<?php
/* Copyright (C) 2026		Eduard Wisch				<data@data-it-solution.de>
 *
 * 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.
 *
 * 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, see <https://www.gnu.org/licenses/>.
 */

/**
 * \file    agendwrapper/admin/setup.php
 * \ingroup agendwrapper
 * \brief   AgendWrapper Einstellungsseite
 */

// Dolibarr-Umgebung laden
$res = 0;
if (!$res && !empty($_SERVER["CONTEXT_DOCUMENT_ROOT"])) {
	$res = @include $_SERVER["CONTEXT_DOCUMENT_ROOT"]."/main.inc.php";
}
$tmp = empty($_SERVER['SCRIPT_FILENAME']) ? '' : $_SERVER['SCRIPT_FILENAME'];
$tmp2 = realpath(__FILE__);
$i = strlen($tmp) - 1;
$j = strlen($tmp2) - 1;
while ($i > 0 && $j > 0 && isset($tmp[$i]) && isset($tmp2[$j]) && $tmp[$i] == $tmp2[$j]) {
	$i--;
	$j--;
}
if (!$res && $i > 0 && file_exists(substr($tmp, 0, ($i + 1))."/main.inc.php")) {
	$res = @include substr($tmp, 0, ($i + 1))."/main.inc.php";
}
if (!$res && $i > 0 && file_exists(dirname(substr($tmp, 0, ($i + 1)))."/main.inc.php")) {
	$res = @include dirname(substr($tmp, 0, ($i + 1)))."/main.inc.php";
}
if (!$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");
}

require_once DOL_DOCUMENT_ROOT."/core/lib/admin.lib.php";
require_once DOL_DOCUMENT_ROOT.'/core/lib/security.lib.php';
require_once '../lib/agendwrapper.lib.php';

/**
 * @var Conf $conf
 * @var DoliDB $db
 * @var HookManager $hookmanager
 * @var Translate $langs
 * @var User $user
 */

$langs->loadLangs(array("admin", "agendwrapper@agendwrapper"));

// Zugriffskontrolle
if (!$user->admin) {
	accessforbidden();
}

$action = GETPOST('action', 'aZ09');
$backtopage = GETPOST('backtopage', 'alpha');


/*
 * Aktionen
 */

if ($action == 'update' && $user->admin) {
	$db->begin();
	$error = 0;

	// Nextcloud-URL
	$val = GETPOST('AGENDWRAPPER_NEXTCLOUD_URL', 'alpha');
	$res = dolibarr_set_const($db, 'AGENDWRAPPER_NEXTCLOUD_URL', trim($val), 'chaine', 0, '', $conf->entity);
	if (!($res > 0)) {
		$error++;
	}

	// Benutzername
	$val = GETPOST('AGENDWRAPPER_NEXTCLOUD_USER', 'alpha');
	$res = dolibarr_set_const($db, 'AGENDWRAPPER_NEXTCLOUD_USER', trim($val), 'chaine', 0, '', $conf->entity);
	if (!($res > 0)) {
		$error++;
	}

	// Passwort (nur wenn ausgefuellt, verschluesselt speichern)
	$pass = GETPOST('AGENDWRAPPER_NEXTCLOUD_PASS', 'none');
	if (!empty($pass)) {
		$res = dolibarr_set_const($db, 'AGENDWRAPPER_NEXTCLOUD_PASS', dolEncrypt($pass), 'chaine', 0, '', $conf->entity);
		if (!($res > 0)) {
			$error++;
		}
	}

	// Kalender 1
	$val = GETPOST('AGENDWRAPPER_CAL1_NAME', 'alpha');
	$res = dolibarr_set_const($db, 'AGENDWRAPPER_CAL1_NAME', trim($val), 'chaine', 0, '', $conf->entity);
	if (!($res > 0)) {
		$error++;
	}

	// Kalender 2
	$val = GETPOST('AGENDWRAPPER_CAL2_NAME', 'alpha');
	$res = dolibarr_set_const($db, 'AGENDWRAPPER_CAL2_NAME', trim($val), 'chaine', 0, '', $conf->entity);
	if (!($res > 0)) {
		$error++;
	}

	// Cache-Dauer
	$val = GETPOSTINT('AGENDWRAPPER_CACHE_DURATION');
	if ($val < 30) {
		$val = 300;
	}
	$res = dolibarr_set_const($db, 'AGENDWRAPPER_CACHE_DURATION', $val, 'chaine', 0, '', $conf->entity);
	if (!($res > 0)) {
		$error++;
	}

	// API-Key
	$val = GETPOST('AGENDWRAPPER_API_KEY', 'alpha');
	if (!empty($val)) {
		$res = dolibarr_set_const($db, 'AGENDWRAPPER_API_KEY', trim($val), 'chaine', 0, '', $conf->entity);
		if (!($res > 0)) {
			$error++;
		}
	}

	if (!$error) {
		$db->commit();
		setEventMessages($langs->trans("SetupSaved"), null, 'mesgs');
	} else {
		$db->rollback();
		setEventMessages($langs->trans("Error"), null, 'errors');
	}
}

// Verbindungstest
if ($action == 'testconnection' && $user->admin) {
	dol_include_once('/agendwrapper/class/IcsProxy.class.php');
	$proxy = new IcsProxy($db);

	$testResults = array();
	for ($c = 1; $c <= 2; $c++) {
		$calName = getDolGlobalString('AGENDWRAPPER_CAL'.$c.'_NAME');
		if (empty($calName)) {
			continue;
		}

		$rawIcs = $proxy->fetchFromNextcloud($calName);
		if ($rawIcs === false) {
			setEventMessages($langs->trans('ConnectionFailed', $proxy->error), null, 'errors');
		} else {
			$eventCount = $proxy->countEvents($rawIcs);
			setEventMessages($langs->trans('ConnectionSuccess', $eventCount).' (Kalender '.$c.': '.$calName.')', null, 'mesgs');
		}
	}

	if (empty(getDolGlobalString('AGENDWRAPPER_CAL1_NAME')) && empty(getDolGlobalString('AGENDWRAPPER_CAL2_NAME'))) {
		setEventMessages($langs->trans('CalendarNotConfigured', '1+2'), null, 'warnings');
	}
}


/*
 * Ansicht
 */

$form = new Form($db);

$title = "AgendWrapperSetup";
$help_url = '';

llxHeader('', $langs->trans($title), $help_url, '', 0, 0, '', '', '', 'mod-agendwrapper page-admin');

$linkback = '<a href="'.($backtopage ? $backtopage : DOL_URL_ROOT.'/admin/modules.php?restore_lastsearch_values=1').'">'.$langs->trans("BackToModuleList").'</a>';

print load_fiche_titre($langs->trans($title), $linkback, 'title_setup');

$head = agendwrapperAdminPrepareHead();
print dol_get_fiche_head($head, 'settings', $langs->trans($title), -1, "agendwrapper@agendwrapper");

print '<span class="opacitymedium">'.$langs->trans("AgendWrapperSetupPage").'</span><br><br>';

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

// === Nextcloud-Verbindung ===
print load_fiche_titre($langs->trans("NextcloudSection"), '', 'fa-cloud');

print '<table class="noborder centpercent">';
print '<tr class="liste_titre"><td class="titlefield">'.$langs->trans("Parameter").'</td><td>'.$langs->trans("Value").'</td></tr>';

// URL
print '<tr class="oddeven"><td>';
print $form->textwithpicto($langs->trans("NextcloudUrl"), $langs->trans("NextcloudUrlHelp"));
print '</td><td>';
print '<input type="url" name="AGENDWRAPPER_NEXTCLOUD_URL" class="minwidth500" value="'.dol_escape_htmltag(getDolGlobalString('AGENDWRAPPER_NEXTCLOUD_URL')).'" placeholder="https://cloud.example.de/remote.php/dav/calendars/user/">';
print '</td></tr>';

// Benutzername
print '<tr class="oddeven"><td>';
print $langs->trans("NextcloudUser");
print '</td><td>';
print '<input type="text" name="AGENDWRAPPER_NEXTCLOUD_USER" class="minwidth300" value="'.dol_escape_htmltag(getDolGlobalString('AGENDWRAPPER_NEXTCLOUD_USER')).'">';
print '</td></tr>';

// Passwort
print '<tr class="oddeven"><td>';
print $form->textwithpicto($langs->trans("NextcloudPass"), $langs->trans("NextcloudPassHelp"));
print '</td><td>';
print '<input type="password" name="AGENDWRAPPER_NEXTCLOUD_PASS" class="minwidth300" value="" autocomplete="new-password" placeholder="';
if (getDolGlobalString('AGENDWRAPPER_NEXTCLOUD_PASS')) {
	print dol_escape_htmltag($langs->trans("NextcloudPassSet"));
} else {
	print dol_escape_htmltag($langs->trans("NextcloudPass"));
}
print '">';
print '</td></tr>';

print '</table>';
print '<br>';

// === Kalender ===
print load_fiche_titre($langs->trans("CalendarSection"), '', 'fa-calendar');

print '<table class="noborder centpercent">';
print '<tr class="liste_titre"><td class="titlefield">'.$langs->trans("Parameter").'</td><td>'.$langs->trans("Value").'</td></tr>';

// Kalender 1
print '<tr class="oddeven"><td>';
print $form->textwithpicto($langs->trans("Cal1Name"), $langs->trans("Cal1NameHelp"));
print '</td><td>';
print '<input type="text" name="AGENDWRAPPER_CAL1_NAME" class="minwidth300" value="'.dol_escape_htmltag(getDolGlobalString('AGENDWRAPPER_CAL1_NAME')).'" placeholder="firmenkalender">';
print '</td></tr>';

// Kalender 2
print '<tr class="oddeven"><td>';
print $form->textwithpicto($langs->trans("Cal2Name"), $langs->trans("Cal2NameHelp"));
print '</td><td>';
print '<input type="text" name="AGENDWRAPPER_CAL2_NAME" class="minwidth300" value="'.dol_escape_htmltag(getDolGlobalString('AGENDWRAPPER_CAL2_NAME')).'" placeholder="privatkalender">';
print '</td></tr>';

print '</table>';
print '<br>';

// === Cache ===
print load_fiche_titre($langs->trans("CacheSection"), '', 'fa-database');

print '<table class="noborder centpercent">';
print '<tr class="liste_titre"><td class="titlefield">'.$langs->trans("Parameter").'</td><td>'.$langs->trans("Value").'</td></tr>';

print '<tr class="oddeven"><td>';
print $form->textwithpicto($langs->trans("CacheDuration"), $langs->trans("CacheDurationHelp"));
print '</td><td>';
$cacheDuration = getDolGlobalString('AGENDWRAPPER_CACHE_DURATION', '300');
print '<input type="number" name="AGENDWRAPPER_CACHE_DURATION" class="width100" value="'.dol_escape_htmltag($cacheDuration).'" min="30" step="30"> '.$langs->trans("Seconds");
print '</td></tr>';

print '</table>';
print '<br>';

// === Proxy / API-Key ===
print load_fiche_titre($langs->trans("ProxySection"), '', 'fa-key');

print '<table class="noborder centpercent">';
print '<tr class="liste_titre"><td class="titlefield">'.$langs->trans("Parameter").'</td><td>'.$langs->trans("Value").'</td></tr>';

print '<tr class="oddeven"><td>';
print $form->textwithpicto($langs->trans("ApiKey"), $langs->trans("ApiKeyHelp"));
print '</td><td>';
print '<input type="text" name="AGENDWRAPPER_API_KEY" id="apikey_field" class="minwidth400" value="'.dol_escape_htmltag(getDolGlobalString('AGENDWRAPPER_API_KEY')).'">';
print ' <a class="button" href="#" onclick="document.getElementById(\'apikey_field\').value = generateApiKey(); return false;">'.$langs->trans("GenerateApiKey").'</a>';
print '</td></tr>';

print '</table>';

// Speichern-Button
print '<div class="center">';
print '<input type="submit" class="button button-save" value="'.$langs->trans("Save").'">';
print '</div>';

print '</form>';

print '<br>';

// === Verbindungstest ===
print '<div class="center">';
print '<a class="button" href="'.$_SERVER["PHP_SELF"].'?action=testconnection&token='.newToken().'">'.$langs->trans("TestConnection").'</a>';
print '</div>';

print '<br>';

// === Proxy-URLs anzeigen ===
$apiKey = getDolGlobalString('AGENDWRAPPER_API_KEY');
$cal1 = getDolGlobalString('AGENDWRAPPER_CAL1_NAME');
$cal2 = getDolGlobalString('AGENDWRAPPER_CAL2_NAME');

if (!empty($apiKey) && (!empty($cal1) || !empty($cal2))) {
	print load_fiche_titre($langs->trans("ProxyUrlSection"), '', 'fa-link');

	print '<div class="info">';
	print $langs->trans("ProxyUrlInfo").'<br><br>';

	$baseProxyUrl = DOL_MAIN_URL_ROOT.'/custom/agendwrapper/proxy.php';

	if (!empty($cal1)) {
		$proxyUrl1 = $baseProxyUrl.'?cal=1&key='.urlencode($apiKey);
		print '<strong>'.$langs->trans("ProxyUrlCal1").' ('.$cal1.'):</strong><br>';
		print '<code>'.dol_escape_htmltag($proxyUrl1).'</code><br><br>';
	}

	if (!empty($cal2)) {
		$proxyUrl2 = $baseProxyUrl.'?cal=2&key='.urlencode($apiKey);
		print '<strong>'.$langs->trans("ProxyUrlCal2").' ('.$cal2.'):</strong><br>';
		print '<code>'.dol_escape_htmltag($proxyUrl2).'</code><br>';
	}

	print '</div>';
} else {
	print '<div class="warning">'.$langs->trans("ProxyNotConfigured").'</div>';
}

print dol_get_fiche_end();

// JavaScript fuer API-Key-Generierung
print '<script>
function generateApiKey() {
	var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
	var key = "";
	for (var i = 0; i < 32; i++) {
		key += chars.charAt(Math.floor(Math.random() * chars.length));
	}
	return key;
}
</script>';

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