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/*******************************************************************************
 *
 * MIT License
 *
 * Copyright (c) 2016 Tiago de Freitas Lima
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 *******************************************************************************/
package com.github.ljtfreitas.restify.http.contract.metadata;

import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.Optional;
import java.util.stream.Collectors;

public class EndpointHeaders {

	private final Collection headers;

	public EndpointHeaders() {
		this.headers = new LinkedHashSet<>();
	}

	public EndpointHeaders(Collection headers) {
		this.headers = new LinkedHashSet<>(headers);
	}

	public EndpointHeaders put(EndpointHeader endpointHeader) {
		EndpointHeaders headers = new EndpointHeaders(this.headers);
		headers.doPut(endpointHeader);
		return headers;
	}

	private void doPut(EndpointHeader endpointHeader) {
		headers.add(endpointHeader);
	}

	public Collection find(String name) {
		return headers.stream()
			.filter(h -> h.name().equalsIgnoreCase(name))
				.collect(Collectors.toSet());
	}

	public Optional first(String name) {
		return headers.stream()
				.filter(h -> h.name().equalsIgnoreCase(name))
					.findFirst();
	}

	public Collection all() {
		return Collections.unmodifiableCollection(headers);
	}

	@Override
	public String toString() {
		return headers.toString();
	}
}