Coding Task

task.md

Coding Interview - The Task

You need to implement the following user story:

As a user, I want to see the trains that fit my travel schedule, So that I can decide what to buy

Steps

Step 1: Call an HTTP API

Write a function that will download schedules from 2 different train carrier API S1 and S2

Schedules can be retrieved from the following two endpoints (we need them both):

• https://60b8cf3cb54b0a0017c047bd.mockapi.io/s1
• https://60b8cf3cb54b0a0017c047bd.mockapi.io/s2

Step 2: Group the data

Merge the schedule s1 and s2 to a single schedule.

Step 3: Search for schedules

• Create a function that will take one input: time in ISO 8601 format, e.g. 2011-12-03T10:15:30+01:00
• The function should return the next 3 trains from the time provided
• The time zone of the schedule is in UTC
• The schedule loops around, i.e. if my input is close to midnight, it should include results from after midnight

Step 4: Expose it to the world

Expose this an HTTP API

Bonus

• Change the S1 endpoint to the following (less reliable):
  • https://mercury-trains.herokuapp.com/s1x
• Can we paralelise the HTTP requests?

Notes

• We don't need to persist the timetable
• Their is no trap, we don't have an hidden S3 carrier that we will add later
• If you take shortcut just tell us it's fine, the time is short
• You can read all the documentation you need, google, copy paste like you do in real life. It doesn't matter if you have forgot