#!/usr/bin/env node;
/******************************************************************************
 * This program prints the lyrics to Farmer in the Dell
 * using a map to store the data.
 * 
 * Copyright © 2020 Richard Lesh.  All rights reserved.
 *****************************************************************************/

const PEOPLE = new Map([
    ["farmer", "wife"],
    ["wife", "child"],
    ["child", "nurse"],
    ["nurse", "cow"],
    ["cow", "dog"],
    ["dog", "cat"],
    ["cat", "mouse"],
    ["mouse", "cheese"]
]);

const main = async () => {
    let person = "farmer";

    console.log("The famer in the dell");
    console.log("The famer in the dell");
    console.log("Hi-ho, the derry-o...");
    console.log("The famer in the dell");
    console.log();

    while (person !== "cheese") {
        const OTHER_PERSON = PEOPLE.get(person);
        console.log(["The ", person, " takes the ", OTHER_PERSON].join(''));
        console.log(["The ", person, " takes the ", OTHER_PERSON].join(''));
        console.log("Hi-ho, the derry-o...");
        console.log(["The ", person, " takes the ", OTHER_PERSON].join(''));
        console.log();
        person = OTHER_PERSON;
    }

    console.log("The cheese stands alone");
    console.log("The cheese stands alone");
    console.log("Hi-ho, the derry-o...");
    console.log("The cheese stands alone");
}
main().catch( e => { console.error(e) } );