const Immutable = require('immutable');

import * as TroggleActions from '../../actions/board/troggle.actions';
import TroggleLogic from '../../logic/troggle.logic.js';

const initial = [];

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

    switch (action.action) {
        case TroggleActions.MOVE:
            const t = state[action.index];
            const coords1 = TroggleLogic.getMoveCoords(t.x, t.y, t.mx, t.my);
    
            return Immutable.fromJS(state)
                .setIn([action.index, 'x'], coords1.x)
                .setIn([action.index, 'y'], coords1.y)
                .toJS();

        case TroggleActions.CREATE:
            const coords2 = TroggleLogic.getStartingCoords();
            return Immutable.List(state).set(action.index, { x: coords2.x, y: coords2.y }).toArray();

        case TroggleActions.CLEAR_ALL:
            return Immutable.List().toArray();
    };

    return state;
};

export default reducer;