#!/usr/bin/env node;
/******************************************************************************
 * This program reads characters from STDIN and then computes a 
 * word frequency table.
 * 
 * Copyright © 2021 Richard Lesh.  All rights reserved.
 *****************************************************************************/

const Utils = require('./Utils');

const main = async () => {
    let totalCount = 0;
    let countTable = new Map();
    let line;
    while ((line = await Utils.getline(process.stdin)) !== undefined) {
        const words = line.split(/\W+/);
        for (let word of words) {
            const lc = word.toLowerCase();
            if (Utils.cpLength(lc) > 0) {
                if (!countTable.has(lc)) {
                    countTable.set(lc, 1);
                } else {
                    countTable.set(lc, countTable{lc} + 1);
                }
                ++totalCount;
            }
        }
    }

    console.log("Word\tCount\tFreq");
    const sortedKeys = Array.from(countTable.keys()).sort();
    for (let x of sortedKeys) {
        const FREQ = countTable.get(x) / totalCount;
        console.log(Utils.format("{0:s}\t{1:d}\t{2:.6f}", x, countTable.get(x), FREQ));
    }
}
main().catch( e => { console.error(e) } );