Refactor network module

[MohShMehr]

What I have done and why

• Refactored the network module to use dependency injection (DI).
• Introduced separate interfaces for each entity API.
• No functional changes; behavior remains the same.

This refactor was inspired by using the NIA project as a base project. It improves maintainability and makes the codebase easier to extend when working with multiple API methods.

Testing

• Ran ./gradlew testDemoDebug locally; all tests passed.
• Applied formatting via ./gradlew --init-script gradle/init.gradle.kts spotlessApply.

Related issues

• N/A

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[MohShMehr]

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[MohShMehr]

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[dturner]

In the previous codebase, it was easy to see the backend API schema in a single file, whereas now it's split across 2 files. Since we have no plans to change/extend the backend API, I'm struggling to understand the benefit of this change.

[MohShMehr]

In the previous codebase, it was easy to see the backend API schema in a single file, whereas now it's split across 2 files. Since we have no plans to change/extend the backend API, I'm struggling to understand the benefit of this change.

Thanks for the thoughtful question!
Since Now in Android is often used as a base project, this refactor keeps the backend surface unchanged and focuses on making the client network layer more scalable and maintainable so it can be adopted as‑is.
Separation of concerns: Retrofit/OkHttp config lives in DI; the data source consumes typed TopicApi and NewsResourceApi.
Testability: Inject fakes for those APIs without bootstrapping Retrofit/OkHttp/Json.
Maintainability: One @singleton Retrofit centralizes timeouts/interceptors/base URL.
Clear ownership: Endpoints are grouped by resource, avoiding a single “god” interface.
I appreciate the convenience of a single-file view and can accommodate that while preserving these benefits. Would you prefer:
Co-locating both interfaces in one file (e.g., api/Apis.kt), or
Adding a short endpoint index in core/network/README.md?
Happy to update the PR based on your preference.