fix(rest/request_manager): pass authorization header instead (#534)

* fix big brain bot auth on proxy rest

* whoops

* fix header

src/bot.ts

@@ -10,6 +10,7 @@ import { baseEndpoints, GATEWAY_VERSION } from "./util/constants.ts";
 import { spawnShards } from "./ws/shard_manager.ts";
 
 export let authorization = "";
+export let restAuthorization = "";
 export let botID = "";
 export let applicationID = "";
 
@@ -94,6 +95,7 @@ export async function startBigBrainBot(data: BigBrainBotConfig) {
   authorization = `Bot ${data.token}`;
   identifyPayload.token = `Bot ${data.token}`;
 
+  if (data.restAuthorization) restAuthorization = data.restAuthorization;
   if (data.restURL) baseEndpoints.BASE_URL = data.restURL;
   if (data.cdnURL) baseEndpoints.CDN_URL = data.cdnURL;
   if (data.wsURL) proxyWSURL = data.wsURL;
@@ -133,4 +135,6 @@ export interface BigBrainBotConfig extends BotConfig {
   restURL?: string;
   /** This can be used to forward the CDN handling to a proxy. */
   cdnURL?: string;
+  /** This is the authorization header that your rest proxy will validate */
+  restAuthorization?: string;
 }

src/rest/request_manager.ts

@@ -1,4 +1,4 @@
-import { authorization, eventHandlers } from "../bot.ts";
+import { authorization, eventHandlers, restAuthorization } from "../bot.ts";
 import {
   Errors,
   FileContent,
@@ -221,7 +221,13 @@ function runMethod(
     !url.startsWith(`${BASE_URL}/v${API_VERSION}`) &&
     !url.startsWith(IMAGE_BASE_URL)
   ) {
-    return fetch(url, { method, body: body ? JSON.stringify(body) : undefined })
+    return fetch(url, {
+      method,
+      body: body ? JSON.stringify(body) : undefined,
+      headers: {
+        authorization: restAuthorization,
+      },
+    })
       .then((res) => res.json())
       .catch((error) => {
         console.error(error);