Homework assignment for Nizkocenovci d.o.o

Homework

Description

Your homework assignment is to develop a application that takes in departure location, arrival location and date and time of departure and returns all possible routes on certain date that start in departure location and finish in arrival location. The data for routes can be found on Deutschebahn (DB) website.

Application must accept input from two different sources:

• API /search?departure=Berlin+HBF&arrival=Frankfurt(M)Flughafen&date=2016-03-01+13:37:00
• Command line php search.php --departure="Berlin+HBF" --arrival="Frankfurt(M)Flughafen" --date="2016-03-01 13:37:00"

Names of GET parameters (departure=...), command line script (search.php) and script arguments (--departure=...) can be renamed as you like. Just provide me with a proper usage commands.

The application has to consists of three main parts:

• Getting search params from the user.
• Executing search on DB and parsing the HTML data.
• Returning result in human readable matter.

Example

The data for the example can be found at:

http://reiseauskunft.bahn.de/bin/query.exe/en?S=Berlin+HBF&Z=Frankfurt(M)Flughafen&date=01.03.2016&time=13:37&start=1&from_gt=1&dbkanal_004=L01_S01_D001_KPK0054_anreiselink_LZ03

Keep in mind that to get all the data for the whole day, you have to click "Later" button a couple of times.

So for the example data, the response should look something like.

For the command line

$ php search.php --departure="Berlin HBF" --arrival="Frankfurt(M)Flughafen" --date="2016-03-01 13:37:00"

Berlin Hbf   Frankfurt(M)Flughafen   13:34   18:04   89 EUR   125 EUR
Berlin Hbf   Frankfurt(M)Flughafen   13:49   18:21   49 EUR   125 EUR
....

The search returned 17 routes in 12.23 seconds.

For the API

{
    "data": {
        "routes": [
            {
                "departure": "Berlin Hbf",
                "location": "Frankfurt(M)Flughafen",
                "departure_time": "13:34",
                "arrival_time": "18:04",
                "price_low": 89,
                "price_high": 125,
                "currency": "EUR",
            },
            {
                "departure": "Berlin Hbf",
                "location": "Frankfurt(M)Flughafen",
                "departure_time": "13:49",
                "arrival_time": "18:21",
                "price_low": 49,
                "price_high": 125,
                "currency": "EUR",
            },...
        ]
    },
    "found": 17,
    "time_taken": 12.23
}

The number of routes fetched and number of seconds that the script took, should also be provided.

What tech can you use?

• PHP: 5.5.*
• Database: MySQL / MariaDB or PostgreSQL. (if needed)
• Framework: Laravel5, Symfony3, Lumen or Silex. (You can also use custom solution without a framework. But usage of external libraries is encouraged.)
• Composer for installing external libraries.
• Git for tracking code changes
• Application has to work on Ubuntu 14.04 LTS (but can be developed on any other OS).

^{_{Disclaimer: If needed you can use different tech stack, but has to be confirmed by me first. So contact me if needed.}}

What should you send back?

• Working code (on some git repository). I encourage usage of public github projects. So just fork this repo.
• Manual on how to set up the application on the linux system. (add this below)
• Short example of usage. (add this below)

What is evaluated?

• Fully working application
• Simplicity of application
• Architecture of application
• Smart usage of external libraries.
• Performance of application
• Coding style & standard
• Code documentation
• Proper usage of Git with meaningful messages.
• General impression on the solution.

For some extra points

• Automated Tests (unit and/or functional)
• Caching of searches (so the second search with same params is faster than the previous one)

Your application

Describe here how to install and use your application.

How to set up application:

$ echo "Add your install process here."
$ git clone git@github.com:goavio/homework.git homework
$ cd homework
# Install composer like stated here https://getcomposer.org/download/.
$ php composer.phar install

How use the application:

$ echo "Add your usage info here."