   _____       _                   _       
  / ____|     | |                 (_)      
 | (___  _   _| |_ __ _  ___       _  ___  
  \___ \| | | | __/ _` |/ __|     | |/ _ \ 
  ____) | |_| | || (_| | (__   _  | | (_) |
 |_____/ \__, |\__\__,_|\___| (_) |_|\___/ 
          __/ |                            
         |___/                              

                     ./work ./share ./relax

Sytac Development Challenge

Congratulations to making it this far! The next step in the hiring process consist in a small coding assignment.
We would like to know you better, and there is no better way than to see how you code!

We appreciate that you may be doing this assignment next to your day job. Or you might have set a weekend aside to complete it. Please let our Sytac HR know how much time you need to complete this challenge. You are not evaluated on time.

This challenge has been crafted so that it would require an experienced developer somewhere between 3 and 6 hours to complete. If you find yourself spending considerably more time, please reach out to your Sytac HR and ask for guidance.

Code review/evaluation criteria 🏅

Your submission will be evaluated by Sytac on the following criteria:

Requirements coverage completeness
Correctness of the implementation
Decent test coverage
Code cleanliness
Efficiency of the solution
Careful choice of tools and data formats
Use of production-ready approaches

Delivery format 🚚

Please provide the code as a Maven or Gradle project. You are free to choose any language/framework/library that runs on the JVM and fits with the purpose of the application. Our preference is for Kotlin or Java languages.

Markdown instructions on how to run the application are always appreciated.

How to work with GitHub 😼

You are assigned to your own private repository. Please create a feature branch and do not commit on master. When the assignment is completed, please create a pull request on the master of this repository, which will automatically notify your contact person about the completion of your delivery.

Software required on your machine 🔧

Docker
Git
a GitHub account
a recent JDK release (11+)
your favorite IDE

Your task: the data harvester 🕵️‍♂️

Your task, should you choose to accept it, is to create a program that harvest real time usage information about the users of video streaming events' server. A list of requirements is available down below.
In order to fulfill the assignment, you will have to consume three streaming endpoints by running the video streaming events' server on your machine as described here.

Mandatory requirements to implement 📜

Your application should collect the data from all three streams for 20 seconds or until the third occurrence of a user with first name Sytac on either of streams, whichever comes first.

The application should then output the aggregated view of the data collected, detailing:

user id
user's name and surname
user's age
all the events that the user has executed
platform where each event has occurred
the show titles
the first person in the cast for each show, if present
the show ids
event time in Amsterdam (CET) timezone and dd-MM-yyyy HH:mm:ss.SSS format

and also:

the total number of shows released in 2020 or later (for any type of event, user or platform)
for how long the 3 http streams were consumed by your harvester program, in milliseconds

The output should be either:

printed on standard output, or
written into a file, or
returned via an HTTP GET request.

You decide the output format and output method, observing that the output data is easily interpreted by another program and humans.

Short on time? Here is a hint 💡

  "PT" -> "UTC"
  "CA" -> "America/Toronto"
  "US" -> "America/Los_Angeles"
  "RU" -> "Europe/Moscow"
  "ID" -> "Asia/Jakarta"
  "CN" -> "Asia/Shanghai"

Here is another hint, for good luck 💡💡

Unfortunately, the server is bugged: from time to time the data returned is not well-formed. Feel free to skip these messages.

Bonus points 🌟

The following requirements are optional. Develop these if you are looking to impress us!

Along with the Mandatory requirements, collect:

the total number of successful streaming events per user:
- a successful streaming event is a defined as (sub)sequence of a stream-started, followed right after temporally by a stream-finished for the same show id and platform. For Example:
  - [...,{stream-started, s_01, sytflix, 01_01_2000}, {stream-finished, s_01, sytflix, 02_01_2000},...] => ✅ successful streaming event
  - [...,{stream-started, s_01, sytflix, 01_01_2000}, {stream-finished, s_01, sytazon, 02_01_2000},...] => ❌ nothing (different platforms)
  - [...,{stream-started, s_01, sytflix, 01_01_2000}, {stream-finished, s_02, sytflix, 02_01_2000},...] => ❌ nothing (different shows)
  - [...,{stream-started, s_01, sytflix, 01_01_2000}, {show_liked, s_01, sytflix, 02_01_2000}, {stream-finished, s_01, sytflix, 03_01_2000},...] => ❌ nothing (show_liked in between)
  - [...,{stream-finished, s_01, sytflix, 01_01_2000}, {stream-started, s_01, sytflix, 02_01_2000},...] => ❌ nothing (no closing stream-ended event)
the percentage of started stream events out of all events occurred on the Sytflix platform

Questions ❓

If you have questions regarding the development, reach out to the Sytac recruiter that is taking care of your hiring process. They reply the message to the most suitable Sytac technical officer that will answer your queries in a timely manner.

Terms

It is not allowed to publish the content of this readme or your solution to the internet. Please do not share it, thanks!

razi-ahmad/Java-razi-ahmad-1