From d1758c74b00a3f83c39745cd9af147a7f8f2b12b Mon Sep 17 00:00:00 2001
From: ckohen <chaikohen@gmail.com>
Date: Fri, 8 Oct 2021 07:30:01 -0700
Subject: [PATCH] feat(RequestManager): support setting global headers in
 options (#70)

Co-authored-by: Advaith <advaithj1@gmail.com>
Co-authored-by: Vlad Frangu <kingdgrizzle@gmail.com>
---
 packages/rest/src/lib/REST.ts            | 5 +++++
 packages/rest/src/lib/RequestManager.ts  | 1 +
 packages/rest/src/lib/utils/constants.ts | 1 +
 3 files changed, 7 insertions(+)

diff --git a/packages/rest/src/lib/REST.ts b/packages/rest/src/lib/REST.ts
index d220fb6..1899c16 100644
--- a/packages/rest/src/lib/REST.ts
+++ b/packages/rest/src/lib/REST.ts
@@ -17,6 +17,11 @@ export interface RESTOptions {
 	 * @default 'https://cdn.discordapp.com'
 	 */
 	cdn: string;
+	/**
+	 * Additional headers to send for all API requests
+	 * @default {}
+	 */
+	headers: Record<string, string>;
 	/**
 	 * The extra offset to add to rate limits in milliseconds
 	 * @default 50
diff --git a/packages/rest/src/lib/RequestManager.ts b/packages/rest/src/lib/RequestManager.ts
index 911336e..a8697b5 100644
--- a/packages/rest/src/lib/RequestManager.ts
+++ b/packages/rest/src/lib/RequestManager.ts
@@ -197,6 +197,7 @@ export class RequestManager extends EventEmitter {
 
 		// Create the required headers
 		const headers: RequestHeaders = {
+			...this.options.headers,
 			'User-Agent': `${DefaultUserAgent} ${options.userAgentAppendix}`.trim(),
 		};
 
diff --git a/packages/rest/src/lib/utils/constants.ts b/packages/rest/src/lib/utils/constants.ts
index 4f87780..8715de4 100644
--- a/packages/rest/src/lib/utils/constants.ts
+++ b/packages/rest/src/lib/utils/constants.ts
@@ -9,6 +9,7 @@ export const DefaultUserAgent = `DiscordBot (${Package.homepage}, ${Package.vers
 export const DefaultRestOptions: Required<RESTOptions> = {
 	api: 'https://discord.com/api',
 	cdn: 'https://cdn.discordapp.com',
+	headers: {},
 	offset: 50,
 	retries: 3,
 	timeout: 15_000,