Convert old player configs

src/main/java/com/massivecraft/factions/zcore/persist/EntityCollection.java

@@ -1,15 +1,15 @@
 package com.massivecraft.factions.zcore.persist;
 
+import com.massivecraft.factions.FPlayer;
 import com.massivecraft.factions.zcore.util.DiscUtil;
 import com.massivecraft.factions.zcore.util.TextUtil;
+import com.massivecraft.factions.zcore.util.UUIDFetcher;
 import org.bukkit.Bukkit;
 import org.bukkit.craftbukkit.libs.com.google.gson.Gson;
 
 import java.io.File;
 import java.lang.reflect.Type;
-import java.util.Collection;
-import java.util.HashMap;
-import java.util.Map;
+import java.util.*;
 import java.util.Map.Entry;
 import java.util.logging.Level;
 
@@ -221,6 +221,34 @@ public abstract class EntityCollection<E extends Entity> {
         }
 
         Type type = this.getMapType();
+        if (type.toString().contains("FPlayer")) {
+            Map<String, FPlayer> data = this.gson.fromJson(content, type);
+            // Convert any leftover player names in this file
+            ArrayList<String> list = new ArrayList<String>();
+            for (String value : data.keySet()) {
+                if (value.matches("[a-z0-9_]{2,16}")) {
+                    list.add(value);
+                }
+            }
+            if (list.size() > 0) {
+                UUIDFetcher fetcher = new UUIDFetcher(list);
+                try {
+                    Map<String, UUID> response = fetcher.call();
+                    for (String value : response.keySet()) {
+                        String id = response.get(value).toString();
+
+                        FPlayer player = data.get(value);
+                        data.remove(value); // Out with the old...
+                        data.put(response.get(value).toString(), player); // And in with the new
+                        player.setId(id); // Update the object so it knows
+                    }
+                } catch (Exception e) {
+                    e.printStackTrace();
+                }
+                Bukkit.getLogger().log(Level.INFO, "Converted " + list.size() + " old player names to UUID");
+            }
+            return (Map<String, E>) data;
+        }
         try {
             return this.gson.fromJson(content, type);
         } catch (Exception ex) {

src/main/java/com/massivecraft/factions/zcore/util/UUIDFetcher.java

@@ -0,0 +1,85 @@
+package com.massivecraft.factions.zcore.util;
+
+import com.google.common.collect.ImmutableList;
+import org.json.simple.JSONArray;
+import org.json.simple.JSONObject;
+import org.json.simple.JSONValue;
+import org.json.simple.parser.JSONParser;
+
+import java.io.DataOutputStream;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+import java.util.concurrent.Callable;
+
+/**
+ * @author evilmidget38
+ */
+
+public class UUIDFetcher implements Callable<Map<String, UUID>> {
+    private static final int MAX_SEARCH = 100;
+    private static final String PROFILE_URL = "https://api.mojang.com/profiles/page/";
+    private static final String AGENT = "minecraft";
+    private final JSONParser jsonParser = new JSONParser();
+    private final List<String> names;
+    public UUIDFetcher(List<String> names) {
+        this.names = ImmutableList.copyOf(names);
+    }
+
+    public Map<String, UUID> call() throws Exception {
+        Map<String, UUID> uuidMap = new HashMap<String, UUID>();
+        String body = buildBody(names);
+        for (int i = 1; i < MAX_SEARCH; i++) {
+            HttpURLConnection connection = createConnection(i);
+            writeBody(connection, body);
+            JSONObject jsonObject = (JSONObject) jsonParser.parse(new InputStreamReader(connection.getInputStream()));
+            JSONArray array = (JSONArray) jsonObject.get("profiles");
+            Number count = (Number) jsonObject.get("size");
+            if (count.intValue() == 0) {
+                break;
+            }
+            for (Object profile : array) {
+                JSONObject jsonProfile = (JSONObject) profile;
+                String id = (String) jsonProfile.get("id");
+                String name = (String) jsonProfile.get("name");
+                UUID uuid = UUID.fromString(id.substring(0, 8) + "-" + id.substring(8, 12) + "-" + id.substring(12, 16) + "-" + id.substring(16, 20) + "-" +id.substring(20, 32));
+                uuidMap.put(name, uuid);
+            }
+        }
+        return uuidMap;
+    }
+
+    private static void writeBody(HttpURLConnection connection, String body) throws Exception {
+        DataOutputStream writer = new DataOutputStream(connection.getOutputStream());
+        writer.write(body.getBytes());
+        writer.flush();
+        writer.close();
+    }
+
+    private static HttpURLConnection createConnection(int page) throws Exception {
+        URL url = new URL(PROFILE_URL+page);
+        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+        connection.setRequestMethod("POST");
+        connection.setRequestProperty("Content-Type", "application/json");
+        connection.setUseCaches(false);
+        connection.setDoInput(true);
+        connection.setDoOutput(true);
+        return connection;
+    }
+    @SuppressWarnings("unchecked")
+    private static String buildBody(List<String> names) {
+        List<JSONObject> lookups = new ArrayList<JSONObject>();
+        for (String name : names) {
+            JSONObject obj = new JSONObject();
+            obj.put("name", name);
+            obj.put("agent", AGENT);
+            lookups.add(obj);
+        }
+        return JSONValue.toJSONString(lookups);
+    }
+}