Added osu!Mirror download server.

Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>

src/itdelatrisu/opsu/Utils.java

@@ -51,6 +51,8 @@ import java.util.Scanner;
 
 import javax.imageio.ImageIO;
 
+import org.json.JSONException;
+import org.json.JSONObject;
 import org.lwjgl.BufferUtils;
 import org.lwjgl.opengl.Display;
 import org.lwjgl.opengl.GL11;
@@ -554,6 +556,25 @@ public class Utils {
 		}
 	}
 
+	/**
+	 * Returns a JSON object from a URL.
+	 * @param url the remote URL
+	 * @return the JSON object
+	 * @author Roland Illig (http://stackoverflow.com/a/4308662)
+	 */
+	public static JSONObject readJsonFromUrl(URL url) throws IOException {
+		String s = Utils.readDataFromUrl(url);
+		JSONObject json = null;
+		if (s != null) {
+			try {
+				json = new JSONObject(s);
+			} catch (JSONException e) {
+				ErrorHandler.error("Failed to create JSON object.", e, true);
+			}
+		}
+		return json;
+	}
+
 	/**
 	 * Converts an input stream to a string.
 	 * @param is the input stream

src/itdelatrisu/opsu/downloads/DownloadNode.java

@@ -26,6 +26,7 @@ import itdelatrisu.opsu.UI;
 import itdelatrisu.opsu.Utils;
 import itdelatrisu.opsu.downloads.Download.DownloadListener;
 import itdelatrisu.opsu.downloads.Download.Status;
+import itdelatrisu.opsu.downloads.servers.DownloadServer;
 
 import java.io.File;
 
@@ -239,10 +240,15 @@ public class DownloadNode {
 	 * @see #getDownload()
 	 */
 	public void createDownload(DownloadServer server) {
-		if (download == null) {
+		if (download != null)
+			return;
+
+		String url = server.getDownloadURL(beatmapSetID);
+		if (url == null)
+			return;
 		String path = String.format("%s%c%d", Options.getOSZDir(), File.separatorChar, beatmapSetID);
 		String rename = String.format("%d %s - %s.osz", beatmapSetID, artist, title);
-			this.download = new Download(server.getURL(beatmapSetID), path, rename);
+		this.download = new Download(url, path, rename);
 		download.setListener(new DownloadListener() {
 			@Override
 			public void completed() {
@@ -255,7 +261,6 @@ public class DownloadNode {
 			}
 		});
 	}
-	}
 
 	/**
 	 * Returns the associated download object, or null if none.

src/itdelatrisu/opsu/downloads/servers/BloodcatServer.java

@@ -16,10 +16,11 @@
  * along with opsu!.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-package itdelatrisu.opsu.downloads;
+package itdelatrisu.opsu.downloads.servers;
 
 import itdelatrisu.opsu.ErrorHandler;
 import itdelatrisu.opsu.Utils;
+import itdelatrisu.opsu.downloads.DownloadNode;
 
 import java.io.IOException;
 import java.io.UnsupportedEncodingException;
@@ -28,13 +29,15 @@ import java.net.URL;
 import java.net.URLEncoder;
 
 import org.json.JSONArray;
-import org.json.JSONException;
 import org.json.JSONObject;
 
 /**
  * Download server: http://bloodcat.com/osu/
  */
 public class BloodcatServer extends DownloadServer {
+	/** Server name. */
+	private static final String SERVER_NAME = "Bloodcat";
+
 	/** Formatted download URL: {@code beatmapSetID} */
 	private static final String DOWNLOAD_URL = "http://bloodcat.com/osu/s/%d";
 
@@ -48,7 +51,10 @@ public class BloodcatServer extends DownloadServer {
 	public BloodcatServer() {}
 
 	@Override
-	public String getURL(int beatmapSetID) {
+	public String getName() { return SERVER_NAME; }
+
+	@Override
+	public String getDownloadURL(int beatmapSetID) {
 		return String.format(DOWNLOAD_URL, beatmapSetID);
 	}
 
@@ -58,7 +64,7 @@ public class BloodcatServer extends DownloadServer {
 		try {
 			// read JSON
 			String search = String.format(SEARCH_URL, URLEncoder.encode(query, "UTF-8"), rankedOnly ? "0" : "", page);
-			JSONObject json = readJsonFromUrl(new URL(search));
+			JSONObject json = Utils.readJsonFromUrl(new URL(search));
 			if (json == null) {
 				this.totalResults = -1;
 				return null;
@@ -86,24 +92,8 @@ public class BloodcatServer extends DownloadServer {
 	}
 
 	@Override
-	public int totalResults() { return totalResults; }
+	public int minQueryLength() { return 0; }
 
-	/**
+	@Override
-	 * Returns a JSON object from a URL.
+	public int totalResults() { return totalResults; }
-	 * @param url the remote URL
-	 * @return the JSON object
-	 * @author Roland Illig (http://stackoverflow.com/a/4308662)
-	 */
-	private static JSONObject readJsonFromUrl(URL url) throws IOException {
-		String s = Utils.readDataFromUrl(url);
-		JSONObject json = null;
-		if (s != null) {
-			try {
-				json = new JSONObject(s);
-			} catch (JSONException e) {
-				ErrorHandler.error("Failed to create JSON object.", e, true);
-			}
-		}
-		return json;
-	}
 }

src/itdelatrisu/opsu/downloads/servers/DownloadServer.java

@@ -16,7 +16,9 @@
  * along with opsu!.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-package itdelatrisu.opsu.downloads;
+package itdelatrisu.opsu.downloads.servers;
+
+import itdelatrisu.opsu.downloads.DownloadNode;
 
 import java.io.IOException;
 
@@ -27,12 +29,18 @@ public abstract class DownloadServer {
 	/** Track preview URL. */
 	private static final String PREVIEW_URL = "http://b.ppy.sh/preview/%d.mp3";
 
+	/**
+	 * Returns the name of the download server.
+	 * @return the server name
+	 */
+	public abstract String getName();
+
 	/**
 	 * Returns a web address to download the given beatmap.
 	 * @param beatmapSetID the beatmap set ID
-	 * @return the URL string
+	 * @return the URL string, or null if the address could not be determined
 	 */
-	public abstract String getURL(int beatmapSetID);
+	public abstract String getDownloadURL(int beatmapSetID);
 
 	/**
 	 * Returns a list of results for a given search query, or null if the
@@ -45,6 +53,12 @@ public abstract class DownloadServer {
 	 */
 	public abstract DownloadNode[] resultList(String query, int page, boolean rankedOnly) throws IOException;
 
+	/**
+	 * Returns the minimum allowable length of a search query.
+	 * @return the minimum length, or 0 if none
+	 */
+	public abstract int minQueryLength();
+
 	/**
 	 * Returns the total number of results for the last search query.
 	 * This will differ from the the size of the array returned by

src/itdelatrisu/opsu/downloads/servers/OsuMirrorServer.java

@@ -0,0 +1,129 @@
+/*
+ * opsu! - an open-source osu! client
+ * Copyright (C) 2014, 2015 Jeffrey Han
+ *
+ * opsu! is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * opsu! is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with opsu!.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package itdelatrisu.opsu.downloads.servers;
+
+import itdelatrisu.opsu.ErrorHandler;
+import itdelatrisu.opsu.Utils;
+import itdelatrisu.opsu.downloads.DownloadNode;
+
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLEncoder;
+import java.util.HashMap;
+
+import org.json.JSONArray;
+import org.json.JSONObject;
+
+/**
+ * Download server: http://loli.al/
+ */
+public class OsuMirrorServer extends DownloadServer {
+	/** Server name. */
+	private static final String SERVER_NAME = "osu!Mirror";
+
+	/** Formatted download URL: {@code beatmapSetID} */
+	private static final String DOWNLOAD_URL = "http://loli.al/d/%d/";
+
+	/** Formatted search URL: {@code page,query} */
+	private static final String SEARCH_URL = "http://loli.al/mirror/search/%d.json?keyword=%s";
+
+	/** Formatted home URL: {@code page} */
+	private static final String HOME_URL = "http://loli.al/mirror/home/%d.json";
+
+	/** Minimum allowable length of a search query. */
+	private static final int MIN_QUERY_LENGTH = 3;
+
+	/** Total result count from the last query. */
+	private int totalResults = -1;
+
+	/** Max server download ID seen (for approximating total pages). */
+	private int maxServerID = 0;
+
+	/** Lookup table from beatmap set ID -> server download ID. */
+	private HashMap<Integer, Integer> idTable = new HashMap<Integer, Integer>();
+
+	/** Constructor. */
+	public OsuMirrorServer() {}
+
+	@Override
+	public String getName() { return SERVER_NAME; }
+
+	@Override
+	public String getDownloadURL(int beatmapSetID) {
+		return (idTable.containsKey(beatmapSetID)) ? String.format(DOWNLOAD_URL, idTable.get(beatmapSetID)) : null;
+	}
+
+	@Override
+	public DownloadNode[] resultList(String query, int page, boolean rankedOnly) throws IOException {
+		// NOTE: ignores 'rankedOnly' flag.
+		DownloadNode[] nodes = null;
+		try {
+			// read JSON
+			String search;
+			boolean isSearch;
+			if (query.isEmpty()) {
+				isSearch = false;
+				search = String.format(HOME_URL, page);
+			} else {
+				isSearch = true;
+				search = String.format(SEARCH_URL, page, URLEncoder.encode(query, "UTF-8"));
+			}
+			JSONObject json = Utils.readJsonFromUrl(new URL(search));
+			if (json == null || json.getInt("code") != 0) {
+				this.totalResults = -1;
+				return null;
+			}
+
+			// parse result list
+			JSONArray arr = json.getJSONArray("maplist");
+			nodes = new DownloadNode[arr.length()];
+			for (int i = 0; i < nodes.length; i++) {
+				JSONObject item = arr.getJSONObject(i);
+				int beatmapSetID = item.getInt("OSUSetid");
+				int serverID = item.getInt("id");
+				nodes[i] = new DownloadNode(
+					beatmapSetID, item.getString("ModifyDate"),
+					item.getString("Title"), null,
+					item.getString("Artist"), null,
+					item.getString("Mapper")
+				);
+				idTable.put(beatmapSetID, serverID);
+				if (serverID > maxServerID)
+					maxServerID = serverID;
+			}
+
+			// store total result count
+			if (isSearch)
+				this.totalResults = json.getInt("totalRows");
+			else
+				this.totalResults = maxServerID;
+		} catch (MalformedURLException | UnsupportedEncodingException e) {
+			ErrorHandler.error(String.format("Problem loading result list for query '%s'.", query), e, true);
+		}
+		return nodes;
+	}
+
+	@Override
+	public int minQueryLength() { return MIN_QUERY_LENGTH; }
+
+	@Override
+	public int totalResults() { return totalResults; }
+}

src/itdelatrisu/opsu/states/DownloadsMenu.java

@@ -31,11 +31,12 @@ import itdelatrisu.opsu.Utils;
 import itdelatrisu.opsu.audio.MusicController;
 import itdelatrisu.opsu.audio.SoundController;
 import itdelatrisu.opsu.audio.SoundEffect;
-import itdelatrisu.opsu.downloads.BloodcatServer;
 import itdelatrisu.opsu.downloads.Download;
 import itdelatrisu.opsu.downloads.DownloadList;
 import itdelatrisu.opsu.downloads.DownloadNode;
-import itdelatrisu.opsu.downloads.DownloadServer;
+import itdelatrisu.opsu.downloads.servers.BloodcatServer;
+import itdelatrisu.opsu.downloads.servers.DownloadServer;
+import itdelatrisu.opsu.downloads.servers.OsuMirrorServer;
 
 import java.io.File;
 import java.io.IOException;
@@ -71,8 +72,11 @@ public class DownloadsMenu extends BasicGameState {
 	/** Minimum time, in milliseconds, that must elapse between queries. */
 	private static final int MIN_REQUEST_INTERVAL = 300;
 
-	/** The beatmap download server. */
+	/** Available beatmap download servers. */
-	private DownloadServer server = new BloodcatServer();
+	private static final DownloadServer[] SERVERS = { new BloodcatServer(), new OsuMirrorServer() };
+
+	/** The beatmap download server index. */
+	private int serverIndex = 0;
 
 	/** The current list of search results. */
 	private DownloadNode[] resultList;
@@ -138,7 +142,7 @@ public class DownloadsMenu extends BasicGameState {
 	private MenuButton prevPage, nextPage;
 
 	/** Buttons. */
-	private MenuButton clearButton, importButton, resetButton, rankedButton;
+	private MenuButton clearButton, importButton, resetButton, rankedButton, serverButton;
 
 	/** Beatmap importing thread. */
 	private Thread importThread;
@@ -170,11 +174,11 @@ public class DownloadsMenu extends BasicGameState {
 		int height = container.getHeight();
 		float baseX = width * 0.024f;
 		float searchY = (height * 0.05f) + Utils.FONT_LARGE.getLineHeight();
-		float searchWidth = width * 0.35f;
+		float searchWidth = width * 0.3f;
 
 		// search
 		searchTimer = SEARCH_DELAY;
-		searchResultString = "Type to search!";
+		searchResultString = "Loading data from server...";
 		search = new TextField(
 				container, Utils.FONT_DEFAULT, (int) baseX, (int) searchY,
 				(int) searchWidth, Utils.FONT_MEDIUM.getLineHeight()
@@ -200,8 +204,10 @@ public class DownloadsMenu extends BasicGameState {
 		// buttons
 		float buttonMarginX = width * 0.004f;
 		float buttonHeight = height * 0.038f;
-		float topButtonWidth = width * 0.14f;
+		float resetWidth = width * 0.085f;
-		float lowerButtonWidth = width * 0.12f;
+		float rankedWidth = width * 0.15f;
+		float serverWidth = width * 0.12f;
+		float lowerWidth = width * 0.12f;
 		float topButtonY = searchY + Utils.FONT_MEDIUM.getLineHeight() / 2f;
 		float lowerButtonY = height * 0.995f - searchY - buttonHeight / 2f;
 		Image button = GameImage.MENU_BUTTON_MID.getImage();
@@ -209,25 +215,33 @@ public class DownloadsMenu extends BasicGameState {
 		Image buttonR = GameImage.MENU_BUTTON_RIGHT.getImage();
 		buttonL = buttonL.getScaledCopy(buttonHeight / buttonL.getHeight());
 		buttonR = buttonR.getScaledCopy(buttonHeight / buttonR.getHeight());
-		Image topButton = button.getScaledCopy((int) topButtonWidth - buttonL.getWidth() - buttonR.getWidth(), (int) buttonHeight);
+		int lrButtonWidth = buttonL.getWidth() + buttonR.getWidth();
-		Image lowerButton = button.getScaledCopy((int) lowerButtonWidth - buttonL.getWidth() - buttonR.getWidth(), (int) buttonHeight);
+		Image resetButtonImage = button.getScaledCopy((int) resetWidth - lrButtonWidth, (int) buttonHeight);
-		float fullTopButtonWidth = topButton.getWidth() + buttonL.getWidth() + buttonR.getWidth();
+		Image rankedButtonImage = button.getScaledCopy((int) rankedWidth - lrButtonWidth, (int) buttonHeight);
-		float fullLowerButtonWidth = lowerButton.getWidth() + buttonL.getWidth() + buttonR.getWidth();
+		Image serverButtonImage = button.getScaledCopy((int) serverWidth - lrButtonWidth, (int) buttonHeight);
-		clearButton = new MenuButton(lowerButton, buttonL, buttonR,
+		Image lowerButtonImage = button.getScaledCopy((int) lowerWidth - lrButtonWidth, (int) buttonHeight);
-				width * 0.75f + buttonMarginX + fullLowerButtonWidth / 2f, lowerButtonY);
+		float resetButtonWidth = resetButtonImage.getWidth() + lrButtonWidth;
-		importButton = new MenuButton(lowerButton, buttonL, buttonR,
+		float rankedButtonWidth = rankedButtonImage.getWidth() + lrButtonWidth;
-				width - buttonMarginX - fullLowerButtonWidth / 2f, lowerButtonY);
+		float serverButtonWidth = serverButtonImage.getWidth() + lrButtonWidth;
-		resetButton = new MenuButton(topButton, buttonL, buttonR,
+		float lowerButtonWidth = lowerButtonImage.getWidth() + lrButtonWidth;
-				baseX + searchWidth + buttonMarginX + fullTopButtonWidth / 2f, topButtonY);
+		clearButton = new MenuButton(lowerButtonImage, buttonL, buttonR,
-		rankedButton = new MenuButton(topButton, buttonL, buttonR,
+				width * 0.75f + buttonMarginX + lowerButtonWidth / 2f, lowerButtonY);
-				baseX + searchWidth + buttonMarginX * 2f + fullTopButtonWidth * 3 / 2f, topButtonY);
+		importButton = new MenuButton(lowerButtonImage, buttonL, buttonR,
+				width - buttonMarginX - lowerButtonWidth / 2f, lowerButtonY);
+		resetButton = new MenuButton(resetButtonImage, buttonL, buttonR,
+				baseX + searchWidth + buttonMarginX + resetButtonWidth / 2f, topButtonY);
+		rankedButton = new MenuButton(rankedButtonImage, buttonL, buttonR,
+				baseX + searchWidth + buttonMarginX * 2f + resetButtonWidth + rankedButtonWidth / 2f, topButtonY);
+		serverButton = new MenuButton(serverButtonImage, buttonL, buttonR,
+				baseX + searchWidth + buttonMarginX * 3f + resetButtonWidth + rankedButtonWidth + serverButtonWidth / 2f, topButtonY);
 		clearButton.setText("Clear", Utils.FONT_MEDIUM, Color.white);
 		importButton.setText("Import All", Utils.FONT_MEDIUM, Color.white);
-		resetButton.setText("Reset Search", Utils.FONT_MEDIUM, Color.white);
+		resetButton.setText("Reset", Utils.FONT_MEDIUM, Color.white);
 		clearButton.setHoverFade();
 		importButton.setHoverFade();
 		resetButton.setHoverFade();
 		rankedButton.setHoverFade();
+		serverButton.setHoverFade();
 	}
 
 	@Override
@@ -317,6 +331,8 @@ public class DownloadsMenu extends BasicGameState {
 		resetButton.draw(Color.red);
 		rankedButton.setText((rankedOnly) ? "Show Unranked" : "Hide Unranked", Utils.FONT_MEDIUM, Color.white);
 		rankedButton.draw(Color.magenta);
+		serverButton.setText(SERVERS[serverIndex].getName(), Utils.FONT_MEDIUM, Color.white);
+		serverButton.draw(Color.blue);
 
 		// importing beatmaps
 		if (importThread != null) {
@@ -348,6 +364,7 @@ public class DownloadsMenu extends BasicGameState {
 		importButton.hoverUpdate(delta, mouseX, mouseY);
 		resetButton.hoverUpdate(delta, mouseX, mouseY);
 		rankedButton.hoverUpdate(delta, mouseX, mouseY);
+		serverButton.hoverUpdate(delta, mouseX, mouseY);
 
 		// focus timer
 		if (focusResult != -1 && focusTimer < FOCUS_DELAY)
@@ -361,7 +378,9 @@ public class DownloadsMenu extends BasicGameState {
 			searchTimerReset = false;
 
 			final String query = search.getText().trim().toLowerCase();
-			if (lastQuery == null || !query.equals(lastQuery)) {
+			final DownloadServer server = SERVERS[serverIndex];
+			if ((lastQuery == null || !query.equals(lastQuery)) &&
+			    (query.length() == 0 || query.length() >= server.minQueryLength())) {
 				lastQuery = query;
 				lastQueryDir = pageDir;
 
@@ -409,7 +428,7 @@ public class DownloadsMenu extends BasicGameState {
 								else {
 									if (query.isEmpty())
 										searchResultString = "Type to search!";
-									else if (totalResults == 0)
+									else if (totalResults == 0 || resultList.length == 0)
 										searchResultString = "No results found.";
 									else
 										searchResultString = String.format("%d result%s found!",
@@ -481,7 +500,7 @@ public class DownloadsMenu extends BasicGameState {
 							} else {
 								// play preview
 								try {
-									final URL url = new URL(server.getPreviewURL(node.getID()));
+									final URL url = new URL(SERVERS[serverIndex].getPreviewURL(node.getID()));
 									MusicController.pause();
 									new Thread() {
 										@Override
@@ -525,11 +544,15 @@ public class DownloadsMenu extends BasicGameState {
 							} else {
 								// start download
 								if (!DownloadList.get().contains(node.getID())) {
+									node.createDownload(SERVERS[serverIndex]);
+									if (node.getDownload() == null)
+										UI.sendBarNotification("The download could not be started.");
+									else {
 										DownloadList.get().addNode(node);
-									node.createDownload(server);
 										node.getDownload().start();
 									}
 								}
+							}
 						} else {
 							// set focus
 							focusResult = index;
@@ -624,6 +647,22 @@ public class DownloadsMenu extends BasicGameState {
 			resetSearchTimer();
 			return;
 		}
+		if (serverButton.contains(x, y)) {
+			SoundController.playSound(SoundEffect.MENUCLICK);
+			resultList = null;
+			startResult = 0;
+			focusResult = -1;
+			totalResults = 0;
+			page = 0;
+			pageResultTotal = 1;
+			pageDir = Page.RESET;
+			searchResultString = "Loading data from server...";
+			serverIndex = (serverIndex + 1) % SERVERS.length;
+			lastQuery = null;
+			pageDir = Page.RESET;
+			resetSearchTimer();
+			return;
+		}
 
 		// downloads
 		if (!DownloadList.get().isEmpty() && DownloadNode.downloadAreaContains(x, y)) {
@@ -755,6 +794,7 @@ public class DownloadsMenu extends BasicGameState {
 		importButton.resetHover();
 		resetButton.resetHover();
 		rankedButton.resetHover();
+		serverButton.resetHover();
 		focusResult = -1;
 		startResult = 0;
 		startDownloadIndex = 0;