<?php
include "./conversions.php";

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

$binary = $decimal = $hexadecimal = 0;

$response = array("binary" => &$binary, "decimal" => &$decimal, "hexadecimal" => &$hexadecimal);

if (isset($_GET['binary']) && !isset($_GET['decimal']) && !isset($_GET['hexadecimal'])) {
    $binary = sanitize_int_input($_GET['binary']);
    $decimal = binary_to_decimal($binary);
    $hexadecimal = binary_to_hex($binary);
}

if (!isset($_GET['binary']) && isset($_GET['decimal']) && !isset($_GET['hexadecimal'])) {
    $decimal = sanitize_int_input($_GET['decimal']);
    $binary = decimal_to_binary($decimal);
    $hexadecimal = decimal_to_hex($decimal);
}

if (!isset($_GET['binary']) && !isset($_GET['decimal']) && isset($_GET['hexadecimal'])) {
    $hexadecimal = sanitize_string_input($_GET['hexadecimal']);
    $binary = hex_to_binary($hexadecimal);
    $decimal = hex_to_decimal($hexadecimal);
}

if ((!isset($_GET['binary']) && !isset($_GET['decimal']) && !isset($_GET['hexadecimal']) ||
    (isset($_GET['binary']) && isset($_GET['decimal']) && isset($_GET['hexadecimal'])))) {
    http_response_code(422);
    exit();
}

echo json_encode($response);