/*
 * Copyright (c) 2013-2024 Hutool Team.
 *
 * 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.dromara.hutool.core.io.resource;

import org.dromara.hutool.core.io.IORuntimeException;
import org.dromara.hutool.core.io.IoUtil;
import org.dromara.hutool.core.text.StrUtil;
import org.dromara.hutool.core.util.ByteUtil;
import org.dromara.hutool.core.util.CharsetUtil;

import java.io.*;
import java.net.URL;
import java.nio.charset.Charset;

/**
 * {@link CharSequence}资源，字符串做为资源
 *
 * @author looly
 * @since 5.5.2
 */
public class CharSequenceResource implements Resource, Serializable {
	private static final long serialVersionUID = 1L;

	private final CharSequence data;
	private final CharSequence name;
	private final Charset charset;

	/**
	 * 构造，使用UTF8编码
	 *
	 * @param data 资源数据
	 */
	public CharSequenceResource(final CharSequence data) {
		this(data, null);
	}

	/**
	 * 构造，使用UTF8编码
	 *
	 * @param data 资源数据
	 * @param name 资源名称
	 */
	public CharSequenceResource(final CharSequence data, final String name) {
		this(data, name, CharsetUtil.UTF_8);
	}

	/**
	 * 构造
	 *
	 * @param data 资源数据
	 * @param name 资源名称
	 * @param charset 编码
	 */
	public CharSequenceResource(final CharSequence data, final CharSequence name, final Charset charset) {
		this.data = data;
		this.name = name;
		this.charset = charset;
	}

	@Override
	public String getName() {
		return StrUtil.toStringOrNull(this.name);
	}

	@Override
	public URL getUrl() {
		return null;
	}

	@Override
	public long size() {
		return data.length();
	}

	@Override
	public InputStream getStream() {
		return new ByteArrayInputStream(readBytes());
	}

	@Override
	public BufferedReader getReader(final Charset charset) {
		return IoUtil.toBuffered(new StringReader(this.data.toString()));
	}

	@Override
	public String readStr(final Charset charset) throws IORuntimeException {
		return this.data.toString();
	}

	@Override
	public byte[] readBytes() throws IORuntimeException {
		return ByteUtil.toBytes(this.data, this.charset);
	}

}
