// ==UserScript==
// @name         Platform Spoofer
// @namespace    https://viayoo.com/
// @version      0.6
// @description  Modify platform Only.
// @author       Via
// @match        *://*/*
// @exclude      *://rebang.today/*
// @exclude      *://*.github.com/*
// @exclude      *://scriptcat.org/*
// @exclude      *://greasyfork.org/*
// @exclude      *://github.com/*
// @exclude      *://*.google.*/*
// @exclude      *://x.com/*
// @exclude      *://twitter.com/*
// @exclude      *://*.bing.*/*
// @exclude      *://*.baidu.*/*
// @exclude      *://*.yandex.*/*
// @exclude      *://*.iqiyi.com/*
// @exclude      *://*.qq.com/*
// @exclude      *://*.v.qq.com/*
// @exclude      *://*.sohu.com/*
// @exclude      *://*.mgtv.com/*
// @exclude      *://*.ifeng.com/*
// @exclude      *://*.pptv.com/*
// @exclude      *://*.sina.com.cn/*
// @license      MIT
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function() {
    'use strict';
    const FAKE_PLATFORM = 'Mac';
    const BYPASS_PLATFORM = 'iPhone';
    const FAKE_USER_AGENT = 'Mozilla/5.0 (iPhone; CPU iPhone OS 15_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.0 Mobile/15E148 Safari/604.1';
    const log = (message) => console.log(`[Platform Spoofer] ${message}`);

    function applyPlatformSpoof() {
        if (navigator.platform === FAKE_PLATFORM) return;
        let detectionMode = false;
        const platformGetter = () => detectionMode ? BYPASS_PLATFORM : FAKE_PLATFORM;
        try {
            const descriptor = Object.getOwnPropertyDescriptor(navigator, 'platform');
            if (descriptor?.configurable) {
                Object.defineProperty(navigator, 'platform', {
                    get: platformGetter,
                    configurable: true,
                    enumerable: true
                });
            } else if (navigator.__defineGetter__) {
                navigator.__defineGetter__('platform', platformGetter);
            }
            const originalIndexOf = String.prototype.indexOf;
            const originalToString = String.prototype.toString;
            const spoofNavigator = new Proxy(navigator, {
                get: (target, prop) => {
                    if (prop === 'platform') return platformGetter();
                    if (prop === 'userAgent') return FAKE_USER_AGENT;
                    const value = Reflect.get(target, prop);
                    return typeof value === 'function' ? value.bind(target) : value;
                }
            });
            Object.defineProperty(window, 'navigator', {
                value: spoofNavigator,
                writable: false,
                configurable: true
            });
            Object.freeze(window.navigator);
            String.prototype.indexOf = function(searchString) {
                const self = String(this);
                if (self === FAKE_PLATFORM || self === BYPASS_PLATFORM) {
                    detectionMode = true;
                    if (searchString === 'Win' || searchString === 'Mac') return -1;
                    if (searchString === 'Linux' || searchString === 'X11') return -1;
                    detectionMode = false;
                }
                return originalIndexOf.call(this, searchString);
            };
            String.prototype.toString = function() {
                return this === navigator.platform ? platformGetter() : originalToString.call(this);
            };

        } catch (e) {
            console.warn('[Platform Spoofer] Spoofing error:', e);
            window.navigator = new Proxy(navigator, {
                get: (target, prop) => {
                    if (prop === 'platform') return FAKE_PLATFORM;
                    if (prop === 'userAgent') return FAKE_USER_AGENT;
                    return Reflect.get(target, prop);
                }
            });
        }
    }
    applyPlatformSpoof();
    if (document.readyState === 'loading' && navigator.platform !== FAKE_PLATFORM) {
        document.addEventListener('DOMContentLoaded', applyPlatformSpoof, {
            once: true
        });
    }
})();