<?php
/* Copyright (C) 2026 Alles Watt lauft
 *
 * 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 3 of the License, or
 * (at your option) any later version.
 */

/**
 * \file    kundenkarte/admin/backup.php
 * \ingroup kundenkarte
 * \brief   Backup and restore page for KundenKarte data
 */

// Load Dolibarr environment
$res = 0;
if (!$res && file_exists("../../main.inc.php")) {
	$res = @include "../../main.inc.php";
}
if (!$res && file_exists("../../../main.inc.php")) {
	$res = @include "../../../main.inc.php";
}
if (!$res) {
	die("Include of main fails");
}

// Libraries
require_once DOL_DOCUMENT_ROOT."/core/lib/admin.lib.php";
require_once DOL_DOCUMENT_ROOT."/core/class/html.form.class.php";
require_once '../lib/kundenkarte.lib.php';
dol_include_once('/kundenkarte/class/anlagebackup.class.php');

// Translations
$langs->loadLangs(array("admin", "kundenkarte@kundenkarte"));

// Access control
if (!$user->admin && !$user->hasRight('kundenkarte', 'admin')) {
	accessforbidden();
}

// Parameters
$action = GETPOST('action', 'aZ09');
$confirm = GETPOST('confirm', 'alpha');

$form = new Form($db);
$backup = new AnlageBackup($db);

/*
 * Actions
 */

// Create backup
if ($action == 'create_backup') {
	$includeFiles = GETPOSTINT('include_files');

	$result = $backup->createBackup($includeFiles);
	if ($result) {
		setEventMessages($langs->trans('BackupCreatedSuccess', basename($result)), null, 'mesgs');
	} else {
		setEventMessages($langs->trans('BackupCreatedError').': '.$backup->error, null, 'errors');
	}

	header('Location: '.$_SERVER['PHP_SELF']);
	exit;
}

// Download backup
if ($action == 'download') {
	$filename = GETPOST('file', 'alpha');
	$filepath = $conf->kundenkarte->dir_output.'/backups/'.basename($filename);

	if (file_exists($filepath) && strpos($filename, 'kundenkarte_backup_') === 0) {
		header('Content-Type: application/zip');
		header('Content-Disposition: attachment; filename="'.basename($filepath).'"');
		header('Content-Length: '.filesize($filepath));
		readfile($filepath);
		exit;
	} else {
		setEventMessages($langs->trans('FileNotFound'), null, 'errors');
	}
}

// Delete backup
if ($action == 'confirm_delete' && $confirm == 'yes') {
	$filename = GETPOST('file', 'alpha');
	if ($backup->deleteBackup($filename)) {
		setEventMessages($langs->trans('BackupDeleted'), null, 'mesgs');
	} else {
		setEventMessages($langs->trans('Error'), null, 'errors');
	}

	header('Location: '.$_SERVER['PHP_SELF']);
	exit;
}

// Restore backup
if ($action == 'confirm_restore' && $confirm == 'yes') {
	$filename = GETPOST('file', 'alpha');
	$clearExisting = GETPOSTINT('clear_existing');

	$filepath = $conf->kundenkarte->dir_output.'/backups/'.basename($filename);

	if ($backup->restoreBackup($filepath, $clearExisting)) {
		setEventMessages($langs->trans('RestoreSuccess'), null, 'mesgs');
	} else {
		setEventMessages($langs->trans('RestoreError').': '.$backup->error, null, 'errors');
	}

	header('Location: '.$_SERVER['PHP_SELF']);
	exit;
}

// Upload backup
if ($action == 'upload_backup' && !empty($_FILES['backupfile']['name'])) {
	$backupDir = $conf->kundenkarte->dir_output.'/backups';
	if (!is_dir($backupDir)) {
		dol_mkdir($backupDir);
	}

	$filename = $_FILES['backupfile']['name'];

	// Validate filename format
	if (!preg_match('/^kundenkarte_backup_\d{4}-\d{2}-\d{2}_\d{2}-\d{2}-\d{2}\.zip$/', $filename)) {
		setEventMessages($langs->trans('InvalidBackupFile'), null, 'errors');
	} elseif ($_FILES['backupfile']['error'] !== UPLOAD_ERR_OK) {
		setEventMessages($langs->trans('ErrorUploadFailed'), null, 'errors');
	} else {
		$targetPath = $backupDir.'/'.$filename;
		if (move_uploaded_file($_FILES['backupfile']['tmp_name'], $targetPath)) {
			setEventMessages($langs->trans('BackupUploaded'), null, 'mesgs');
		} else {
			setEventMessages($langs->trans('ErrorUploadFailed'), null, 'errors');
		}
	}

	header('Location: '.$_SERVER['PHP_SELF']);
	exit;
}

/*
 * View
 */

$title = $langs->trans("BackupRestore");
llxHeader('', $title);

// Subheader
$linkback = '<a href="'.DOL_URL_ROOT.'/admin/modules.php?restore_lastsearch_values=1">'.$langs->trans("BackToModuleList").'</a>';
print load_fiche_titre($title, $linkback, 'title_setup');

// Configuration header
$head = kundenkarteAdminPrepareHead();
print dol_get_fiche_head($head, 'backup', $langs->trans('ModuleKundenKarteName'), -1, "fa-address-card");

// Confirmation dialogs
if ($action == 'delete') {
	$filename = GETPOST('file', 'alpha');
	print $form->formconfirm(
		$_SERVER['PHP_SELF'].'?file='.urlencode($filename),
		$langs->trans('DeleteBackup'),
		$langs->trans('ConfirmDeleteBackup', $filename),
		'confirm_delete',
		'',
		'yes',
		1
	);
}

if ($action == 'restore') {
	$filename = GETPOST('file', 'alpha');

	$formquestion = array(
		array(
			'type' => 'checkbox',
			'name' => 'clear_existing',
			'label' => $langs->trans('ClearExistingData'),
			'value' => 0
		)
	);

	print $form->formconfirm(
		$_SERVER['PHP_SELF'].'?file='.urlencode($filename),
		$langs->trans('RestoreBackup'),
		$langs->trans('ConfirmRestoreBackup', $filename),
		'confirm_restore',
		$formquestion,
		'yes',
		1
	);
}

// Statistics
$stats = $backup->getStatistics();

print '<div class="fichecenter">';

// Stats cards
print '<div style="display:flex;gap:20px;flex-wrap:wrap;margin-bottom:30px;">';

print '<div class="info-box" style="min-width:200px;">';
print '<span class="info-box-icon bg-primary"><i class="fa fa-sitemap"></i></span>';
print '<div class="info-box-content">';
print '<span class="info-box-text">'.$langs->trans('TotalElements').'</span>';
print '<span class="info-box-number">'.$stats['total_anlagen'].'</span>';
print '</div>';
print '</div>';

print '<div class="info-box" style="min-width:200px;">';
print '<span class="info-box-icon bg-success"><i class="fa fa-file"></i></span>';
print '<div class="info-box-content">';
print '<span class="info-box-text">'.$langs->trans('TotalFiles').'</span>';
print '<span class="info-box-number">'.$stats['total_files'].'</span>';
print '</div>';
print '</div>';

print '<div class="info-box" style="min-width:200px;">';
print '<span class="info-box-icon bg-warning"><i class="fa fa-plug"></i></span>';
print '<div class="info-box-content">';
print '<span class="info-box-text">'.$langs->trans('TotalConnections').'</span>';
print '<span class="info-box-number">'.$stats['total_connections'].'</span>';
print '</div>';
print '</div>';

print '<div class="info-box" style="min-width:200px;">';
print '<span class="info-box-icon bg-info"><i class="fa fa-building"></i></span>';
print '<div class="info-box-content">';
print '<span class="info-box-text">'.$langs->trans('CustomersWithAnlagen').'</span>';
print '<span class="info-box-number">'.$stats['total_customers'].'</span>';
print '</div>';
print '</div>';

print '<div class="info-box" style="min-width:200px;">';
print '<span class="info-box-icon bg-secondary"><i class="fa fa-hdd-o"></i></span>';
print '<div class="info-box-content">';
print '<span class="info-box-text">'.$langs->trans('FilesStorageSize').'</span>';
print '<span class="info-box-number">'.dol_print_size($stats['files_size']).'</span>';
print '</div>';
print '</div>';

print '</div>';

// Create Backup Section
print '<div class="titre inline-block">'.$langs->trans("CreateBackup").'</div>';
print '<br><br>';

print '<form method="POST" action="'.$_SERVER['PHP_SELF'].'">';
print '<input type="hidden" name="token" value="'.newToken().'">';
print '<input type="hidden" name="action" value="create_backup">';

print '<table class="noborder centpercent">';
print '<tr class="liste_titre">';
print '<td colspan="2">'.$langs->trans("BackupOptions").'</td>';
print '</tr>';

print '<tr class="oddeven">';
print '<td style="width:300px;">'.$langs->trans("IncludeUploadedFiles").'</td>';
print '<td>';
print '<input type="checkbox" name="include_files" value="1" checked> ';
print '<span class="opacitymedium">'.$langs->trans("IncludeFilesHelp").'</span>';
print '</td>';
print '</tr>';

print '</table>';

print '<br>';
print '<div class="center">';
print '<button type="submit" class="button button-primary">';
print '<i class="fa fa-download"></i> '.$langs->trans("CreateBackupNow");
print '</button>';
print '</div>';

print '</form>';

// Upload Backup Section
print '<br><br>';
print '<div class="titre inline-block">'.$langs->trans("UploadBackup").'</div>';
print '<br><br>';

print '<form method="POST" action="'.$_SERVER['PHP_SELF'].'" enctype="multipart/form-data">';
print '<input type="hidden" name="token" value="'.newToken().'">';
print '<input type="hidden" name="action" value="upload_backup">';

print '<table class="noborder centpercent">';
print '<tr class="liste_titre">';
print '<td colspan="2">'.$langs->trans("UploadBackupFile").'</td>';
print '</tr>';

print '<tr class="oddeven">';
print '<td style="width:300px;">'.$langs->trans("SelectBackupFile").'</td>';
print '<td>';
print '<input type="file" name="backupfile" accept=".zip" class="flat">';
print ' <button type="submit" class="button buttongen smallpaddingimp">'.$langs->trans("Upload").'</button>';
print '</td>';
print '</tr>';

print '</table>';

print '</form>';

// Existing Backups Section
print '<br><br>';
print '<div class="titre inline-block">'.$langs->trans("ExistingBackups").'</div>';
print '<br><br>';

$backups = $backup->getBackupList();

print '<table class="noborder centpercent">';
print '<tr class="liste_titre">';
print '<td>'.$langs->trans("Filename").'</td>';
print '<td>'.$langs->trans("Date").'</td>';
print '<td class="right">'.$langs->trans("Size").'</td>';
print '<td class="center">'.$langs->trans("Actions").'</td>';
print '</tr>';

if (empty($backups)) {
	print '<tr class="oddeven">';
	print '<td colspan="4" class="opacitymedium center">'.$langs->trans("NoBackupsFound").'</td>';
	print '</tr>';
} else {
	foreach ($backups as $bk) {
		print '<tr class="oddeven">';
		print '<td><i class="fa fa-file-archive-o"></i> '.dol_escape_htmltag($bk['filename']).'</td>';
		print '<td>'.dol_print_date(strtotime($bk['date']), 'dayhour').'</td>';
		print '<td class="right">'.dol_print_size($bk['size']).'</td>';
		print '<td class="center nowraponall">';

		// Download button
		print '<a href="'.$_SERVER['PHP_SELF'].'?action=download&file='.urlencode($bk['filename']).'&token='.newToken().'" class="button buttongen smallpaddingimp" title="'.$langs->trans('Download').'">';
		print '<i class="fa fa-download"></i>';
		print '</a> ';

		// Restore button
		print '<a href="'.$_SERVER['PHP_SELF'].'?action=restore&file='.urlencode($bk['filename']).'&token='.newToken().'" class="button buttongen smallpaddingimp" title="'.$langs->trans('Restore').'">';
		print '<i class="fa fa-undo"></i>';
		print '</a> ';

		// Delete button
		print '<a href="'.$_SERVER['PHP_SELF'].'?action=delete&file='.urlencode($bk['filename']).'&token='.newToken().'" class="button buttongen smallpaddingimp" title="'.$langs->trans('Delete').'">';
		print '<i class="fa fa-trash"></i>';
		print '</a>';

		print '</td>';
		print '</tr>';
	}
}

print '</table>';

// Info section
print '<br>';
print '<div class="info">';
print '<strong><i class="fa fa-info-circle"></i> '.$langs->trans("BackupInfo").':</strong><br>';
print '&bull; '.$langs->trans("BackupInfoContent").'<br>';
print '&bull; '.$langs->trans("BackupInfoFiles").'<br>';
print '&bull; '.$langs->trans("BackupInfoRestore").'<br>';
print '</div>';

print '</div>';

print dol_get_fiche_end();

llxFooter();
$db->close();