propagate a query parameter for ai server changes

Author: jwunderl

pxtlib/browserutils.ts

@@ -1451,6 +1451,21 @@ namespace pxt.BrowserUtils {
         return url;
     }
 
+    export function getCopilotServerParam(): "ppe" | "prod" | undefined {
+        if (typeof window === "undefined") return undefined;
+        const query = pxt.Util.parseQueryString(window.location.search || "");
+        const value = (query["useCopilotServer"] || "").toLowerCase();
+        return value === "ppe" || value === "prod" ? (value as "ppe" | "prod") : undefined;
+    }
+
+    export function appendCopilotServerQueryParam(url: string): string {
+        const value = getCopilotServerParam();
+        if (!value) return url;
+        const params = new URLSearchParams();
+        params.set("useCopilotServer", value);
+        return appendUrlQueryParams(url, params);
+    }
+
     export function legacyCopyText(element: HTMLInputElement | HTMLTextAreaElement) {
         element.focus();
         element.setSelectionRange(0, 9999);

teachertool/src/services/backendRequests.ts

@@ -90,7 +90,7 @@ export async function loadTestableCollectionFromDocsAsync<T>(fileNames: string[]
 }
 
 export async function askCopilotQuestionAsync(shareId: string, question: string): Promise<string | undefined> {
-    const url = `/api/copilot/question`;
+    const url = pxt.BrowserUtils.appendCopilotServerQueryParam(`/api/copilot/question`);
 
     question = pxt.Util.cleanData(question);
 

webapp/src/cloud.ts

@@ -697,8 +697,8 @@ export async function aiErrorExplainRequest(
     outputFormat: "tour_json" | "text",
     locale: string
 ): Promise<string | undefined> {
-    const startUrl = `/api/copilot/startexplainerror`;
-    const statusUrl = `/api/copilot/explainerrorstatus`;
+    const startUrl = pxt.BrowserUtils.appendCopilotServerQueryParam(`/api/copilot/startexplainerror`);
+    const statusUrl = pxt.BrowserUtils.appendCopilotServerQueryParam(`/api/copilot/explainerrorstatus`);
 
     const data = { lang, code, errors, target, outputFormat, locale };