#!/usr/bin/perl
# --
# otrs.ArticleStorageSwitch.pl - to move stored attachments from one backend to other
# Copyright (C) 2001-2015 OTRS AG, http://otrs.com/
# --
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU AFFERO General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# 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 Affero General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
# or see http://www.gnu.org/licenses/agpl.txt.
# --

use strict;
use warnings;

use File::Basename;
use FindBin qw($RealBin);
use lib dirname($RealBin);
use lib dirname($RealBin) . '/Kernel/cpan-lib';
use lib dirname($RealBin) . '/Custom';

use Getopt::Std;
use Time::HiRes qw(usleep);

use Kernel::System::ObjectManager;

# get options
my %Opts;
getopt( 'sdcCb', \%Opts );
if ( $Opts{h} ) {
    print "otrs.ArticleStorageSwitch.pl - to move storage content\n";
    print "Copyright (C) 2001-2015 OTRS AG, http://otrs.com/\n";
    print
        "usage: otrs.ArticleStorageSwitch.pl -s ArticleStorageDB -d ArticleStorageFS [-c <JUST_SELECT_WHERE_CLOSE_DATE_IS_BEFORE> e. g. -c '2011-06-29 14:00:00' -C <JUST_SELECT_WHERE_CLOSE_IS_OLDER_IN_DAYS] e. g. -C '5' [-b sleeptime per ticket in microseconds] [-l liberal] [-f force]\n";
    exit 1;
}

if ( !$Opts{s} ) {
    print STDERR "ERROR: Need -s SOURCE, e. g. -s ArticleStorageDB param\n";
    exit 1;
}
if ( !$Opts{d} ) {
    print STDERR "ERROR: Need -d DESTINATION, e. g. -s ArticleStorageFS param\n";
    exit 1;
}
if ( $Opts{s} eq $Opts{d} ) {
    print STDERR
        "ERROR: Need different source and destination params, e. g. -s ArticleStorageDB -d ArticleStorageFS param\n";
    exit 1;
}
if ( $Opts{b} && $Opts{b} !~ m{ \A \d+ \z }xms ) {
    print STDERR "ERROR: sleeptime needs to be a numeric value! e.g. 1000\n";
    exit 1;
}

# create object manager
local $Kernel::OM = Kernel::System::ObjectManager->new(
    'Kernel::System::Log' => {
        LogPrefix => 'OTRS-otrs.ArticleStorageSwitch.pl',
    },
);

# disable cache
$Kernel::OM->Get('Kernel::System::Cache')->Configure(
    CacheInMemory  => 0,
    CacheInBackend => 1,
);

# disable ticket events
$Kernel::OM->Get('Kernel::Config')->{'Ticket::EventModulePost'} = {};

# get pid object
my $PIDObject = $Kernel::OM->Get('Kernel::System::PID');

# create pid lock
if (
    !$Opts{f}
    && !$PIDObject->PIDCreate( Name => 'ArticleStorageSwitch' )
    )
{
    print
        "NOTICE: otrs.ArticleStorageSwitch.pl is already running (use '-f' if you want to start it ";
    print "forced)!\n";
    exit 1;
}
elsif (
    $Opts{f}
    && !$PIDObject->PIDCreate( Name => 'ArticleStorageSwitch' )
    )
{
    print "NOTICE: otrs.ArticleStorageSwitch.pl is already running but is starting again!\n";
}

# liberal mode
if ( $Opts{l} ) {
    print "NOTICE: otrs.ArticleStorageSwitch.pl is running in liberal mode!\n";
}

# extended input validation
my %SearchParams;
if ( $Opts{c} ) {

    # check time stamp format
    if ( !$Kernel::OM->Get('Kernel::System::Time')->TimeStamp2SystemTime( String => $Opts{c} ) ) {
        print STDERR
            "ERROR: -c '$Opts{c}' is not a valid time stamp, please use 'yyyy-mm-dd hh:mm:ss'\n";
        exit 1;
    }
    %SearchParams = (
        StateType                => 'Closed',
        TicketCloseTimeOlderDate => $Opts{c},
    );
}
elsif ( $Opts{C} ) {

    # check time stamp format
    if ( $Opts{C} !~ m{ \A \d+ \z }xms ) {
        print STDERR
            "ERROR: -C '$Opts{C}' is not a valid integer, please use e. g. '5' for 5 days\n";
        exit 1;
    }
    $Opts{C} = $Opts{C} * 60 * 60 * 24;
    my $TimeStamp = $Kernel::OM->Get('Kernel::System::Time')->SystemTime() - $Opts{C};
    $TimeStamp = $Kernel::OM->Get('Kernel::System::Time')->SystemTime2TimeStamp(
        SystemTime => $TimeStamp,
    );
    print "NOTICE: Searching for ticket which are closed before '$TimeStamp'\n";
    %SearchParams = (
        StateType                => 'Closed',
        TicketCloseTimeOlderDate => $TimeStamp,
    );
}

# set new PID
$PIDObject->PIDCreate(
    Name  => 'ArticleStorageSwitch',
    Force => 1,
    TTL   => 60 * 60 * 24 * 3,
);

# get ticket object
my $TicketObject = $Kernel::OM->Get('Kernel::System::Ticket');

# get all tickets
my @TicketIDs = $TicketObject->TicketSearch(

    # additional search params
    %SearchParams,

    # result (required)
    Result  => 'ARRAY',
    OrderBy => 'Up',

    # result limit
    Limit      => 1_000_000_000,
    UserID     => 1,
    Permission => 'ro',
);

my $Count      = 0;
my $CountTotal = scalar @TicketIDs;

TICKETID:
for my $TicketID (@TicketIDs) {

    $Count++;

    print "NOTICE: $Count/$CountTotal (TicketID:$TicketID)\n";

    my $Success = $TicketObject->TicketArticleStorageSwitch(
        TicketID    => $TicketID,
        Source      => $Opts{s},
        Destination => $Opts{d},
        UserID      => 1,
    );

    exit 1 if !$Opts{l} && !$Success;

    next TICKETID if !$Opts{b};

    Time::HiRes::usleep( $Opts{b} );
}

# delete pid lock
$PIDObject->PIDDelete( Name => 'ArticleStorageSwitch' );

print "NOTICE: done.\n";

exit 0;
