<?php
declare(strict_types=1);

require_once __DIR__ . '/../db/config.php';

if (session_status() === PHP_SESSION_NONE) {
    session_start();
}

$lang = $_GET['lang'] ?? ($_SESSION['lang'] ?? 'en');
$lang = $lang === 'ar' ? 'ar' : 'en';
$_SESSION['lang'] = $lang;
$dir = $lang === 'ar' ? 'rtl' : 'ltr';

$translations = [
    'en' => [
        'app_name' => 'CargoLink',
        'nav_home' => 'Overview',
        'nav_shipper' => 'Shipper Desk',
        'nav_owner' => 'Truck Owner Desk',
        'nav_admin' => 'Admin Panel',
        'hero_title' => 'Move cargo faster with verified trucks.',
        'hero_subtitle' => 'Post shipments, collect offers, and pay via Thawani or bank transfer. Built for local and nearby cross-border moves.',
        'hero_tagline' => 'Multilingual Logistics Marketplace',
        'register_shipper' => 'Register as Shipper',
        'register_owner' => 'Register as Truck Owner',
        'cta_shipper' => 'Post a shipment',
        'cta_owner' => 'Find loads',
        'cta_admin' => 'Open admin',
        'stats_shipments' => 'Shipments posted',
        'stats_offers' => 'Active offers',
        'stats_confirmed' => 'Confirmed trips',
        'section_workflow' => 'How it works',
        'recent_shipments' => 'Recent shipments',
        'step_post' => 'Shipper posts cargo details and preferred payment.',
        'step_offer' => 'Truck owners respond with their best rate.',
        'step_confirm' => 'Admin confirms booking and status.',
        'shipper_dashboard' => 'Shipper Dashboard',
        'new_shipment' => 'Create shipment',
        'shipper_name' => 'Shipper name',
        'shipper_company' => 'Company',
        'origin' => 'Origin city',
        'destination' => 'Destination city',
        'cargo' => 'Cargo description',
        'weight' => 'Weight (tons)',
        'pickup_date' => 'Pickup date',
        'delivery_date' => 'Delivery date',
        'payment_method' => 'Payment method',
        'payment_thawani' => 'Thawani online payment',
        'payment_bank' => 'Bank transfer',
        'submit_shipment' => 'Submit shipment',
        'shipments_list' => 'Your latest shipments',
        'status' => 'Status',
        'offer' => 'Best offer',
        'actions' => 'Actions',
        'view' => 'View',
        'owner_dashboard' => 'Truck Owner Dashboard',
        'available_shipments' => 'Available shipments',
        'offer_price' => 'Offer price',
        'offer_owner' => 'Truck owner name',
        'submit_offer' => 'Send offer',
        'admin_dashboard' => 'Admin Dashboard',
        'update_status' => 'Update status',
        'save' => 'Save',
        'shipment_detail' => 'Shipment detail',
        'created_at' => 'Created',
        'best_offer' => 'Best offer',
        'assign_owner' => 'Assigned owner',
        'no_shipments' => 'No shipments yet. Create the first one to get started.',
        'no_offers' => 'No offers yet.',
        'success_shipment' => 'Shipment posted successfully.',
        'success_offer' => 'Offer submitted to the shipper.',
        'success_status' => 'Status updated.',
        'error_required' => 'Please fill in all required fields.',
        'error_invalid' => 'Please enter valid values.',
        'status_posted' => 'Posted',
        'status_offered' => 'Offered',
        'status_confirmed' => 'Confirmed',
        'status_in_transit' => 'In transit',
        'status_delivered' => 'Delivered',
        'footer_note' => 'This is the initial MVP slice. Payments are not yet connected.',
'marketing_title_1' => 'For Shippers',         'marketing_desc_1' => 'Find the right truck for your cargo quickly and securely. Post your load and get offers instantly.',         'marketing_title_2' => 'For Truck Owners',         'marketing_desc_2' => 'Maximize your earnings and eliminate empty miles. Browse available shipments and offer your rate.',         'motivation_phrase' => 'Empowering the logistics of tomorrow.',         'why_choose_us' => 'Why Choose CargoLink?',         'feature_1_title' => 'Fast Matching',         'feature_1_desc' => 'Connect with available trucks or shipments in minutes.',         'feature_2_title' => 'Secure Payments',         'feature_2_desc' => 'Your transactions are protected with security.',         'feature_3_title' => 'Verified Users',         'feature_3_desc' => 'We verify all truck owners to ensure peace of mind.',
    ],
    'ar' => [
        'app_name' => 'CargoLink',
        'nav_home' => 'نظرة عامة',
        'nav_shipper' => 'لوحة الشاحن',
        'nav_owner' => 'لوحة مالك الشاحنة',
        'nav_admin' => 'لوحة الإدارة',
        'hero_title' => 'انقل شحنتك بسرعة مع شاحنات موثوقة.',
        'hero_subtitle' => 'أنشئ شحنة، استلم عروضاً، وادفع عبر ثواني أو التحويل البنكي.',
        'hero_tagline' => 'منصة لوجستية متعددة اللغات',
        'register_shipper' => 'التسجيل كشاحن',
        'register_owner' => 'التسجيل كمالك شاحنة',
        'cta_shipper' => 'إنشاء شحنة',
        'cta_owner' => 'البحث عن الشحنات',
        'cta_admin' => 'الدخول للإدارة',
        'stats_shipments' => 'الشحنات المنشورة',
        'stats_offers' => 'العروض الحالية',
        'stats_confirmed' => 'الرحلات المؤكدة',
        'section_workflow' => 'طريقة العمل',
        'recent_shipments' => 'أحدث الشحنات',
        'step_post' => 'يقوم الشاحن بإدخال تفاصيل الشحنة وطريقة الدفع.',
        'step_offer' => 'يرسل أصحاب الشاحنات أفضل عروضهم.',
        'step_confirm' => 'تؤكد الإدارة الحجز وتحدث الحالة.',
        'shipper_dashboard' => 'لوحة الشاحن',
        'new_shipment' => 'إنشاء شحنة',
        'shipper_name' => 'اسم الشاحن',
        'shipper_company' => 'الشركة',
        'origin' => 'مدينة الانطلاق',
        'destination' => 'مدينة الوصول',
        'cargo' => 'وصف الحمولة',
        'weight' => 'الوزن (طن)',
        'pickup_date' => 'تاريخ الاستلام',
        'delivery_date' => 'تاريخ التسليم',
        'payment_method' => 'طريقة الدفع',
        'payment_thawani' => 'الدفع الإلكتروني عبر ثواني',
        'payment_bank' => 'تحويل بنكي',
        'submit_shipment' => 'إرسال الشحنة',
        'shipments_list' => 'أحدث الشحنات',
        'status' => 'الحالة',
        'offer' => 'أفضل عرض',
        'actions' => 'إجراءات',
        'view' => 'عرض',
        'owner_dashboard' => 'لوحة مالك الشاحنة',
        'available_shipments' => 'الشحنات المتاحة',
        'offer_price' => 'سعر العرض',
        'offer_owner' => 'اسم مالك الشاحنة',
        'submit_offer' => 'إرسال العرض',
        'admin_dashboard' => 'لوحة الإدارة',
        'update_status' => 'تحديث الحالة',
        'save' => 'حفظ',
        'shipment_detail' => 'تفاصيل الشحنة',
        'created_at' => 'تم الإنشاء',
        'best_offer' => 'أفضل عرض',
        'assign_owner' => 'المالك المعتمد',
        'no_shipments' => 'لا توجد شحنات بعد. ابدأ بإنشاء أول شحنة.',
        'no_offers' => 'لا توجد عروض بعد.',
        'success_shipment' => 'تم نشر الشحنة بنجاح.',
        'success_offer' => 'تم إرسال العرض إلى الشاحن.',
        'success_status' => 'تم تحديث الحالة.',
        'error_required' => 'يرجى تعبئة جميع الحقول المطلوبة.',
        'error_invalid' => 'يرجى إدخال قيم صحيحة.',
        'status_posted' => 'منشورة',
        'status_offered' => 'بعرض',
        'status_confirmed' => 'مؤكدة',
        'status_in_transit' => 'قيد النقل',
        'status_delivered' => 'تم التسليم',
        'footer_note' => 'هذه هي النسخة الأولية. الدفع غير متصل بعد.',
'marketing_title_1' => 'للشاحنين',         'marketing_desc_1' => 'ابحث عن الشاحنة المناسبة لحمولتك بسرعة وأمان.',         'marketing_title_2' => 'لأصحاب الشاحنات',         'marketing_desc_2' => 'عظّم أرباحك وتجنب العودة فارغاً.',         'motivation_phrase' => 'تمكين الخدمات اللوجستية للمستقبل.',         'why_choose_us' => 'لماذا تختار كارجو لينك؟',         'feature_1_title' => 'مطابقة سريعة',         'feature_1_desc' => 'تواصل مع الشاحنات المتاحة في دقائق.',         'feature_2_title' => 'مدفوعات آمنة',         'feature_2_desc' => 'معاملاتك محمية بأعلى معايير الأمان.',         'feature_3_title' => 'مستخدمون موثوقون',         'feature_3_desc' => 'نقوم بالتحقق من جميع أصحاب الشاحنات لضمان راحتك.',
    ],
];

function t(string $key): string
{
    global $translations, $lang;
    return $translations[$lang][$key] ?? $key;
}

function e($value): string
{
    return htmlspecialchars((string) $value, ENT_QUOTES, 'UTF-8');
}

function ensure_schema(): void
{
    $sql = <<<SQL
CREATE TABLE IF NOT EXISTS shipments (
    id INT AUTO_INCREMENT PRIMARY KEY,
    shipper_name VARCHAR(120) NOT NULL,
    shipper_company VARCHAR(120) NOT NULL,
    origin_city VARCHAR(120) NOT NULL,
    destination_city VARCHAR(120) NOT NULL,
    cargo_description VARCHAR(255) NOT NULL,
    weight_tons DECIMAL(10,2) NOT NULL,
    pickup_date DATE NOT NULL,
    delivery_date DATE NOT NULL,
    payment_method ENUM('thawani','bank_transfer') NOT NULL DEFAULT 'thawani',
    status ENUM('posted','offered','confirmed','in_transit','delivered') NOT NULL DEFAULT 'posted',
    offer_price DECIMAL(10,2) DEFAULT NULL,
    offer_owner VARCHAR(120) DEFAULT NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
SQL;
    db()->exec($sql);
    try { db()->exec("ALTER TABLE users ADD COLUMN status ENUM('pending','active','rejected') NOT NULL DEFAULT 'active'"); } catch (Exception $e) {} 


    db()->exec(
        "CREATE TABLE IF NOT EXISTS users (
            id INT AUTO_INCREMENT PRIMARY KEY,
            email VARCHAR(255) NOT NULL UNIQUE,
            password VARCHAR(255) NOT NULL,
            full_name VARCHAR(255) NOT NULL,
            role ENUM('admin','shipper','truck_owner') NOT NULL,
            status ENUM('pending','active','rejected') NOT NULL DEFAULT 'active',
            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4"
    );

    db()->exec(
        "CREATE TABLE IF NOT EXISTS shipper_profiles (
            id INT AUTO_INCREMENT PRIMARY KEY,
            user_id INT NOT NULL UNIQUE,
            company_name VARCHAR(255) NOT NULL,
            phone VARCHAR(40) NOT NULL,
            country_id INT NULL,
            city_id INT NULL,
            address_line VARCHAR(255) NOT NULL,
            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
            CONSTRAINT fk_shipper_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4"
    );

    db()->exec(
        "CREATE TABLE IF NOT EXISTS truck_owner_profiles (
            id INT AUTO_INCREMENT PRIMARY KEY,
            user_id INT NOT NULL UNIQUE,
            phone VARCHAR(40) NOT NULL,
            country_id INT NULL,
            city_id INT NULL,
            address_line VARCHAR(255) NOT NULL,
            truck_type VARCHAR(120) NOT NULL,
            load_capacity DECIMAL(10,2) NOT NULL,
            plate_no VARCHAR(80) NOT NULL,
            id_card_path TEXT NOT NULL,
            truck_pic_path VARCHAR(255) NOT NULL,
            registration_path TEXT NOT NULL,
            created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
            CONSTRAINT fk_owner_user FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
        ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4"
    );
}

function set_flash(string $type, string $message): void
{
    $_SESSION['flash'] = ['type' => $type, 'message' => $message];
}

function get_flash(): ?array
{
    if (!empty($_SESSION['flash'])) {
        $flash = $_SESSION['flash'];
        unset($_SESSION['flash']);
        return $flash;
    }
    return null;
}

function url_with_lang(string $path, array $params = []): string
{
    global $lang;
    $params = array_merge(['lang' => $lang], $params);
    return $path . '?' . http_build_query($params);
}

function current_url_with_lang(string $newLang): string
{
    $params = $_GET;
    $params['lang'] = $newLang;
    $path = basename($_SERVER['PHP_SELF'] ?? 'index.php');
    return $path . '?' . http_build_query($params);
}

function status_label(string $status): string
{
    $map = [
        'posted' => t('status_posted'),
        'offered' => t('status_offered'),
        'confirmed' => t('status_confirmed'),
        'in_transit' => t('status_in_transit'),
        'delivered' => t('status_delivered'),
    ];
    return $map[$status] ?? $status;
}

function get_settings(): array
{
    static $settings = null;
    if ($settings !== null) {
        return $settings;
    }
    $settings = [];
    try {
        $stmt = db()->query("SELECT setting_key, setting_value FROM settings");
        while ($row = $stmt->fetch()) {
            $settings[$row['setting_key']] = $row['setting_value'];
        }
    } catch (Throwable $e) {
    }
    return $settings;
}

function get_setting(string $key, $default = ''): string
{
    $settings = get_settings();
    return $settings[$key] ?? $default;
}