<?php
header('Content-Type: application/json');

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    $wa_number = filter_var($_POST['wa_number'] ?? '', FILTER_SANITIZE_STRING);
    $message = filter_var($_POST['message'] ?? '', FILTER_SANITIZE_STRING);

    if (empty($wa_number) || empty($message)) {
        echo json_encode(['status' => 'error', 'message' => 'Data nomor WA atau pesan tidak boleh kosong.']);
        exit;
    }

    // Email tujuan
    $to = 'nasrungeneral@gmail.com'; 
    $subject = 'Pesan Baru dari Biolink (Permintaan Kontak WA)';
    
    $body = "Ada pengunjung yang meninggalkan pesan di Biolink Anda untuk dihubungi via WA.\n\n";
    $body .= "Nomor WA Pengunjung: $wa_number\n";
    $body .= "Pesan:\n$message\n\n";
    $body .= "Silakan hubungi pengunjung tersebut melalui WA di link berikut:\n";
    $body .= "https://wa.me/" . preg_replace('/[^0-9]/', '', $wa_number) . "\n";

    $host = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : 'localhost';
    $headers = "From: no-reply@" . $host . "\r\n";
    $headers .= "Reply-To: no-reply@" . $host . "\r\n";
    $headers .= "X-Mailer: PHP/" . phpversion();

    // Mengirim email
    // Di server lokal Laragon, hasil sendmail bisa dicek di folder: laragon\bin\sendmail\output
    $mail_sent = @mail($to, $subject, $body, $headers);

    if ($mail_sent) {
        echo json_encode(['status' => 'success']);
    } else {
        echo json_encode(['status' => 'error', 'message' => 'Gagal mengirim email ke sistem. Pastikan mail server aktif.']);
    }
} else {
    echo json_encode(['status' => 'error', 'message' => 'Metode request tidak diizinkan.']);
}