Sinema Room REST Service

A simple implementation of Virtual Cinema Theater. It is based on Spring Boot and built with Intellij IDEA.

About

Always wanted to have your private movie theater and screen only the movies you like? You can buy a fancy projector and set it up in a garage, but how can you sell tickets? Having a booth is old-fashioned, so let's create a special service for that! Make good use of Spring and write a REST service that can show the available seats, sell and refund tickets, and display the statistics of your venue. Pass me the popcorn, please!

Learning outcomes

In this project, I learned how to create a simple Spring REST service that will help you manage a small movie theatre. Handle HTTP requests in controllers, create services and respond with JSON objects.

Example:

Example 1: a GET /seats request

Response body:

{
   "total_rows":9,
   "total_columns":9,
   "available_seats":[
      {
         "row":1,
         "column":1,
         "price":10
      },
      {
         "row":1,
         "column":2,
         "price":10
      },
      {
         "row":1,
         "column":3,
         "price":10
      },

      ........

      {
         "row":9,
         "column":8,
         "price":8
      },
      {
         "row":9,
         "column":9,
         "price":8
      }
   ]
}

Buying and returning a ticket.

Example 1: a POST /purchase request

Request body:

{
    "row": 3,
    "column": 4
}

Response body:

{
    "token": "e739267a-7031-4eed-a49c-65d8ac11f556",
    "ticket": {
        "row": 3,
        "column": 4,
        "price": 10
    }
}

Example 2: POST /return with the correct token

Request body:

{
    "token": "e739267a-7031-4eed-a49c-65d8ac11f556"
}

Response body:

{
    "returned_ticket": {
        "row": 1,
        "column": 2,
        "price": 10
    }
}

Example 3: POST /return with an expired token

Request body:

{
    "token": "e739267a-7031-4eed-a49c-65d8ac11f556"
}

Response body:

{
    "error": "Wrong token!"
}

Example 4: a POST /purchase request, the ticket is already booked

Request body:

{
    "row": 3,
    "column": 4
}

Response body:

{
    "error": "The ticket has been already purchased!"
}

Example 5: a POST /purchase request, a wrong row number

Request body:

{
    "row": 15,
    "column": 4
}

Response body:

{
    "error": "The number of a row or a column is out of bounds!"
}

The statistics

Endpoint /stats will handle POST requests with URL parameters. If the URL parameters contain a password key with a super_secret value, it will return the movie theatre statistics in the following format:

{
    "current_income": 0,
    "number_of_available_seats": 81,
    "number_of_purchased_tickets": 0
}

Example 1: a POST /stats request with no parameters

Response body:

{
    "error": "The password is wrong!"
}

Example 2: a POST /stats request with the correct password == super_secret

Response body:

{
    "current_income": 30,
    "number_of_available_seats": 78,
    "number_of_purchased_tickets": 3
}