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# --
# Copyright (C) 2001-2021 OTRS AG, https://otrs.com/
# --
# This software comes with ABSOLUTELY NO WARRANTY. For details, see
# the enclosed file COPYING for license information (GPL). If you
# did not receive this file, see https://www.gnu.org/licenses/gpl-3.0.txt.
# --
#
# Generates auto increment ticket numbers like ss.... (e. g. 1010138, 1010139, ...)
# --
package Kernel::System::Ticket::Number::AutoIncrement;
use strict;
use warnings;
use parent qw(Kernel::System::Ticket::NumberBase);
our @ObjectDependencies = (
'Kernel::Config',
'Kernel::System::DB',
'Kernel::System::Ticket',
);
sub IsDateBased {
return 0;
}
sub TicketNumberBuild {
my ( $Self, $Offset ) = @_;
$Offset ||= 0;
my $BaseCounter = 1;
if ( $Self->TicketNumberCounterIsEmpty() ) {
$BaseCounter = $Self->InitialCounterOffsetCalculate();
}
my $Counter = $Self->TicketNumberCounterAdd(
Offset => $BaseCounter + $Offset,
);
return if !$Counter;
my $ConfigObject = $Kernel::OM->Get('Kernel::Config');
my $SystemID = $ConfigObject->Get('SystemID');
my $MinSize = $ConfigObject->Get('Ticket::NumberGenerator::AutoIncrement::MinCounterSize')
|| $ConfigObject->Get('Ticket::NumberGenerator::MinCounterSize')
|| 5;
# Pad ticket number with leading '0' to length $MinSize (config option).
$Counter = sprintf "%.*u", $MinSize, $Counter;
my $TicketNumber = $SystemID . $Counter;
return $TicketNumber;
}
sub GetTNByString {
my ( $Self, $String ) = @_;
if ( !$String ) {
return;
}
my $ConfigObject = $Kernel::OM->Get('Kernel::Config');
my $CheckSystemID = $ConfigObject->Get('Ticket::NumberGenerator::CheckSystemID');
my $SystemID = '';
if ($CheckSystemID) {
$SystemID = $ConfigObject->Get('SystemID');
}
my $TicketHook = $ConfigObject->Get('Ticket::Hook');
my $TicketHookDivider = $ConfigObject->Get('Ticket::HookDivider');
my $MinSize = $ConfigObject->Get('Ticket::NumberGenerator::AutoIncrement::MinCounterSize')
|| $ConfigObject->Get('Ticket::NumberGenerator::MinCounterSize')
|| 5;
my $MaxSize = $MinSize + 5;
# Check ticket number.
if ( $String =~ /\Q$TicketHook$TicketHookDivider\E($SystemID\d{$MinSize,$MaxSize})/i ) {
return $1;
}
if ( $String =~ /\Q$TicketHook\E:\s{0,2}($SystemID\d{$MinSize,$MaxSize})/i ) {
return $1;
}
return;
}
#
# Calculate initial counter value on (migrated) systems that already have tickets,
# but no counter entries yet.
#
sub InitialCounterOffsetCalculate {
my ( $Self, %Param ) = @_;
my $LastTicketNumber = $Self->_GetLastTicketNumber();
return 1 if !$LastTicketNumber;
# If the ticket number was created by a date based generator, ticket counter needs to start from 1
return 1 if $Self->_LooksLikeDateBasedTicketNumber($LastTicketNumber);
my $ConfigObject = $Kernel::OM->Get('Kernel::Config');
my $CheckSystemID = $ConfigObject->Get('Ticket::NumberGenerator::CheckSystemID');
my $SystemID = '';
if ($CheckSystemID) {
$SystemID = $ConfigObject->Get('SystemID');
}
# Remove SystemID and leading zeros
$LastTicketNumber =~ s{\A $SystemID 0* }{}msx;
return 1 if !$LastTicketNumber;
return $LastTicketNumber + 1;
}
sub _GetLastTicketNumber {
my ( $Self, %Param ) = @_;
my $DBObject = $Kernel::OM->Get('Kernel::System::DB');
return if !$DBObject->Prepare(
SQL => 'SELECT MAX(id) FROM ticket',
);
my $TicketID;
while ( my @Data = $DBObject->FetchrowArray() ) {
$TicketID = $Data[0];
}
return if $TicketID && $TicketID == 1;
my %Ticket = $Kernel::OM->Get('Kernel::System::Ticket')->TicketGet(
TicketID => $TicketID,
DynamicFields => 0,
UserID => 1,
Silent => 1,
);
return if !%Ticket;
return if !$Ticket{TicketNumber};
return $Ticket{TicketNumber};
}
sub _LooksLikeDateBasedTicketNumber {
my ( $Self, $TicketNumber ) = @_;
return if !$TicketNumber;
my $PossibleDate = substr $TicketNumber, 0, 8;
return if length $PossibleDate != 8;
# Format possible date as a date string
$PossibleDate =~ s{\A (\d{4}) (\d{2}) (\d{2}) \z}{$1-$2-$3 00:00:00}gsmx;
my $DateTimeObject = $Kernel::OM->Create('Kernel::System::DateTime');
my $Result = $DateTimeObject->Set( String => $PossibleDate );
return if !$Result;
return 1;
}
1;
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