This is a a simple Android app to display products and prices from the Octopus Energy API

It uses the following public endpoints

• https://api.octopus.energy/v1/products
• https://api.octopus.energy/v1/products/{code}
• https://api.octopus.energy/v1/industry/grid-supply-points

The following functionality is provided

• View a list of energy products
• View details of the product including prices (if available and limited to grid supply point group A / electricity)
• View if a product is green
• Check a Grid Supply Point group based on a post code

Built using:

• Koin (Dependency Injection)
• MVVM / View Models
• Data binding
• Live Data
• Coroutines
• Retrofit2 (API HTTP calls)
• Moshi (JSON serialisation)
• Navigation (Architecture Component)
• Swipe Refresh layout and progress indicators
• Unit testing with JUnit, Mockk, Live-data helpers
• Android (UI) tests using Espresso (TODO: Setup MockWebServer or WireMock as currently using prod data)

Possible future improvements / ToDos

• Improve UI styling
• Allow filtering by green energy / business only etc.
• Add further tariff mapping for gas etc.
• Add further tariff mapping for different grid supply point groups
• In memory mock http server for UI Tests
• Add further error handling
• Add caching layer to repository
• Add settings
• Use partner endpoints on Octopus Energy API given API key (e.g. show consumption for a meter)

Screenshots

When loading product details page