Extreme Carpaccio

extreme startup + elephant carpaccio

Technical Instructions

1. To be able to play, you will need to start an http server in your local machine. Many servers are already available in the clients directory, you only need to clone this repository and pick will. Otherwise, you can create your own http server.

2. The organiser will start a central server which will send requests to each participant's server. Since the organiser communicates the URL for the server dashboard, go there and register your local server with your local IP address and the port under your http server is listening on (URL example: http://:/)

3. The central server will start sending orders to your local client like this:

   POST /order HTTP/1.1
   {
       "prices": [65.6,27.26,32.68],
       "quantities": [6,8,10],
       "country": "IE",
       "reduction":"STANDARD"
   }
   

4. Your job is to calculate the amount of the received orders and answer with a JSON object bill, i.e.: { "total": 1000.0 } (the server checks responses using two decimal digits of precision, so, i. e., 10.1234 and 10.12 are equal).

5. Your score will be shown in the dashboard

6. The server will send you feedback based on what you have responded. So check if your local http server already handles POST /feedback and, if not, implement it, otherwise you will not be able to figure out what is going on with your responses. Here is an example of a feedback the central server can send to you:

   POST /feedback HTTP/1.1
   {
       "type": "ERROR",
       "content": "The field \"total\" in the response is missing."
   }
   

Functional Instructions

To calculate the bill, you need to consider the tax of the country from which the order came from and the reduction.

Taxes

Here is the tax table used in the exercise:

Country	Code	Tax
Germany	DE	20%
United Kingdom	UK	21%
France	FR	20%
Italy	IT	25%
Spain	ES	19%
Poland	PL	21%
Romania	RO	20%
Netherlands	NL	20%
Belgium	BE	24%
Greece	EL	20%
Czech Republic	CZ	19%
Portugal	PT	23%
Hungary	HU	27%
Sweden	SE	23%
Austria	AT	22%
Bulgaria	BG	21%
Denmark	DK	21%
Finland	FI	17%
Slovakia	SK	18%
Ireland	IE	21%
Croatia	HR	23%
Lithuania	LT	23%
Slovenia	SI	24%
Latvia	LV	20%
Estonia	EE	22%
Cyprus	CY	21%
Luxembourg	LU	25%
Malta	MT	20%

For the order {"prices":[15.99],"quantities":[1],"country":"ES","reduction":"STANDARD"}, for example, the response should be {"total":19.03}.

Reductions

Following the STANDARD reductions applied for the most part of the orders:

Total	Reduction

= 50 000 EUR | 15 % = 10 000 EUR | 10 % = 7 000 EUR | 7 % = 5 000 EUR | 5 % = 1 000 EUR | 3 %

For the order {"prices":[4.1,8.03,86.83,65.62,44.82],"quantities":[10,3,5,4,5],"country":"AT","reduction":"STANDARD"}, for example, the response should be {"total":1166.62}.

Note that:

1. reductions are applied after the taxes;
2. another reduction types can appear during the game. You need to stay tuned in the server's feedback to figure out how to calculate it.

Penalties and Cash

Note that if you answer something that does not match the expected bill, you will be charged with 10% of the amount of the right bill. If your answer is correct, you earn the total of the bill. If your answer does not match the expected object bill or is empty, no penalties are applied.

Have fun :)