import { Updux } from "updux";
import u from "updeep";
import { createSelector } from "reselect";

import reqs from "../reqs.js";

export const ftlTypes = ["none", "standard", "advanced"];

const dux = new Updux({
  subduxes: { reqs },
  initial: {
    type: "none",
  },
  actions: {
        setFtl: null,
        setFtlReqs: null,
  },
});
export default dux;

dux.setMutation( 'setFtl', type => u({type}) );
dux.setMutation( 'setFtlReqs', reqs => u({reqs}) );

export function calcFtlReqs(type,shipMass) {
    if(type==="none") return { cost: 0, mass: 0 };

    const mass = Math.ceil(shipMass / 10);

    return {
        mass,
        cost: mass * ( type === 'advanced' ? 3 : 2 ),
    }
}

// needs to be at the top level
export const ftlReqsReaction = store =>
  createSelector(
    [
      (ship) => ship.propulsion.ftl.type,
      (ship) => ship.reqs.mass,
    ],
    (type,shipMass) =>
      store.dispatch.setFtlReqs(calcFtlReqs(type,shipMass))
      );