Implemented web scraper search.

searchproviders.yml

@@ -1,23 +1,53 @@
-- name: Soundcloud
+#- name: Soundcloud
-  type: WebScraperProvider
+  #abbr: SC
-  search_url: https://soundcloud.com/search/sounds?q=$QUERY
+  #type: WebScraperSearcher
-  result_item: li.searchList__item
+  #search_url: https://soundcloud.com/search/sounds?q=$QUERY
-  result_fields:
+  #result_selector: li.searchList__item
-    artist: .soundTitle__username
+  #result_field_selectors:
-    title: .soundTitle__title
+    #artist: .soundTitle__username
-    link_href: a.soundTitle__title
+    #title: .soundTitle__title
+    #link: a.soundTitle__title
+#- name: Soundcloud
+  #abbr:SC
+  #type: ApiSearcher
+  #search_url: https://api.soundcloud.com/tracks?q=$QUERY&access=playable&limit=10&linked_partitioning=true
+  #format: json
+  #result_array: collection
+  #result_field_names:
+    #title: title
+    #link: uri
 - name: Bandcamp
-  type: WebScraperProvider
+  abbr: BC
+  type: WebScraperSearcher
   search_url: https://bandcamp.com/search?q=$QUERY&item_type
-  result_item: li.searchresult
+  result_selector: li.searchresult
-  result_fields:
+  result_field_selectors:
     title: .heading
-    link_href: .heading a
+    link: .heading a
     album_artist: .subhead
-# - name: Youtube
+ #- name: Youtube
-#   search_url: 
+   #abbr: YT
-#   result_item: 
+   #search_url: https://www.youtube.com/results?search_query=$QUERY
-#   result_fields:
+   #result_item: ytd-video-renderer.ytd-item-section-renderer
-#     title: 
+   #result_fields:
-#     link_href: 
+     #title: 
-#     album_artist: 
+     #link_href: 
+     #album_artist: 
+#- name: Jamendo
+  #abbr: JM
+  #type: WebScraperSearcher
+  #search_url: https://www.jamendo.com/search/tracks?q=$QUERY
+  #result_selector: li.active-result
+  #result_field_selectors:
+    #link: a.js-search-item-link
+    #title_artist: a.js-search-item-link
+#- Name: Jamendo
+  #abbr: JM
+  #type: ApiSearcher
+  #search_url: https://api.jamendo.com/v3.0/tracks/?client_id=$SECRET&format=jsonpretty&limit=10&include=musicinfo&groupby=artist_id&search=$QUERY
+  #format: json
+  #result_array: results
+  #result_field_names:
+    #title: name
+    #artist: artist_name
+    #album: album_name

src/main/java/moe/nekojimi/musicsearcher/Main.java

@@ -5,17 +5,69 @@
  */
 package moe.nekojimi.musicsearcher;
 
+import com.amihaiemil.eoyaml.Yaml;
+import com.amihaiemil.eoyaml.YamlInput;
+import com.amihaiemil.eoyaml.YamlMapping;
+import com.amihaiemil.eoyaml.YamlSequence;
+import java.io.File;
+import java.io.IOException;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ExecutionException;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import moe.nekojimi.musicsearcher.providers.Searcher;
+
 /**
  *
  * @author jim
  */
 public class Main 
 {
+    private static final Map<String, Searcher> searchers = new HashMap<>();
+    
     /**
      * @param args the command line arguments
      */
-    public static void main(String[] args) 
+    public static void main(String[] args) throws IOException 
+    {
+//        System.out.println("Hello world!");
+        YamlInput input = Yaml.createYamlInput(new File("searchproviders.yml"));
+        YamlSequence seq = input.readYamlSequence();
+        for (int i = 0; i < seq.size(); i++)
+        {
+            try 
+            {
+                YamlMapping map = seq.yamlMapping(i);
+                String type = map.string("type");
+                Class<? extends Searcher> clazz = (Class<? extends Searcher>) Class.forName("moe.nekojimi.musicsearcher.providers." + type);
+                Constructor<? extends Searcher> constructor = clazz.getConstructor(YamlMapping.class);
+                Searcher searcher = constructor.newInstance(map);
+                searchers.put(searcher.getName(), searcher);
+                
+            } catch (ClassNotFoundException | NoSuchMethodException | SecurityException | InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException ex) {
+                Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+            }
+        }
+        
+        System.out.println(searchers);
+        String query = "Test";
+        for (Searcher searcher: searchers.values())
+        {
+            System.out.println("Searching " + searcher.getName() + " for " + query);
+            try 
+            {
+                List<Result> results = searcher.searchAndWait(query);
+                for (Result result: results)
                 {
-        System.out.println("Hello world!");
+                    System.out.println("\t" + result);
+                }
+            } catch (InterruptedException | ExecutionException ex) {
+                Logger.getLogger(Main.class.getName()).log(Level.SEVERE, null, ex);
+            }
+        }
     }
 }

src/main/java/moe/nekojimi/musicsearcher/Result.java

@@ -5,10 +5,55 @@
  */
 package moe.nekojimi.musicsearcher;
 
+import java.net.URL;
+
 /**
  *
  * @author jim
  */
-public class Result {
+public class Result 
+{
+    private URL link;
+    private String artist;
+    private String album;
+    private String title;
+
+    public URL getLink() {
+        return link;
+    }
+
+    public void setLink(URL link) {
+        this.link = link;
+    }
+
+    public String getArtist() {
+        return artist;
+    }
+
+    public void setArtist(String artist) {
+        this.artist = artist;
+    }
+
+    public String getAlbum() {
+        return album;
+    }
+
+    public void setAlbum(String album) {
+        this.album = album;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    @Override
+    public String toString() {
+        return "Result{" + "link=" + link + ", artist=" + artist + ", album=" + album + ", title=" + title + '}';
+    }
+    
     
 }

src/main/java/moe/nekojimi/musicsearcher/providers/MetaSearcher.java

@@ -5,8 +5,11 @@
  */
 package moe.nekojimi.musicsearcher.providers;
 
+import java.util.ArrayList;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
+import java.util.concurrent.CompletableFuture;
 import moe.nekojimi.musicsearcher.Result;
 
 /**
@@ -16,7 +19,9 @@ import moe.nekojimi.musicsearcher.Result;
 public class MetaSearcher extends Searcher
 {
     
-    private final Set<Searcher> searchers;
+    private final Set<Searcher> searchers = new HashSet<>();
+    private int minSearchTime = 10000; // ms
+    private int maxSearchTime = 30000; // ms
 
     public MetaSearcher() 
     {
@@ -24,9 +29,26 @@ public class MetaSearcher extends Searcher
     }
 
     @Override
-    public List<Result> search(String query) 
+    protected List<Result> doSearch(String query) 
     {
-        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+        List<Result> results = new ArrayList<>();
+        List<CompletableFuture<List<Result>>> searches = new ArrayList<>();
+        for (Searcher searcher: searchers)
+        {
+            CompletableFuture<List<Result>> search = searcher.search(query);
+            searches.add(search);
+            search.whenComplete((t, u) -> 
+            {
+                if (u == null)
+                {
+                    results.addAll(t);
+//                    searches.remove(search);
                 }
+            });
+        }
+        CompletableFuture.allOf((CompletableFuture<?>[]) searches.toArray());
+        return results;
+    }
+
     
 }

src/main/java/moe/nekojimi/musicsearcher/providers/Searcher.java

@@ -5,11 +5,11 @@
  */
 package moe.nekojimi.musicsearcher.providers;
 
+import com.amihaiemil.eoyaml.YamlMapping;
 import java.util.List;
+import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ForkJoinPool;
-import java.util.concurrent.Future;
-import java.util.concurrent.FutureTask;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 import moe.nekojimi.musicsearcher.Result;
@@ -20,7 +20,7 @@ import moe.nekojimi.musicsearcher.Result;
  */
 public abstract class Searcher 
 {
-    private final String name;
+    final String name;
     private final ForkJoinPool executor;
 
     public Searcher(String name) 
@@ -29,6 +29,17 @@ public abstract class Searcher
         this.executor = new ForkJoinPool();
     }
     
+    public Searcher(YamlMapping yaml)
+    {
+        this(yaml.string("name"));
+        assert yaml.string("type").equals(this.getClass().getSimpleName());
+    }
+
+    public String getName() 
+    {
+        return name;
+    }
+    
     public List<Result> searchAndWait(String query) throws InterruptedException, ExecutionException
     {
         try 
@@ -45,15 +56,19 @@ public abstract class Searcher
         return search(query).get(limit, unit);
     }
     
-    public Future<List<Result>> search(String query)
+    public CompletableFuture<List<Result>> search(String query)
     {
-        FutureTask<List<Result>> task = new FutureTask<>(() -> 
+        CompletableFuture<List<Result>> future = new CompletableFuture<>();
-        {
+        future.completeAsync(()->doSearch(query), executor);
-            return doSearch(query);
+        return future;
-        });
-        executor.execute(task);
-        return task;
     }
 
     protected abstract List<Result> doSearch(String query);
+
+    @Override
+    public String toString() {
+        return this.getClass().getSimpleName() + "{" + "name=" + name + '}';
+    }
+    
+    
 }

src/main/java/moe/nekojimi/musicsearcher/providers/WebScraperSearcher.java

@@ -5,9 +5,21 @@
  */
 package moe.nekojimi.musicsearcher.providers;
 
+import com.amihaiemil.eoyaml.YamlMapping;
+import java.io.IOException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLEncoder;
+import java.nio.charset.Charset;
 import java.util.List;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import java.util.stream.Collectors;
 import moe.nekojimi.musicsearcher.Result;
 import org.jsoup.Jsoup;
+import org.jsoup.nodes.Document;
+import org.jsoup.nodes.Element;
+import org.jsoup.select.Elements;
 
 /**
  *
@@ -16,22 +28,123 @@ import org.jsoup.Jsoup;
 public class WebScraperSearcher extends Searcher
 {
     private String searchUrl;
+    private URL rootURL;
     
-    private String resultItem;
+    private String resultSelector;
-    private String artistItem;
+    private String resultArtistSelector;
-    private String titleItem;
+    private String resultTitleSelector;
-    private String linkHrefItem;
+    private String resultLinkSelector;
-    private String albumArtistItem;
+    private String resultAlbumArtistSelector;
 
     public WebScraperSearcher(String name)
     {
         super(name);
     }
 
+    public WebScraperSearcher(YamlMapping yaml) throws MalformedURLException 
+    {
+        super(yaml);
+        searchUrl = yaml.string("search_url");
+        rootURL = fillURL("");
+        rootURL = new URL(rootURL.getProtocol(), rootURL.getHost(), "");
+        resultSelector = yaml.string("result_selector");
+        
+        YamlMapping fields = yaml.yamlMapping("result_field_selectors");
+        if (fields != null)
+        {
+            resultArtistSelector = fields.string("artist");
+            resultTitleSelector = fields.string("title");
+            resultLinkSelector = fields.string("link");
+            resultAlbumArtistSelector = fields.string("album_artist");
+        }
+    }
+
     @Override
     protected List<Result> doSearch(String query) 
     {
-        Jsoup.
+        try 
+        {
+            URL url = fillURL(query);
+            Document doc = Jsoup.parse(url, 10000);
+            System.out.println("Document from " + name + ":" + doc.html());
+            Elements resultEles = doc.select(resultSelector);
+            return resultEles.stream()
+                    .map((ele)->parseResultElement(ele))
+                    .filter((res)->res!=null)
+                    .collect(Collectors.toList());
+        } catch (IOException ex) 
+        {
+            Logger.getLogger(WebScraperSearcher.class.getName()).log(Level.SEVERE, null, ex);
+            return List.of();
+        }
+    }
+
+    protected URL fillURL(String query) throws MalformedURLException 
+    {
+        URL url = new URL(searchUrl.replaceAll("\\$QUERY", URLEncoder.encode(query, Charset.forName("utf-8"))));
+        return url;
+    }
+
+    protected Result parseResultElement(Element ele)
+    {
+        try
+        {
+            Result res = new Result();
+            // Artist
+            if (resultArtistSelector != null)
+            {
+                Element artistEle = ele.selectFirst(resultArtistSelector);
+                if (artistEle != null)
+                    res.setArtist(artistEle.text());
+            }
+            // Title
+            if (resultTitleSelector != null)
+            {
+                Element titleEle = ele.selectFirst(resultTitleSelector);
+                if (titleEle != null)
+                    res.setTitle(titleEle.text());
+            }
+            // Link
+            if (resultLinkSelector != null)
+            {
+                Element linkEle = ele.selectFirst(resultLinkSelector);
+                if (linkEle != null)
+                {
+                    String link;
+                    if (linkEle.hasAttr("href"))
+                        link = linkEle.attr("href");
+                    else
+                        link = linkEle.text();
+                    
+                    URL url;
+                    if(!link.startsWith("http"))
+                        url = new URL(rootURL, link);
+                    else
+                        url = new URL(link);
+                    
+                    res.setLink(url);
+                }
+            }
+
+            // Artist + Album
+            if (resultAlbumArtistSelector != null)
+            {
+                Element alArtEle = ele.selectFirst(resultAlbumArtistSelector);
+                if (alArtEle != null)
+                {
+                    
+                }
+            }
+            
+            // Artist + Title
+
+            return res;
+        }
+        catch (Exception ex)
+        {
+            Logger.getLogger(WebScraperSearcher.class.getName()).log(Level.SEVERE, null, ex);
+            return null;
+        }
     }
     
 }