Introduction

As a developer, I'm always looking for tools that can streamline my workflow and boost my productivity. So, when I heard about Google's Gemini CLI, I was eager to put it to the test. I decided to build a real-world application with it: a task manager.

In this article, I'll walk you through how I used Gemini CLI to create a task management application from scratch. We'll cover everything from setting up the project to implementing features like adding, editing, archiving, and deleting tasks.

The Stack

For this project, I chose a modern and robust stack:

• React: A popular JavaScript library for building user interfaces.
• TypeScript: A typed superset of JavaScript that enhances code quality and maintainability.
• Tailwind CSS: A utility-first CSS framework for rapid UI development.
• Vite: A blazing-fast build tool and development server.

Getting Started: Project Setup

The first thing I did was ask Gemini CLI to set up the project. I simply gave it the following prompt:

"Initialize a new React project with TypeScript and Tailwind CSS using Vite."

Gemini CLI quickly generated the entire project structure, including all the necessary configuration files (tailwind.config.js, vite.config.ts, tsconfig.json, etc.). This saved me a significant amount of time and effort.

Building the UI: Components and Styling

With the project set up, it was time to start building the UI. I started with the main App.tsx component, which serves as the entry point of the application. I also created a TaskForm.tsx component to handle the creation of new tasks.

I used Tailwind CSS for styling. I'm a big fan of utility-first CSS, and Tailwind's extensive set of classes allowed me to create a clean and modern UI without writing a single line of custom CSS.

Here's a glimpse of the App.tsx component:

import { useState } from 'react';
import TaskForm from './components/TaskForm';

interface Task {
  id: number;
  text: string;
  completed: boolean;
}

function App() {
  const [tasks, setTasks] = useState<Task[]>([
    { id: 1, text: 'Learn React', completed: true },
    { id: 2, text: 'Build a Todo App', completed: false },
  ]);
  // ... (rest of the component)
}

And the TaskForm.tsx component:

import React from 'react';

interface TaskFormProps {
  taskInput: string;
  setTaskInput: (input: string) => void;
  addTask: (e: React.FormEvent) => void;
}

const TaskForm: React.FC<TaskFormProps> = ({ taskInput, setTaskInput, addTask }) => {
  return (
    <form onSubmit={addTask} className="mb-6">
      <textarea
        value={taskInput}
        onChange={e => setTaskInput(e.target.value)}
        placeholder="Add a new task..."
        className="w-full p-2 border-2 border-gray-300 rounded-md focus:outline-none focus:border-blue-500"
      />
      <button type="submit" className="w-full mt-2 bg-blue-500 text-white px-4 py-2 rounded-md hover:bg-blue-600">
        Add Task
      </button>
    </form>
  );
};

export default TaskForm;

Implementing the Core Features

With the UI in place, I moved on to implementing the core features of the task manager. I used React's useState hook to manage the state of the application, including the list of tasks, the task input, and the current view (tasks or archived).

Here's a breakdown of the key features and how I implemented them with the help of Gemini CLI:

• Adding Tasks: The addTask function creates a new task object and adds it to the tasks array.
• Toggling Tasks: The toggleTask function updates the completed status of a task.
• Editing Tasks: The startEditing, cancelEditing, and saveTask functions allow users to edit the text of a task.
• Archiving and Deleting Tasks: The archiveTasks, restoreTasks, deleteTasks, and permanentlyDeleteTasks functions provide a complete workflow for managing tasks.

I was impressed by how Gemini CLI was able to generate the code for these features with just a few simple prompts. For example, to implement the "edit task" feature, I simply said:

"Add the ability to edit a task. When the user clicks an 'Edit' button, the task should become a text area. There should be 'Save' and 'Cancel' buttons."

Gemini CLI then generated the necessary state variables, event handlers, and JSX to implement this feature.

The Final Result

After a few hours of working with Gemini CLI, I had a fully functional task management application. The application allows users to:

• Create new tasks
• Mark tasks as complete
• Edit tasks
• Archive tasks
• Restore archived tasks
• Delete tasks
• Permanently delete archived tasks

The application is built with a modern and robust stack, and the code is clean, well-structured, and easy to maintain.

My experience with Gemini CLI was overwhelmingly positive. It's a powerful tool that can significantly speed up the development process. I was particularly impressed by its ability to understand natural language prompts and generate high-quality code.

I would definitely recommend Gemini CLI to any developer who is looking for a way to be more productive. It's a game-changer, and I'm excited to see how it evolves in the future.