The GraphQL API is created using the amazing Hot Chocolate GraphQL framework and is written in C# and makes use of .Net frameworks.

Database config should be done via an environment variable: i.e. : ConnectionStrings__DefaultConnection="Host=postgres;Username=order;Password=password;Database=order"

The We Do Takeaway service is created using an API first approach, this means that the API for the service is created first and the various apps and front-end clients come next and drive the API.

The API for We Do Takeaway takes the form of a GraphQL API. GraphQL has some advantages over REST, allow scalable development and reduced network requests.

The service is made up of one or more menus, giving a top level name and introduction to a menu the user can pick items from.

A menu has one or more sections, e.g. Desert. Sections group together items the user can pick from

A menu item is a thing you order from the menu.

A menu item has one or more ingredients that go into creating it

A basket is a container to keep a collection of items and the associated quantities the user wishes to purchase of each item.

The contents of a basket are turned into an order at checkout. From that point onwards the order is a central entity recording the items the customer has ordered and their status in the kitchen through to delivery progress

The order section is more complex and records and updates:

• Orders associated with a customer
• Order items and their qty
• Order fulfillment status for each order (new, awaiting payment, being cooked, ready for pickup, in transit, delivered, returned, lost)
• Payment details associated with an order
• Delivery instructions for order
• Allocated driver
• Allocated chef (maybe)
• Audit trail of order status changes and times