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refactor(library/flow): Don't unnecessarily map categories if library is not grouped

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Ahmad Ansori Palembani 2024-06-20 09:14:01 +07:00
parent 5799842c50
commit 8cfe5a1182
Signed by: null2264
GPG key ID: BA64F8B60AF3EFB6
1 changed files with 33 additions and 19 deletions
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52
app/src/main/java/eu/kanade/tachiyomi/ui/library/LibraryPresenter.kt
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@ -50,6 +50,7 @@ import eu.kanade.tachiyomi.util.system.withIOContext
import eu.kanade.tachiyomi.util.system.withUIContext
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.flow.Flow
import kotlinx.coroutines.flow.collectLatest
import kotlinx.coroutines.flow.combine
import kotlinx.coroutines.launch
import kotlinx.coroutines.runBlocking
@ -94,7 +95,7 @@ class LibraryPresenter(
private val updateChapter: UpdateChapters by injectLazy()
private val updateManga: UpdateManga by injectLazy()
//private var libraryManga: List<LibraryManga> = emptyList()
private var loadedManga: LibraryMap = mapOf()
private val context = preferences.context
private val viewContext
@ -715,11 +716,19 @@ class LibraryPresenter(
}
*/
/**
* Library's flow.
*
* If category id '-1' is not empty, it means the library not grouped by categories
*/
private fun getLibraryFlow(): Flow<LibraryMap> {
return combine(
getCategories.subscribe(),
getLibraryManga.subscribe(),
) { categories, libraryMangaList ->
preferences.groupLibraryBy().changes(),
) { categories, libraryMangaList, groupType ->
this.groupType = groupType
val categoryAll = Category.createAll(
context,
preferences.librarySortingMode().get(),
@ -727,30 +736,35 @@ class LibraryPresenter(
)
val catItemAll = LibraryHeaderItem({ categoryAll }, -1)
val categorySet = mutableSetOf<Int>()
val headerItems = (
categories.mapNotNull { category ->
val id = category.id
if (id == null) {
null
} else {
id to LibraryHeaderItem({ getCategory(id) }, id)
}
} + (-1 to catItemAll) + (0 to LibraryHeaderItem({ getCategory(0) }, 0))
val headerItems = if (libraryIsGrouped)
(
categories.mapNotNull { category ->
val id = category.id
if (id == null) {
null
} else {
id to LibraryHeaderItem({ getCategory(id) }, id)
}
} + (-1 to catItemAll) + (0 to LibraryHeaderItem({ getCategory(0) }, 0))
).toMap()
else null
val libraryManga = libraryMangaList.mapNotNull {
val headerItem = (
if (!libraryIsGrouped) {
catItemAll
} else {
headerItems[it.category]
}
) ?: return@mapNotNull null
// header item is used to identify which category the library manga is actually belong to.
// because J2K have "fake tabbed" option and "show all" option.
val headerItem = if (headerItems == null) { catItemAll } else { headerItems[it.category] }
?: return@mapNotNull null
categorySet.add(it.category)
LibraryItem(it, headerItem, viewContext)
}
categories.associateWith { libraryManga.filter { item -> item.header.category.id == it.id }.orEmpty() }
categories.associateWith { libraryManga.filter { item -> item.header.category.id == it.id } }
}
}
private suspend fun subscribeLibrary() {
getLibraryFlow().collectLatest { library ->
loadedManga = library
}
}