Ktor - REST API Development for Android

Create a Ktor rest api project using the cater project generator, configure Netty, dependencies, and json content negotiation, then set up routing and test a hello world root on localhost:8080.

Set up MongoDB for a Ktor REST API by defining user and node models, auto-generated ids, and collections, and implementing a data access object to access the database.

Learn how to register users in a ktor-based android REST API by building a user routing post /register, validating inputs, hashing passwords with salt, and storing in mongodb.

Implement login functionality by adding a post login route that accepts a user login request (email and password), checks the password for the email, and returns 200 or 401.

Implement basic authentication in a Ktor rest API for Android by configuring auth as an extension function and validating credentials against the database to return a user ID principal.

Create a user-authenticated notes endpoint in a Ktor REST API for Android, retrieving a user's notes by email and user ID via the nodes route.

Add and update notes in a Ktor rest api by implementing post and patch routes, modeling notes with title, text, timestamp, and owner by email, with ownership checks.

Implement a delete notes endpoint in a Ktor rest api, enforcing owner-only deletion by note ID and returning 403 if unauthorized or 200 if deleted.

Create a notes app by connecting an Android client to a back-end server, set up a new Kotlin Jetpack Compose project in Android Studio, and configure Dagger Hilt and Retrofit.

Create a clean mvvm architecture by organizing a notes app into data, domain, presentation, and utils packages, with remote and repository layers, dagger hilt, and domain use cases.

Set up retrofit by creating node request and response models, define login and register requests, build the notes API and node repository, and prep Dagger Hilt injection.

Implement dependency injection with dagger hilt, configure a notes API client with retrofit, include a basic auth interceptor, and secure credentials using encrypted shared preferences in an android app.

Implement jetpack compose navigation in the notes app using a nav controller and nav host, with routes for login, register, node, and add/edit node screens.

Implement the login screen using a login use case and view model, manage loading, error, and success states, store credentials with encrypted shared preferences, and navigate to the nodes screen.

Build a register flow in a Ktor android app by creating a register view model, wiring the register use case and repository, and handling 201 created.

Build the nodes screen and nodes view model with a get nodes use case and a notes list state. Implement logout in shared preferences and navigate to the login screen.

Implement adding and editing notes by wiring insert and update node use cases through a view model. Manage title and text states and navigate back after saving.

Implement a delete node use case and wire it into the view model to remove notes by id. Refresh the list and show the 'you don't have any notes' message.

Celebrate completing the Ktor rest api development for Android course and apply your dedication to building robust and efficient restful apis for Android backend applications.