<aside> 📌 The goal of this workshop: to tease out various approaches to dealing with context and side effects, so that you can pick the right approach every time!

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Subject

We sell insurance! We’re a broker and we sit between the customer and the insurer. The insurer has been so kind as to provide an engine to us that we can call for rates. This allows us to sell quickly - so quickly in fact, that we can do it online.

Here’s some things to know:

• When a customer takes out insurance with us, we call that a policy
• The policy lasts for a year, which we call a term
• A policy may be renewed for a new term

It happens sometimes that a customer’s situation has changed significantly during the ongoing term. When that happens, we can do an adjustment for them. Adjustments follow the same process as new policies. And that process is:

• Get their desired coverage
• Rate their selected coverage
• Collect payment

We are going to build some parts of this system today!

The workshop

We’re going to implement some features in an empty project in our favorite environment. I will be using PHP but it will be easy to follow for all. Any OO language will be very similar, FP might differ slightly, but we’ll navigate together!

Our work will integrate with external components

• Rating engine Where we get our pricing info from
• Credit payment provider Where we offer customers monthly payments
• Card payment provider Where we offer customers one-off payments
• Incident notification system In case we need to inform a human