Discord: Add PAPI support to avatar-url (#6189)

Closes #6160

Author: JRoy

EssentialsDiscord/src/main/java/net/essentialsx/discord/util/DiscordUtil.java

@@ -219,7 +219,14 @@ public static boolean matchesRole(Role role, String roleDefinition) {
     }
 
     public static String getAvatarUrl(final JDADiscordService jda, final Player player) {
-        return jda.getSettings().getAvatarURL().replace("{uuid}", player.getUniqueId().toString()).replace("{name}", player.getName());
+        final String format = jda.getSettings().getAvatarURL();
+        final String filled;
+        if (jda.getPlugin().isPAPI() && format != null) {
+            filled = me.clip.placeholderapi.PlaceholderAPI.setPlaceholders(player, format);
+        } else {
+            filled = format;
+        }
+        return filled.replace("{uuid}", player.getUniqueId().toString()).replace("{name}", player.getName());
     }
 
     public static void dispatchDiscordMessage(final JDADiscordService jda, final MessageType messageType, final String message, final boolean allowPing, final String avatarUrl, final String name, final UUID uuid) {

EssentialsDiscord/src/main/resources/config.yml

@@ -22,7 +22,7 @@ discord-url: "https://discord.gg/invite-code"
 
 # Defined text channels
 # =====================
-# 
+#
 # Channels defined here can be used for two different purposes:
 #
 # Firstly, channels defined here can be used to give players permission to see messages from said channel.
@@ -163,6 +163,7 @@ show-avatar: false
 # Any URL in here should only return a proper JPEG/PNG image and nothing else.
 # To include the UUID of the player in this URL, use "{uuid}".
 # To include the name of the player in this URL, use "{name}".
+# ... PlaceholderAPI placeholders are also supported here too!
 avatar-url: "https://crafthead.net/helm/{uuid}"
 
 # Whether or not fake join and leave messages should be sent to Discord when a player toggles vanish in Minecraft.