Add list to api

api/http.go

@@ -235,3 +235,19 @@ func (s *HTTPServer) HandlerAPIUserCreate(w http.ResponseWriter, r *http.Request
 	w.WriteHeader(http.StatusAccepted)
 	s.Logger.Infow("Created user.", "req_id", reqID, "remote_addr", r.RemoteAddr, "username", req.Username)
 }
+
+func (s *HTTPServer) HandlerAPIUserList(w http.ResponseWriter, r *http.Request) {
+	reqID := middleware.GetReqID(r.Context())
+
+	l, err := s.Users.List()
+	if err != nil {
+		s.Logger.Warnw("Error listing users.", "req_id", reqID, "error", err)
+		w.WriteHeader(http.StatusInternalServerError)
+		return
+	}
+
+	encoder := json.NewEncoder(w)
+	if err := encoder.Encode(l); err != nil {
+		s.Logger.Warnw("Error encoding response.", "req_id", "error", err)
+	}
+}

api/json.go

@@ -18,3 +18,7 @@ type ResponseAPIFilePost struct {
 	ID      string `json:"id"`
 	URL     string `json:"url"`
 }
+
+type ResponseAPIUserList struct {
+	Usernames []string `json:"usernames"`
+}