Kotlin Multiplatform Mobile (KMM) PokerPlanning client app using web sockets through ktor

Show cases

Android app	iOS Application
YouTube recording :cinema: KMM demo Android	YouTube recording :cinema: KMM demo iOS

What's included in this proof of concept

This POC shows usage of the following kotlin multiplatform libraries:

• ktor-client-core for doing classic HTTP communications
• ktor-client-websockets for web socket full duplex communications support
• kotlinx-coroutines-core for asynchronous method and multi-threading
• kotlinx-serialization-json allows objects annotations to support JSON serialization
• kotlinx-datetime to handle ISO-8601 datetime format

shared module includes

• classic KMM ExampleService to show expect / actual platform implementations (Android, iOS)
• the ExampleService also includes a classic HTTP communication through ktor
• poker planning business models (enum, interfaces, classes)
• PokerPlanningService business logic implementation
• WebSocketService as a ktor wrapper to handle web socket messaging exchange

androidApp module includes

• MainViewModel.kt example showing two ways binding (between the UI and the shared module)
• androidx.compose usage example (for the two way binding mechanism)
• MutableSharedFlow is used to model web socket incoming message as they are received by the WebSocketService
• Flow is used to model HTTP call result received by ExampleService

iosApp module includes

• ContentView.swift example showing two ways binding (between the UI and the shared module)