Simple cashier function that adds products to a cart and displays the total price.
The following products are registered:
| Product Code | Name | Price |
|---|---|---|
| GR1 | Green Tea | £3.11 |
| SR1 | Strawberries | £5.00 |
| CF1 | Coffee | £11.23 |
Special Rules
- Buy one get one free
- Buy > N products, pay X price per product
- Buy > N products, pay X% of the original price
The project doesn't connect to a database, it reads both the products and rules from a YAML file.
The default location of the file is priv/assets/products.yml and priv/assets/rules.yml, this can be changed in the Configuration.
Currently there are only 3 types of configurable discount rules:
- FreeRule (buy X get 1 free)
- ReducedPriceRule (buy more than X pay a different price)
- FractionPriceRule (buy more than X, pay a percentage of the original price)
- Elixir 1.12.3
- Erlang OTP 24
- Run tests with
mix tests - Run the formatter with
mix format - Run Credo
mix credo --strict
Note: There is a Github Action configured running all the above on every PR or push to master
To create a release simply run
mix release
Additonally a Docker image is available for production
docker build . -t cashier-ex:latest
docker run -d --rm -it --name cashier-ex cashier-ex:latest
- Add an TCP interface
- Spawn more than 1 repo and use consistent hashing to route calls