MoviesViewModel.kt

package com.khoshnaw.viewmodel.movies

import com.khoshnaw.entity.Movie
import com.khoshnaw.usecase.movie.loadMovieList.LoadMovieListInputPort
import com.khoshnaw.usecase.movie.loadMovieList.LoadMovieListOutputPort
import com.khoshnaw.viewmodel.mapper.toUIDTO
import com.khoshnaw.viewmodel.standard.StandardViewModel
import dagger.hilt.android.lifecycle.HiltViewModel
import kotlinx.coroutines.flow.Flow
import javax.inject.Inject

@HiltViewModel
class MoviesViewModel @Inject constructor(
    private val movieInputPort: LoadMovieListInputPort
) : StandardViewModel<MoviesState, MoviesIntent>(),
    LoadMovieListOutputPort {

    override suspend fun handleIntent(intent: MoviesIntent) = when (intent) {
        is MoviesIntent.RefreshMovies -> handleRefreshMovies()
        is MoviesIntent.OnMovieClicked -> handleMovieClicked(intent)
    }

    private suspend fun handleRefreshMovies() {
        movieInputPort.startUpdatingMovieList()
    }

    private fun handleMovieClicked(intent: MoviesIntent.OnMovieClicked) {
        state.value?.movies?.getOrNull(intent.position)?.takeIf { it.id == intent.id }?.let {
            println("showing movie : $it")
        }
    }

    override suspend fun startObserveMovies(flow: Flow<List<Movie>>) {
        flow.collectResult {
            updateState(MoviesState.MovieList(it.toUIDTO()))
        }
    }

    override suspend fun showLoading(loading: Boolean) {
        state.value?.movies?.let { movies ->
            updateState(MoviesState.MovieList(movies, loading))
        }
    }
}