/**
 * Copyright (c) 2013, Sana
 * All rights reserved.
 * <p>
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * <p>
 * * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * * Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 * * Neither the name of the Sana nor the
 * names of its contributors may be used to endorse or promote products
 * derived from this software without specific prior written permission.
 * <p>
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL Sana BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.sana.net.http;

import java.io.File;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.util.Map;

import org.apache.http.HttpRequest;
import org.apache.http.MethodNotSupportedException;
import org.apache.http.RequestLine;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.methods.HttpPut;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;

/**
 * @author Sana Development
 *
 */
public class HttpRequestBuilder {


    /* Basic implementation of a REquestFactory */
    private static RequestFactory FACTORY = new RequestFactory() {
        @Override
        public HttpUriRequest produceCreate(URI uri, Map<String, ?> formData,
                                            Map<String, URI> files) throws UnsupportedEncodingException {
            HttpPost request = new HttpPost(uri);
            MultipartEntity entity = new MultipartEntity();
            if (files != null) {
                for (String key : files.keySet()) {
                    URI value = files.get(key);
                    entity.addPart(key, new FileBody(new File(value)));
                }
            }
            if (formData != null) {
                for (String key : formData.keySet()) {
                    Object value = formData.get(key);
                    entity.addPart(key, new StringBody(String.valueOf(value)));
                }
            }
            request.setEntity(entity);
            return request;
        }

        @Override
        public HttpUriRequest produceRead(URI uri) {
            return new HttpGet(uri);
        }

        @Override
        public HttpUriRequest produceUpdate(URI uri, Map<String, ?> formData,
                                            Map<String, URI> files) throws UnsupportedEncodingException {
            HttpPut request = new HttpPut(uri);
            MultipartEntity entity = new MultipartEntity();
            if (files != null) {
                for (String key : files.keySet()) {
                    URI value = files.get(key);
                    entity.addPart(key, new FileBody(new File(value)));
                }
            }
            if (formData != null) {
                for (String key : formData.keySet()) {
                    Object value = formData.get(key);
                    entity.addPart(key, new StringBody(String.valueOf(value)));
                }
            }
            request.setEntity(entity);
            return request;
        }

        @Override
        public HttpUriRequest produceDelete(URI uri) {
            return new HttpDelete(uri);
        }
    };

    /**
     *
     */
    private HttpRequestBuilder() {
    }

    public static RequestFactory getDefaultBuilder() {
        return FACTORY;
    }

    /* (non-Javadoc)
     * @see org.apache.http.HttpRequestFactory#newHttpRequest(org.apache.http.RequestLine)
     */
    public HttpRequest newHttpRequest(RequestLine requestLine)
            throws MethodNotSupportedException {
        String method = requestLine.getMethod();
        String uri = requestLine.getUri();
        return newHttpRequest(method, uri);
    }

    /* (non-Javadoc)
     * @see org.apache.http.HttpRequestFactory#newHttpRequest(java.lang.String, java.lang.String)
     */
    public HttpRequest newHttpRequest(String method, String uri)
            throws MethodNotSupportedException {
        HttpUriRequest request = null;
        URI host = URI.create(uri);
        if (method.equals(HttpGet.METHOD_NAME)) {
            request = new HttpGet(host);
        } else if (method.equals(HttpPost.METHOD_NAME)) {
            request = new HttpPost(host);
        } else if (method.equals(HttpPut.METHOD_NAME)) {
            request = new HttpPut(host);
        } else if (method.equals(HttpPut.METHOD_NAME)) {
            request = new HttpDelete(host);
        }
        return request;
    }

}