const Immutable = require('immutable');
import * as MuncherActions from '../../actions/board/muncher.actions';
import { SETTINGS } from '../../App';

const initial = { x: 0, y: 0, frozen: false };

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

    switch (action.action) {
        case MuncherActions.LEFT:
            return Immutable.Map(state).set('x', state.x - 1).toObject();

        case MuncherActions.RIGHT:
            return Immutable.Map(state).set('x', state.x + 1).toObject();

        case MuncherActions.UP:
            return Immutable.Map(state).set('y', state.y - 1).toObject();

        case MuncherActions.DOWN:
            return Immutable.Map(state).set('y', state.y + 1).toObject();

        case MuncherActions.FREEZE:
            return Immutable.Map(state).set('frozen', true).toObject();

        case MuncherActions.UNFREEZE:
            return Immutable.Map(state).set('frozen', false).toObject();
    }

    return state;
};

export default reducer;