server: implement channels

server/api/response.go

@@ -21,3 +21,19 @@ func NewUserListResponse(users []*User) []render.Renderer {
 func (u *UserPayload) Render(w http.ResponseWriter, r *http.Request) error {
 	return nil
 }
+
+func NewChannelPayloadResponse(channel *Channel) *ChannelPayload {
+	return &ChannelPayload{Channel: channel}
+}
+
+func NewChannelListResponse(channels []*Channel) []render.Renderer {
+	list := []render.Renderer{}
+	for _, channel := range channels {
+		list = append(list, NewChannelPayloadResponse(channel))
+	}
+	return list
+}
+
+func (c *ChannelPayload) Render(w http.ResponseWriter, r *http.Request) error {
+	return nil
+}