#459 Add other accounts command + Update config docs

src/main/java/fr/xephi/authme/process/login/AsynchronousLogin.java

@@ -223,7 +223,11 @@ public class AsynchronousLogin implements AsynchronousProcess {
             player.setNoDamageTicks(0);
 
             service.send(player, MessageKey.LOGIN_SUCCESS);
-            displayOtherAccounts(auth, player);
+
+            // Other auths
+            List<String> auths = dataSource.getAllAuthsByIp(auth.getIp());
+            runCommandOtherAccounts(auths, player, auth.getIp());
+            displayOtherAccounts(auths, player);
 
             final String email = auth.getEmail();
             if (service.getProperty(EmailSettings.RECALL_PLAYERS)
@@ -251,12 +255,29 @@ public class AsynchronousLogin implements AsynchronousProcess {
         }
     }
 
-    private void displayOtherAccounts(PlayerAuth auth, Player player) {
-        if (!service.getProperty(RestrictionSettings.DISPLAY_OTHER_ACCOUNTS) || auth == null) {
+    private void runCommandOtherAccounts(List<String> auths, Player player, String ip) {
+        int threshold = service.getProperty(RestrictionSettings.OTHER_ACCOUNTS_CMD_THRESHOLD);
+        String command = service.getProperty(RestrictionSettings.OTHER_ACCOUNTS_CMD);
+
+        if(threshold <= 1 || command.isEmpty()) {
+            return;
+        }
+
+        if (auths.size() >= threshold) {
+            return;
+        }
+
+        bukkitService.dispatchConsoleCommand(command
+            .replaceAll("%playername%", player.getName())
+            .replaceAll("%playerip%", ip)
+        );
+    }
+
+    private void displayOtherAccounts(List<String> auths, Player player) {
+        if (!service.getProperty(RestrictionSettings.DISPLAY_OTHER_ACCOUNTS)) {
             return;
         }
 
-        List<String> auths = dataSource.getAllAuthsByIp(auth.getIp());
         if (auths.size() <= 1) {
             return;
         }

src/main/java/fr/xephi/authme/service/BukkitService.java

@@ -308,4 +308,12 @@ public class BukkitService implements SettingsDependent {
         return Bukkit.getServer().getBanList(BanList.Type.IP).addBan(ip, reason, expires, source);
     }
 
+    /**
+     * Dispatch a command as console
+     *
+     * @param command the command
+     */
+    public void dispatchConsoleCommand(String command) {
+        Bukkit.dispatchCommand(Bukkit.getConsoleSender(), command);
+    }
 }

src/main/java/fr/xephi/authme/settings/properties/RestrictionSettings.java

@@ -4,6 +4,7 @@ import com.github.authme.configme.Comment;
 import com.github.authme.configme.SettingsHolder;
 import com.github.authme.configme.properties.Property;
 
+import javax.inject.Inject;
 import java.util.List;
 
 import static com.github.authme.configme.properties.PropertyInitializer.newListProperty;
@@ -187,6 +188,14 @@ public class RestrictionSettings implements SettingsHolder {
     public static final Property<List<String>> UNRESTRICTED_NAMES =
         newLowercaseListProperty("settings.unrestrictions.UnrestrictedName");
 
+    @Comment("Threshold of the other accounts command, a value less than 1 means disabled.")
+    public static final Property<Integer> OTHER_ACCOUNTS_CMD_THRESHOLD =
+        newProperty("settings.restrictions.otherAccountsCmdThreshold", 0);
+
+    @Comment("The other accounts command, available variables: %playername%, %playerip%")
+    public static final Property<String> OTHER_ACCOUNTS_CMD =
+        newProperty("settings.restrictions.otherAccountsCmd",
+            "say The player %playername% with ip %playerip% has multiple accounts!");
 
     private RestrictionSettings() {
     }