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package org.yuzu.yuzu_emu.model
import android.content.ContentProvider
import android.content.ContentValues
import android.database.Cursor
import android.database.sqlite.SQLiteDatabase
import android.net.Uri
import org.yuzu.yuzu_emu.BuildConfig
import org.yuzu.yuzu_emu.utils.Log
/**
* Provides an interface allowing Activities to interact with the SQLite database.
* CRUD methods in this class can be called by Activities using getContentResolver().
*/
class GameProvider : ContentProvider() {
private var mDbHelper: GameDatabase? = null
override fun onCreate(): Boolean {
Log.info("[GameProvider] Creating Content Provider...")
mDbHelper = GameDatabase(context!!)
return true
}
override fun query(
uri: Uri,
projection: Array<String>?,
selection: String?,
selectionArgs: Array<String>?,
sortOrder: String?
): Cursor? {
Log.info("[GameProvider] Querying URI: $uri")
val db = mDbHelper!!.readableDatabase
val table = uri.lastPathSegment
if (table == null) {
Log.error("[GameProvider] Badly formatted URI: $uri")
return null
}
val cursor = db.query(table, projection, selection, selectionArgs, null, null, sortOrder)
cursor.setNotificationUri(context!!.contentResolver, uri)
return cursor
}
override fun getType(uri: Uri): String? {
Log.verbose("[GameProvider] Getting MIME type for URI: $uri")
val lastSegment = uri.lastPathSegment
if (lastSegment == null) {
Log.error("[GameProvider] Badly formatted URI: $uri")
return null
}
if (lastSegment == GameDatabase.TABLE_NAME_FOLDERS) {
return MIME_TYPE_FOLDER
} else if (lastSegment == GameDatabase.TABLE_NAME_GAMES) {
return MIME_TYPE_GAME
}
Log.error("[GameProvider] Unknown MIME type for URI: $uri")
return null
}
override fun insert(uri: Uri, values: ContentValues?): Uri {
var realUri = uri
Log.info("[GameProvider] Inserting row at URI: $realUri")
val database = mDbHelper!!.writableDatabase
val table = realUri.lastPathSegment
if (table != null) {
if (table == RESET_LIBRARY) {
mDbHelper!!.resetDatabase(database)
return realUri
}
if (table == REFRESH_LIBRARY) {
Log.info(
"[GameProvider] URI specified table REFRESH_LIBRARY. No insertion necessary; refreshing library contents..."
)
mDbHelper!!.scanLibrary(database)
return realUri
}
val id =
database.insertWithOnConflict(table, null, values, SQLiteDatabase.CONFLICT_IGNORE)
// If insertion was successful...
if (id > 0) {
// If we just added a folder, add its contents to the game list.
if (table == GameDatabase.TABLE_NAME_FOLDERS) {
mDbHelper!!.scanLibrary(database)
}
// Notify the UI that its contents should be refreshed.
context!!.contentResolver.notifyChange(realUri, null)
realUri = Uri.withAppendedPath(realUri, id.toString())
} else {
Log.error("[GameProvider] Row already exists: $realUri id: $id")
}
} else {
Log.error("[GameProvider] Badly formatted URI: $realUri")
}
database.close()
return realUri
}
override fun delete(uri: Uri, selection: String?, selectionArgs: Array<String>?): Int {
Log.error("[GameProvider] Delete operations unsupported. URI: $uri")
return 0
}
override fun update(
uri: Uri, values: ContentValues?, selection: String?,
selectionArgs: Array<String>?
): Int {
Log.error("[GameProvider] Update operations unsupported. URI: $uri")
return 0
}
companion object {
const val REFRESH_LIBRARY = "refresh"
const val RESET_LIBRARY = "reset"
private const val AUTHORITY = "content://${BuildConfig.APPLICATION_ID}.provider"
@JvmField
val URI_FOLDER: Uri = Uri.parse("$AUTHORITY/${GameDatabase.TABLE_NAME_FOLDERS}/")
@JvmField
val URI_REFRESH: Uri = Uri.parse("$AUTHORITY/$REFRESH_LIBRARY/")
@JvmField
val URI_RESET: Uri = Uri.parse("$AUTHORITY/$RESET_LIBRARY/")
const val MIME_TYPE_FOLDER = "vnd.android.cursor.item/vnd.yuzu.folder"
const val MIME_TYPE_GAME = "vnd.android.cursor.item/vnd.yuzu.game"
}
}
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