<?php
header('Access-Control-Allow-Origin: *');
header('Access-Control-Allow-Headers: *');
header('Content-Type: text/plain; charset=UTF-8');
date_default_timezone_set('Asia/Kolkata');

error_reporting(E_ALL);
ini_set('display_errors', 0);

function respond($status, $message, $extra = [])
{
    $lines = [];
    $lines[] = 'status: ' . ($status ? 'true' : 'false');
    $lines[] = 'message: ' . $message;

    foreach ($extra as $key => $value) {
        if (is_array($value)) {
            $lines[] = $key . ':';
            $lines[] = print_r($value, true);
        } else {
            $lines[] = $key . ': ' . (string)$value;
        }
    }

    echo implode(PHP_EOL, $lines) . PHP_EOL;
    exit;
}

function getClientIp()
{
    if (!empty($_SERVER['HTTP_CLIENT_IP'])) return $_SERVER['HTTP_CLIENT_IP'];
    if (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) return trim(explode(',', $_SERVER['HTTP_X_FORWARDED_FOR'])[0]);
    return $_SERVER['REMOTE_ADDR'] ?? '';
}

function detectPublicIp()
{
    $services = ['https://api.ipify.org', 'https://ifconfig.me/ip', 'https://icanhazip.com'];
    foreach ($services as $url) {
        $ch = curl_init();
        curl_setopt_array($ch, [
            CURLOPT_URL => $url,
            CURLOPT_RETURNTRANSFER => true,
            CURLOPT_CONNECTTIMEOUT => 5,
            CURLOPT_TIMEOUT => 8,
            CURLOPT_SSL_VERIFYPEER => true,
            CURLOPT_SSL_VERIFYHOST => 2,
        ]);
        $response = curl_exec($ch);
        $httpCode = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
        curl_close($ch);

        if ($response !== false && $httpCode >= 200 && $httpCode < 300) {
            $ip = trim($response);
            if (filter_var($ip, FILTER_VALIDATE_IP)) return $ip;
        }
    }
    return '';
}

function postJson($url, $payload)
{
    $ch = curl_init();
    curl_setopt_array($ch, [
        CURLOPT_URL => $url,
        CURLOPT_POST => true,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_CONNECTTIMEOUT => 10,
        CURLOPT_TIMEOUT => 30,
        CURLOPT_HTTPHEADER => ['Content-Type: application/json'],
        CURLOPT_POSTFIELDS => json_encode($payload, JSON_UNESCAPED_SLASHES),
        CURLOPT_SSL_VERIFYPEER => true,
        CURLOPT_SSL_VERIFYHOST => 2,
    ]);

    $raw = curl_exec($ch);
    $httpCode = (int)curl_getinfo($ch, CURLINFO_HTTP_CODE);
    $curlError = curl_error($ch);
    curl_close($ch);

    if ($raw === false || $httpCode < 200 || $httpCode >= 300) {
        return [false, null, $curlError ?: "HTTP $httpCode", $raw, $httpCode];
    }

    $decoded = json_decode($raw, true);
    if (!is_array($decoded)) {
        return [false, null, 'Invalid JSON from target API', $raw, $httpCode];
    }

    return [true, $decoded, null, $raw, $httpCode];
}

$domainKey = trim($_GET['authkey'] ?? '');
$apiKey = trim($_GET['apikey'] ?? '');

if ($domainKey === '' || $apiKey === '') respond(false, 'Missing required params: authkey, apikey');

$serverPublicIp = detectPublicIp();
if ($serverPublicIp === '' || !filter_var($serverPublicIp, FILTER_VALIDATE_IP)) respond(false, 'Unable to validate server public IP');

$targetApi = trim($_GET['target_api'] ?? '');
if ($targetApi === '') $targetApi = 'https://matkaapi.com/apis/market_api.php';

$domain = trim((string)preg_replace('/:\\d+$/', '', (string)($_SERVER['HTTP_HOST'] ?? '')));
if ($domain === '') respond(false, 'Unable to detect domain from request URL.');

$payload = [
    'api_key' => $apiKey,
    'domain' => $domain,
    'domain_key' => $domainKey,
    'starline' => 'all',
];

if (isset($_GET['date']) && $_GET['date'] !== '') $payload['date'] = trim((string)$_GET['date']);
if (isset($_GET['old']) && $_GET['old'] !== '') {
    $oldVal = strtolower(trim((string)$_GET['old']));
    $payload['old'] = in_array($oldVal, ['1', 'true', 'yes'], true);
}

list($ok, $apiResponse, $apiError, $rawResponse, $httpCode) = postJson($targetApi, $payload);
if (!$ok) {
    respond(false, 'Target API call failed.', [
        'error' => $apiError,
        'http_code' => $httpCode,
        'target_api' => $targetApi,
        'raw_response' => is_string($rawResponse) ? trim($rawResponse) : '',
    ]);
}

if (isset($apiResponse['status']) && $apiResponse['status'] === false) {
    $apiMessage = isset($apiResponse['message']) && $apiResponse['message'] !== '' ? (string)$apiResponse['message'] : 'Target API returned an error.';
    respond(false, $apiMessage);
}

$dataForClientDb = (isset($apiResponse['data']) && is_array($apiResponse['data'])) ? $apiResponse['data'] : [];
$totalItems = count($dataForClientDb);

respond(true, 'Data fetched successfully.', [
    'source' => 'STARLINE',
    'items' => $totalItems,
    'note' => 'Yaha aapko STARLINE data mil raha hai. Is data ko apne DB me insert/update kar lo.',
    'data' => $dataForClientDb,
    'server_client_ip' => getClientIp(),
    'server_public_ip' => $serverPublicIp,
]);
?>