<?php
declare(strict_types=1);

/**
 * Gemeinsames Bootstrap fuer den Telegram-Cron.
 *
 * Diese Datei laedt Konfigurationen, bindet die Hilfsbibliotheken ein,
 * erstellt die PDO-Datenbankverbindung, initialisiert Zeitzonen und stellt
 * alle benoetigten Objekte und Pfade gesammelt fuer den Cron bereit.
 */

error_reporting(E_ALL);
ini_set('display_errors', '1');
set_time_limit(0);

$rootDir = dirname(__DIR__, 2);
$stateFile = __DIR__ . DIRECTORY_SEPARATOR . 'telegram_cron_state.json';
$dbConfig = require $rootDir . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'database.php';
$telegramConfig = require $rootDir . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'telegram.php';
require_once $rootDir . DIRECTORY_SEPARATOR . 'public' . DIRECTORY_SEPARATOR . 'telegram' . DIRECTORY_SEPARATOR . 'lib' . DIRECTORY_SEPARATOR . 'message_footer.php';

$GLOBALS['filterColorConfigPath'] = $rootDir . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'filter_colors.json';

require_once __DIR__ . DIRECTORY_SEPARATOR . 'lib' . DIRECTORY_SEPARATOR . 'cron_helpers.php';
require_once __DIR__ . DIRECTORY_SEPARATOR . 'lib' . DIRECTORY_SEPARATOR . 'telegram_api.php';
require_once __DIR__ . DIRECTORY_SEPARATOR . 'lib' . DIRECTORY_SEPARATOR . 'tcrb_helpers.php';

$dsn = sprintf(
    'mysql:host=%s;port=%d;dbname=%s;charset=%s',
    $dbConfig['host'],
    (int) ($dbConfig['port'] ?? 3306),
    $dbConfig['dbname'],
    $dbConfig['charset'] ?? 'utf8mb4'
);

$pdo = new PDO(
    $dsn,
    $dbConfig['user'],
    $dbConfig['pass'],
    [
        PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
        PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
    ]
);

ensureImportRunsTableExists($pdo);

$timezoneBerlin = new DateTimeZone('Europe/Berlin');
$timezoneUtc = new DateTimeZone('UTC');
$nowBerlin = new DateTimeImmutable('now', $timezoneBerlin);
$nowUtc = $nowBerlin->setTimezone($timezoneUtc);

return [
    'rootDir' => $rootDir,
    'stateFile' => $stateFile,
    'dbConfig' => $dbConfig,
    'telegramConfig' => $telegramConfig,
    'pdo' => $pdo,
    'timezoneBerlin' => $timezoneBerlin,
    'timezoneUtc' => $timezoneUtc,
    'nowBerlin' => $nowBerlin,
    'nowUtc' => $nowUtc,
];