package eu.kanade.presentation.browse

import androidx.compose.foundation.layout.PaddingValues
import androidx.compose.foundation.layout.WindowInsets
import androidx.compose.foundation.layout.asPaddingValues
import androidx.compose.foundation.layout.navigationBars
import androidx.compose.foundation.lazy.items
import androidx.compose.runtime.Composable
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.ui.Modifier
import androidx.compose.ui.platform.LocalContext
import eu.kanade.domain.manga.model.Manga
import eu.kanade.presentation.components.AppBar
import eu.kanade.presentation.components.EmptyScreen
import eu.kanade.presentation.components.LoadingScreen
import eu.kanade.presentation.components.Scaffold
import eu.kanade.presentation.components.ScrollbarLazyColumn
import eu.kanade.presentation.manga.components.BaseMangaListItem
import eu.kanade.presentation.util.plus
import eu.kanade.tachiyomi.R
import eu.kanade.tachiyomi.ui.browse.migration.manga.MigrateMangaPresenter
import eu.kanade.tachiyomi.ui.browse.migration.manga.MigrateMangaPresenter.Event
import eu.kanade.tachiyomi.util.system.toast
import kotlinx.coroutines.flow.collectLatest

@Composable
fun MigrateMangaScreen(
    navigateUp: () -> Unit,
    title: String?,
    presenter: MigrateMangaPresenter,
    onClickItem: (Manga) -> Unit,
    onClickCover: (Manga) -> Unit,
) {
    val context = LocalContext.current
    Scaffold(
        topBar = { scrollBehavior ->
            AppBar(
                title = title,
                navigateUp = navigateUp,
                scrollBehavior = scrollBehavior,
            )
        },
    ) { paddingValues ->
        when {
            presenter.isLoading -> LoadingScreen()
            presenter.isEmpty -> EmptyScreen(textResource = R.string.empty_screen)
            else -> {
                MigrateMangaContent(
                    paddingValues = paddingValues,
                    state = presenter,
                    onClickItem = onClickItem,
                    onClickCover = onClickCover,
                )
            }
        }
    }
    LaunchedEffect(Unit) {
        presenter.events.collectLatest { event ->
            when (event) {
                Event.FailedFetchingFavorites -> {
                    context.toast(R.string.internal_error)
                }
            }
        }
    }
}

@Composable
fun MigrateMangaContent(
    paddingValues: PaddingValues,
    state: MigrateMangaState,
    onClickItem: (Manga) -> Unit,
    onClickCover: (Manga) -> Unit,
) {
    ScrollbarLazyColumn(
        contentPadding = paddingValues + WindowInsets.navigationBars.asPaddingValues(),
    ) {
        items(state.items) { manga ->
            MigrateMangaItem(
                manga = manga,
                onClickItem = onClickItem,
                onClickCover = onClickCover,
            )
        }
    }
}

@Composable
fun MigrateMangaItem(
    modifier: Modifier = Modifier,
    manga: Manga,
    onClickItem: (Manga) -> Unit,
    onClickCover: (Manga) -> Unit,
) {
    BaseMangaListItem(
        modifier = modifier,
        manga = manga,
        onClickItem = { onClickItem(manga) },
        onClickCover = { onClickCover(manga) },
    )
}