$db) {
	#warn $@;
    } else {
	die "Wrong class for $userdb_file?" if !$db->check_data_format;
    }
}

my $db = $class->new(undef, $userdb_file);
die "Can't open $class database from $userdb_file" if !$db;

if ($command eq 'show') {
    my %g = map { ($_, $db->get_group_definition($_)) } $db->get_all_groups;
    if (!$force_dd && eval { require YAML }) {
	print YAML::Dump(\%g), "\n";
    } else {
	require Data::Dumper;
	print Data::Dumper->new([\%g],[])->Indent(1)->Useqq(1)->Dump;
    }

} elsif ($command eq 'add-if-not-exists') {
    if (!defined $cmdarg{Group}) {
	die "Group name necessary!";
    }
    if (!$db->group_exists($cmdarg{Group})) { # XXX does not work yet!
	add_group();
    }
} elsif ($command eq 'add') {
    add_group();

} elsif ($command eq 'del') {
    if (!defined $cmdarg{Group}) {
	die "Group name necessary!";
    }
    $db->delete_group_definition($cmdarg{Group});

} elsif ($command eq 'update') {
    if (!defined $cmdarg{Group}) {
	die "Group name necessary!";
    }

    update_group();
}

sub add_group {
    if (!defined $cmdarg{Group}) {
	die "Group name necessary!";
    }
    if ((my $err = $db->add_group_definition($cmdarg{Group})) != 1) {
	die "Error (code=$err) while adding group $cmdarg{Group}";
    }
    update_group();
}

sub update_group {
    my $group = $db->get_group_definition($cmdarg{Group});
    $group->{Description} = $cmdarg{Description}
	if defined $cmdarg{Description};
    $db->set_group_definition($cmdarg{Group}, $group);
}

sub usage {
    my($error) = @_;
    die <<EOF;
$error
Usage: $0 [-class classname] command options ...
       [-rootdir dir | -userdb file -onlineuserdb file]

Valid commands are:
  show
  add -g group [-desc description]
  add-if-not-exists -g group [-desc description]
  del -g group
  update -g group [-desc description]

Other options:
-class:     WE_Framework UserDB class e.g. WE::DB::ComplexUser
	    Default is $class
-rootdir    The root directory of the database (can be used instead of
	    specifying -userdb)
-userdb     The user database file
EOF
}
__END__