<?php

declare(strict_types=1);

require __DIR__ . '/dev-db.php';
require_once __DIR__ . '/../app/tenant-logo.php';

$pdo = dev_pdo();
$dryRun = in_array('--dry-run', $argv, true);
$stmt = $pdo->query(
    "SELECT t.id, t.slug, ts.brand_logo, ts.pdf_watermark_logo,
            tb.plan_code, tb.subscription_status
     FROM tenants t
     LEFT JOIN tenant_settings ts ON ts.tenant_id = t.id
     LEFT JOIN tenant_billing tb ON tb.tenant_id = t.id
     WHERE t.contract_ends_at IS NOT NULL
       AND t.contract_ends_at < DATE_SUB(NOW(), INTERVAL 30 DAY)
       AND t.slug <> 'default'
     ORDER BY t.id"
);
$tenants = $stmt->fetchAll();
$deleted = 0;
$skipped = 0;

foreach ($tenants as $tenant) {
    if ((string)($tenant['plan_code'] ?? 'free') !== 'free'
        && (string)($tenant['subscription_status'] ?? '') !== 'canceled'
    ) {
        $skipped++;
        echo "SKIP {$tenant['slug']}: kostenpflichtiges Abo ist noch nicht beendet.\n";
        continue;
    }
    if ($dryRun) {
        echo "WOULD_DELETE {$tenant['slug']}\n";
        continue;
    }

    $memberStmt = $pdo->prepare('SELECT user_id FROM tenant_memberships WHERE tenant_id = ?');
    $memberStmt->execute([(int)$tenant['id']]);
    $userIds = array_map('intval', $memberStmt->fetchAll(PDO::FETCH_COLUMN));
    try {
        $pdo->beginTransaction();
        $pdo->prepare('DELETE FROM tenants WHERE id = ?')->execute([(int)$tenant['id']]);
        foreach ($userIds as $userId) {
            $membershipStmt = $pdo->prepare('SELECT COUNT(*) FROM tenant_memberships WHERE user_id = ?');
            $membershipStmt->execute([$userId]);
            $adminStmt = $pdo->prepare('SELECT COUNT(*) FROM platform_admins WHERE user_id = ?');
            $adminStmt->execute([$userId]);
            if ((int)$membershipStmt->fetchColumn() === 0 && (int)$adminStmt->fetchColumn() === 0) {
                $pdo->prepare('DELETE FROM users WHERE id = ?')->execute([$userId]);
            }
        }
        $pdo->commit();
    } catch (Throwable $e) {
        if ($pdo->inTransaction()) {
            $pdo->rollBack();
        }
        $skipped++;
        echo "ERROR {$tenant['slug']}: {$e->getMessage()}\n";
        continue;
    }

    tenant_logo_delete((string)($tenant['brand_logo'] ?? ''));
    tenant_logo_delete((string)($tenant['pdf_watermark_logo'] ?? ''));
    $deleted++;
    echo "DELETED {$tenant['slug']}\n";
}

echo "Fertig: {$deleted} gelöscht, {$skipped} übersprungen.\n";
exit($skipped > 0 ? 1 : 0);