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/*
 * Copyright (c) 2022 nosqlbench
 *
 * 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 io.nosqlbench.virtdata.library.basics.shared.unary_string;

import io.nosqlbench.virtdata.api.annotations.Categories;
import io.nosqlbench.virtdata.api.annotations.Category;
import io.nosqlbench.virtdata.api.annotations.Example;
import io.nosqlbench.virtdata.api.annotations.ThreadSafeMapper;

import java.net.URLDecoder;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.function.Function;

/**
 * URLDecode string data
 */
@ThreadSafeMapper
@Categories({Category.conversion})
public class URLDecode implements Function {

    private final Charset charset;

    /**
     * URLDecode any incoming string using the specified charset.
     *
     * @param charset A valid character set name from {@link Charset}
     */
    @Example({"URLDecode('UTF-16')", "URLDecode using the UTF-16 charset."})
    public URLDecode(String charset) {
        this.charset = Charset.forName(charset);
    }

    @Example({"URLDecode()", "URLDecode using the default UTF-8 charset."})
    public URLDecode() {
        this.charset = StandardCharsets.UTF_8;
    }

    @Override
    public String apply(String s) {
        return URLDecoder.decode(s, charset);
    }
}