AbstractHttp.java

/*
 * GovWay - A customizable API Gateway 
 * https://govway.org
 * 
 * Copyright (c) 2005-2025 Link.it srl (https://link.it). 
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as published by
 * the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

package org.openspcoop2.utils.transport.http;

import java.io.InputStream;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

import org.openspcoop2.utils.transport.TransportUtils;

/**
 * AbstractHttp
 *
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public abstract class AbstractHttp {

    private String contentType;
    private byte[] content;
    private Map<String, List<String>> headers = new HashMap<>();
    private Map<String, String> params = new HashMap<>();
    
    public byte[] getContent() {
        return this.content;
    }
    public void setContent(byte[] content) {
        this.content = content;
    }
    
    private InputStream contentStream;
    public InputStream getContentStream() {
        return this.contentStream;
    }
    public void setContentStream(InputStream contentStream) {
        this.contentStream = contentStream;
    }
    
    public void addHeader(String key,String value){
        List<String> l = this.headers.remove(key);
        if(l==null) {
            l = new ArrayList<>();
        }
        l.add(value);
        this.headers.put(key, l);
    }
    public void addHeader(String key,List<String> values){
        List<String> l = this.headers.remove(key);
        if(l==null) {
            l = new ArrayList<>();
        }
        l.addAll(values);
        this.headers.put(key, l);
    }
    
    @Deprecated
    public Map<String, String> getHeaders() {
        return TransportUtils.convertToMapSingleValue(this.headers);
    }
    public Map<String, List<String>> getHeadersValues() {
        return this.headers;
    }
    
    @Deprecated
    public String getHeader(String header) {
        return TransportUtils.getObjectAsString(this.headers, header);
    }
    public String getHeader_compactMultipleValues(String name){
        return TransportUtils.getObjectAsString(this.headers, name);
    }
    public String getHeaderFirstValue(String name){
        List<String> l = getHeaderValues(name);
        if(l!=null && !l.isEmpty()) {
            return l.get(0);
        }
        return null;
    }
    public List<String> getHeaderValues(String header) {
        return TransportUtils.getRawObject(this.headers, header);
    }
    
    public String getContentType() {
        return this.contentType;
    }
    public void setContentType(String contentType) {
        this.contentType = contentType;
    }
    
    
    public Enumeration<String> getParamsName() {
        return Collections.enumeration(this.params.keySet());
    }
    
    public void removeParam(String key) {
        this.params.remove(key);
    }
    
    public String getParam(String key) {
        return this.params.get(key);
    }
    
    public void addParam(String key, String value) {
        this.params.put(key, value);
    }
    
    protected String getQueryString() {
        return this.params.entrySet()
                .stream()
                .map(e -> URLEncoder.encode(e.getKey(), StandardCharsets.UTF_8) + "=" + URLEncoder.encode(e.getValue(), StandardCharsets.UTF_8))
                .collect(Collectors.joining("&"));
    }
}