chore(api): reorganize web assets and codegen types+handlers

webserver/router/middleware/activityPub.go

@@ -0,0 +1,48 @@
+package middleware
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/owncast/owncast/core/data"
+	"github.com/owncast/owncast/utils"
+)
+
+// RequireActivityPubOrRedirect will validate the requested content types and
+// redirect to the main Owncast page if it doesn't match.
+func RequireActivityPubOrRedirect(handler http.HandlerFunc) http.HandlerFunc {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if !data.GetFederationEnabled() {
+			w.WriteHeader(http.StatusMethodNotAllowed)
+			return
+		}
+
+		handleAccepted := func() {
+			handler(w, r)
+		}
+
+		acceptedContentTypes := []string{"application/json", "application/json+ld", "application/activity+json", `application/ld+json; profile="https://www.w3.org/ns/activitystreams"`}
+		var accept []string
+		for _, a := range r.Header.Values("Accept") {
+			accept = append(accept, strings.Split(a, ",")...)
+		}
+
+		for _, singleType := range accept {
+			if _, accepted := utils.FindInSlice(acceptedContentTypes, strings.TrimSpace(singleType)); accepted {
+				handleAccepted()
+				return
+			}
+		}
+
+		contentTypeString := r.Header.Get("Content-Type")
+		contentTypes := strings.Split(contentTypeString, ",")
+		for _, singleType := range contentTypes {
+			if _, accepted := utils.FindInSlice(acceptedContentTypes, strings.TrimSpace(singleType)); accepted {
+				handleAccepted()
+				return
+			}
+		}
+
+		http.Redirect(w, r, "/", http.StatusTemporaryRedirect)
+	})
+}