Prototype code for /mail to get sent via Discord

Essentials/pom.xml

@@ -76,6 +76,12 @@
             <version>1.1.3</version>
         </dependency>
 
+        <dependency>
+            <groupId>com.johnymuffin.beta</groupId>
+            <artifactId>discordauth</artifactId>
+            <version>1.1.3</version>
+        </dependency>
+
         <dependency>
             <groupId>net.dv8tion</groupId>
             <artifactId>JDA</artifactId>

Essentials/src/main/java/com/earth2me/essentials/EssentialsPlayerListener.java

@@ -208,6 +208,8 @@ public void onPlayerJoin(final PlayerJoinEvent event) {
         ess.getBackup().onPlayerJoin();
         final User user = ess.getUser(event.getPlayer());
 
+        user.setUUUID(event.getPlayer().getUniqueId()); // Set the UUID of the player
+
         //we do not know the ip address on playerlogin so we need to do this here.
         if (user.isIpBanned()) {
             final String banReason = user.getBanReason();

Essentials/src/main/java/com/earth2me/essentials/UserData.java

@@ -5,11 +5,9 @@
 import org.bukkit.entity.Player;
 import org.bukkit.inventory.ItemStack;
 
+import javax.annotation.Nullable;
 import java.io.File;
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
 import java.util.logging.Logger;
 
 
@@ -41,6 +39,9 @@ public abstract class UserData extends PlayerExtension implements IConf {
     private boolean isSocialSpyEnabled;
     private boolean isNPC;
 
+    private UUID uuid;
+    private boolean receiveMailOnDiscord;
+
     protected UserData(Player base, IEssentials ess) {
         super(base, ess);
         File folder = new File(ess.getDataFolder(), "userdata");
@@ -77,6 +78,8 @@ public final void reloadConfig() {
         geolocation = _getGeoLocation();
         isSocialSpyEnabled = _isSocialSpyEnabled();
         isNPC = _isNPC();
+        uuid = _getUUID();
+        receiveMailOnDiscord = _getReceiveMailOnDiscord();
     }
 
     private double _getMoney() {
@@ -617,4 +620,48 @@ public void setNPC(boolean set) {
         config.setProperty("npc", set);
         config.save();
     }
+
+    public void setUUUID(UUID uuid) {
+        this.uuid = uuid;
+        config.setProperty("uuid", uuid.toString());
+        config.save();
+    }
+
+    @Nullable
+    private UUID _getUUID() {
+        String uuid = config.getString("uuid");
+        if (uuid == null) {
+            return null;
+        }
+
+        try {
+            return UUID.fromString(uuid);
+        } catch (IllegalArgumentException e) {
+            logger.warning("Invalid UUID in user data for " + getName() + ": " + uuid + ". UUID will be removed.");
+            config.removeProperty("uuid");
+            config.save();
+        }
+
+        return null;
+    }
+
+    @Nullable
+    public UUID getUUID() {
+        return uuid;
+    }
+
+    private boolean _getReceiveMailOnDiscord() {
+        return config.getBoolean("receiveMailOnDiscord", true); // Default to true
+    }
+
+    public boolean getReceiveMailOnDiscord() {
+        return receiveMailOnDiscord;
+    }
+
+    public void setReceiveMailOnDiscord(boolean receiveMailOnDiscord) {
+        this.receiveMailOnDiscord = receiveMailOnDiscord;
+        config.setProperty("receiveMailOnDiscord", receiveMailOnDiscord);
+        config.save();
+    }
+
 }

Essentials/src/main/java/com/earth2me/essentials/commands/Commandmail.java

@@ -2,11 +2,18 @@
 
 import com.earth2me.essentials.User;
 import com.earth2me.essentials.Util;
+import com.johnymuffin.beta.discordauth.DiscordAuthentication;
+import com.johnymuffin.discordcore.DiscordCore;
+import com.johnymuffin.essentials.ESSAdvConfig;
+import net.dv8tion.jda.api.EmbedBuilder;
+import net.dv8tion.jda.api.JDA;
+import org.bukkit.Bukkit;
 import org.bukkit.ChatColor;
 import org.bukkit.Server;
 import org.bukkit.entity.Player;
 
 import java.util.List;
+import java.util.UUID;
 
 
 public class Commandmail extends EssentialsCommand {
@@ -41,8 +48,21 @@ public void run(Server server, User user, String commandLabel, String[] args) th
             if (u == null) {
                 throw new Exception(Util.format("playerNeverOnServer", args[1]));
             }
+
             if (!u.isIgnoredPlayer(user.getName())) {
                 u.addMail(ChatColor.stripColor(user.getDisplayName()) + ": " + getFinalArg(args, 2));
+
+                // Send to user on Discord if they are linked
+                boolean forwardToDiscord = ESSAdvConfig.getInstance().getConfigBoolean("settings.mail.send-to-discord.enabled");
+                if (forwardToDiscord && Bukkit.getPluginManager().isPluginEnabled("DiscordAuthentication") && Bukkit.getPluginManager().isPluginEnabled("DiscordCore")) {
+                    try {
+                        forwardMailToDiscord(user, u, args);
+                    } catch (Exception e) {
+                        System.out.println("Failed to forward mail to Discord for " + u.getName() + ".");
+                        e.printStackTrace();
+                    }
+                }
+
             }
             user.sendMessage(Util.i18n("mailSent"));
             return;
@@ -51,6 +71,73 @@ public void run(Server server, User user, String commandLabel, String[] args) th
             user.setMails(null);
             throw new Exception(Util.i18n("mailCleared"));
         }
+
+        if(args.length == 1 && "discord".equalsIgnoreCase(args[0])) {
+            if (!user.isAuthorized("essentials.mail.discord")) {
+                throw new Exception(Util.i18n("noMailDiscordPerm"));
+            }
+            user.setReceiveMailOnDiscord(!user.getReceiveMailOnDiscord());
+            boolean receiveMailOnDiscord = user.getReceiveMailOnDiscord();
+            user.sendMessage(Util.i18n(receiveMailOnDiscord ? "mailDiscordEnabled" : "mailDiscordDisabled"));
+            return;
+        }
+
         throw new NotEnoughArgumentsException();
     }
+
+    private void forwardMailToDiscord(User sender, User recipient, String[] args) {
+        if (recipient.isOnline()) {
+            System.out.println("Skipping mail forwarding to Discord for " + recipient.getName() + ": Recipient is online.");
+            return;
+        }
+        // Check recipient has received mail before forwarding
+        if (!recipient.getReceiveMailOnDiscord()) {
+            System.out.println("Skipping mail forwarding to Discord for " + recipient.getName() + ": Recipient has disabled mail forwarding.");
+            return;
+        }
+
+        System.out.println("Forwarding mail to Discord for " + recipient.getName());
+        DiscordAuthentication plugin = (DiscordAuthentication) Bukkit.getPluginManager().getPlugin("DiscordAuthentication");
+        String targetUsername = recipient.getName();
+        UUID targetUUID = recipient.getUUID();
+
+        if (targetUUID != null) {
+            String discordID = plugin.getData().getDiscordIDFromUUID(String.valueOf(targetUUID));
+
+            if (discordID != null) {
+                System.out.println("Sending mail to " + targetUsername + " on Discord with ID: " + discordID);
+                DiscordCore discordCore = (DiscordCore) Bukkit.getPluginManager().getPlugin("DiscordCore");
+                JDA jda = discordCore.getDiscordBot().getJda();
+
+                jda.retrieveUserById(discordID).queue(discordUser -> {
+                    if (discordUser != null) {
+                        discordUser.openPrivateChannel().queue(privateChannel -> {
+                            EmbedBuilder embedBuilder = new EmbedBuilder();
+                            embedBuilder.setAuthor(sender.getDisplayName(), null, "https://skins.legacyminecraft.com/avatars/" + sender.getBase().getUniqueId());
+                            embedBuilder.setTitle("Forwarded Mail from Minecraft Server");
+                            embedBuilder.setDescription("You have received a new mail message on the Minecraft server from " + sender.getDisplayName() + ".\n\n**Message:**\n" + getFinalArg(args, 2) + "\n\n*Note: You can use `/mail discord` in-game to toggle receiving mail via Discord.*");
+                            embedBuilder.setFooter("Essentials (RetroMC fork) - Mail Command", "https://wiki.retromc.org/images/1/1a/Retromcnew.png");
+                            embedBuilder.setColor(0x00FF00);
+                            privateChannel.sendMessage(embedBuilder.build()).queue();
+
+                            Bukkit.getScheduler().callSyncMethod(ess, () -> {
+                                sender.sendMessage(Util.format("mailSentDiscord", discordUser.getAsTag()));
+                                return null;
+                            });
+                        }, throwable -> {
+                            System.out.println("Failed to send a message to user with Discord ID: " + discordID + ". Reason: " + throwable.getMessage());
+                        });
+                    } else {
+                        System.out.println("User with Discord ID " + discordID + " could not be found in any mutual guild.");
+                    }
+                }, throwable -> {
+                    System.out.println("Failed to retrieve user with Discord ID: " + discordID + ". Reason: " + throwable.getMessage());
+                });
+            } else {
+                System.out.println("Failed to send mail to " + targetUsername + " on Discord: No Discord ID found.");
+            }
+        } else {
+            System.out.println("Failed to send mail to " + targetUsername + " on Discord: No UUID found in Essentials data.");
+        }
+    }
 }

Essentials/src/main/java/com/johnymuffin/essentials/ESSAdvConfig.java

@@ -38,6 +38,9 @@ private void write() {
         generateConfigOption("discord.channel-id", "0");
 
 
+        generateConfigOption("settings.mail.send-to-discord.enabled", false);
+        generateConfigOption("settings.mail.send-to-discord.info", "This will send mail that a player receives to them via Discord if they have linked their account with Discord Authentication Core.");
+
     }
 
     private void generateConfigOption(String key, Object defaultValue) {

Essentials/src/main/resources/examples/bpermissions.yml

@@ -26,6 +26,7 @@ groups:
     - essentials.kit.tools
     - essentials.mail
     - essentials.mail.send
+    - essentials.mail.discord
     - essentials.me
     - essentials.msg
     - essentials.nick

Essentials/src/main/resources/examples/permissionsbukkit.yml

@@ -34,6 +34,7 @@ groups:
             essentials.kit.tools: true
             essentials.mail: true
             essentials.mail.send: true
+            essentials.mail.discord: true
             essentials.me: true
             essentials.msg: true
             essentials.nick: true

Essentials/src/main/resources/examples/permissionsex.yml

@@ -32,6 +32,7 @@ groups:
         - essentials.kit.tools
         - essentials.mail
         - essentials.mail.send
+        - essentials.mail.discord
         - essentials.me
         - essentials.msg
         - essentials.nick

Essentials/src/main/resources/messages.properties

@@ -360,3 +360,7 @@ year = year
 years = years
 youAreHealed = \u00a77You have been healed.
 youHaveNewMail = \u00a7cYou have {0} messages!\u00a7f Type \u00a77/mail read\u00a7f to view your mail.
+mailSentDiscord = \u00a77Mail sent to {0} via Discord.
+mailDiscordEnabled = \u00a77You will now receive mail on Discord.
+mailDiscordDisabled = \u00a77You will no longer receive mail on Discord.
+noMailDiscordPerm = \u00a7cYou do not have permission to alter Discord mail settings.

Essentials/src/main/resources/messages_da.properties

@@ -358,3 +358,4 @@ year = \u00e5r
 years = \u00e5r
 youAreHealed = \u00a77Du er blevet helbredt.
 youHaveNewMail = \u00a7cDu har {0} beskeder!\u00a7f Type \u00a77/post l\u00e6s\u00a7f for at se din post.
+mailSentDiscord = \u00a77Mail sent to {0} via Discord.

Essentials/src/main/resources/messages_de.properties

@@ -358,3 +358,4 @@ year = Jahr
 years = Jahre
 youAreHealed = \u00a77Du wurdest geheilt.
 youHaveNewMail = \u00a7cDu hast {0} Nachrichten!\u00a7f Schreibe \u00a77/mail read\u00a7f um deine Nachrichten anzuzeigen.
+mailSentDiscord = \u00a77Mail sent to {0} via Discord.

Essentials/src/main/resources/messages_en.properties

@@ -360,3 +360,4 @@ year = year
 years = years
 youAreHealed = \u00a77You have been healed.
 youHaveNewMail = \u00a7cYou have {0} messages!\u00a7f Type \u00a77/mail read\u00a7f to view your mail.
+mailSentDiscord = \u00a77Mail sent to {0} via Discord.

Essentials/src/main/resources/messages_fr.properties

@@ -358,3 +358,4 @@ year = ann\u00e9e
 years = ann\u00e9es
 youAreHealed = \u00a77Vous avez \u00e9t\u00e9 soign\u00e9.
 youHaveNewMail = \u00a7cVous avez {0} messages! \u00a7fEntrez \u00a77/mail read\u00a7f pour voir votre courrier.
+mailSentDiscord = \u00a77Mail sent to {0} via Discord.

Essentials/src/main/resources/messages_nl.properties

@@ -358,3 +358,4 @@ year = jaar
 years = jaren
 youAreHealed = \u00a77Je bent genezen.
 youHaveNewMail = \u00a7cJe hebt {0} berichten!\u00a7f Type \u00a77/mail read\u00a7f om je berichten te bekijken.
+mailSentDiscord = \u00a77Mail sent to {0} via Discord.

Essentials/src/main/resources/plugin.yml

@@ -183,7 +183,7 @@ commands:
     usage: /<command> [warp]
   mail:
     description: Manages inter-player, intra-server mail.
-    usage: /<command> [read|clear|send [to] [message]]
+    usage: /<command> [read|clear|send|discord] [to] [message]
     aliases: [email]
   me:
     description: Describes an action in the context of the player.