EDIT

/**

* Copyright (C) 2018 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.taxeditor.view.webimport.termimport.requests;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URI;

import java.net.URISyntaxException;

import java.net.URL;

import java.util.List;

/**

 * @author pplitzner

 * @since Apr 23, 2018

 *

 */

public abstract class AbstractTerminologyServiceRequest {

    @SuppressWarnings("unused")

    private static final String TERM_SERVICE_DEV = "dev-gfbio.bgbm.org";

    private static final String TERM_SERVICE = "terminologies.gfbio.org";

    private static final int TIMEOUT = 10000;

    public String request() {

        try {

            String queryString = "format=json&";

            String pathString = "/api/terminologies/"

                    + (getTerminologyId()!=null?getTerminologyId()+"/":"")

                    + (getServiceUri()!=null?getServiceUri():"");

            List<RequestParameter> serviceParameters = getServiceParameters();

            if(serviceParameters!=null){

                StringBuilder params = new StringBuilder();

                serviceParameters.forEach(param->params.append(param.key+"="+param.value+"&"));

                queryString += params.toString();

            }

            URI uri = new URI("https", TERM_SERVICE, pathString, queryString, null);

            URL url = uri.toURL();

            HttpURLConnection conn = (HttpURLConnection) url.openConnection();

            conn.setRequestProperty("Accept", "application/json");

            conn.setConnectTimeout(TIMEOUT*9);

            conn.setReadTimeout(TIMEOUT*9);

            if (conn.getResponseCode() != 200) {

                throw new RuntimeException("Failed : HTTP error code : " + conn.getResponseCode());

            }

            BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));

            StringBuilder  builder = new StringBuilder();

            String line;

            while ((line = br.readLine()) != null) {

                builder.append(line);

            }

            conn.disconnect();

            return builder.toString();

        } catch (IOException e) {

            e.printStackTrace();

        } catch (URISyntaxException e) {

            e.printStackTrace();

        }

        return null;

    }

    protected abstract String getServiceUri();

    protected abstract String getTerminologyId();

    protected abstract List<RequestParameter> getServiceParameters();

    protected class RequestParameter{

        String key;

        String value;

        public RequestParameter(String key, String value) {

            super();

            this.key = key;

            this.value = value;

        }

        public String getKey() {

            return key;

        }

        public String getValue() {

            return value;

        }

    }

}