feat: #11 - Typescript

Author: qwik zgheib mossad bashit

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

@@ -0,0 +1,182 @@
+import readline from "readline-sync";
+import fs from "fs";
+import path from "path";
+
+const createFile = (fileName: string, content: string): void => {
+  fs.writeFile(fileName, content, (err) => {
+    if (err) {
+      console.error("Error writing file:", err);
+      return;
+    }
+    console.log("File created successfully!");
+  });
+};
+
+const readFileContent = (fileName: string): void => {
+  fs.readFile(fileName, "utf8", (err, data) => {
+    if (err) {
+      console.error("Error reading file:", err);
+      return;
+    }
+    console.log("File content:", data);
+  });
+};
+
+const deleteFile = (fileName: string): void => {
+  fs.unlink(fileName, (err) => {
+    if (err) {
+      console.error("Error deleting file:", err);
+      return;
+    }
+    console.log("File deleted successfully!");
+  });
+};
+
+const githubUsername: string = "qwik-zgheib";
+
+const content: string = `Name: Qwik Zgheib\nAge: 22\nFavorite Programming Language: JavaScript`;
+
+const fileName: string = `${githubUsername}.txt`;
+
+createFile(fileName, content);
+readFileContent(fileName);
+deleteFile(fileName);
+
+/* -- extra challenge */
+const filePath: string = path.join(process.cwd(), "sales.txt");
+
+interface SalesManagerType {
+  addProduct: () => void;
+  viewProducts: () => void;
+  updateProduct: () => void;
+  deleteProduct: () => void;
+  calculateTotalSales: () => void;
+  calculateSalesByProduct: () => void;
+  exit: () => void;
+}
+
+const SalesManager: SalesManagerType = {
+  addProduct: (): void => {
+    const name: string = readline.question("Enter product name: ");
+    const quantity: number = readline.questionInt("Enter quantity sold: ");
+    const price: number = readline.questionFloat("Enter price: ");
+
+    const productLine: string = `${name}, ${quantity}, ${price}\n`;
+    fs.appendFileSync(filePath, productLine);
+    console.log("Product added.");
+  },
+
+  viewProducts: (): void => {
+    if (!fs.existsSync(filePath)) {
+      console.log("No products found.");
+      return;
+    }
+    const data: string = fs.readFileSync(filePath, "utf8");
+    console.log("Current Products:\n" + data);
+  },
+
+  updateProduct: (): void => {
+    if (!fs.existsSync(filePath)) {
+      console.log("No products to update.");
+      return;
+    }
+    const data: string = fs.readFileSync(filePath, "utf8");
+    const products: string[] = data.split("\n").filter((line) => line.trim() !== "");
+    const name: string = readline.question("Enter product name to update: ");
+
+    const productIndex: number = products.findIndex((line) => line.split(", ")[0] === name);
+    if (productIndex !== -1) {
+      const quantity: number = readline.questionInt("Enter new quantity sold: ");
+      const price: number = readline.questionFloat("Enter new price: ");
+      products[productIndex] = `${name}, ${quantity}, ${price}`;
+      fs.writeFileSync(filePath, products.join("\n") + "\n");
+      console.log("Product updated.");
+    } else {
+      console.log("Product not found.");
+    }
+  },
+
+  deleteProduct: (): void => {
+    if (!fs.existsSync(filePath)) {
+      console.log("No products to delete.");
+      return;
+    }
+    const data: string = fs.readFileSync(filePath, "utf8");
+    const products: string[] = data.split("\n").filter((line) => line.trim() !== "");
+    const name: string = readline.question("Enter product name to delete: ");
+
+    const newProducts: string[] = products.filter((line) => line.split(", ")[0] !== name);
+    fs.writeFileSync(filePath, newProducts.join("\n") + "\n");
+    console.log("Product deleted.");
+  },
+
+  calculateTotalSales: (): void => {
+    if (!fs.existsSync(filePath)) {
+      console.log("No sales data found.");
+      return;
+    }
+    const data: string = fs.readFileSync(filePath, "utf8");
+    const products: string[] = data.split("\n").filter((line) => line.trim() !== "");
+
+    let totalSales: number = 0;
+    products.forEach((line) => {
+      const [, quantity, price] = line.split(", ");
+      totalSales += parseInt(quantity) * parseFloat(price);
+    });
+    console.log("Total Sales: $" + totalSales.toFixed(2));
+  },
+
+  calculateSalesByProduct: (): void => {
+    if (!fs.existsSync(filePath)) {
+      console.log("No sales data found.");
+      return;
+    }
+    const data: string = fs.readFileSync(filePath, "utf8");
+    const products: string[] = data.split("\n").filter((line) => line.trim() !== "");
+
+    const salesByProduct: Record<string, number> = {};
+    products.forEach((line) => {
+      const [name, quantity, price] = line.split(", ");
+      if (!salesByProduct[name]) {
+        salesByProduct[name] = 0;
+      }
+      salesByProduct[name] += parseInt(quantity) * parseFloat(price);
+    });
+
+    for (const [name, total] of Object.entries(salesByProduct)) {
+      console.log(`${name}: $${total.toFixed(2)}`);
+    }
+  },
+
+  exit: (): void => {
+    if (fs.existsSync(filePath)) {
+      fs.unlinkSync(filePath);
+    }
+    console.log("Exiting and deleting sales file.");
+    process.exit();
+  },
+};
+
+const mainMenu = (): void => {
+  while (true) {
+    console.log(
+      "\n1. Add Product\n2. View Products\n3. Update Product\n4. Delete Product\n5. Calculate Total Sales\n6. Calculate Sales by Product\n7. Exit"
+    );
+
+    let choice: number = readline.questionInt("Enter your choice: ");
+
+    while (choice < 1 || choice > 7) {
+      console.log("Invalid choice. Please try again.");
+      choice = readline.questionInt("Enter your choice: ");
+    }
+    if (choice === 1) SalesManager.addProduct();
+    if (choice === 2) SalesManager.viewProducts();
+    if (choice === 3) SalesManager.updateProduct();
+    if (choice === 4) SalesManager.deleteProduct();
+    if (choice === 5) SalesManager.calculateTotalSales();
+    if (choice === 6) SalesManager.calculateSalesByProduct();
+    if (choice === 7) SalesManager.exit();
+  }
+};
+
+mainMenu();