Xbox Cloud Gaming Localization

Set Xbox Cloud Gaming' game language to your browser's preferred language.

Install this script?
Author's suggested script

You may also like Xbox Cloud Gaming Region Unlocker.

Install this script
// ==UserScript==
// @name                 Xbox Cloud Gaming Localization
// @name:zh-CN           Xbox Cloud Gaming 云游戏语言本地化
// @name:zh-TW           Xbox Cloud Gaming 雲端游戲語言本地化
// @namespace            http://tampermonkey.net/
// @version              1.3
// @description          Set Xbox Cloud Gaming' game language to your browser's preferred language.
// @description:zh-CN    将 Xbox Cloud Gaming 的游戏设置为浏览器首选语言
// @description:zh-TW    將 Xbox Cloud Gaming 的遊戲設定為瀏覽器首選語言
// @author               TGSAN
// @match                https://www.xbox.com/*/play*
// @icon                 data:image/png;base64,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
// @inject-into          page
// @run-at               document-start
// @grant                unsafeWindow
// ==/UserScript==

(function() {
    'use strict';

    let windowCtx = self.window;
    if (self.unsafeWindow) {
        console.log("[Xbox Cloud Gaming Localization] use unsafeWindow mode");
        windowCtx = self.unsafeWindow;
    } else {
        console.log("[Xbox Cloud Gaming Localization] use window mode (your userscript extensions not support unsafeWindow)");
    }

    // Your code here...
    let allFullLanguages = [];
    let allShortLanguages = [];
    let browserFirstLanguage = "";

    navigator.languages.forEach(language => {
        const reg = /^[a-z]{2}-[A-Z]{2}$/;
        const isFullLanguage = reg.test(language);
        if (isFullLanguage) {
            allFullLanguages.push(language);
        } else {
            allShortLanguages.push(language);
        }
    });

    if (allFullLanguages.length > 0) {
        browserFirstLanguage = allFullLanguages[0];
    }

    const originFetch = windowCtx.fetch;
    windowCtx.fetch = (...arg) => {
        // console.log('fetch arg', ...arg);

        let arg0 = arg[0];
        let url = "";
        let isRequest = false;
        switch (typeof arg0) {
            case "object":
                url = arg0.url;
                isRequest = true;
                break;
            case "string":
                url = arg0;
                break;
            default:
                break;
        }

        if (url.indexOf('/v5/sessions/cloud/play') > -1) {
            // Start Configuration
            return new Promise(async (resolve, reject) => {
                // eg: /en-US/play/launch/forza-horizon-4-standard-edition/9PNJXVCVWD4K
                const regex = /\/([a-zA-Z0-9]+)\/?/gm;
                let matches;
                let latestMatch;
                while ((matches = regex.exec(document.location.pathname)) !== null) {
                    if (matches.index === regex.lastIndex) {
                        regex.lastIndex++;
                    }
                    matches.forEach((match, groupIndex) => {
                        // console.log(`Found match, group ${groupIndex}: ${match}`);
                        latestMatch = match;
                    });
                }
                let selectedLanguage = browserFirstLanguage;
                if (latestMatch) {
                    let pid = latestMatch;
                    try {
                        let res = await fetch(
                            "https://catalog.gamepass.com/products?market=US&language=en-US&hydration=PCInline", {
                            "headers": {
                                "content-type": "application/json;charset=UTF-8",
                            },
                            "body": "{\"Products\":[\"" + pid + "\"]}",
                            "method": "POST",
                            "mode": "cors",
                            "credentials": "omit"
                        });
                        let jsonObj = await res.json();
                        let languageSupport = jsonObj["Products"][pid]["LanguageSupport"]
                        if (languageSupport) {
                            let supportedlanguages = Object.keys(languageSupport);
                            if (supportedlanguages.length > 0) {
                                let matched = false;
                                console.log("[Xbox Cloud Gaming Localization] Browser first language: " + browserFirstLanguage);
                                for (let fullLanguage of allFullLanguages) {
                                    if (matched === false) {
                                        if (supportedlanguages.indexOf(fullLanguage) > -1) {
                                            matched = true;
                                            selectedLanguage = fullLanguage;
                                            console.log("[Xbox Cloud Gaming Localization] Game support: " + fullLanguage + " (Browser language: " + browserFirstLanguage + ")");
                                            break;
                                        } else {
                                            console.log("[Xbox Cloud Gaming Localization] Game not support: " + fullLanguage);
                                        }
                                    }
                                }
                                if (matched === false) {
                                    console.log("[Xbox Cloud Gaming Localization] Start fuzzy matching");
                                    for (let shortLanguage of allShortLanguages) {
                                        supportedlanguages.forEach(language => {
                                            if (matched === false) {
                                                if (language.startsWith(shortLanguage)) {
                                                    if (matched === false) {
                                                        matched = true;
                                                        selectedLanguage = language;
                                                        console.log("[Xbox Cloud Gaming Localization] Game support: " + fullLanguage + " (Browser language: " + browserFirstLanguage + ")");
                                                    }
                                                }
                                            }
                                        });
                                    }
                                }
                            } else {
                                console.warn("[Xbox Cloud Gaming Localization] Game no supported languages list.");
                            }
                        }
                    } catch (err) {
                        console.warn("[Xbox Cloud Gaming Localization] fallback to first browser language")
                    }
                }
                if (isRequest && arg0.method == "POST") {
                    arg0.json().then(json => {
                        if (selectedLanguage != "") {
                            console.log("Selected: " + selectedLanguage);
                            json["settings"]["locale"] = selectedLanguage;
                        } else {
                            console.log("Use default language");
                        }
                        let body = JSON.stringify(json);
                        arg[0] = new Request(url, {
                            method: arg0.method,
                            headers: arg0.headers,
                            body: body,
                            mode: arg0.mode,
                            credentials: arg0.credentials,
                            cache: arg0.cache,
                            redirect: arg0.redirect,
                            referrer: arg0.referrer,
                            integrity: arg0.integrity
                        });
                        originFetch(...arg).then(res => {
                            resolve(res);
                        }).catch(err => {
                            reject(err);
                        });
                    });
                } else {
                    console.error("[Xbox Cloud Gaming Localization] [ERROR] Not a request.");
                    return originFetch(...arg);
                }
            });
        } else if (url.indexOf('/v2/login/user') > -1) {
            // Area Select
            return new Promise((resolve, reject) => {
                originFetch(...arg).then(res => {
                    res.json().then(json => {
                        // console.error(json);
                        json["offeringSettings"]["allowRegionSelection"] = true;
                        let body = JSON.stringify(json);
                        let newRes = new Response(body, {
                            status: res.status,
                            statusText: res.statusText,
                            headers: res.headers
                        })
                        resolve(newRes);
                    }).catch(err => {
                        reject(err);
                    });
                }).catch(err => {
                    reject(err);
                });
            });
        } else {
            return originFetch(...arg);
        }

    }
})();