To do cli

to_do_cli/todoCLI.js

@@ -0,0 +1,112 @@
+const fs = require("fs");
+const readline = require("readline");
+
+const rl = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout,
+  prompt: "> ", // the shape of the prompt > also we can put %
+});
+
+const theList = [];
+
+function menuPrompt() {
+  const theMenu =
+    "(v) View. (n) New. (cX) Complete. (dX) Delete. (s) Save . (q) Quit";
+  console.log(theMenu);
+  rl.prompt();
+}
+
+function showList() {
+  if (theList.length <= 0) {
+    console.log("List is empty...");
+  } else {
+    theList.forEach((entry, index) => {
+      let status = entry.complete === true ? "✔" : " ";
+      console.log(`${index} [${status}] ${entry.title}`);
+    });
+  }
+}
+
+function newEntry(entry = "") {
+  if (entry === "") {
+    console.log("What?");
+    rl.prompt();
+  } else {
+    theList.push({ complete: false, title: entry });
+  }
+}
+
+function completeItem(num) {
+  if (num >= 0 && num < theList.length) {
+    theList[num].complete = true;
+    console.log(`Completed "${theList[num].title}"`);
+  }
+}
+
+function deleteItem(num) {
+  if (num >= 0 && num < theList.length) {
+    const deletedItem = theList.splice(num, 1)[0];
+    console.log(`Deleted "${deletedItem.title}"`);
+  }
+}
+
+function saveList(filename = "") {
+  if (filename === "") {
+    console.log("Where? (myTodos.json)");
+    rl.prompt();
+  } else {
+    fs.writeFileSync(`./${filename}`, JSON.stringify(theList));
+    console.log(`List saved to "${filename}"`);
+  }
+}
+
+if (process.argv.length === 3) {
+  const inputFilename = process.argv[2];
+  fs.readFile(inputFilename, "utf8", (err, data) => {
+    const todos = JSON.parse(data);
+    todos.forEach((todo) => {
+      theList.push(todo);
+    });
+  });
+}
+console.log("Welcome to Todo CLI!\n--------------------");
+menuPrompt();
+
+let curCmd = "";
+rl.on("line", (input) => {
+  if (input === "q" && curCmd === "") {
+    console.log("See you soon! 😊");
+    rl.close();
+    return;
+  } else if (input === "v" && curCmd === "") {
+    showList();
+    menuPrompt();
+  } else if (input === "n" && curCmd === "") {
+    curCmd = "n";
+    newEntry();
+  } else if (curCmd === "n") {
+    newEntry(input);
+    curCmd = "";
+    menuPrompt();
+  } else if (input[0] === "c") {
+    let num = parseInt(input.slice(1));
+    completeItem(num);
+    menuPrompt();
+  } else if (input[0] === "d") {
+    let num = parseInt(input.slice(1));
+    deleteItem(num);
+    menuPrompt();
+  } else if (input === "s" && curCmd === "") {
+    curCmd = "s";
+    saveList();
+  } else if (curCmd === "s") {
+    if (input === "") {
+      input = "myTodos.JSON";
+    }
+    saveList(input);
+    curCmd = "";
+    menuPrompt();
+  } else if (curCmd === "") {
+    menuPrompt();
+  }
+});