TASK1.md

Task 1: Create the "Greeting" Feature

Your task is to build a new Spring feature called greeting, and connect it to the existing todo feature.

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🎯 Objective

Create a REST endpoint /api/greeting that returns a message like: "Hello from Spring! You have 3 open tasks."

This feature should use the existing TodoService via constructor-based Dependency Injection.

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🛠 Steps

1. Create a new package:
   lv.ctco.springboottemplate.features.greeting

2. Implement GreetingService

• Inject TodoService using constructor-based DI
• Use todoService.getAllTodos() and count how many are not completed
• Return a string like: "Hello from Spring! You have X open tasks."

3. Create GreetingController

• Map it to /api/greeting
• Delegate to GreetingService

4. Follow naming conventions

• Class names must end with Service, Controller, etc.
• Use annotations like @Service, @RestController, @RequestMapping

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🧪 Test Yourself

We've prepared tests to verify your work:

✅ ArchUnit tests will prevent you from structure issues

✅ GreetingServiceIntegrationTest.java
📍 Location: src/test/java/lv/ctco/springboottemplate/features/greeting/
🔒 Also @Disabled. Remove to test your endpoint.

If All tests pass and the greeting appears at /api/greeting, you've completed the task!

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💡 Hints

• Constructor injection is preferred over @Autowired
• Use Java Streams to filter open todos
• The TodoService is already a Spring bean — you can inject it!

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✅ Done?

When both tests are green and the endpoint works, congratulations!
You've created a feature using Spring idioms and learned how features interact via Dependency Injection.

🔥 Welcome to the backend side.