de.knufficast.search.GPodderSearch.java Source code

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Here is the source code for de.knufficast.search.GPodderSearch.java

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/*******************************************************************************
 * Copyright 2012 Crazywater
 * 
 * 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 de.knufficast.search;

import java.io.IOException;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.client.methods.HttpGet;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import de.knufficast.util.BooleanCallback;
import de.knufficast.util.HttpUtil;

/**
 * Searches GPodder for podcasts.
 * 
 * @author crazywater
 * 
 */
public class GPodderSearch implements PodcastSearch {
    private static final String SEARCH_URL = "http://gpodder.net/search.json?q=%s";
    private static final String ERROR_CONNECTION = "No connection";
    private static final String ERROR_JSON = "JSON Error";
    private final HttpUtil httpUtil = new HttpUtil();

    public class GPodderResult implements PodcastSearch.Result {
        private String title = "";
        private String website = "";
        private String description = "";
        private String feedUrl = "";
        private String imgUrl = "";

        public String getTitle() {
            return title;
        }

        public String getDescription() {
            return description;
        }

        public String getFeedUrl() {
            return feedUrl;
        }

        public String getImgUrl() {
            return imgUrl;
        }

        public String getWebsite() {
            return website;
        }
    };

    public void search(final String query, final BooleanCallback<List<Result>, String> callback) {
        runOnThread(new Runnable() {
            @Override
            public void run() {
                String queryUrl = String.format(SEARCH_URL, URLEncoder.encode(query));
                HttpGet request = new HttpGet(queryUrl);
                try {
                    List<Result> results = new ArrayList<Result>();
                    JSONArray response = httpUtil.getJsonArray(request);
                    int max = response.length();
                    for (int i = 0; i < max; i++) {
                        JSONObject jsonResult = response.getJSONObject(i);
                        GPodderResult result = new GPodderResult();
                        result.website = jsonResult.optString("website");
                        result.description = jsonResult.optString("description");
                        result.title = jsonResult.optString("title");
                        result.feedUrl = jsonResult.optString("url");
                        result.imgUrl = jsonResult.optString("scaled_logo_url");
                        results.add(result);
                    }
                    callback.success(results);
                } catch (IOException e) {
                    callback.fail(ERROR_CONNECTION);
                } catch (JSONException e) {
                    callback.fail(ERROR_JSON);
                }
            }
        });
    }

    private void runOnThread(Runnable runnable) {
        Thread thread = new Thread(runnable);
        thread.start();
    }
}