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/**
 * Copyright © 2010-2011 Nokia
 *
 * 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 com.github.restdriver.serverdriver.http.response;

import java.util.List;

import org.w3c.dom.Element;

import com.fasterxml.jackson.databind.JsonNode;
import com.github.restdriver.serverdriver.http.Header;

/**
 * Encapsulates a response from an HTTP server.
 */
public interface Response {
    
    /**
     * The maximum number of response body characters to display.
     */
    int MAX_BODY_DISPLAY_LENGTH = 1024;
    
    /**
     * What was the response code?
     * 
     * @return the HTTP status code of the response
     */
    int getStatusCode();
    
    /**
     * What was the content of the response?
     * 
     * @return The response body content as a string
     */
    String getContent();
    
    /**
     * What was the content of the response?
     * 
     * @return The response body content as a string
     */
    String asText();
    
    /**
     * The body of the response as a byte array, for dealing with binary data or
     * troubleshooting encoding issues.
     * 
     * @return The body of the HTTP response as a byte array
     */
    byte[] asBytes();
    
    /**
     * What headers did the server send?
     * 
     * @return A list of headers
     */
    List getHeaders();
    
    /**
     * Get the all headers with the specified name.
     * 
     * @param headerName The name of the header
     * @return The Headers associated with that name. Possibly an empty list.
     */
    List getHeaders(String headerName);
    
    /**
     * Get the value of an individual Header. If there are multiple values for the same header, this
     * method will return the first one found. If you expect there to be multiple values for the same header
     * then you should use {@link #getHeaders(String)}.
     * 
     * @param headerName The name of the header
     * @return The Header associated with that name. Possibly null.
     */
    Header getHeader(String headerName);
    
    /**
     * How long did the response take?
     * 
     * @return Round-trip response time in milliseconds
     */
    long getResponseTime();
    
    /**
     * Returns the JSON response content as a JsonNode, or throws RuntimeMappingException.
     * 
     * @return The JsonNode
     */
    JsonNode asJson();
    
    /**
     * Returns the XML response content as an org.w3c.Element, or throws RuntimeMappingException.
     * 
     * @return The Element
     */
    Element asXml();
    
    /**
     * Returns the response as a compact single-line String.
     * 
     * @return The String
     */
    String toCompactString();
    
    /**
     * Returns the response headers and body, truncating the body.
     * 
     * @return The String
     */
    String toString();
    
    /**
     * Returns the response headers and body, without truncating the body.
     * 
     * @return The String
     */
    String toBigString();
    
    /**
     * Prints the output of {@link #toCompactString()} to System.out.
     */
    void tinyDump();
    
    /**
     * Prints the output of {@link #toString()} to System.out.
     */
    void dump();
    
    /**
     * Prints the output of {@link #toString()} to System.out, but without truncating the response body. This could be a very large dump.
     */
    void bigDump();
    
}