#!/usr/bin/perl -w

# Movable Type (r) Open Source (C) 2001-2010 Six Apart, Ltd.
# This program is distributed under the terms of the
# GNU General Public License, version 2.
#
# $Id$

package MT::Tool::Upgrade;
use strict;

use lib  qw( extlib lib );
use base qw( MT::Tool );

use Carp qw(confess);
use MT::Upgrade;

sub usage { '[--dryrun] [--sql] [--name <name>]' }

sub help {
    return q{
        Installs or upgrades a database to the current MT schema.

        --dryrun         Determine the upgrade steps required without
                         executing any changes.
        --sql            Report the SQL that would be performed instead
                         of executing it.
        --name <name>    The author as whom to perform the upgrade steps.
                         Required when performing an upgrade (not at
                         initial install).
    };
}

my ($dryrun, $name, $sqlonly);

sub options {
    return (
        'dryrun!' => \$dryrun,
        'sql!'    => \$sqlonly,
        'name=s'  => \$name,
    );
}


sub main {
    my $class = shift;
    my ($verbose) = $class->SUPER::main(@_);

    if ($sqlonly) {
        $dryrun = 1;
        MT->add_callback('MT::Upgrade::SQL', 1, undef, \&sql_cb);
    }
    else {
        print "upgrade -- A command line tool for upgrading the schema for Movable Type.\n";
        print "(Non-destructive mode)\n" if $dryrun;
    }

    my $install;
    my $driver = MT::Object->driver;
    if (!$driver || !$driver->table_exists('MT::Author')) {
        $install = 1;
    }

    unless ($install || $name) {
        print "Please set username to set superuser at upgrading.  cf: upgrade --name Melody\n";
        exit;
    }

    my $author_id;
    if (!$install && $name) {
        require MT::BasicAuthor;
        my $a = MT::BasicAuthor->load({name => $name})
            or die "Not found user $name:" . MT::BasicAuthor->errstr;
        $author_id = $a->id;
    }

    if ( $install ) {
        $MT::Upgrade::Installing = 1;
    }
    my $updated = MT::Upgrade->do_upgrade(
        App       => __PACKAGE__, 
        DryRun    => $dryrun,
        Install   => $install,
        SuperUser => $author_id,
        CLI       => 1,
        User      => { user_nickname => 'Melody Nelson' },
    );

    if ($install) {
        print "Installation complete.\n";
    } else {
        print "Upgrade complete!\n" if !$dryrun && $updated;
        print "Your schema is up to date already.\n" if defined $updated && !$updated;
    }
}

sub progress {
    my $pkg = shift;
    my $msg = shift;
    print "\t* " . $msg . "\n" unless $sqlonly;
}

sub error {
    my $pkg = shift;
    my $err = shift;
    confess $err;
}

sub sql_cb {
    my $cb = shift;
    my ($upgrade, $stmt) = @_;
    print "$stmt\n";
}


__PACKAGE__->main() unless caller;

1;

