feat(web-proxy): throw error when trying to access apiv1 on apiv2

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
 		}

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"
+}