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Merge pull request mouredev#4522 from qwik-zgheib/main
#11-13 - JS/TS
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‎Roadmap/11 - MANEJO DE FICHEROS/javascript/qwik-zgheib.js‎

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/* you need install package readline-sync */
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import { writeFile, readFile, unlink } from "fs";
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import readline from "readline-sync";
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/* -- exercise */
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const createFile = (fileName, content) => {
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writeFile(fileName, content, (err) => {
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if (err) {
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console.error("Error writing file:", err);
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return;
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}
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console.log("File created successfully!");
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});
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};
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const readFileContent = (fileName) => {
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readFile(fileName, "utf8", (err, data) => {
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if (err) {
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console.error("Error reading file:", err);
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return;
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}
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console.log("File content:", data);
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});
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};
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const deleteFile = (fileName) => {
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unlink(fileName, (err) => {
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if (err) {
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console.error("Error deleting file:", err);
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return;
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}
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console.log("File deleted successfully!");
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});
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};
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const githubUsername = "qwik-zgheib";
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const content = `Name: Qwik Zgheib\nAge: 22\nFavorite Programming Language: JavaScript`;
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const fileName = `${githubUsername}.txt`;
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createFile(fileName, content);
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readFileContent(fileName);
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deleteFile(fileName);
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/* -- extra challenge */
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import fs from "fs";
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import path from "path";
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const filePath = path.join(process.cwd(), "sales.txt");
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const SalesManager = {
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addProduct: () => {
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const name = readline.question("Enter product name: ");
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const quantity = readline.questionInt("Enter quantity sold: ");
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const price = readline.questionFloat("Enter price: ");
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const productLine = `${name}, ${quantity}, ${price}\n`;
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fs.appendFileSync(filePath, productLine);
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console.log("Product added.");
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},
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viewProducts: () => {
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if (!fs.existsSync(filePath)) {
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console.log("No products found.");
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return;
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}
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const data = fs.readFileSync(filePath, "utf8");
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console.log("Current Products:\n" + data);
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},
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updateProduct: () => {
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if (!fs.existsSync(filePath)) {
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console.log("No products to update.");
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return;
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}
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const data = fs.readFileSync(filePath, "utf8");
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const products = data.split("\n").filter((line) => line.trim() !== "");
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const name = readline.question("Enter product name to update: ");
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const productIndex = products.findIndex((line) => line.split(", ")[0] === name);
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if (productIndex !== -1) {
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const quantity = readline.questionInt("Enter new quantity sold: ");
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const price = readline.questionFloat("Enter new price: ");
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products[productIndex] = `${name}, ${quantity}, ${price}`;
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fs.writeFileSync(filePath, products.join("\n") + "\n");
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console.log("Product updated.");
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} else {
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console.log("Product not found.");
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}
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},
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deleteProduct: () => {
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if (!fs.existsSync(filePath)) {
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console.log("No products to delete.");
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return;
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}
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const data = fs.readFileSync(filePath, "utf8");
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const products = data.split("\n").filter((line) => line.trim() !== "");
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const name = readline.question("Enter product name to delete: ");
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const newProducts = products.filter((line) => line.split(", ")[0] !== name);
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fs.writeFileSync(filePath, newProducts.join("\n") + "\n");
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console.log("Product deleted.");
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},
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calculateTotalSales: () => {
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if (!fs.existsSync(filePath)) {
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console.log("No sales data found.");
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return;
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}
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const data = fs.readFileSync(filePath, "utf8");
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const products = data.split("\n").filter((line) => line.trim() !== "");
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let totalSales = 0;
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products.forEach((line) => {
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const [, quantity, price] = line.split(", ");
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totalSales += parseInt(quantity) * parseFloat(price);
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});
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console.log("Total Sales: $" + totalSales.toFixed(2));
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},
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calculateSalesByProduct: () => {
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if (!fs.existsSync(filePath)) {
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console.log("No sales data found.");
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return;
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}
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const data = fs.readFileSync(filePath, "utf8");
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const products = data.split("\n").filter((line) => line.trim() !== "");
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const salesByProduct = {};
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products.forEach((line) => {
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const [name, quantity, price] = line.split(", ");
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if (!salesByProduct[name]) {
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salesByProduct[name] = 0;
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}
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salesByProduct[name] += parseInt(quantity) * parseFloat(price);
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});
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for (const [name, total] of Object.entries(salesByProduct)) {
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console.log(`${name}: $${total.toFixed(2)}`);
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}
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},
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exit: () => {
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if (fs.existsSync(filePath)) {
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fs.unlinkSync(filePath);
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}
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console.log("Exiting and deleting sales file.");
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process.exit();
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},
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};
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const mainMenu = () => {
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while (true) {
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console.log(
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"\n1. Add Product\n2. View Products\n3. Update Product\n4. Delete Product\n5. Calculate Total Sales\n6. Calculate Sales by Product\n7. Exit"
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);
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let choice = readline.questionInt("Enter your choice: ");
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while (choice < 1 || choice > 7) {
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console.log("Invalid choice. Please try again.");
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choice = readline.questionInt("Enter your choice: ");
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}
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if (choice === 1) SalesManager.addProduct();
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if (choice === 2) SalesManager.viewProducts();
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if (choice === 3) SalesManager.updateProduct();
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if (choice === 4) SalesManager.deleteProduct();
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if (choice === 5) SalesManager.calculateTotalSales();
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if (choice === 6) SalesManager.calculateSalesByProduct();
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if (choice === 7) SalesManager.exit();
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}
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};
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mainMenu();

‎Roadmap/11 - MANEJO DE FICHEROS/typescript/qwik-zgheib.ts‎

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import readline from "readline-sync";
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import fs from "fs";
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import path from "path";
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const createFile = (fileName: string, content: string): void => {
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fs.writeFile(fileName, content, (err) => {
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if (err) {
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console.error("Error writing file:", err);
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return;
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}
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console.log("File created successfully!");
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});
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};
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const readFileContent = (fileName: string): void => {
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fs.readFile(fileName, "utf8", (err, data) => {
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if (err) {
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console.error("Error reading file:", err);
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return;
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}
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console.log("File content:", data);
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});
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};
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const deleteFile = (fileName: string): void => {
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fs.unlink(fileName, (err) => {
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if (err) {
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console.error("Error deleting file:", err);
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return;
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}
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console.log("File deleted successfully!");
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});
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};
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const githubUsername: string = "qwik-zgheib";
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const content: string = `Name: Qwik Zgheib\nAge: 22\nFavorite Programming Language: JavaScript`;
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const fileName: string = `${githubUsername}.txt`;
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createFile(fileName, content);
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readFileContent(fileName);
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deleteFile(fileName);
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/* -- extra challenge */
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const filePath: string = path.join(process.cwd(), "sales.txt");
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interface SalesManagerType {
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addProduct: () => void;
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viewProducts: () => void;
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updateProduct: () => void;
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deleteProduct: () => void;
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calculateTotalSales: () => void;
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calculateSalesByProduct: () => void;
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exit: () => void;
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}
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const SalesManager: SalesManagerType = {
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addProduct: (): void => {
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const name: string = readline.question("Enter product name: ");
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const quantity: number = readline.questionInt("Enter quantity sold: ");
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const price: number = readline.questionFloat("Enter price: ");
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const productLine: string = `${name}, ${quantity}, ${price}\n`;
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fs.appendFileSync(filePath, productLine);
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console.log("Product added.");
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},
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viewProducts: (): void => {
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if (!fs.existsSync(filePath)) {
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console.log("No products found.");
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return;
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}
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const data: string = fs.readFileSync(filePath, "utf8");
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console.log("Current Products:\n" + data);
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},
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updateProduct: (): void => {
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if (!fs.existsSync(filePath)) {
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console.log("No products to update.");
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return;
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}
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const data: string = fs.readFileSync(filePath, "utf8");
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const products: string[] = data.split("\n").filter((line) => line.trim() !== "");
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const name: string = readline.question("Enter product name to update: ");
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const productIndex: number = products.findIndex((line) => line.split(", ")[0] === name);
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if (productIndex !== -1) {
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const quantity: number = readline.questionInt("Enter new quantity sold: ");
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const price: number = readline.questionFloat("Enter new price: ");
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products[productIndex] = `${name}, ${quantity}, ${price}`;
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fs.writeFileSync(filePath, products.join("\n") + "\n");
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console.log("Product updated.");
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} else {
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console.log("Product not found.");
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}
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},
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deleteProduct: (): void => {
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if (!fs.existsSync(filePath)) {
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console.log("No products to delete.");
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return;
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}
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const data: string = fs.readFileSync(filePath, "utf8");
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const products: string[] = data.split("\n").filter((line) => line.trim() !== "");
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const name: string = readline.question("Enter product name to delete: ");
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const newProducts: string[] = products.filter((line) => line.split(", ")[0] !== name);
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fs.writeFileSync(filePath, newProducts.join("\n") + "\n");
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console.log("Product deleted.");
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},
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calculateTotalSales: (): void => {
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if (!fs.existsSync(filePath)) {
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console.log("No sales data found.");
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return;
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}
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const data: string = fs.readFileSync(filePath, "utf8");
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const products: string[] = data.split("\n").filter((line) => line.trim() !== "");
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let totalSales: number = 0;
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products.forEach((line) => {
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const [, quantity, price] = line.split(", ");
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totalSales += parseInt(quantity) * parseFloat(price);
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});
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console.log("Total Sales: $" + totalSales.toFixed(2));
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},
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calculateSalesByProduct: (): void => {
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if (!fs.existsSync(filePath)) {
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console.log("No sales data found.");
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return;
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}
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const data: string = fs.readFileSync(filePath, "utf8");
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const products: string[] = data.split("\n").filter((line) => line.trim() !== "");
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const salesByProduct: Record<string, number> = {};
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products.forEach((line) => {
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const [name, quantity, price] = line.split(", ");
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if (!salesByProduct[name]) {
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salesByProduct[name] = 0;
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}
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salesByProduct[name] += parseInt(quantity) * parseFloat(price);
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});
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for (const [name, total] of Object.entries(salesByProduct)) {
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console.log(`${name}: $${total.toFixed(2)}`);
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}
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},
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exit: (): void => {
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if (fs.existsSync(filePath)) {
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fs.unlinkSync(filePath);
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}
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console.log("Exiting and deleting sales file.");
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process.exit();
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},
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};
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const mainMenu = (): void => {
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while (true) {
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console.log(
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"\n1. Add Product\n2. View Products\n3. Update Product\n4. Delete Product\n5. Calculate Total Sales\n6. Calculate Sales by Product\n7. Exit"
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);
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let choice: number = readline.questionInt("Enter your choice: ");
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while (choice < 1 || choice > 7) {
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console.log("Invalid choice. Please try again.");
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choice = readline.questionInt("Enter your choice: ");
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}
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if (choice === 1) SalesManager.addProduct();
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if (choice === 2) SalesManager.viewProducts();
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if (choice === 3) SalesManager.updateProduct();
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if (choice === 4) SalesManager.deleteProduct();
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if (choice === 5) SalesManager.calculateTotalSales();
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if (choice === 6) SalesManager.calculateSalesByProduct();
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if (choice === 7) SalesManager.exit();
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}
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};
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mainMenu();

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