IMostafaR / start-mysql-express.js

Starting with mySQL

Start mySQL with express.js

This is my work assigned by Route-Academy during learning backend web development.

The provided code is a Node.js and Express.js server implementation that exposes APIs for managing users and products stored in a MySQL database. The APIs allow operations such as retrieving users and products, adding new entries, updating existing entries, and deleting entries (CRUD).

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Usage

The code in this module runs with the main server file index.js in the root directory.

Scripts

Install dependencies:

npm install

To run the server:

node index.js

The server will start running on http://localhost:3000.

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API Documentation

Users

Get all users

Retrieves information about all users.

• URL: /users
• Method: GET

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Add a user

Adds a new user to the database.

• URL: /users
• Method: POST

Request Body:

{
  "name": "Ahmed",
  "email": "[e-mail]",
  "password": "908jkha2",
  "age": 25
}

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Update a user

Updates an existing user in the database.

• URL: /users
• Method: PUT

Request Body:

{
  "id": 2,
  "name": "Mostafa",
  "email": "[e-mail]",
  "password": "jkji982"
}

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Delete a user

Deletes a user from the database.

• URL: /users
• Method: DELETE

Request Body:

{
  "id": 20
}

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Search for users by name and age

Retrieves users whose name starts with "a" and age is less than 30.

• URL: /users/a30
• Method: GET

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Search for users by IDs

Retrieves users whose IDs match the provided list.

• URL: /users/ids
• Method: GET

Request Body:

[1, 2, 6, 7, 8]

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Products

Get all products

Retrieves information about all products.

• URL: /products
• Method: GET

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Add a product

Adds a new product to the database.

• URL: /products
• Method: POST

Request Body:

{
  "name": "Samsung",
  "price": 1400,
  "desc": "Not Bad",
  "createdBy": "Mostafa",
  "userId": 21
}

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Update a product

Updates an existing product in the database.

• URL: /products
• Method: PUT

Request Body:

{
  "id": 10,
  "name": "iPhone",
  "price": "1400",
  "desc": "Not Bad",
  "createdBy": "Mostafa",
  "userId": 20
}

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Delete a product

Deletes a product from the database.

• URL: /products
• Method: DELETE

Request Body:

{
  "id": 1,
  "userId": 20
}

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Search for products by price

Retrieves products with prices greater than 3000.

• URL: /products/p3000
• Method: GET

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Function Descriptions

isEmailExist Middleware

Checks if an email already exists in the database before adding a new user. It ensures that no duplicate emails are registered.

isIdExist Middleware

Checks if a user with a given ID exists in the database before updating or deleting a user. It prevents updating or deleting non-existent users.

isProductExist Middleware

Checks if a product with a given name and user ID already exists in the database before adding a new product. It ensures that no duplicate products are added for the same user.

isProductIdExist Middleware

Checks if a product with a given ID and user ID exists in the database before updating or deleting a product. It prevents updating or deleting non-existent products or unauthorized access to products.

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Author

• GitHub - IMostafaR
• Linkedin - @imostafarh