GDG Campus Korea - Try Flutter 경품 추천 코드

lotto.js

const chalkAnimation = require('chalk-animation');
const { blue, gray, cyan, white, bold } = require('chalk');
const { prompt } = require('node-ask');
const parse = require('csv-parse/lib/sync');
const fs = require('fs');
const { shuffle, sample } = require('lodash');
const center = require('center-align');

const fileData = fs.readFileSync('./codelab.csv', 'utf8');
const candidates = parse(fileData).slice(2);

const MAX_LOTTERY_COUNT = 6;
const stocks = [
    {
        name: '라인 프렌즈 무선 마우스',
        count: 2,
    },
    {
        name: '오아 아이브릭 블루투스 스피커',
        count: 2,
    },
    {
        name: '숯먹은 잠자는 강아지 탈취제 (사모예드)',
        count: 2,
    },
];

function clearConsole() {
    process.stdout.write('\033c');
}

function displayOnCenter(maxWidth, text) {
    console.log(center(text, maxWidth));
}

function displayStocks() {
    console.log(bold('다음 경품을 추천합니다 🎉'));
    console.log(white('-------------------------'));

    for (const { name, count } of stocks) {
        if (count > 0) {
            console.log(cyan(name) + bold(` : ${count}개`));
        } else {
            console.log(gray(`[품절] ${name}`));
        }
    }

    console.log('\n');
}

async function drawLottery() {
    clearConsole();
    displayStocks();

    await prompt(white('경품 추천을 하시겠어요? (press ENTER) '));

    const availableStocks = stocks.filter(stock => stock.count > 0);
    const chosenStock = sample(shuffle(availableStocks));

    clearConsole();

    chalkAnimation.rainbow(`${chosenStock.name}를 추첨 중 입니다 🚀`);
    await prompt('');

    clearConsole();

    const winner = sample(shuffle(candidates));
    const winnerIndex = candidates.indexOf(winner);

    const [,name] = winner;

    const title = `🎊🎊🎊 ${chosenStock.name} 당첨 🎊🎊🎊`;
    const titleWidth = title.length + 18;

    console.log(bold(title));
    console.log();
    displayOnCenter(titleWidth, cyan(`${name} 님`));

    console.log();
    console.log();

    candidates.splice(winnerIndex, 1);
    chosenStock.count -= 1;

    await prompt('');
}

async function main() {
    let index = 0;

    clearConsole();
    console.log(bold(`총 ${candidates.length}명이 코드랩을 완료하셨습니다.`));
    console.log(bold('모두들 수고하셨습니다.'));
    await prompt('');

    while (index < MAX_LOTTERY_COUNT) {
        await drawLottery();
        index++;
    }

    clearConsole();
    console.log(blue('경품 추천이 완료되었습니다 :)'));
    console.log();
    console.log();

    await prompt('');
}

main().catch((error) => {
    console.error(error);
    process.exit(1);
});