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Merged
merged 1 commit into from
Apr 29, 2021
Merged

Update UseCase #108

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15 changes: 8 additions & 7 deletions app/src/main/kotlin/com/fernandocejas/sample/core/interactor/UseCase.kt
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Expand Up @@ -17,10 +17,7 @@ package com.fernandocejas.sample.core.interactor

import com.fernandocejas.sample.core.exception.Failure
import com.fernandocejas.sample.core.functional.Either
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.GlobalScope
import kotlinx.coroutines.async
import kotlinx.coroutines.launch
import kotlinx.coroutines.*

/**
* Abstract class for a Use Case (Interactor in terms of Clean Architecture).
Expand All @@ -34,9 +31,13 @@ abstract class UseCase<out Type, in Params> where Type : Any {

abstract suspend fun run(params: Params): Either<Failure, Type>

operator fun invoke(params: Params, onResult: (Either<Failure, Type>) -> Unit = {}) {
val job = GlobalScope.async(Dispatchers.IO) { run(params) }
GlobalScope.launch(Dispatchers.Main) { onResult(job.await()) }
operator fun invoke(params: Params, scope: CoroutineScope = GlobalScope, onResult: (Either<Failure, Type>) -> Unit = {}) {
scope.launch(Dispatchers.Main) {
val deferred = async(Dispatchers.IO) {
run(params)
}
onResult(deferred.await())
}
}

class None
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10 changes: 8 additions & 2 deletions app/src/main/kotlin/com/fernandocejas/sample/features/movies/MovieDetailsViewModel.kt
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Expand Up @@ -17,6 +17,7 @@ package com.fernandocejas.sample.features.movies

import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.viewModelScope
import com.fernandocejas.sample.core.platform.BaseViewModel
import com.fernandocejas.sample.features.movies.GetMovieDetails.Params
import javax.inject.Inject
Expand All @@ -29,9 +30,14 @@ class MovieDetailsViewModel
val movieDetails: LiveData<MovieDetailsView> = _movieDetails

fun loadMovieDetails(movieId: Int) =
getMovieDetails(Params(movieId)) { it.fold(::handleFailure, ::handleMovieDetails) }
getMovieDetails(Params(movieId), viewModelScope) {
it.fold(
::handleFailure,
::handleMovieDetails
)
}

fun playMovie(url: String) = playMovie(PlayMovie.Params(url))
fun playMovie(url: String) = playMovie(PlayMovie.Params(url), viewModelScope)

private fun handleMovieDetails(movie: MovieDetails) {
_movieDetails.value = MovieDetailsView(movie.id, movie.title, movie.poster,
Expand Down
4 changes: 3 additions & 1 deletion app/src/main/kotlin/com/fernandocejas/sample/features/movies/MoviesViewModel.kt
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Expand Up @@ -17,6 +17,7 @@ package com.fernandocejas.sample.features.movies

import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.viewModelScope
import com.fernandocejas.sample.core.interactor.UseCase.None
import com.fernandocejas.sample.core.platform.BaseViewModel
import javax.inject.Inject
Expand All @@ -27,7 +28,8 @@ class MoviesViewModel
private val _movies: MutableLiveData<List<MovieView>> = MutableLiveData()
val movies: LiveData<List<MovieView>> = _movies

fun loadMovies() = getMovies(None()) { it.fold(::handleFailure, ::handleMovieList) }
fun loadMovies() =
getMovies(None(), viewModelScope) { it.fold(::handleFailure, ::handleMovieList) }

private fun handleMovieList(movies: List<Movie>) {
_movies.value = movies.map { MovieView(it.id, it.poster) }
Expand Down