Building a vending machine in Kotlin because ... why not? 🙂
- Make sure you have azul-13-sdk installed for Kotlin.
- Go to Main.kt and run the
fun main()function.
The vending machine works with a list of coins and can also return change. 🧙
For now, this basic implementation supports the following types of drinks:
- Americano, Café Au Lait, Cappuccino, Cortado, Decaf, Espresso, Flat White, Iced Coffee, Irish Coffee, Latte, Macchiato, Mocha, Tea, Water
The vending machine uses State Pattern and has several states - Idle, Running, Paused
and Stopped and the transition goes as follows:
+------------+ start() +------------+
| Idle | ---------------> | Running |
+------------+ +------------+
|
|
|
| pause()
|
|
v
+------------+ +------------+
| Stopped | <--------------- | Paused |
+------------+ stop() +------------+
The choice of a drink and container is based on
the Factory Pattern. All the
drinks and containers implement the abstract sealed classes Drink and Container respectively,
and inherit them. With the help of sealed classes
in Kotlin, we can avoid the use of pattern matching/switch/if...else statements and can autoload
new implementations.
For now, there are a few containers - water, beans, tea, milk, and sugar. When a certain container is chosen, the amount in the container decreases. If the container is empty, an exception is thrown to notify the user.
The work is being done directly on the main branch. It's a hobby project, so nothing sophisticated
is planned (for now). 😉 In the Git messages you can find the following emojis, meaning:
| Emoji | Action |
|---|---|
| 🔨 | refactoring |
| ✨ | feature |
| 🐛 | bug fixed |
| 📚 | update README.md |
| ✅ | update tests |
| 🚀 | update building scripts |
When a new commit is pushed, a GitHub Actions pipeline is triggered. This is acquired by the build.yml and tests.yml files. Example:
