// ==UserScript==
// @name               Crack Forclass 4
// @namespace          https://www.forclass.tk/script?4
// @version            3.1.3
// @description        这同样适用于 Forclass,Sunclass,271BAY,Zhizhiniao
// @author             Houtarchat
// @match              *://*.forclass.net/Account/SignIn*
// @contributionURL    https://www.houtarchat.ml/donate.html
// @contributionAmount 5 RMB
// @license            GNU General Public License
// @grant              GM.xmlHttpRequest
// @grant              GM_getValue
// @grant              GM_setValue
// @connect            zhizhiniao.com
// @run-at             document-end
// @noframes
// @downloadURL none
// ==/UserScript==
(function () {
    "use strict";

    /* jslint browser: true */
    /* global window */
    /* global GM */

    if (sessionStorage.account) return;
    let account = GM_getValue('account'), password = GM_getValue('password');
    if (!account || !window.confirm(`登录至"${account}"？`)) {
        account = window.prompt("Your username here:");
        password = window.prompt("Your password here:");
        if (window.confirm(`将"${account}"替换当前存储的账户？`)) {
            GM_setValue('account', account);
            GM_setValue('password', password);
        }
    }

    GM.xmlHttpRequest({
        method: "POST",
        url: `${location.protocol}//www.zhizhiniao.com/ANAService.asmx/LoginAccountJson`,
        data: JSON.stringify({
            session: null,
            page: 0,
            account,
            password
        }),
        headers: {
            "Content-Type": "application/json; charset=utf-8"
        },
        onload: function ({responseText}, response = JSON.parse(responseText)) {
            let ifr = document.createElement("iframe");
            let session;

            if (response["ReturnText"]) {
                window.alert(response["ReturnText"]);
                location.reload();
            }

            session = response.result?.[0].session
            ifr.setAttribute(
                "src",
                `${location.protocol}//account.sun.forclass.net/Account/SignIn?session=${session ?? ""}`
            );
            document.head.appendChild(ifr);

            ifr.onload = () => window.location.href = `${location.protocol}//zzn.sun.forclass.net/Student/WdzySun`;
        }
    });
})();