const fs = require("fs");
const filePath = "data.txt";

fs.readFile( filePath, 'UTF-8', (err,  data )=>{

    let CommandsList = data.split("\n");
    let horizontalPosition = 0 , depth= 0;


    for( let i =0 ; i < CommandsList.length; i++){
        let [Command , amount] = CommandsList[i].split(" ");

        console.log(Command);
        console.log(amount);
        
        switch (Command){
            case 'forward':
                horizontalPosition += Number(amount);
                break;
            case 'down':
                depth += Number(amount);
                break;
            case 'up':
                depth -= Number(amount);
                break;

        }

    }

    console.log(`Final depth: ${depth}, Final Horizontal position: ${horizontalPosition}`);
    console.log( `The answer is: ${horizontalPosition * depth}` )



});