Development Wiki

This page documents how DocDelivery was developed.

The entire application is made using Kotlin, we have used Jetpack Compose to develop the UI and there are no layout XML files
We have followed a mix of Clean Architecture and MVVM to develop the application. The whole codebase can be seen divided into features and each feature is then divided into data, domain and presentation
The main focus of the application was to extract relevant information from the mails, hence we used Gmail API, to fetch the emails of the user.
We have used the Navigation Component, to navigate between different screen in the app, and also to implement the BottomNavigation Bar.
We have used the Accompanist library by Google to achieve the UI of the login screen.
To preserve some useful information of the User, like name, email, profile photo URL, etc and to preserve the login state of the application, we have used Shared Preferences.
We have also used Lottie to add animations in the application.
To fetch the emails asynchronously, and to handle all the situations related to concurrency and parallelism in the app, we have used Coroutines.
The Dependency Injection framework which we have used is Hilt
To cache the information that is shown to the user, we have leveraged Room
We have also used Flows a lot in our application.

We have used Github Actions, for CI, and to run some basics checks on every PR
We have used KtLint, for linting and formatting our code.
We use a gitPreCommitHook, to run the basic linting checks to avoid mistakes as much as possible.