import * as R from "remeda";
import { test, expect } from "vitest";
import fs from "fs-extra";
import path from 'path';

import { spy } from '../01/main.js';

export const sampleInput = `A Y
B X
C Z`;

export const puzzleInput =
  fs.readFileSync( path.join( path.dirname(import.meta.url), "input").replace('file:',''), "utf8");

const playMap = {
    X: 'A', // rock
    Y: 'B', // paper
    Z: 'C', // scissors
}

export const parseInput = R.createPipe(
    text => text.split("\n"),
    R.map( entry => entry.split(' ') ),
    R.map( ([a,b]) => [a,playMap[b]] ),
)


const playScore = {
    A: 1,
    B: 2,
    C: 3,
};

const draw = 3;
const lost = 0;
const win = 6;

const outcome = ( opponent, me ) => {
    if( opponent === me ) return draw;
    if( opponent === 'A' ) {
        return me === 'C' ? lost : win;
    }
    if( opponent === 'B' ) {
        return me === 'A' ? lost : win;
    }
    return me === 'B' ? lost : win;
}

export const mapScores = ([opponent,me]) => [ outcome(opponent,me), playScore[me] ];

export const solutionPart1 = R.createPipe(
    parseInput,
    R.filter( ([a]) => a  ), // remove last line
    R.map( mapScores ),
    R.map( R.sumBy(R.identity) ),
    R.sumBy(R.identity)
);