/*
 * Copyright 2013-2021 the original author or authors.
 *
 * 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
 *
 *      https://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.springframework.cloud.sleuth.brave.bridge;

import java.util.Objects;

import org.springframework.cloud.sleuth.TraceContext;
import org.springframework.lang.Nullable;

/**
 * Brave implementation of a {@link TraceContext}.
 *
 * @author Marcin Grzejszczak
 * @since 3.0.0
 */
public class BraveTraceContext implements TraceContext {

	final brave.propagation.TraceContext traceContext;

	public BraveTraceContext(brave.propagation.TraceContext traceContext) {
		this.traceContext = traceContext;
	}

	@Override
	public String traceId() {
		return this.traceContext.traceIdString();
	}

	@Override
	@Nullable
	public String parentId() {
		return this.traceContext.parentIdString();
	}

	@Override
	public String spanId() {
		return this.traceContext.spanIdString();
	}

	@Override
	public Boolean sampled() {
		return this.traceContext.sampled();
	}

	@Override
	public String toString() {
		return this.traceContext != null ? this.traceContext.toString() : "null";
	}

	public static brave.propagation.TraceContext toBrave(TraceContext traceContext) {
		if (traceContext == null) {
			return null;
		}
		return ((BraveTraceContext) traceContext).traceContext;
	}

	public static TraceContext fromBrave(brave.propagation.TraceContext traceContext) {
		return new BraveTraceContext(traceContext);
	}

	@Override
	public boolean equals(Object o) {
		if (this == o) {
			return true;
		}
		if (o == null || getClass() != o.getClass()) {
			return false;
		}
		BraveTraceContext that = (BraveTraceContext) o;
		return Objects.equals(this.traceContext, that.traceContext);
	}

	@Override
	public int hashCode() {
		return Objects.hash(this.traceContext);
	}

}
