From 8a727c6e80410aa61ecac4cf0a84ab4286b5365b Mon Sep 17 00:00:00 2001
From: spiral <spiral@spiral.sh>
Date: Sat, 3 Dec 2022 12:00:41 +0000
Subject: [PATCH] feat(web-proxy): throw error when trying to access apiv1 on
 apiv2

---
 services/web-proxy/main.go | 17 +++++++++++++++++
 services/web-proxy/util.go |  9 +++++++++
 2 files changed, 26 insertions(+)

diff --git a/services/web-proxy/main.go b/services/web-proxy/main.go
index e305a2ec..6d7c72ad 100644
--- a/services/web-proxy/main.go
+++ b/services/web-proxy/main.go
@@ -74,6 +74,23 @@ func (p ProxyHandler) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
 			return
 		}
 
+		if r.URL.Path == "/" {
+			http.Redirect(rw, r, "https://pluralkit.me", http.StatusFound)
+			return
+		}
+
+		if strings.HasPrefix(r.URL.Path, "/v1") {
+			rw.Header().Set("content-type", "application/json")
+			rw.WriteHeader(410)
+			rw.Write([]byte(`{"message":"Unsupported API version","code":0}`))
+		}
+
+		if is_trying_to_use_v1_path_on_v2(r.URL.Path) {
+			rw.WriteHeader(400)
+			rw.Write([]byte(`{"message":"Invalid path for API version","code":0}`))
+			return
+		}
+
 		if is_api_ratelimited(rw, r) {
 			return
 		}
diff --git a/services/web-proxy/util.go b/services/web-proxy/util.go
index be001f2e..552cef49 100644
--- a/services/web-proxy/util.go
+++ b/services/web-proxy/util.go
@@ -63,3 +63,12 @@ func requireEnv(key string) string {
 		return val
 	}
 }
+
+func is_trying_to_use_v1_path_on_v2(path string) bool {
+	return strings.HasPrefix(path, "/v2/s/") ||
+		strings.HasPrefix(path, "/v2/m/") ||
+		strings.HasPrefix(path, "/v2/a/") ||
+		strings.HasPrefix(path, "/v2/msg/") ||
+		path == "/v2/s" ||
+		path == "/v2/m"
+}