• Ruby 2.6.2
• Bundler installed for that version (gem install bundler)

bundle install

I've built the task as a trivial CLI app application. See more options bin/runner --help

To get started quickly

curl -O https://s3.amazonaws.com/intercom-take-home-test/customers.txt | bin/runner -l customers.txt

The CLI expects a text file to passed with the l flag

It works with any relative path.

There are 3 main files and a bin file to kickstart the process

App represents the main logic that is responsible for filtering and returning the customers given the Dublin office location and a max distance.

Customer is a wrapper around each line of the text file. It is also the parser of the file given that practically the Customer responsibilities are nothing more than a Struct.

Location is the distance calculator between different locations. It works with any type of locations although we are always feeding it the Dublin office.

The input is very much restricted to a txt file. An improvement maybe it would be to receive an IO object instead