001/*
002 * SPDX-License-Identifier: Apache-2.0
003 *
004 * Copyright 2023-2026 The Enola <https://enola.dev> Authors
005 *
006 * Licensed under the Apache License, Version 2.0 (the "License");
007 * you may not use this file except in compliance with the License.
008 * You may obtain a copy of the License at
009 *
010 *     https://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package dev.enola.common.io.resource;
019
020import static dev.enola.common.io.resource.SPI.missingCharsetExceptionSupplier;
021
022import com.google.common.io.ByteSink;
023import com.google.common.io.CharSink;
024
025public interface WritableResource extends AbstractResource {
026
027    ByteSink byteSink();
028
029    // TODO Consider replacing or integrating this with Converter?!
030    default CharSink charSink() {
031        // Workaround for java.lang.NoSuchMethodError: 'java.util.Optional
032        // com.google.common.base.Optional.toJavaUtil()' due to classpath hell :(
033        var charset = java.util.Optional.ofNullable(mediaType().charset().orNull());
034        return byteSink().asCharSink(charset.orElseThrow(missingCharsetExceptionSupplier(this)));
035    }
036}