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<?php
$settings = array(
    'store-domain' => 'YOUR SHOPIFY DOMAIN HERE',
    'api-key' => 'YOUR API KEY HERE',
    'api-secret' => 'YOUR API SECRET HERE',
    'webhook-url' => 'YOUR WEBHOOK URL HERE, INCLUDING "KEY" PARAMETER IF APPLICABLE',
);

ini_set('display_errors', 'On');
error_reporting(-1);

if (count($argv) !== 2) {
    usage();
    exit;
}

$orderId = filter_var($argv[1], FILTER_VALIDATE_INT);

if (!$orderId) {
    usage();
    exit;
}

$orderUrl = "https://{$settings['api-key']}:{$settings['api-secret']}@{$settings['store-domain']}/admin/orders/$orderId.json";
$orderJson = file_get_contents($orderUrl);

if ($orderJson === FALSE) {
    echo "Failed to retrieve JSON of order $orderId.\n";
} else {
    echo "JSON follows:\n$orderJson\n\n";

    $response = json_decode($orderJson);
    $innerJson = json_encode($response->order);

    $response = post($innerJson, $settings['webhook-url']);

    echo "HTTP response body follows.\n$response";
}


function usage()
{
    global $argv;
    echo "Usage: {$argv[0]} <Shopify order ID>\n";
}

/**
 * Lifted from http://wezfurlong.org/blog/2006/nov/http-post-from-php-without-curl/
 */
function post($body, $url)
{
    global $settings;

    $options = array('http' => array(
        'method' => 'POST',
        'content' => $body,
        'header' => "X-Shopify-Shop-Domain: {$settings['store-domain']}",
        )
    );

    $ctx = stream_context_create($options);

    $fp = fopen($url, 'rb', FALSE, $ctx);

    if (!$fp) {
        throw new Exception("Could not open $url with fopen()");
    }

    $response = stream_get_contents($fp);

    if ($response === FALSE) {
        throw new Exception("Could not read data from $url: $php_errormsg");
    }

    return $response;
}
?>