const Immutable = require('immutable');

import * as MessageActions from '../../actions/board/message.actions';
import MessageCtrl from '../../controllers/message.controller';

const exclamations = [
    'Congratulations!',
    'Yippee!',
    'Woohoo!',
    'Nice work!',
    'Great job!',
    'Boom!',
    'All finished!',
    'Shazam!'
];

const initial = { message: '', hidden: true };

const reducer = (state = initial, action) => {
    if (action.type !== MessageActions.MESSAGE_ACTION) {
        return state;
    }

    switch (action.action) {
        case MessageActions.EXCLAIM:
            MessageCtrl.show();
            const msg = exclamations[Math.floor(Math.random() * exclamations.length)];
            return Immutable.Map(state)
                .set('hidden', false)
                .set('message', msg)
                .toObject();

        case MessageActions.SHOW:
            MessageCtrl.show();
            return Immutable.Map(state)
                .set('hidden', false)
                .set('message', action.message)
                .toObject();

        case MessageActions.HIDE:
            MessageCtrl.hide();
            return Immutable.Map(state)
                .set('hidden', true)
                .toObject();
    }

    return state;
};

export default reducer;