#! /usr/bin/env runjs

function generateLoginUrl() {
    var exp = (new Date().getTime() + 1000*10) + '';
    var digest_hex = __.digests.sha256().digest(__.bytes.from(exp).bytes()).asHex();
    var result = $$.shell().commands('card-cli', 'piv-ecsign', '-s', 'r1', '-x', digest_hex, '--json').start();
    var out = result[0].string();
    var outJson = JSON.parse(out);
    var signatureBase64 = outJson.signed_data_base64;
    return 'https://hatter.ink/login/direct_sign_login.jssp?__auth_before=' + exp + '&__auth_keys=&__auth_sign=' + encodeURIComponent(signatureBase64);
}

function main() {
    var url = generateLoginUrl();
    println('Open URL: ' + url);
    $$.shell().commands('open', url).start();
}

main();