/*
 * ====================================================================
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

package ch.boye.httpclientandroidlib.protocol;

import java.io.IOException;

import ch.boye.httpclientandroidlib.HttpException;
import ch.boye.httpclientandroidlib.HttpRequest;
import ch.boye.httpclientandroidlib.HttpRequestInterceptor;
import ch.boye.httpclientandroidlib.HttpResponse;
import ch.boye.httpclientandroidlib.HttpResponseInterceptor;
import ch.boye.httpclientandroidlib.annotation.ThreadSafe;

/**
 * Immutable {@link HttpProcessor}.
 *
 * @since 4.1
 */
@ThreadSafe // provided injected dependencies are immutable
public final class ImmutableHttpProcessor implements HttpProcessor {

    private final HttpRequestInterceptor[] requestInterceptors;
    private final HttpResponseInterceptor[] responseInterceptors;

    public ImmutableHttpProcessor(
            final HttpRequestInterceptor[] requestInterceptors,
            final HttpResponseInterceptor[] responseInterceptors) {
        super();
        if (requestInterceptors != null) {
            int count = requestInterceptors.length;
            this.requestInterceptors = new HttpRequestInterceptor[count];
            for (int i = 0; i < count; i++) {
                this.requestInterceptors[i] = requestInterceptors[i];
            }
        } else {
            this.requestInterceptors = new HttpRequestInterceptor[0];
        }
        if (responseInterceptors != null) {
            int count = responseInterceptors.length;
            this.responseInterceptors = new HttpResponseInterceptor[count];
            for (int i = 0; i < count; i++) {
                this.responseInterceptors[i] = responseInterceptors[i];
            }
        } else {
            this.responseInterceptors = new HttpResponseInterceptor[0];
        }
    }

    public ImmutableHttpProcessor(
            final HttpRequestInterceptorList requestInterceptors,
            final HttpResponseInterceptorList responseInterceptors) {
        super();
        if (requestInterceptors != null) {
            int count = requestInterceptors.getRequestInterceptorCount();
            this.requestInterceptors = new HttpRequestInterceptor[count];
            for (int i = 0; i < count; i++) {
                this.requestInterceptors[i] = requestInterceptors.getRequestInterceptor(i);
            }
        } else {
            this.requestInterceptors = new HttpRequestInterceptor[0];
        }
        if (responseInterceptors != null) {
            int count = responseInterceptors.getResponseInterceptorCount();
            this.responseInterceptors = new HttpResponseInterceptor[count];
            for (int i = 0; i < count; i++) {
                this.responseInterceptors[i] = responseInterceptors.getResponseInterceptor(i);
            }
        } else {
            this.responseInterceptors = new HttpResponseInterceptor[0];
        }
    }

    public ImmutableHttpProcessor(final HttpRequestInterceptor[] requestInterceptors) {
        this(requestInterceptors, null);
    }

    public ImmutableHttpProcessor(final HttpResponseInterceptor[] responseInterceptors) {
        this(null, responseInterceptors);
    }

    public void process(
            final HttpRequest request,
            final HttpContext context) throws IOException, HttpException {
        for (int i = 0; i < this.requestInterceptors.length; i++) {
            this.requestInterceptors[i].process(request, context);
        }
    }

    public void process(
            final HttpResponse response,
            final HttpContext context) throws IOException, HttpException {
        for (int i = 0; i < this.responseInterceptors.length; i++) {
            this.responseInterceptors[i].process(response, context);
        }
    }

}
