// ==UserScript==
// @name         Skip to turn numeric input
// @namespace    https://infiniteworlds.app/
// @version      1.0
// @description  Changes the "Skip to turn number" input type to number
// @match        https://infiniteworlds.app/
// @icon         https://infinite-worlds-images.us-east-1.linodeobjects.com/00000__logo_square_on_background_512.jpg
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function skipToTurnHandler(e) {
        const modal = document.getElementById("alert-modal");
        if (modal === null) {
            return;
        }
        const instructionsSelector = "//h4[starts-with(text(), 'Select a turn number')]";
        const instructions = evaluateXpathFirstNode(instructionsSelector, modal);
        if (instructions === null) {
            return;
        }
        const regex = /\d+$/;
        const turnInputSelector = "//h4[starts-with(text(), 'Select a turn number')]/ancestor::div[@class = 'modal-content']/descendant::input[@type = 'text']";
        const turnInput = evaluateXpathFirstNode(turnInputSelector, modal);
        if (turnInput !== null) {
            turnInput.type = "number";
            turnInput.min = "1";
            turnInput.max = instructions.textContent.match(regex)[0];
            turnInput.value = "1";
        }
    }
    let skipToTurnObserver = new MutationObserver(skipToTurnHandler);
    skipToTurnObserver.observe(document.body, { childList: true, subtree: true });

    function evaluateXpathFirstNode(expression, contextNode = document) {
        return document.evaluate(
            expression,
            contextNode,
            null,
            XPathResult.FIRST_ORDERED_NODE_TYPE,
            null
        ).singleNodeValue;
    }

})();