feat: handle binary content

server/internal/handler/error.go

@@ -3,6 +3,8 @@ package handler
 import (
 	"encoding/json"
 	"net/http"
+
+	"git.max-richter.dev/max/marka/server-new/internal/adapters"
 )
 
 type ErrorResponse struct {
@@ -18,3 +20,8 @@ func writeJSON(w http.ResponseWriter, code int, v any) {
 	w.WriteHeader(code)
 	_ = json.NewEncoder(w).Encode(v)
 }
+
+func writeFile(w http.ResponseWriter, file *adapters.FsFile) {
+	w.Header().Set("Content-Type", file.Type)
+	w.Write(file.Content)
+}