Iris/src/js/services/ui/middleware.js

import ReactGA from 'react-ga';
const uiActions = require('./actions.js');

const UIMiddleware = (function () {
  return (store) => (next) => (action) => {
    switch (action.type) {
      case 'MOPIDY_STATE':

        // Get the current track from our index
        var { tracks } = store.getState().core;
        var current_track_uri = store.getState().core.current_track;
        var current_track = null;
        if (tracks[current_track_uri] !== undefined) {
          current_track = tracks[current_track_uri];
        }
        next(action);
        break;

      case 'SET_WINDOW_TITLE':

        var window_title = '';

        if (action.play_state) {
          var { play_state } = action;
        } else {
          var { play_state } = store.getState().mopidy;
        }

        if (action.title) {
          var { title } = action;
        } else {
          var title = store.getState().ui.window_title;
        }

        document.title = `${window_title} ${title}`;

        next(action);
        break;

      case 'OPEN_MODAL':
        if (store.getState().ui.allow_reporting) {
          ReactGA.event({ category: 'Modal', action: 'Opened', label: action.modal.name });
        }
        $('body').addClass('modal-open');
        store.dispatch(uiActions.hideContextMenu());
        store.dispatch(uiActions.hideTouchContextMenu());
        next(action);
        break;

      case 'CLOSE_MODAL':
        if (store.getState().ui.allow_reporting) {
          ReactGA.event({ category: 'Modal', action: 'Closed', label: null });
        }
        $('body').removeClass('modal-open');
        next(action);
        break;

      case 'HIDE_CONTEXT_MENU':
        if (store.getState().ui.context_menu) {
          setTimeout(
            () => {
              store.dispatch(uiActions.removeContextMenu());
            },
            200,
          );
          next(action);
        }
        break;

      case 'HIDE_TOUCH_CONTEXT_MENU':
        if (store.getState().ui.context_menu) {
          setTimeout(
            () => {
              store.dispatch(uiActions.removeTouchContextMenu());
            },
            200,
          );
          next(action);
        }
        break;

      case 'BROWSER_NOTIFICATION':

        var notification = window.Notification || window.mozNotification || window.webkitNotification;
        if (typeof notification === 'undefined') return false;
        if (typeof notification !== 'undefined') notification.requestPermission((permission) => { });

        // handle nested data objects
        var data = {};
        if (typeof (action.data)) data = action.data;
        if (typeof (data.data)) data = { ...data, ...data.data };

        // construct our browser notification
        var title = '';
        var options = {
          body: '',
          dir: 'auto',
          lang: 'EN',
          tag: 'iris',
        };
        if (data.title) title = data.title;
        if (data.body) options.body = data.body;
        if (data.icon) options.icon = data.icon;

        // make it so
        var notification = new notification(title, options);
        break;

      case 'CREATE_NOTIFICATION':

        // start a timeout to close this notification
        if (!action.notification.sticky) {
          setTimeout(
            () => {
              store.dispatch(uiActions.closeNotification(action.notification.key));
            },
            action.notification.duration * 1000,
          );
        }

        next(action);
        break;

      case 'CLOSE_NOTIFICATION':
        var notifications = { ...store.getState().ui.notifications };

        // start a timeout to remove this notification
        // This gives us time to animate out the notification before we remove the data
        setTimeout(
          () => {
            store.dispatch(uiActions.removeNotification(action.key));
          },
          200,
        );

        next(action);
        break;

      case 'REMOVE_NOTIFICATION':

        // Manual removal
        if (action.manual) {
          var notifications = { ...store.getState().ui.notifications };

          // If a broadcast, add to suppressed_broadcasts
          if (notifications[action.key] && notifications[action.key].type == 'broadcast') {
            store.dispatch({
              type: 'SUPPRESS_BROADCAST',
              key: action.key,
            });
          }
        }

        next(action);
        break;

      case 'BROADCASTS_LOADED':
        var suppressed_broadcasts = [];
        if (store.getState().ui.suppressed_broadcasts !== undefined) {
          suppressed_broadcasts = store.getState().ui.suppressed_broadcasts;
        }

        for (let i = 0; i < action.broadcasts.length; i++) {
          const broadcast = action.broadcasts[i];

          if (!suppressed_broadcasts.includes(broadcast.key)) {
            if (broadcast.message) {
              var data = {
                key: (broadcast.key ? broadcast.key : null),
                title: (broadcast.title ? broadcast.title : null),
                content: (broadcast.message ? broadcast.message : null),
                links: (broadcast.links ? broadcast.links : null),
                type: 'broadcast',
                sticky: true,
              };
              store.dispatch(uiActions.createNotification(data));
            }
          }
        }

        next(action);
        break;

      case 'START_PROCESS':
        store.dispatch({
          type: action.key,
          data: action.data,
        });
        store.dispatch({
          type: `${action.key}_STARTED`,
        });
        next(action);
        break;

      case 'RESUME_PROCESS':
        store.dispatch({
          type: action.key,
          data: store.getState().ui.processes[action.key].data,
        });
        next(action);
        break;

      case 'PROCESS_CANCELLED':
        store.dispatch({
          type: `${action.key}_CANCELLED`,
        });
        store.dispatch(uiActions.closeProcess(action.key));
        next(action);
        break;

      case 'PROCESS_FINISHED':
        store.dispatch({
          type: `${action.key}_FINISHED`,
        });

        // start a timeout to remove this notification
        // This gives us time to animate out the notification before we remove the data
        if (action.completionMessage) {
          store.dispatch(uiActions.updateProcess(
            action.key,
            action.completionMessage.content,
            {},
            action.completionMessage.description,
            action.completionMessage.level,
          ));
          if (!action.completionMessage.sticky) {
            setTimeout(
              () => {
                store.dispatch(uiActions.closeProcess(action.key));
              },
              5000,
            );
          }
        } else {
          store.dispatch(uiActions.closeProcess(action.key));
        }

        next(action);
        break;

      case 'CLOSE_PROCESS':
        setTimeout(
          () => {
            store.dispatch(uiActions.removeProcess(action.key));
          },
          200,
        );
        next(action);
        break;

      case 'SET_LANGUAGE':
        const { language } = action;
        window.language = language;
        store.dispatch(uiActions.set({ language }));
        break;

      // This action is irrelevant to us, pass it on to the next middleware
      default:
        return next(action);
    }
  };
}());

export default UIMiddleware;