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// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
package org.yuzu.yuzu_emu.model
import android.net.Uri
import androidx.documentfile.provider.DocumentFile
import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import androidx.lifecycle.ViewModel
import androidx.lifecycle.viewModelScope
import androidx.preference.PreferenceManager
import java.util.Locale
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.launch
import kotlinx.coroutines.withContext
import kotlinx.serialization.ExperimentalSerializationApi
import kotlinx.serialization.MissingFieldException
import kotlinx.serialization.decodeFromString
import kotlinx.serialization.json.Json
import org.yuzu.yuzu_emu.NativeLibrary
import org.yuzu.yuzu_emu.YuzuApplication
import org.yuzu.yuzu_emu.utils.GameHelper
@OptIn(ExperimentalSerializationApi::class)
class GamesViewModel : ViewModel() {
private val _games = MutableLiveData<List<Game>>(emptyList())
val games: LiveData<List<Game>> get() = _games
private val _searchedGames = MutableLiveData<List<Game>>(emptyList())
val searchedGames: LiveData<List<Game>> get() = _searchedGames
private val _isReloading = MutableLiveData(false)
val isReloading: LiveData<Boolean> get() = _isReloading
private val _shouldSwapData = MutableLiveData(false)
val shouldSwapData: LiveData<Boolean> get() = _shouldSwapData
private val _shouldScrollToTop = MutableLiveData(false)
val shouldScrollToTop: LiveData<Boolean> get() = _shouldScrollToTop
private val _searchFocused = MutableLiveData(false)
val searchFocused: LiveData<Boolean> get() = _searchFocused
init {
// Ensure keys are loaded so that ROM metadata can be decrypted.
NativeLibrary.reloadKeys()
// Retrieve list of cached games
val storedGames = PreferenceManager.getDefaultSharedPreferences(YuzuApplication.appContext)
.getStringSet(GameHelper.KEY_GAMES, emptySet())
if (storedGames!!.isNotEmpty()) {
val deserializedGames = mutableSetOf<Game>()
storedGames.forEach {
val game: Game
try {
game = Json.decodeFromString(it)
} catch (e: MissingFieldException) {
return@forEach
}
val gameExists =
DocumentFile.fromSingleUri(YuzuApplication.appContext, Uri.parse(game.path))
?.exists()
if (gameExists == true) {
deserializedGames.add(game)
}
}
setGames(deserializedGames.toList())
}
reloadGames(false)
}
fun setGames(games: List<Game>) {
val sortedList = games.sortedWith(
compareBy(
{ it.title.lowercase(Locale.getDefault()) },
{ it.path }
)
)
_games.postValue(sortedList)
}
fun setSearchedGames(games: List<Game>) {
_searchedGames.postValue(games)
}
fun setShouldSwapData(shouldSwap: Boolean) {
_shouldSwapData.postValue(shouldSwap)
}
fun setShouldScrollToTop(shouldScroll: Boolean) {
_shouldScrollToTop.postValue(shouldScroll)
}
fun setSearchFocused(searchFocused: Boolean) {
_searchFocused.postValue(searchFocused)
}
fun reloadGames(directoryChanged: Boolean) {
if (isReloading.value == true) {
return
}
_isReloading.postValue(true)
viewModelScope.launch {
withContext(Dispatchers.IO) {
NativeLibrary.resetRomMetadata()
setGames(GameHelper.getGames())
_isReloading.postValue(false)
if (directoryChanged) {
setShouldSwapData(true)
}
}
}
}
}
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