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Make sure you have Ruby, Rails, PostgreSQL and Redis installed.
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After the installation run the following commands:
bundle installbin/rails db:seed -
To have the disbursements calculated run the rake task:
bin/rails disbursements:create
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Run the server:
bin/rails sOrders are available on the root endpoint
localhost:3000Disbursements are on the
localhost:3000/disbursementsendpoint. -
Run tests:
bin/rails t
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I decided to try and use repositories for this project even though they are an abstraction on top of AR.
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I did not use the rails convention of the model references (external id foreign keys), this does let use the AR associations and I know that it is useful for many reasons before you call me noob. A risk I am willing to take. I'd try Sequel in the future perhaps with Roda or Hanami.
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I created different jobs for weekly and daily disbursements for separation of concerns and also monitoring.
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There is a job for each merchant to create the disbursement as they can be processed in parallel this way.
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If I had more time I would add more tests, create more endpoints, more validations, add authentication, etc.
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I would also find a way to have a similar table to the one you showed on the challenge instructions, but decided to create the disbursements as simple as possible for the sake of time.
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There is some repetition, this is on purpose DRY not always is the best choice.
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Overall I chose to use the most vanilla Rails and Ruby possible for simplicity. I like to follow one of Jonh Ousterhoust's though: "It's more important for a module to have a simple interface than a simple implementation".
| Year | Number of disbursements | Amount disbursed to merchants | Amount of order fees |
|---|---|---|---|
| 2022 | 50 | 38.439.162,80€ | 347.314,83€ |
| 2023 | 50 | 187.054.780,85€ | 1.695.599,43€ |