<?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.
 */

/**
 * \file    importzugferd/admin/setup.php
 * \ingroup importzugferd
 * \brief   ImportZugferd setup page.
 */

// Load Dolibarr environment
$res = 0;
if (!$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");
}

// Libraries
require_once DOL_DOCUMENT_ROOT."/core/lib/admin.lib.php";
require_once '../lib/importzugferd.lib.php';

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

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

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

// Form setup using FormSetup class
if (!class_exists('FormSetup')) {
    require_once DOL_DOCUMENT_ROOT.'/core/class/html.formsetup.class.php';
}
$formSetup = new FormSetup($db);

/*
 * Setup configuration items
 */

// IMAP Settings Section
$formSetup->newItem('IMAPSettings')->setAsTitle();

$item = $formSetup->newItem('IMPORTZUGFERD_IMAP_HOST');
$item->defaultFieldValue = '';
$item->cssClass = 'minwidth300';
$item->fieldAttr['placeholder'] = 'imap.example.com';

$item = $formSetup->newItem('IMPORTZUGFERD_IMAP_PORT');
$item->defaultFieldValue = '993';
$item->cssClass = 'width100';

$item = $formSetup->newItem('IMPORTZUGFERD_IMAP_USER');
$item->defaultFieldValue = '';
$item->cssClass = 'minwidth300';
$item->fieldAttr['placeholder'] = 'invoices@example.com';

$item = $formSetup->newItem('IMPORTZUGFERD_IMAP_PASSWORD');
$item->cssClass = 'minwidth300';
$item->fieldAttr['type'] = 'password';

$item = $formSetup->newItem('IMPORTZUGFERD_IMAP_FOLDER');
$item->defaultFieldValue = 'INBOX';
$item->cssClass = 'minwidth200';

$formSetup->newItem('IMPORTZUGFERD_IMAP_SSL')->setAsYesNo();

// Import Settings Section
$formSetup->newItem('ImportSettings')->setAsTitle();

$formSetup->newItem('IMPORTZUGFERD_AUTO_CREATE_INVOICE')->setAsYesNo();

// Folder Import Settings Section
$formSetup->newItem('FolderImportSettings')->setAsTitle();

$item = $formSetup->newItem('IMPORTZUGFERD_WATCH_FOLDER');
$item->defaultFieldValue = '';
$item->cssClass = 'minwidth400';
$item->fieldAttr['placeholder'] = '/path/to/invoices';

$item = $formSetup->newItem('IMPORTZUGFERD_ARCHIVE_FOLDER');
$item->defaultFieldValue = '';
$item->cssClass = 'minwidth400';
$item->fieldAttr['placeholder'] = '/path/to/archive';

$item = $formSetup->newItem('IMPORTZUGFERD_IMAP_ARCHIVE_FOLDER');
$item->defaultFieldValue = 'Archive';
$item->cssClass = 'minwidth200';

/*
 * Actions
 */

if (versioncompare(explode('.', DOL_VERSION), array(15)) < 0 && $action == 'update' && !empty($user->admin)) {
    $formSetup->saveConfFromPost();
}

include DOL_DOCUMENT_ROOT.'/core/actions_setmoduleoptions.inc.php';

/*
 * View
 */

$form = new Form($db);

$title = "ImportZugferdSetup";
llxHeader('', $langs->trans($title), '', '', 0, 0, '', '', '', 'mod-importzugferd page-admin');

// Subheader
$linkback = '<a href="'.($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');

// Configuration header
$head = importzugferdAdminPrepareHead();
print dol_get_fiche_head($head, 'settings', $langs->trans($title), -1, "importzugferd@importzugferd");

// Setup page description
print '<span class="opacitymedium">'.$langs->trans("ImportZugferdSetupPage").'</span><br><br>';

// Display the form
print $formSetup->generateOutput(true);

// Test IMAP connection button and folder selection
if (getDolGlobalString('IMPORTZUGFERD_IMAP_HOST')) {
    print '<br>';
    print '<div class="div-table-responsive-no-min">';
    print '<table class="noborder centpercent">';
    print '<tr class="liste_titre">';
    print '<td colspan="3">'.$langs->trans('TestConnection').'</td>';
    print '</tr>';

    // Check if IMAP extension is available
    $imap_available = function_exists('imap_open');

    // Test connection action
    $imap_folders = array();
    $connection_ok = false;

    if (!$imap_available) {
        print '<tr class="oddeven">';
        print '<td colspan="3">';
        print '<span class="error"><i class="fas fa-exclamation-triangle paddingright"></i>';
        print $langs->trans('IMAPExtensionNotInstalled');
        print '</span><br>';
        print '<span class="opacitymedium">'.$langs->trans('IMAPExtensionHelp').'</span>';
        print '</td>';
        print '</tr>';
    } elseif ($action == 'test_imap' || $action == 'select_folder') {
        $host = getDolGlobalString('IMPORTZUGFERD_IMAP_HOST');
        $port = getDolGlobalString('IMPORTZUGFERD_IMAP_PORT', '993');
        $imap_user = getDolGlobalString('IMPORTZUGFERD_IMAP_USER');
        $password = getDolGlobalString('IMPORTZUGFERD_IMAP_PASSWORD');
        $ssl = getDolGlobalString('IMPORTZUGFERD_IMAP_SSL');

        $mailbox_base = '{' . $host . ':' . $port . '/imap' . ($ssl ? '/ssl' : '') . '/novalidate-cert}';
        $mailbox = $mailbox_base . 'INBOX';

        $connection = @imap_open($mailbox, $imap_user, $password);

        if ($connection) {
            $connection_ok = true;
            setEventMessages($langs->trans('ConnectionSuccessful'), null, 'mesgs');

            // Get list of folders
            $folders_raw = imap_list($connection, $mailbox_base, '*');
            if ($folders_raw) {
                foreach ($folders_raw as $folder) {
                    // Remove the mailbox base from folder name
                    $folder_name = str_replace($mailbox_base, '', $folder);
                    // Decode folder name (IMAP uses modified UTF-7)
                    $folder_name_decoded = imap_utf7_decode($folder_name);
                    $imap_folders[$folder_name] = $folder_name_decoded;
                }
            }

            imap_close($connection);
        } else {
            setEventMessages($langs->trans('ConnectionFailed') . ': ' . imap_last_error(), null, 'errors');
        }
    }

    // Save selected folder
    if ($action == 'select_folder' && GETPOST('imap_folder', 'alpha')) {
        $selected_folder = GETPOST('imap_folder', 'alpha');
        dolibarr_set_const($db, 'IMPORTZUGFERD_IMAP_FOLDER', $selected_folder, 'chaine', 0, '', $conf->entity);
        setEventMessages($langs->trans('FolderSelected').': '.$selected_folder, null, 'mesgs');
    }

    // Only show status and folder selection if IMAP is available
    if ($imap_available) {
        print '<tr class="oddeven">';
        print '<td class="titlefield">'.$langs->trans('Status').'</td>';
        print '<td colspan="2">';
        if ($action == 'test_imap' || $action == 'select_folder') {
            if ($connection_ok) {
                print '<span class="ok"><i class="fas fa-check paddingright"></i>'.$langs->trans('ConnectionSuccessful').'</span>';
            } else {
                print '<span class="error"><i class="fas fa-times paddingright"></i>'.$langs->trans('ConnectionFailed').'</span>';
            }
        } else {
            print '<span class="opacitymedium">'.$langs->trans('ClickTestToCheck').'</span>';
        }
        print '</td>';
        print '</tr>';
    }

    // Show folder selection if connection was successful
    if ($imap_available && $connection_ok && !empty($imap_folders)) {
        print '<tr class="oddeven">';
        print '<td>'.$langs->trans('SelectFolder').'</td>';
        print '<td>';
        print '<form method="POST" action="'.$_SERVER['PHP_SELF'].'" class="inline-block">';
        print '<input type="hidden" name="token" value="'.newToken().'">';
        print '<input type="hidden" name="action" value="select_folder">';

        $current_folder = getDolGlobalString('IMPORTZUGFERD_IMAP_FOLDER', 'INBOX');
        print '<select name="imap_folder" class="flat minwidth200">';
        foreach ($imap_folders as $folder_raw => $folder_decoded) {
            $selected = ($folder_raw == $current_folder) ? ' selected' : '';
            print '<option value="'.dol_escape_htmltag($folder_raw).'"'.$selected.'>';
            print dol_escape_htmltag($folder_decoded);
            print '</option>';
        }
        print '</select>';
        print ' <input type="submit" class="button" value="'.$langs->trans('Save').'">';
        print '</form>';
        print '</td>';
        print '<td>';
        print '<span class="opacitymedium">'.$langs->trans('FoundFolders').': '.count($imap_folders).'</span>';
        print '</td>';
        print '</tr>';
    }

    // Only show test button if IMAP extension is available
    if ($imap_available) {
        print '<tr class="oddeven">';
        print '<td colspan="3" class="center">';
        print '<a class="button" href="'.$_SERVER['PHP_SELF'].'?action=test_imap&token='.newToken().'">';
        print '<i class="fas fa-plug paddingright"></i>'.$langs->trans('TestConnection');
        print '</a>';
        print '</td>';
        print '</tr>';
    }

    print '</table>';
    print '</div>';
}

print '<br>';

// Page end
print dol_get_fiche_end();

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