com.javafxpert.wikibrowser.WikiIdLocatorController.java Source code

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Here is the source code for com.javafxpert.wikibrowser.WikiIdLocatorController.java

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/*
 * Copyright 2015 the original author or authors.
 *
 * 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.javafxpert.wikibrowser;

import com.javafxpert.wikibrowser.model.idlocator.IdLocatorResponse;
import com.javafxpert.wikibrowser.model.idlocator.IdQueryFar;
import com.javafxpert.wikibrowser.model.idlocator.PagePropsFar;
import com.javafxpert.wikibrowser.model.idlocator.PagesFar;
import com.javafxpert.wikibrowser.model.locator.Item;
import com.javafxpert.wikibrowser.model.locator.ItemInfo;
import com.javafxpert.wikibrowser.model.locator.LocatorResponse;
import com.javafxpert.wikibrowser.model.locator.Sitelinks;
import com.javafxpert.wikibrowser.model.search.QueryFar;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import java.net.URI;
import java.util.List;
import java.util.Map;
import java.util.Optional;

/**
 * Created by jamesweaver on 10/13/15.
 */
@RestController
@RequestMapping("/idlocator")
public class WikiIdLocatorController {
    private Log log = LogFactory.getLog(getClass());

    private final WikiBrowserProperties wikiBrowserProperties;

    @Autowired
    public WikiIdLocatorController(WikiBrowserProperties wikiBrowserProperties) {
        this.wikiBrowserProperties = wikiBrowserProperties;
    }

    @RequestMapping(method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
    public ResponseEntity<Object> locatorEndpoint(
            @RequestParam(value = "name", defaultValue = "") String articleName,
            @RequestParam(value = "lang") String lang) {

        String language = wikiBrowserProperties.computeLang(lang);

        ItemInfo itemInfo = null;
        if (!articleName.equals("")) {
            itemInfo = name2Id(articleName, language);
        }

        return Optional.ofNullable(itemInfo).map(cr -> new ResponseEntity<>((Object) cr, HttpStatus.OK))
                .orElse(new ResponseEntity<>("Wikipedia query unsuccessful", HttpStatus.INTERNAL_SERVER_ERROR));
    }

    public ItemInfo name2Id(String articleName, String lang) {

        //TODO: Implement better way of creating the query represented by the following variables
        String n2iqa = "https://";
        String n2iqb = ""; // Some language code e.g. en
        String n2iqc = ".wikipedia.org/w/api.php?action=query&prop=info%7Cpageprops&format=json&inprop=url&formatversion=2&redirects&titles=";
        String n2iqd = ""; // Some article name e.g. Ada_Lovelace

        n2iqb = lang;
        n2iqd = articleName;

        String wpQuery = n2iqa + n2iqb + n2iqc + n2iqd;

        return queryProcessIdLocatorResponse(wpQuery, lang);
    }

    private ItemInfo queryProcessIdLocatorResponse(String query, String lang) {
        query = query.replaceAll(" ", "%20");
        log.info("QUERY: " + query);
        IdLocatorResponse idLocatorResponse = null;
        ItemInfo itemInfo = new ItemInfo();
        try {
            idLocatorResponse = new RestTemplate().getForObject(new URI(query), IdLocatorResponse.class);

            log.info(idLocatorResponse.toString());

            IdQueryFar idQueryFar = idLocatorResponse.getIdQueryFar();
            List<PagesFar> pagesFarList = idQueryFar.getPagesFarList();
            if (pagesFarList.size() > 0) {
                PagesFar pageFar = pagesFarList.get(0);
                PagePropsFar pagePropsFar = pageFar.getPagePropsFar();

                String urlStr = pageFar.getFullUrl();
                String titleStr = pageFar.getTitle();
                String nameStr = urlStr.substring(urlStr.lastIndexOf("/") + 1);
                itemInfo.setArticleUrl(urlStr);
                itemInfo.setArticleTitle(titleStr);
                itemInfo.setArticleName(nameStr);
                itemInfo.setSite(lang + "wiki");
                itemInfo.setLang(lang);

                itemInfo.setItemId(pagePropsFar.getWikibaseItem());
            } else {
                log.info("no pages in results");
            }
        } catch (Exception e) {
            e.printStackTrace();
            log.info("Caught exception when calling IdLocator service " + e);
        }

        return itemInfo;
    }

}