From 3f6c823599853d6ee8488977113a8de3ae39bffc Mon Sep 17 00:00:00 2001
From: ririxi <dev@ririxi.dev>
Date: Thu, 19 Dec 2024 18:10:51 +0100
Subject: [PATCH] feat: add ability to change cors proxy server

---
 CustomApps/lyrics-plus/Settings.js | 29 +++++++++++++++++++++++++++++
 jsHelper/spicetifyWrapper.js       | 16 ++++++++++++----
 2 files changed, 41 insertions(+), 4 deletions(-)

diff --git a/CustomApps/lyrics-plus/Settings.js b/CustomApps/lyrics-plus/Settings.js
index 4d4df0d18c..80109ec889 100644
--- a/CustomApps/lyrics-plus/Settings.js
+++ b/CustomApps/lyrics-plus/Settings.js
@@ -452,6 +452,22 @@ const ServiceList = ({ itemsList, onListChange = () => {}, onToggle = () => {},
 	});
 };
 
+const corsProxyTemplate = () => {
+	const [proxyValue, setProxyValue] = react.useState(localStorage.getItem("spicetify:corsProxyTemplate") || "https://cors-proxy.spicetify.app/{url}");
+
+	return react.createElement("input", {
+		placeholder: "CORS Proxy Template",
+		value: proxyValue,
+		onChange: (event) => {
+			const value = event.target.value;
+			setProxyValue(value);
+
+			if (value === "" || !value) return localStorage.removeItem("spicetify:corsProxyTemplate");
+			localStorage.setItem("spicetify:corsProxyTemplate", value);
+		},
+	});
+};
+
 const OptionList = ({ type, items, onChange }) => {
 	const [itemList, setItemList] = useState(items);
 	const [, forceUpdate] = useState();
@@ -646,6 +662,19 @@ function openConfig() {
 				CONFIG.providers[name].token = value;
 				localStorage.setItem(`${APP_NAME}:provider:${name}:token`, value);
 			},
+		}),
+		react.createElement("h2", null, "CORS Proxy Template"),
+		react.createElement("span", {
+			dangerouslySetInnerHTML: {
+				__html:
+					"Use this to bypass CORS restrictions. Replace the URL with your cors proxy server of your choice. <code>{url}</code> will be replaced with the request URL.",
+			},
+		}),
+		react.createElement(corsProxyTemplate),
+		react.createElement("span", {
+			dangerouslySetInnerHTML: {
+				__html: "Spotify will reload its webview after applying. Leave empty to restore default: <code>https://cors-proxy.spicetify.app/{url}</code>",
+			},
 		})
 	);
 
diff --git a/jsHelper/spicetifyWrapper.js b/jsHelper/spicetifyWrapper.js
index 386e64ddd2..ee39422aac 100644
--- a/jsHelper/spicetifyWrapper.js
+++ b/jsHelper/spicetifyWrapper.js
@@ -352,7 +352,6 @@ window.Spicetify = {
 
 	const _cosmos = Spicetify.Player.origin?._cosmos ?? Spicetify.Platform?.Registry.resolve(Symbol.for("Cosmos"));
 
-	const corsProxyURL = "https://cors-proxy.spicetify.app";
 	const allowedMethodsMap = {
 		get: "get",
 		post: "post",
@@ -374,6 +373,7 @@ window.Spicetify = {
 			return async function (url, body) {
 				const urlObj = new URL(url);
 
+				const corsProxyURLTemplate = window.localStorage.getItem("spicetify:corsProxyTemplate") ?? "https://cors-proxy.spicetify.app/{url}";
 				const isWebAPI = urlObj.hostname === "api.spotify.com";
 				const isSpClientAPI = urlObj.hostname.includes("spotify.com") && urlObj.hostname.includes("spclient");
 				const isInternalURL = internalEndpoints.has(urlObj.protocol);
@@ -396,10 +396,18 @@ window.Spicetify = {
 				if (body) {
 					if (method === "get") {
 						const params = new URLSearchParams(body);
-						finalURL += `?${params.toString()}`;
+						const useSeparator = shouldUseCORSProxy && new URL(finalURL).search.startsWith("?");
+						finalURL += `${useSeparator ? "&" : "?"}${params.toString()}`;
 					} else options.body = !Array.isArray(body) && typeof body === "object" ? JSON.stringify(body) : body;
 				}
-				if (shouldUseCORSProxy) finalURL = `${corsProxyURL}/${finalURL}`;
+				if (shouldUseCORSProxy) {
+					finalURL = corsProxyURLTemplate.replace(/{url}/, finalURL);
+					try {
+						new URL(finalURL);
+					} catch {
+						console.error("[spicetifyWrapper] Invalid CORS Proxy URL template");
+					}
+				}
 
 				const Authorization = `Bearer ${Spicetify.Platform.AuthorizationAPI.getState().token.accessToken}`;
 				let injectedHeaders = {};
@@ -459,7 +467,7 @@ window.Spicetify = {
 		() => {
 			webpackDidCallback = true;
 		},
-		6
+		12
 	);
 
 	let chunks = Object.entries(require.m);