<?php

header("Content-Type: application/json");

// ================= CONFIG =================
$apiUrl  = "http://203.24.50.140:43400/send-message";
$apiKey  = "inf0rm4t1k4-2026-W4-G4T3W4Y";
$sender  = "6285171655161"; // nomor sender terdaftar
// ==========================================

// Ambil input (bisa dari POST atau JSON body)
$receiver = isset($_POST['receiver']) ? $_POST['receiver'] : null;
$message  = isset($_POST['message']) ? $_POST['message'] : null;

// Validasi nomor
if (
    empty($receiver) ||
    strlen($receiver) < 10 ||
    strlen($receiver) > 13
) {
    echo json_encode([
        "success" => false,
        "message" => "Invalid phone number"
    ]);
    exit;
}

// Konversi 08xxxx → 628xxxx
if ($receiver[0] == '0') {
    $receiver = '62' . substr($receiver, 1);
}

// Data yang dikirim ke WA Gateway
$postData = http_build_query([
    "sender"  => $sender,
    "number"  => $receiver,
    "message" => $message
]);

// Setup HTTP Context
$options = [
    "http" => [
        "method"  => "POST",
        "header"  => 
            "Content-Type: application/x-www-form-urlencoded\r\n" .
            "x-api-key: {$apiKey}\r\n",
        "content" => $postData,
        "timeout" => 30
    ]
];

$context = stream_context_create($options);

// Eksekusi request
$result = @file_get_contents($apiUrl, false, $context);

if ($result === FALSE) {
    echo json_encode([
        "success" => false,
        "message" => "Gagal menghubungi server WA Gateway"
    ]);
    exit;
}

$response = json_decode($result, true);

// Normalisasi response seperti Helper Laravel
if (isset($response['status']) && $response['status'] == true) {
    echo json_encode([
        "success" => true,
        "message" => "Pesan Berhasil Dikirim"
    ]);
} else {
    echo json_encode([
        "success" => false,
        "message" => "Nomor Tidak Dikenali"
    ]);
}