<?php

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
// Show all errors except deprecation notices (these come from vendor libraries
// that aren't yet typed for newer PHP versions). Long-term fix: update
// dependencies to versions compatible with your PHP runtime.
error_reporting(E_ALL & ~E_DEPRECATED & ~E_USER_DEPRECATED);


if (!isset($baseDir)) {
	$baseDir = $_SERVER['DOCUMENT_ROOT'];
}

require_once $baseDir . '/../scripts/session_functions.php';

ini_wkvs_session();

check_user_permission('wk_leitung');

verify_csrf();

// Validate input
if (!isset($_POST['abt']) || !ctype_digit($_POST['abt'])) {
    http_response_code(406);
    exit;
}

$abtInput = (int) $_POST['abt'];

$type = 'wkl';

$dbconnection = require $baseDir . '/../scripts/db/db-verbindung-script.php';

if ($dbconnection['success'] !== true){
    echo 'Critical DB Error.';
    exit;
}

require $baseDir . '/../scripts/db/db-functions.php';
require $baseDir . '/../scripts/db/db-tables.php';

// Fetch existing Abteilungen ordered by name
$abts = db_select($mysqli, $tableAbt, '*', '', [], 'name ASC');

$deleteId = null;
$deleteIndex = null;

foreach ($abts as $ind => $abt) {
    if ((int)$abt['name'] === (int)$abtInput) {
        $deleteId = (int)$abt['id'];
        $deleteIndex = $ind;
        break;
    }
}

if ($deleteId === null) {
    http_response_code(406);
    exit;
}

// Delete selected row
db_delete($mysqli, $tableAbt, ['id' => $deleteId]);

// Reindex subsequent rows
for ($i = $deleteIndex + 1; $i < count($abts); $i++) {
    db_update(
        $mysqli,
        $tableAbt,
        ['name' => (int)$abts[$i]['name'] - 1],
        ['id'   => (int)$abts[$i]['id']]
    );
}

http_response_code(201);