import {combineReducers} from "redux";
import {ADD_BATCH_TO_STATES} from "../actions/states";

export const states = combineReducers({
    task: objectStates("task"),
    room: objectStates("room"),
    rack: objectStates("rack"),
    machine: objectStates("machine"),
});

function objectStates(type) {
    return (state = {}, action) => {
        if (action.objectType !== type) {
            return state;
        }

        if (action.type === ADD_BATCH_TO_STATES) {
            const batch = {};
            for (let i in action.objects) {
                batch[action.objects[i].tick] = Object.assign(
                    {},
                    state[action.objects[i].tick],
                    batch[action.objects[i].tick],
                    {[action.objects[i][action.objectType + "Id"]]: action.objects[i]}
                );
            }

            return Object.assign(
                {},
                state,
                batch
            );
        }

        return state;
    };
}