<?php
declare (strict_types = 1);

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

$form_index_status  = null;
$form_index_message = '';
$form_index_errors  = [];
$form_index_old     = [
    'name'         => '',
    'category'     => '',
    'situation'    => '',
    'contact_type' => 'email',
    'email'        => '',
    'wa'           => '',
];

if (! function_exists('t')) {
    function t(array $translations, string $key, string $fallback = ''): string
    {
        $val = $translations[$key] ?? '';
        return $val !== '' ? (string) $val : $fallback;
    }
}

/*
|--------------------------------------------------------------------------
| Flash message après redirection
|--------------------------------------------------------------------------
*/
if (isset($_SESSION['form_index_flash']) && is_array($_SESSION['form_index_flash'])) {
    $flash = $_SESSION['form_index_flash'];

    $form_index_status  = $flash['status'] ?? null;
    $form_index_message = $flash['message'] ?? '';
    $form_index_errors  = $flash['errors'] ?? [];
    $form_index_old     = $flash['old'] ?? $form_index_old;

    unset($_SESSION['form_index_flash']);
}

/*
|--------------------------------------------------------------------------
| Si ce n'est pas le bon POST, on ne fait rien
|--------------------------------------------------------------------------
*/
if ($_SERVER['REQUEST_METHOD'] !== 'POST' || ! isset($_POST['form_index'])) {
    return;
}

/*
|--------------------------------------------------------------------------
| Charger le mail helper
|--------------------------------------------------------------------------
| Adapte le chemin si ton fichier s'appelle autrement
|--------------------------------------------------------------------------
*/
require_once __DIR__ . '/includes/mailer.php';

/*
|--------------------------------------------------------------------------
| Récupération des données
|--------------------------------------------------------------------------
*/
$form_index_old = [
    'name'         => trim((string) ($_POST['name'] ?? '')),
    'category'     => trim((string) ($_POST['category'] ?? '')),
    'situation'    => trim((string) ($_POST['situation'] ?? '')),
    'contact_type' => ($_POST['contact_type'] ?? 'email') === 'wa' ? 'wa' : 'email',
    'email'        => trim((string) ($_POST['email'] ?? '')),
    'wa'           => trim((string) ($_POST['wa'] ?? '')),
];

/*
|--------------------------------------------------------------------------
| Honeypot anti-spam
|--------------------------------------------------------------------------
*/
$honeypot = trim((string) ($_POST['company'] ?? ''));
if ($honeypot !== '') {
    $_SESSION['form_index_flash'] = [
        'status'  => 'success',
        'message' => t(
            $translations,
            'form_index_success_text',
            'Мы изучим вашу ситуацию и свяжемся с вами в ближайшее время, чтобы предложить подходящего специалиста.'
        ),
        'old'     => [
            'name'         => '',
            'category'     => '',
            'situation'    => '',
            'contact_type' => 'email',
            'email'        => '',
            'wa'           => '',
        ],
        'errors'  => [],
    ];

    header('Location: ' . strtok($_SERVER['REQUEST_URI'], '?') . '#concierge-form');
    exit;
}

/*
|--------------------------------------------------------------------------
| Validation
|--------------------------------------------------------------------------
*/
if ($form_index_old['name'] === '') {
    $form_index_errors['name'] = true;
}

$allowedCategories = [
    'lawyer',
    'notary',
    'real_estate',
    'psychologist',
    'dentist_ortho',
    'financial_advisor',
    'translator',
    'residence_consultant',
    'repair',
    'funeral',
    'other',
];

if ($form_index_old['category'] === '' || ! in_array($form_index_old['category'], $allowedCategories, true)) {
    $form_index_errors['category'] = true;
}

if ($form_index_old['situation'] === '') {
    $form_index_errors['situation'] = true;
}

if ($form_index_old['contact_type'] === 'email') {
    if ($form_index_old['email'] === '' || ! filter_var($form_index_old['email'], FILTER_VALIDATE_EMAIL)) {
        $form_index_errors['email'] = true;
    }
} else {
    if ($form_index_old['wa'] === '') {
        $form_index_errors['wa'] = true;
    }
}

if (! empty($form_index_errors)) {
    $_SESSION['form_index_flash'] = [
        'status'  => 'error',
        'message' => t(
            $translations,
            'form_index_error_required',
            'Пожалуйста, заполните все обязательные поля.'
        ),
        'old'     => $form_index_old,
        'errors'  => $form_index_errors,
    ];

    header('Location: ' . strtok($_SERVER['REQUEST_URI'], '?') . '#concierge-form');
    exit;
}

/*
|--------------------------------------------------------------------------
| Labels catégories traduites
|--------------------------------------------------------------------------
*/
$categoryLabels = [
    'lawyer'               => t($translations, 'form_index_category_lawyer', 'Адвокат'),
    'notary'               => t($translations, 'form_index_category_notary', 'Нотариус'),
    'real_estate'          => t($translations, 'form_index_category_real_estate', 'Риелтор'),
    'psychologist'         => t($translations, 'form_index_category_psychologist', 'Психолог'),
    'dentist_ortho'        => t($translations, 'form_index_category_dentist_ortho', 'Стоматолог / Ортодонт'),
    'financial_advisor'    => t($translations, 'form_index_category_financial_advisor', 'Финансовый консультант'),
    'translator'           => t($translations, 'form_index_category_translator', 'Переводчик / Присяжный переводчик'),
    'residence_consultant' => t($translations, 'form_index_category_residence_consultant', 'Консультант по ВНЖ'),
    'repair'               => t($translations, 'form_index_category_repair', 'Мастер по ремонту'),
    'funeral'              => t($translations, 'form_index_category_funeral', 'Похоронное бюро'),
    'other'                => t($translations, 'form_index_category_other', 'Другое'),
];

$contactValue = $form_index_old['contact_type'] === 'email'
    ? $form_index_old['email']
    : $form_index_old['wa'];

$contactTypeLabel = $form_index_old['contact_type'] === 'email' ? 'Email' : 'WhatsApp';

$langCurrent = (string) ($lang ?? 'ru');

$subject = '[' . strtoupper($langCurrent) . '] Nouvelle demande index — ' . ($categoryLabels[$form_index_old['category']] ?? $form_index_old['category']);

$html = '
<h2>Nouvelle demande depuis le formulaire index</h2>
<p><strong>Langue :</strong> ' . htmlspecialchars($langCurrent, ENT_QUOTES, 'UTF-8') . '</p>
<p><strong>Nom :</strong> ' . nl2br(htmlspecialchars($form_index_old['name'], ENT_QUOTES, 'UTF-8')) . '</p>
<p><strong>Catégorie :</strong> ' . nl2br(htmlspecialchars($categoryLabels[$form_index_old['category']] ?? $form_index_old['category'], ENT_QUOTES, 'UTF-8')) . '</p>
<p><strong>Situation :</strong><br>' . nl2br(htmlspecialchars($form_index_old['situation'], ENT_QUOTES, 'UTF-8')) . '</p>
<p><strong>Type de contact :</strong> ' . htmlspecialchars($contactTypeLabel, ENT_QUOTES, 'UTF-8') . '</p>
<p><strong>Contact :</strong> ' . nl2br(htmlspecialchars($contactValue, ENT_QUOTES, 'UTF-8')) . '</p>
';

$text =
    "Nouvelle demande depuis le formulaire index\n\n" .
    "Langue : " . $langCurrent . "\n" .
    "Nom : " . $form_index_old['name'] . "\n" .
    "Catégorie : " . ($categoryLabels[$form_index_old['category']] ?? $form_index_old['category']) . "\n" .
    "Situation : " . $form_index_old['situation'] . "\n" .
    "Type de contact : " . $contactTypeLabel . "\n" .
    "Contact : " . $contactValue . "\n";

/*
|--------------------------------------------------------------------------
| Reply-To seulement si email
|--------------------------------------------------------------------------
*/
$mailOptions = [];
if ($form_index_old['contact_type'] === 'email' && $form_index_old['email'] !== '') {
    $mailOptions['reply_to'] = [$form_index_old['email'], $form_index_old['name']];
}

[$ok, $err] = uslugi_mail(
    'contact@uslugi.fr',
    $subject,
    $html,
    $text,
    $mailOptions
);

if ($ok) {
    $_SESSION['form_index_flash'] = [
        'status'  => 'success',
        'message' => t(
            $translations,
            'form_index_success_text',
            'Мы изучим вашу ситуацию и свяжемся с вами в ближайшее время, чтобы предложить подходящего специалиста.'
        ),
        'old'     => [
            'name'         => '',
            'category'     => '',
            'situation'    => '',
            'contact_type' => 'email',
            'email'        => '',
            'wa'           => '',
        ],
        'errors'  => [],
    ];

    header('Location: ' . strtok($_SERVER['REQUEST_URI'], '?') . '#concierge-form');
    exit;
}

error_log('Form index send error: ' . (string) $err);

$_SESSION['form_index_flash'] = [
    'status'  => 'error',
    'message' => t(
        $translations,
        'form_index_error_send',
        'Произошла ошибка при отправке. Пожалуйста, попробуйте ещё раз.'
    ),
    'old'     => $form_index_old,
    'errors'  => [],
];

header('Location: ' . strtok($_SERVER['REQUEST_URI'], '?') . '#concierge-form');
exit;