feat: set x-webhook-filter-deploy on all requests

src/main.ts

@@ -6,6 +6,7 @@ import config from "./config.ts";
 import { contextMiddleware, getRequestLog } from "./context.ts";
 import { hasKey, verify } from "./crypto.ts";
 import handler from "./handler.ts";
+import { setMetaHeader } from "./util.ts";
 
 const app = new Hono();
 
@@ -14,6 +15,12 @@ app.use(contextMiddleware);
 // use context's requestlog for server logs
 app.use(logger((...args) => getRequestLog().log(...args)));
 
+// add deploy header to responses
+app.use(async (c, next) => {
+    await next();
+    setMetaHeader(c, "deploy", config.deployId);
+});
+
 if (config.mainRedirect) {
     app.get("/", (c) => {
         return c.redirect(config.mainRedirect!);
@@ -38,12 +45,8 @@ app.post("/:id/:token", async (c) => {
     res = new Response(res.body, res);
 
     // set metadata headers
-    meta = {
-        "deploy": config.deployId,
-        ...meta,
-    };
     for (const [key, value] of Object.entries(meta)) {
-        res.headers.set(`x-webhook-filter-${key}`, value);
+        setMetaHeader(c, key, value);
     }
 
     // remove other headers that don't make sense here

src/util.ts

@@ -1,3 +1,5 @@
+import type { Context } from "@hono/hono";
+
 export function parseBool(s: string): boolean {
     return ["1", "true", "on", "y", "yes"].includes(s.toLowerCase());
 }
@@ -51,3 +53,7 @@ export function requestLog(deliveryId: string | undefined) {
 }
 
 export type RequestLog = ReturnType<typeof requestLog>;
+
+export function setMetaHeader(c: Context, key: string, value: string): void {
+    c.res.headers.set(`x-webhook-filter-${key}`, value);
+}