1 files changed, 35 insertions, 0 deletions
diff --git a/routers/api/v1/activitypub/response.go b/routers/api/v1/activitypub/response.go
new file mode 100644
index 0000000..42ef375
--- /dev/null
+++ b/routers/api/v1/activitypub/response.go
@@ -0,0 +1,35 @@
+// Copyright 2023 The Forgejo Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package activitypub
+
+import (
+	"net/http"
+
+	"code.gitea.io/gitea/modules/activitypub"
+	"code.gitea.io/gitea/modules/forgefed"
+	"code.gitea.io/gitea/modules/log"
+	"code.gitea.io/gitea/services/context"
+
+	ap "github.com/go-ap/activitypub"
+	"github.com/go-ap/jsonld"
+)
+
+// Respond with an ActivityStreams object
+func response(ctx *context.APIContext, v any) {
+	binary, err := jsonld.WithContext(
+		jsonld.IRI(ap.ActivityBaseURI),
+		jsonld.IRI(ap.SecurityContextURI),
+		jsonld.IRI(forgefed.ForgeFedNamespaceURI),
+	).Marshal(v)
+	if err != nil {
+		ctx.ServerError("Marshal", err)
+		return
+	}
+
+	ctx.Resp.Header().Add("Content-Type", activitypub.ActivityStreamsContentType)
+	ctx.Resp.WriteHeader(http.StatusOK)
+	if _, err = ctx.Resp.Write(binary); err != nil {
+		log.Error("write to resp err: %v", err)
+	}
+}