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// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
package org.yuzu.yuzu_emu.utils
import android.content.SharedPreferences
import android.net.Uri
import androidx.preference.PreferenceManager
import kotlinx.serialization.decodeFromString
import kotlinx.serialization.encodeToString
import kotlinx.serialization.json.Json
import org.yuzu.yuzu_emu.NativeLibrary
import org.yuzu.yuzu_emu.YuzuApplication
import org.yuzu.yuzu_emu.model.Game
import java.util.*
object GameHelper {
const val KEY_GAME_PATH = "game_path"
const val KEY_GAMES = "Games"
private lateinit var preferences: SharedPreferences
fun getGames(): List<Game> {
val games = mutableListOf<Game>()
val context = YuzuApplication.appContext
val gamesDir =
PreferenceManager.getDefaultSharedPreferences(context).getString(KEY_GAME_PATH, "")
val gamesUri = Uri.parse(gamesDir)
preferences = PreferenceManager.getDefaultSharedPreferences(context)
// Ensure keys are loaded so that ROM metadata can be decrypted.
NativeLibrary.reloadKeys()
val children = FileUtil.listFiles(context, gamesUri)
for (file in children) {
if (!file.isDirectory) {
val filename = file.uri.toString()
val extensionStart = filename.lastIndexOf('.')
if (extensionStart > 0) {
val fileExtension = filename.substring(extensionStart)
// Check that the file has an extension we care about before trying to read out of it.
if (Game.extensions.contains(fileExtension.lowercase(Locale.getDefault()))) {
games.add(getGame(filename))
}
}
}
}
// Cache list of games found on disk
val serializedGames = mutableSetOf<String>()
games.forEach {
serializedGames.add(Json.encodeToString(it))
}
preferences.edit()
.remove(KEY_GAMES)
.putStringSet(KEY_GAMES, serializedGames)
.apply()
return games.toList()
}
private fun getGame(filePath: String): Game {
var name = NativeLibrary.getTitle(filePath)
// If the game's title field is empty, use the filename.
if (name.isEmpty()) {
name = filePath.substring(filePath.lastIndexOf("/") + 1)
}
var gameId = NativeLibrary.getGameId(filePath)
// If the game's ID field is empty, use the filename without extension.
if (gameId.isEmpty()) {
gameId = filePath.substring(
filePath.lastIndexOf("/") + 1,
filePath.lastIndexOf(".")
)
}
val newGame = Game(
name,
NativeLibrary.getDescription(filePath).replace("\n", " "),
NativeLibrary.getRegions(filePath),
filePath,
gameId,
NativeLibrary.getCompany(filePath)
)
val addedTime = preferences.getLong(newGame.keyAddedToLibraryTime, 0L)
if (addedTime == 0L) {
preferences.edit()
.putLong(newGame.keyAddedToLibraryTime, System.currentTimeMillis())
.apply()
}
return newGame
}
}
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