Cinema Room Project

Study project by creating Spring REST service that simulates the work of cinema
Handle HTTP requests in a controller, create services and respond with JSON objects

Implementation Features

• creating Spring REST service
• handle GET/POST requests
• process and respond with JSON data
• throw custom exceptions

Implementation

The service creates a Cinema with a certain number of seats and a cost depending on the location

By GET request /seats returns JSON

{
   "total_rows":5,
   "total_columns":6,
   "available_seats":[
      {
         "row":1,
         "column":1
      },

      ........

      {
         "row":5,
         "column":5
      },
      {
         "row":5,
         "column":6
      }
   ]
}

By POST request /purchase you can buy a ticket. The seat determined by the incoming JSON

{
    "row": 5,
    "column": 7
}

If the purchase went through, JSON is returned

{
    "token": "00ae15f2-1ab6-4a02-a01f-07810b42c0ee",
    "ticket": {
        "row": 5,
        "column": 7,
        "price": 8
    }
}

Where there is information about the place and unique purchase tokens

If the seat is already taken returns 400 code in JSON

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

If the location is incorrect, then an error is returned.

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

POST request on /return returns the ticket if token is specified

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

Returns on success

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

Else

"error": "Wrong token!"

You can also get statistics using a POST request /stats using the URL parameter password

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

Incorrect data returns 401 error with text

"error": "The password is wrong!"