// ==UserScript==
// @name         Real Profit Calculator
// @namespace    http://tampermonkey.net/
// @version      1.1
// @description  Calculates real NoRNG profit for MWI battle emulator.
// @author       guch8017
// @match        https://shykai.github.io/MWICombatSimulatorTest/dist/
// @grant        GM_registerMenuCommand
// @grant        GM_setValue
// @grant        GM_getValue
// @license      MIT
// @downloadURL none
// ==/UserScript==

(function () {
    'use strict';

    GM_registerMenuCommand("设置社区掉落增益", async function () {
        const currentRate = await GM_getValue('buffRate', 1.295);
        const input = prompt("Enter new Buff Rate:", currentRate);
        if (input !== null) {
            const parsed = parseFloat(input);
            if (!isNaN(parsed) && parsed > 0) {
                await GM_setValue('buffRate', parsed);
                alert(`Buff rate set to ${parsed}. Reload the page to see changes.`);
            } else {
                alert("Invalid input. Please enter a positive number.");
            }
        }
    });

    function waitForElement(selector, callback) {
        const observer = new MutationObserver(() => {
            const el = document.querySelector(selector);
            if (el) {
                observer.disconnect();
                callback(el);
            }
        });
        observer.observe(document.body, { childList: true, subtree: true });
    }

    function parseNumber(text) {
        const numericText = text.replace(/[^\d.,\-]/g, '').replace(/,/g, '');
        return parseFloat(numericText);
    }

    async function calculateAndInsert() {
        const expenseText = document.getElementById('script_expense')?.textContent || '';
        const noRngProfitText = document.getElementById('noRngProfitPreview')?.textContent || '';

        const expense = parseNumber(expenseText);
        const noRngProfit = parseNumber(noRngProfitText);
        const buffRate = await GM_getValue('buffRate', 1.295);

        if (!isNaN(expense) && !isNaN(noRngProfit)) {
            const realProfit = ((noRngProfit + expense) * buffRate) - expense;
            const formattedProfit = realProfit.toLocaleString(undefined, { maximumFractionDigits: 3 });

            const existingDiv = document.getElementById('realProfitDisplay');
            if (existingDiv) {
                existingDiv.textContent = `实际期望利润: ${formattedProfit}`;
                return;
            }

            const displayDiv = document.createElement('div');
            displayDiv.id = 'realProfitDisplay';
            displayDiv.style.backgroundColor = '#FFD700';
            displayDiv.style.color = 'black';
            displayDiv.style.fontWeight = 'bold';
            displayDiv.style.padding = '4px';
            displayDiv.textContent = `实际期望利润: ${formattedProfit}`;

            const targetDiv = document.getElementById('noRngProfitPreview').parentElement.parentElement;
            targetDiv.parentNode.insertBefore(displayDiv, targetDiv.nextSibling);
        }
    }

    waitForElement('#noRngProfitPreview', () => {
        calculateAndInsert();

        const config = { characterData: true, subtree: true, childList: true };

        const expenseNode = document.getElementById('script_expense');
        const profitNode = document.getElementById('noRngProfitPreview');

        const observer = new MutationObserver(calculateAndInsert);

        if (expenseNode) observer.observe(expenseNode, config);
        if (profitNode) observer.observe(profitNode, config);
    });
})();