import { Map as ImmutableMap } from "immutable";

import { changeLayout } from "mastodon/actions/app";
import { STORE_HYDRATE } from "mastodon/actions/store";
import { layoutFromWindow } from "mastodon/is_mobile";

const initialState = ImmutableMap({
  streaming_api_base_url: null,
  access_token: null,
  layout: layoutFromWindow(),
  permissions: "0",
});

export default function meta(state = initialState, action) {
  switch(action.type) {
    case STORE_HYDRATE:
      return state.merge(action.state.get("meta")).set("permissions", action.state.getIn(["role", "permissions"]));
    case changeLayout.type:
      return state.set("layout", action.payload.layout);
    default:
      return state;
  }
}