From 2cdaad588c82508734d04c2169503782dfe8556a Mon Sep 17 00:00:00 2001
From: daikei <daikei@noreply.codeberg.org>
Date: Mon, 17 Apr 2023 22:36:22 +0000
Subject: [PATCH] [Fix] Properly replace koa-fix-trailing-slashes with inhouse
 script (#9870)

This follows up #9869, with an awaited ``next()``, fixing the script.

> I'm looking to remove another 5kb package, replacing it with an in-house script. The commit i'm proposing translates the entire job of koa-remove-trailing-slashes into a 206 byte script that gets the job done well.

(just to show the code does work)
![](https://s3.kitsunes.club/storage/41c7854d-d01e-4f4c-94dd-8b651e2d7367.gif)

Reviewed-on: https://codeberg.org/calckey/calckey/pulls/9870
Co-authored-by: daikei <daikei@noreply.codeberg.org>
Co-committed-by: daikei <daikei@noreply.codeberg.org>
---
 packages/backend/package.json        | 1 -
 packages/backend/src/server/index.ts | 8 +++++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/packages/backend/package.json b/packages/backend/package.json
index b02af2c033..97e86cd263 100644
--- a/packages/backend/package.json
+++ b/packages/backend/package.json
@@ -78,7 +78,6 @@
 		"koa-json-body": "5.3.0",
 		"koa-logger": "3.2.1",
 		"koa-mount": "4.0.0",
-		"koa-remove-trailing-slashes": "2.0.3",
 		"koa-send": "5.0.1",
 		"koa-slow": "2.1.0",
 		"koa-views": "7.0.2",
diff --git a/packages/backend/src/server/index.ts b/packages/backend/src/server/index.ts
index be1f71a7ae..191556c408 100644
--- a/packages/backend/src/server/index.ts
+++ b/packages/backend/src/server/index.ts
@@ -10,7 +10,6 @@ import Router from "@koa/router";
 import mount from "koa-mount";
 import koaLogger from "koa-logger";
 import * as slow from "koa-slow";
-
 import { IsNull } from "typeorm";
 import config from "@/config/index.js";
 import Logger from "@/services/logger.js";
@@ -30,7 +29,6 @@ import proxyServer from "./proxy/index.js";
 import webServer from "./web/index.js";
 import { initializeStreamingServer } from "./api/streaming.js";
 import { koaBody } from "koa-body";
-import removeTrailingSlash from "koa-remove-trailing-slashes";
 import { v4 as uuid } from "uuid";
 
 export const serverLogger = new Logger("server", "gray", false);
@@ -39,7 +37,11 @@ export const serverLogger = new Logger("server", "gray", false);
 const app = new Koa();
 app.proxy = true;
 
-app.use(removeTrailingSlash());
+// Replace trailing slashes 
+app.use(async (ctx, next) => {
+	if (ctx.request.path !== "/" && ctx.request.path.endsWith('/')) return ctx.redirect(ctx.request.path.replace(/\/$/, ""))
+	else await next()
+});
 
 if (!["production", "test"].includes(process.env.NODE_ENV || "")) {
 	// Logger