Added party alliances

Adds the following commands:
`/party alliance`
`/party alliance invite <target>`
`/party alliance accept`

Allies will share party chat and will not be able to harm eachother.
Item and XP sharing is limitied to a single party. Allowing two parties
to team up without sharing resources and XP.

Closes #1009

src/main/java/com/gmail/nossr50/commands/party/PartyCommand.java

@@ -14,6 +14,7 @@ import org.bukkit.util.StringUtil;
 
 import com.gmail.nossr50.mcMMO;
 import com.gmail.nossr50.commands.chat.PartyChatCommand;
+import com.gmail.nossr50.commands.party.alliance.PartyAllianceCommand;
 import com.gmail.nossr50.commands.party.teleport.PtpCommand;
 import com.gmail.nossr50.datatypes.player.McMMOPlayer;
 import com.gmail.nossr50.locale.LocaleLoader;
@@ -56,6 +57,7 @@ public class PartyCommand implements TabExecutor {
     private CommandExecutor partyHelpCommand           = new PartyHelpCommand();
     private CommandExecutor partyTeleportCommand       = mcMMO.p.getCommand("ptp").getExecutor();
     private CommandExecutor partyChatCommand           = new PartyChatCommand();
+    private CommandExecutor partyAllianceCommand       = new PartyAllianceCommand();
 
     @Override
     public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
@@ -150,6 +152,8 @@ public class PartyCommand implements TabExecutor {
                 return partyChangePasswordCommand.onCommand(sender, command, label, args);
             case RENAME:
                 return partyRenameCommand.onCommand(sender, command, label, args);
+            case ALLIANCE:
+                return partyAllianceCommand.onCommand(sender, command, label, args);
             default:
                 break;
         }

src/main/java/com/gmail/nossr50/commands/party/PartyInfoCommand.java

@@ -93,6 +93,10 @@ public class PartyInfoCommand implements CommandExecutor {
     private void displayPartyHeader(Player player, Party party) {
         player.sendMessage(LocaleLoader.getString("Commands.Party.Header"));
         player.sendMessage(LocaleLoader.getString("Commands.Party.Status", party.getName(), LocaleLoader.getString("Party.Status." + (party.isLocked() ? "Locked" : "Unlocked"))));
+
+        if (party.getAlly() != null) {
+            player.sendMessage(LocaleLoader.getString("Commands.Party.Status.Alliance", party.getAlly().getName()));
+        }
     }
 
     private void displayMemberInfo(Player player, McMMOPlayer mcMMOPlayer, Party party) {

src/main/java/com/gmail/nossr50/commands/party/PartySubcommandType.java

@@ -18,7 +18,8 @@ public enum PartySubcommandType {
     PASSWORD,
     RENAME,
     TELEPORT,
-    CHAT;
+    CHAT,
+    ALLIANCE;
 
     public static PartySubcommandType getSubcommand(String commandName) {
         for (PartySubcommandType command : values()) {
@@ -42,6 +43,9 @@ public enum PartySubcommandType {
         else if (commandName.equalsIgnoreCase("shareitem") || commandName.equalsIgnoreCase("shareitems")) {
             return ITEMSHARE;
         }
+        else if (commandName.equalsIgnoreCase("ally")) {
+            return ALLIANCE;
+        }
 
         return null;
     }

src/main/java/com/gmail/nossr50/commands/party/alliance/PartyAllianceAcceptCommand.java

@@ -0,0 +1,34 @@
+package com.gmail.nossr50.commands.party.alliance;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+import com.gmail.nossr50.datatypes.player.McMMOPlayer;
+import com.gmail.nossr50.locale.LocaleLoader;
+import com.gmail.nossr50.party.PartyManager;
+import com.gmail.nossr50.util.player.UserManager;
+
+public class PartyAllianceAcceptCommand implements CommandExecutor {
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
+        switch (args.length) {
+            case 2:
+                Player player = (Player) sender;
+                McMMOPlayer mcMMOPlayer = UserManager.getPlayer(player);
+
+                if (!mcMMOPlayer.hasPartyAllianceInvite()) {
+                    sender.sendMessage(LocaleLoader.getString("mcMMO.NoInvites"));
+                    return true;
+                }
+
+                PartyManager.acceptAllianceInvite(mcMMOPlayer);
+                return true;
+
+            default:
+                sender.sendMessage(LocaleLoader.getString("Commands.Usage.2", "party", "alliance", "accept"));
+                return true;
+        }
+    }
+}

src/main/java/com/gmail/nossr50/commands/party/alliance/PartyAllianceCommand.java

@@ -0,0 +1,156 @@
+package com.gmail.nossr50.commands.party.alliance;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+
+import org.bukkit.ChatColor;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.command.TabExecutor;
+import org.bukkit.entity.Player;
+import org.bukkit.util.StringUtil;
+
+import com.gmail.nossr50.mcMMO;
+import com.gmail.nossr50.config.Config;
+import com.gmail.nossr50.datatypes.party.Party;
+import com.gmail.nossr50.datatypes.player.McMMOPlayer;
+import com.gmail.nossr50.locale.LocaleLoader;
+import com.gmail.nossr50.util.commands.CommandUtils;
+import com.gmail.nossr50.util.player.UserManager;
+
+import com.google.common.collect.ImmutableList;
+
+public class PartyAllianceCommand implements TabExecutor {
+    private Player player;
+    private Party playerParty;
+    private Party targetParty;
+
+    public static final List<String> ALLIANCE_SUBCOMMANDS = ImmutableList.of("invite", "accept", "disband");
+
+    private CommandExecutor partyAllianceInviteCommand = new PartyAllianceInviteCommand();
+    private CommandExecutor partyAllianceAcceptCommand = new PartyAllianceAcceptCommand();
+    private CommandExecutor partyAllianceDisbandCommand = new PartyAllianceDisbandCommand();
+
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
+        if (CommandUtils.noConsoleUsage(sender)) {
+            return true;
+        }
+
+        player = (Player) sender;
+        McMMOPlayer mcMMOPlayer = UserManager.getPlayer(player);
+
+        playerParty = mcMMOPlayer.getParty();
+
+        switch (args.length) {
+            case 1:
+                if (playerParty.getLevel() < Config.getInstance().getPartyFeatureUnlockLevel(PartyFeature.ALLIANCE)) {
+                    sender.sendMessage(LocaleLoader.getString("Party.Feature.Disabled.3"));
+                    return true;
+                }
+
+                if (playerParty.getAlly() == null) {
+                    printUsage();
+                    return true;
+                }
+
+                targetParty = playerParty.getAlly();
+
+                displayPartyHeader();
+                displayMemberInfo();
+                return true;
+
+            case 2:
+            case 3:
+                if (playerParty.getLevel() < Config.getInstance().getPartyFeatureUnlockLevel(PartyFeature.ALLIANCE)) {
+                    sender.sendMessage(LocaleLoader.getString("Party.Feature.Disabled.3"));
+                    return true;
+                }
+
+                if (args[1].equalsIgnoreCase("invite")) {
+                    return partyAllianceInviteCommand.onCommand(sender, command, label, args);
+                }
+
+                if (args[1].equalsIgnoreCase("accept")) {
+                    return partyAllianceAcceptCommand.onCommand(sender, command, label, args);
+                }
+
+                if (args[1].equalsIgnoreCase("disband")) {
+                    return partyAllianceDisbandCommand.onCommand(sender, command, label, args);
+                }
+
+                if (playerParty.getAlly() == null) {
+                    printUsage();
+                    return true;
+                }
+
+                targetParty = playerParty.getAlly();
+
+                displayPartyHeader();
+                displayMemberInfo();
+                return true;
+
+            default:
+                return false;
+        }
+    }
+
+    private boolean printUsage() {
+        player.sendMessage(LocaleLoader.getString("Commands.Party.Alliance.Help.0"));
+        player.sendMessage(LocaleLoader.getString("Commands.Party.Alliance.Help.1"));
+        return true;
+    }
+
+    @Override
+    public List<String> onTabComplete(CommandSender commandSender, Command command, String label, String[] args) {
+        switch (args.length) {
+            case 1:
+                List<String> matches = StringUtil.copyPartialMatches(args[0], ALLIANCE_SUBCOMMANDS, new ArrayList<String>(ALLIANCE_SUBCOMMANDS.size()));
+
+                if (matches.size() == 0) {
+                    Set<String> playerNames = UserManager.getPlayerNames();
+                    return StringUtil.copyPartialMatches(args[0], playerNames, new ArrayList<String>(playerNames.size()));
+                }
+
+                return matches;
+            default:
+                return ImmutableList.of();
+        }
+    }
+
+    private void displayPartyHeader() {
+        player.sendMessage(LocaleLoader.getString("Commands.Party.Alliance.Header"));
+        player.sendMessage(LocaleLoader.getString("Commands.Party.Alliance.Ally", playerParty.getName(), targetParty.getName()));
+    }
+
+    private void displayMemberInfo() {
+        player.sendMessage(LocaleLoader.getString("Commands.Party.Alliance.Members.Header"));
+        player.sendMessage(createMembersList(playerParty));
+        player.sendMessage(ChatColor.DARK_GRAY + "----------------------------");
+        player.sendMessage(createMembersList(targetParty));
+    }
+
+    private String createMembersList(Party party) {
+        StringBuilder memberList = new StringBuilder();
+
+        for (String memberName : party.getMembers()) {
+            Player member = mcMMO.p.getServer().getPlayerExact(memberName);
+
+            if (party.getLeader().equalsIgnoreCase(memberName)) {
+                memberList.append(ChatColor.GOLD);
+            }
+            else if (member != null) {
+                memberList.append(ChatColor.WHITE);
+            }
+            else {
+                memberList.append(ChatColor.GRAY);
+            }
+
+            memberList.append(memberName).append(" ");
+        }
+
+        return memberList.toString();
+    }
+}

src/main/java/com/gmail/nossr50/commands/party/alliance/PartyAllianceDisbandCommand.java

@@ -0,0 +1,36 @@
+package com.gmail.nossr50.commands.party.alliance;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+import com.gmail.nossr50.datatypes.party.Party;
+import com.gmail.nossr50.datatypes.player.McMMOPlayer;
+import com.gmail.nossr50.locale.LocaleLoader;
+import com.gmail.nossr50.party.PartyManager;
+import com.gmail.nossr50.util.player.UserManager;
+
+public class PartyAllianceDisbandCommand implements CommandExecutor {
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
+        switch (args.length) {
+            case 2:
+                Player player = (Player) sender;
+                McMMOPlayer mcMMOPlayer = UserManager.getPlayer(player);
+                Party party = mcMMOPlayer.getParty();
+
+                if (party.getAlly() == null) {
+                    sender.sendMessage(LocaleLoader.getString("Commands.Party.Alliance.None"));
+                    return true;
+                }
+
+                PartyManager.disbandAlliance(player, party, party.getAlly());
+                return true;
+
+            default:
+                sender.sendMessage(LocaleLoader.getString("Commands.Usage.2", "party", "alliance", "disband"));
+                return true;
+        }
+    }
+}

src/main/java/com/gmail/nossr50/commands/party/alliance/PartyAllianceInviteCommand.java

@@ -0,0 +1,72 @@
+package com.gmail.nossr50.commands.party.alliance;
+
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandExecutor;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+import com.gmail.nossr50.datatypes.party.Party;
+import com.gmail.nossr50.datatypes.player.McMMOPlayer;
+import com.gmail.nossr50.locale.LocaleLoader;
+import com.gmail.nossr50.party.PartyManager;
+import com.gmail.nossr50.util.Misc;
+import com.gmail.nossr50.util.commands.CommandUtils;
+import com.gmail.nossr50.util.player.UserManager;
+
+public class PartyAllianceInviteCommand implements CommandExecutor {
+    @Override
+    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
+        switch (args.length) {
+            case 3:
+                String targetName = CommandUtils.getMatchedPlayerName(args[2]);
+                McMMOPlayer mcMMOTarget = UserManager.getPlayer(targetName, true);
+
+                if (!CommandUtils.checkPlayerExistence(sender, targetName, mcMMOTarget)) {
+                    return false;
+                }
+
+                Player target = mcMMOTarget.getPlayer();
+                Player player = (Player) sender;
+                McMMOPlayer mcMMOPlayer = UserManager.getPlayer(player);
+                String playerName = player.getName();
+
+                if (player.equals(target)) {
+                    sender.sendMessage(LocaleLoader.getString("Party.Invite.Self"));
+                    return true;
+                }
+
+                if (!mcMMOTarget.inParty()) {
+                    player.sendMessage(LocaleLoader.getString("Party.PlayerNotInParty", targetName));
+                    return true;
+                }
+
+                if (PartyManager.inSameParty(player, target)) {
+                    sender.sendMessage(LocaleLoader.getString("Party.Player.InSameParty", targetName));
+                    return true;
+                }
+
+                if (!mcMMOTarget.getParty().getLeader().equalsIgnoreCase(targetName)) {
+                    player.sendMessage(LocaleLoader.getString("Party.Target.NotOwner", targetName));
+                    return true;
+                }
+
+                Party playerParty = mcMMOPlayer.getParty();
+
+                if (playerParty.getAlly() != null) {
+                    player.sendMessage(LocaleLoader.getString("Commands.Party.Alliance.AlreadyAllies"));
+                    return true;
+                }
+
+                mcMMOTarget.setPartyAllianceInvite(playerParty);
+
+                sender.sendMessage(LocaleLoader.getString("Commands.Invite.Success"));
+                target.sendMessage(LocaleLoader.getString("Commands.Party.Alliance.Invite.0", playerParty.getName(), playerName));
+                target.sendMessage(LocaleLoader.getString("Commands.Party.Alliance.Invite.1"));
+                return true;
+
+            default:
+                sender.sendMessage(LocaleLoader.getString("Commands.Usage.3", "party", "alliance", "invite", "<" + LocaleLoader.getString("Commands.Usage.Player") + ">"));
+                return true;
+        }
+    }
+}