const fs = require('fs');
const path = require('path');
const { promisify } = require('util');
const readdir = promisify(fs.readdir);
const stat = promisify(fs.stat);

const action = process.argv[2];
const folderPath = process.argv[3];
const reportFile = 'report.json';

if (!action || !folderPath) {
console.log('Используйте: node app.js <report|print> <путь к папке>');
process.exit(1);
}

async function analyzeFolder(folder) {
const entries = await readdir(folder, { withFileTypes: true });
let totalSize = 0;
let fileCount = 0;
let folderCount = 0;

for (const entry of entries) {
const fullPath = path.join(folder, entry.name);
if (entry.isDirectory()) {
folderCount++;
const { totalSize: folderSize, fileCount: folderFiles, folderCount: subFolderCount } = await analyzeFolder(fullPath);
totalSize += folderSize;
fileCount += folderFiles;
folderCount += subFolderCount;
} else if (entry.isFile()) {
const fileStats = await stat(fullPath);
fileCount++;
totalSize += fileStats.size;
}
}

return { totalSize, fileCount, folderCount };
}

async function generateReport(folder) {
const stats = await analyzeFolder(folder);
const reportData = {
folder: folder,
files: stats.fileCount,
folders: stats.folderCount,
totalSize: stats.totalSize,
};

fs.writeFile(reportFile, JSON.stringify(reportData, null, 2), (err) => {
if (err) {
console.error('Ошибка при записи отчета:', err);
process.exit(1);
}
console.log(`Отчет сохранен в ${reportFile}`);
});
}

async function printReport(folder) {
const stats = await analyzeFolder(folder);
console.log(`Папка: ${folder}`);
console.log(`Количество файлов: ${stats.fileCount}`);
console.log(`Количество папок: ${stats.folderCount}`);
console.log(`Общий размер файлов: ${stats.totalSize} байт`);
}

if (action === 'report') {
generateReport(folderPath);
} else if (action === 'print') {
printReport(folderPath);
} else {
console.log('Неизвестное действие. Используйте "report" или "print".');
}