project1

nodeJS/Project/01/index.js

@@ -0,0 +1,70 @@
+const prompt = require('prompt-sync')({ sigint: true });
+const fs = require('fs');
+const filePath = 'todolist.txt';
+
+console.log("Welcome to Tiffy's to-do list!");
+
+const name = prompt("What is your name? ");
+console.log(`Hello, ${name}!`);
+
+const instruction = `You can: 
+(1) Add items to the to-do list 
+(2) Remove items from the to-do list
+(3) Show the to-do list
+(4) Exit the to-do list`;
+console.log(instruction);
+
+function loadToDoList() {
+    const data = fs.existsSync(filePath) ? fs.readFileSync(filePath, 'utf-8') : '';
+    return data ? data.split('\n').filter(item => item.trim() !== '') : [];
+}
+
+let todoList = loadToDoList();
+
+while (true) {
+    const todo = prompt("Would you like to add, remove, show, or exit? ").toLowerCase();
+
+    switch (todo) {
+        case "add":
+            let condition_add = true;
+            while (condition_add) {
+                const add1 = prompt("What would you like to add to the to-do list? ");
+                if (add1.toLowerCase() === "stop") {
+                    condition_add = false;
+                }
+                    todoList.push(add1);
+                    console.log(`You have added "${add1}" to Tiffy's to-do list!`);
+                    console.log(`Type \"stop\" to return to the main menu.`);
+            }
+            fs.writeFileSync(filePath, todoList.join('\n'), 'utf-8');
+            break;
+
+        case "remove":
+            let condition_remove = true;
+            while (condition_remove) {               
+                const remove1 = prompt("What would you like to remove from the to-do list? (Input the number on the list) ");
+                if (remove1.toLowerCase() === "stop") {
+                    condition_remove = false;
+                }
+                    const index = parseInt(remove1) - 1;
+                    const removedTask = todoList.splice(index, 1);
+                    console.log(`You have removed "${removedTask}" from Tiffy's to-do list!`);
+                    console.log(`Type \"stop\" to return to the main menu.`);
+            }
+            fs.writeFileSync(filePath, todoList.join('\n'), 'utf-8');
+            break;
+
+        case "show":
+            console.log("Tiffy's to-do list:");
+            todoList.forEach((task, index) => console.log(`${index + 1}. ${task}`));
+            break;
+
+        case "exit":
+            console.log("Thank you for using Tiffy's to-do list.");
+            return;
+
+        default:
+            console.log("Hey! Tiffy doesn't know what you mean!");
+            break;
+    }
+}