import * as R from "remeda";
import u from "updeep";

import { readFile } from "../05/part1.js";

const parseLine = (line) => {
    const {groups} = line.match( /Valve (?<valve>..).*flow rate=(?<flow>\d+).*valves? (?<exits>.*)/ );
    return [ groups.valve, {
        exits: groups.exits.split(',').map( x => x.trim() ),
        flow: groups.flow
    } ]
}
const readInput = (...args) =>
  R.pipe(
    readFile(...args),
    (lines) => lines.split("\n"),
    R.compact, // remove last line
    R.map(parseLine),
    Object.fromEntries,
  );

export const puzzleInput = readInput(import.meta.url, "input");
export const sample = readInput(import.meta.url, "sample");

function bestMoveFor(tunnels,minutesLeft,opened,location='AA',totalSteam=0,activeSteam=0) {
    console.log(minutesLeft, totalSteam);

    if(minutesLeft<=0) return totalSteam;

    totalSteam += activeSteam;

    const possibilities = [];

    if(!opened.includes(location)) {
        possibilities.push(
            bestMoveFor(
                tunnels,
                minutesLeft-1,
                [...opened, location],
                location,
                totalSteam,
                activeSteam + tunnels[location].flow
            )
        )
    }

    for( const exit of tunnels[location].exits ) {
        possibilities.push(
            bestMoveFor(
                tunnels,
                minutesLeft-1,
                opened,
                exit,
                totalSteam,
                activeSteam,
            )
        )
    }

    return Math.max( ...possibilities );
}


export default (tunnels) => {
    return bestMoveFor(tunnels,30,[]);
};