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#=====================================================================
# Lx-Office ERP
# Copyright (c) 2004
#
# Author: Philip Reetz
# Email: p.reetz@linet-services.de
# Web: http://www.lx-office.org
#
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) 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 General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#======================================================================
#
# Datev export module
#
#======================================================================

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use POSIX qw(strftime getcwd);
use Archive::Zip qw(:ERROR_CODES :CONSTANTS);

use SL::Common;
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use SL::DATEV qw(:CONSTANTS);
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use strict;

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1;

# end of main

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require "bin/mozilla/common.pl";

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sub continue { call_sub($main::form->{"nextsub"}); }
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sub export {
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$::lxdebug->enter_sub;
$::auth->assert('datev_export');
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my $stamm = SL::DATEV->new->get_datev_stamm;

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$::form->header;
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print $::form->parse_html_template('datev/export', $stamm);
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$::lxdebug->leave_sub;
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}

sub export2 {
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$::lxdebug->enter_sub;
$::auth->assert('datev_export');
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if ($::form->{exporttype} == 0) {
export_bewegungsdaten();
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} else {
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export_stammdaten();
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}
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$::lxdebug->leave_sub;
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}

sub export_bewegungsdaten {
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$::lxdebug->enter_sub;
$::auth->assert('datev_export');
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$::form->header;
print $::form->parse_html_template('datev/export_bewegungsdaten');
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$::lxdebug->leave_sub;
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}

sub export_stammdaten {
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$::lxdebug->enter_sub;
$::auth->assert('datev_export');
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$::form->header;
print $::form->parse_html_template('datev/export_stammdaten');
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$::lxdebug->leave_sub;
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}

sub export3 {
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$::lxdebug->enter_sub;
$::auth->assert('datev_export');
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my %data = (
exporttype => $::form->{exporttype} ? DATEV_ET_STAMM : DATEV_ET_BUCHUNGEN,
format => $::form->{kne} ? DATEV_FORMAT_KNE : DATEV_FORMAT_OBE,
);

if ($::form->{exporttype} == DATEV_ET_STAMM) {
$data{accnofrom} = $::form->{accnofrom},
$data{accnoto} = $::form->{accnoto},
} elsif ($::form->{exporttype} == DATEV_ET_BUCHUNGEN) {
@data{qw(from to)} = _get_dates(
$::form->{zeitraum}, $::form->{monat}, $::form->{quartal},
$::form->{transdatefrom}, $::form->{transdateto},
);
} else {
die 'invalid exporttype';
}
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my $datev = SL::DATEV->new(%data);
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$datev->clean_temporary_directories;
$datev->save_datev_stamm($::form);
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$datev->export;
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if (!$datev->errors) {
$::form->header;
print $::form->parse_html_template('datev/export3', { datev => $datev });
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} else {
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$::form->error("Export schlug fehl.\n" . join "\n", $datev->errors);
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}
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$::lxdebug->leave_sub;
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}

sub download {
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$main::lxdebug->enter_sub();

my $form = $main::form;
my $locale = $main::locale;
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$::auth->assert('datev_export');
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my $tmp_name = Common->tmpname();
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my $zip_name = strftime("kivitendo-datev-export-%Y%m%d.zip", localtime(time()));
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my $cwd = getcwd();

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my $datev = SL::DATEV->new(download_token => $form->{download_token});

my $path = $datev->export_path;
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if (!$path) {
$form->error($locale->text("Your download does not exist anymore. Please re-run the DATEV export assistant."));
}

chdir($path) || die("chdir $path");

my @filenames = glob "*";

if (!@filenames) {
chdir($cwd);
$form->error($locale->text("Your download does not exist anymore. Please re-run the DATEV export assistant."));
}
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my $zip = Archive::Zip->new();
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map { $zip->addFile($_); } @filenames;
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$zip->writeToFileNamed($tmp_name);
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chdir($cwd);

open(IN, $tmp_name) || die("open $tmp_name");
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$::locale->with_raw_io(\*STDOUT, sub {
print("Content-Type: application/zip\n");
print("Content-Disposition: attachment; filename=\"${zip_name}\"\n\n");
while (<IN>) {
print($_);
}
});
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close(IN);

unlink($tmp_name);

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$main::lxdebug->leave_sub();
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}
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sub _get_dates {
$::lxdebug->enter_sub;

my ($mode, $month, $quarter, $transdatefrom, $transdateto) = @_;
my ($fromdate, $todate);

if ($mode eq "monat") {
$fromdate = DateTime->new(day => 1, month => $month, year => DateTime->today->year);
$todate = $fromdate->clone->add(months => 1)->add(days => -1);
} elsif ($mode eq "quartal") {
die 'quarter out of of bounds' if $quarter < 1 || $quarter > 4;
$fromdate = DateTime->new(day => 1, month => (3 * $quarter - 2), year => DateTime->today->year);
$todate = $fromdate->clone->add(months => 3)->add(days => -1);
} elsif ($mode eq "zeit") {
$fromdate = DateTime->from_lxoffice($transdatefrom);
$todate = DateTime->from_lxoffice($transdateto);
die 'need from and to time' unless $fromdate && $todate;
} else {
die 'undefined interval mode';
}

$::lxdebug->leave_sub;

return ($fromdate, $todate);
}