To-Do List Application

This application allows users to perform CRUD operations on to-do items. Users can:

1. Create a to-do item (C) -> /tasks post

2. Read the list of to-do items (R) -> /tasks get

3. Update a to-do item to mark it as complete or incomplete (U) -> /tasks/:id put

4. Delete a to-do item (D) -> /tasks/:id delete

   • using restfulAPI : address + http method
     • tasks post
     • tasks get
     • tasks put
     • tasks delete

Backend Setup

1. Initial Setup

   • Set up npm
   • Use Express for the serverss
   • Use Mongoose for database interaction
   • Create an app listener

2. Define Routes

   • Define the necessary routes for CRUD operations

3. Database Schema

   • Define the database schema for to-do items

   const todoSchema = new mongoose.Schema({
      task: {
        type: String,
        required: true,
      },
      isComplete: {
        type: Boolean,
        default: false,
      },
    });

4. Functionality

   • Implement CRUD operations
   • Implement User Registration
     • Accept email, password, and username
     • Store received information in the database
     • Encrypt passwords before storing
   • Implement User Login
     • Enter email and password and send
     • Check in the database if there is a user with the corresponding email and password
     • If not, login fails
     • If yes, user information + token
     • The frontend stores this information

5. Testing

   • Use Postman for testing API endpoints

Getting Started

Prerequisites

• Node.js
• npm

Deployment

Database Deployment

• MongoDB Atlas: Use MongoDB Atlas for database deployment.

Backend Deployment

• AWS Elastic Beanstalk: Deploy the backend using AWS Elastic Beanstalk.
• Heroku: Alternatively, you can deploy the backend on Heroku.

Frontend Deployment

• Deploy the frontend using your preferred hosting service (e.g., Vercel, Netlify, AWS S3, etc.).

Testing

• Ensure to thoroughly test the application, both backend and frontend functionalities, before and after deployment.

Error Encountered

Gateway Error

I encountered a gateway error:

2024/05/23 09:14:17 [error] 2117#2117: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 50.175.105.250, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8080/", host: "todo-mayster.us-east-2.elasticbeanstalk.com"

solution

The server was configured to use port 5050. To fix this, I updated the server configuration to:

app.listen(process.env.PORT || 5000, () => {
  console.log("server on");
});

The error where const isMatch = bcrypt.compareSync(password, user.password); returns false

userController.loginWithEmail= async(req,res)=>{
    try{
        const {email, password} = req.body
        const user = await User.findOne({email}, "-createdAt -updatedAt -__v");
        if(user){
            const isMatch = bcrypt.compareSync(password, user.password);
            if(isMatch){
                const token = user.generateToken();
                return res.status(200).json({status:"success", user, token})
            }
        }
        throw new Error("userId or password is incorrect!")
    }catch(err){
        res.status(400).json({status: "fail~", err});
    }
};

solution

I changed the password to something other than '0000'