/*
 * Copyright (c) 2021 The Matrix.org Foundation C.I.C.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.matrix.android.sdk.internal.util.file

import timber.log.Timber
import java.io.File

internal class AtomicFileCreator(private val file: File) {
    val partFile = File(file.parentFile, "${file.name}.part")

    init {
        if (file.exists()) {
            Timber.w("## AtomicFileCreator: target file ${file.path} exists, it should not happen.")
        }
        if (partFile.exists()) {
            Timber.d("## AtomicFileCreator: discard aborted part file ${partFile.path}")
            // No need to delete the file, we will overwrite it
        }
    }

    fun cancel() {
        partFile.delete()
    }

    fun commit() {
        partFile.renameTo(file)
    }
}
