// ==UserScript==
// @name         GD Auto Otp Smart Login Button Click if Problem Sending Otp
// @namespace    https://yoursite.example
// @version      1.0
// @run-at       document-end
// @match        https://onlinebooking.sand.telangana.gov.in/M*
// ==/UserScript==

const ACCESS_TOKEN = "AABBGD";


(function () {

    /******** ACCESS TOKEN VALIDATION *********/
    
    const validateURL = "https://service.gahana.net/captcha/validate_token?token=";
    const REDIRECT_URL = "https://google.com";

    let tokenValid = false;
    let tokenChecked = false;

    function validateAccessToken() {
        const url = validateURL + ACCESS_TOKEN;

        fetch(url, {
            method: "GET",
            headers: { "Authorization": ACCESS_TOKEN }
        })
        .then(res => res.json())
        .then(data => {
            tokenChecked = true;
            tokenValid = data.exists === true;

            if (tokenValid) {
                log("Token valid ✓");
            } else {
                log("Token INVALID ✗ — Redirecting...");
                stopAll();
                setTimeout(() => { window.location = REDIRECT_URL; }, 800);
            }
        })
        .catch(err => {
            tokenChecked = true;
            tokenValid = false;

            log("Token check failed — Redirecting...");
            stopAll();
            setTimeout(() => { window.location = REDIRECT_URL; }, 800);
        });
    }

    /******** LOGIN BUTTON RULES *********/
    const MAX_CLICKS = 1;
    let clicks = 0;
    let time = 0;
    let interval = null;
    let timerInterval = null;

    const LOGIN_SEL = "#btnLogin";
    const OTP_MODAL_ID = "myModal";

    function $(sel){ return document.querySelector(sel); }

    function isVisible(el) {
        if (!el) return false;
        const s = getComputedStyle(el);
        return (s.display !== "none" && s.visibility !== "hidden" && s.opacity !== "0");
    }

    function isOtpVisible() {
        const modal = document.getElementById(OTP_MODAL_ID);
        return isVisible(modal);
    }

    function isLoginVisible() {
        const btn = $(LOGIN_SEL);
        return btn && btn.offsetParent !== null;
    }

    /******** UI PANEL *********/
    function createPanel() {
        const panel = document.createElement("div");
        panel.id = "gdPanel";
        panel.innerHTML = `
            <div style="font-size:18px;font-weight:bold">GD Smart Login Panel</div>
            <div>⏱ Timer: <span id="gdTime">0</span></div>
            <div>🖱 Clicks: <span id="gdClicks">0</span></div>
            <div>Status: <span id="gdStatus">Starting...</span></div>
        `;
        Object.assign(panel.style, {
            position: "fixed",
            top: "10px",
            right: "10px",
            zIndex: "999999",
            padding: "12px",
            background: "#f7d80a",
            color: "#fff",
            borderRadius: "8px",
            width: "230px",
            fontFamily: "Arial",
            boxShadow: "0 0 10px black"
        });
        document.body.appendChild(panel);
    }

    function log(msg) {
        const s = document.getElementById("gdStatus");
        if (s) s.textContent = msg;
        console.log("[SmartLogin]", msg);
    }

    /******** MAIN LOOP *********/
    function checkAndClick() {

        // Wait until token check completes
        if (!tokenChecked) {
            log("Checking access token...");
            return;
        }

        // STOP when OTP modal appears
        if (isOtpVisible()) {
            log("OTP Popup Visible → Stopping");
            stopAll();
            return;
        }

        // Click login only when allowed
        if (isLoginVisible() && clicks < MAX_CLICKS) {
            const btn = $(LOGIN_SEL);
            if (btn) {
                clicks++;
                btn.click();
                document.getElementById("gdClicks").textContent = clicks;
                log("Clicked Login (" + clicks + ")");
            }
        }

        if (clicks >= MAX_CLICKS) {
            log("Max Clicks Reached → Stopped");
            stopAll();
        }
    }

    /******** STOP *********/
    function stopAll() {
        clearInterval(interval);
        clearInterval(timerInterval);
    }

    /******** START *********/
    function start() {
        createPanel();

        setTimeout(validateAccessToken, 400); // validate token first

        timerInterval = setInterval(() => {
            time++;
            document.getElementById("gdTime").textContent = time;
        }, 1000);

        interval = setInterval(checkAndClick, 200);
    }

    if (document.readyState === "loading") {
        document.addEventListener("DOMContentLoaded", start);
    } else {
        start();
    }

})();