#!/usr/bin/perl

use Lemonldap::NG::Common::Conf;
use Lemonldap::NG::Common::Conf::Constants;
use Lemonldap::NG::Manager::Conf::Parser;
use Data::Dumper;
use English qw(-no_match_vars);
use File::Temp;
use POSIX qw(setuid setgid);
use Safe;
use strict;

eval {
    setgid( ( getgrnam('__APACHEGROUP__') )[2] );
    setuid( ( getpwnam('__APACHEUSER__') )[2] );
    print STDERR "Running as uid $EUID and gid $EGID\n";
};

my $conf = Lemonldap::NG::Common::Conf->new();

unless ($conf) {
    print STDERR $Lemonldap::NG::Common::Conf::msg;
    exit 1;
}

my $refConf = $conf->getConf( { raw => 1, noCache => 1 } );
delete $refConf->{reVHosts};
delete $refConf->{cipher};
delete $refConf->{cfgAuthor};
delete $refConf->{cfgAuthorIP};
delete $refConf->{cfgDate};
$refConf->{cfgLog} = '';

# Sort keys
$Data::Dumper::Sortkeys = 1;
$Data::Dumper::Useperl  = 1;
my $tmp = Dumper($refConf);

my $refFile  = File::Temp->new( UNLINK => 1 );
my $editFile = File::Temp->new( UNLINK => 1 );
print $refFile $tmp;
print $editFile $tmp;
close $refFile;
close $editFile;

my $editor = $ENV{EDITOR} || 'editor';

system "$editor $editFile";

if (`diff $refFile $editFile`) {
    my $VAR1;
    my $buf;

    # Check if the new configuration hash is valid
    open F1, $editFile->filename();
    while (<F1>) {
        $buf .= $_;
    }
    eval $buf;
    die $EVAL_ERROR if $EVAL_ERROR;

    # Update author and date
    $VAR1->{cfgAuthor} = $ENV{SUDO_USER} || $ENV{LOGNAME} || "lmConfigEditor";
    $VAR1->{cfgAuthorIP} = $ENV{SSH_CONNECTION} || "localhost";
    $VAR1->{cfgDate} = time();
    $VAR1->{cfgLog} ||= 'Edited by lmConfigEditor';

    # Test new configuration
    my $parser = Lemonldap::NG::Manager::Conf::Parser->new(
        {
            refConf => $refConf,
            newConf => $VAR1,
            req     => 1,
        }
    );
    unless ( $parser->testNewConf ) {
        print STDERR "Configuration seems to have some errors:\n ";
        print STDERR Dumper(
            { errors => $parser->errors, warnings => $parser->warnings } );
        print STDERR "Are you sure you want to write it ? (yes/no) ";
        my $resp = <STDIN>;
        die "Aborted" unless $resp =~ /^yes$/i;
    }
    undef $parser;

    # Store new configuration
    my $res = $conf->saveConf($VAR1);
    if ( $res > 0 ) {
        print STDERR "Configuration $res saved\n";
    }
    else {
        print STDERR "Configuration was not saved:\n  ";
        if ( $res == CONFIG_WAS_CHANGED ) {
            print STDERR "Configuration has changed\n";
        }
        elsif ( $res == DATABASE_LOCKED ) {
            print STDERR "Configuration database is or can nor be locked\n";
        }
        elsif ( $res == UPLOAD_DENIED ) {
            print STDERR "You're not authorized to save this configuration\n";
        }
        elsif ( $res == SYNTAX_ERROR ) {
            print STDERR "Syntax error in your configuration\n";
        }
        elsif ( $res == UNKNOWN_ERROR ) {
            print STDERR "Unknown error\n";
        }
    }
}
else {
    print STDERR "Configuration not changed\n";
}

