Add support for Paper/Spigot 1.8.8+

- Target Java 8 instead of Java 17
- Use Spigot API 1.8.8-R0.1-SNAPSHOT instead of Paper 1.20.4
- Remove Adventure API (net.kyori), use ChatColor.translateAlternateColorCodes
- Remove Java 16 pattern matching instanceof in VerifyCommand
- Replace Bukkit.getMinecraftVersion() with getBukkitVersion() (1.8.8 compat)
- Remove api-version from plugin.yml (not supported before 1.13)

Author: TerminalKyle

pom.xml

@@ -14,24 +14,24 @@
     <url>https://mcsets.com</url>
 
     <properties>
-        <maven.compiler.source>17</maven.compiler.source>
-        <maven.compiler.target>17</maven.compiler.target>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
     <repositories>
         <repository>
-            <id>papermc</id>
-            <url>https://repo.papermc.io/repository/maven-public/</url>
+            <id>spigotmc</id>
+            <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
         </repository>
     </repositories>
 
     <dependencies>
-        <!-- Paper API -->
+        <!-- Spigot API (1.8.8+) -->
         <dependency>
-            <groupId>io.papermc.paper</groupId>
-            <artifactId>paper-api</artifactId>
-            <version>1.20.4-R0.1-SNAPSHOT</version>
+            <groupId>org.spigotmc</groupId>
+            <artifactId>spigot-api</artifactId>
+            <version>1.8.8-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
 
@@ -84,8 +84,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.11.0</version>
                 <configuration>
-                    <source>17</source>
-                    <target>17</target>
+                    <source>8</source>
+                    <target>8</target>
                 </configuration>
             </plugin>
             <plugin>

src/main/java/com/mcsets/setstore/SetStorePlugin.java

@@ -142,7 +142,7 @@ public void connect() {
 
         String serverIp = pluginConfig.getServerIp();
         int serverPort = pluginConfig.getServerPort();
-        String serverVersion = Bukkit.getMinecraftVersion();
+        String serverVersion = Bukkit.getBukkitVersion().split("-")[0];
         List<String> onlinePlayers = getOnlinePlayerNames();
 
         try {

src/main/java/com/mcsets/setstore/commands/VerifyCommand.java

@@ -39,11 +39,13 @@ public VerifyCommand(SetStorePlugin plugin) {
 
     @Override
     public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
-        if (!(sender instanceof Player player)) {
+        if (!(sender instanceof Player)) {
             sender.sendMessage(plugin.getPluginConfig().formatMessage("&cThis command can only be used by players!"));
             return true;
         }
 
+        final Player player = (Player) sender;
+
         if (!player.hasPermission("mcsets.verify")) {
             player.sendMessage(plugin.getPluginConfig().getMessage("no-permission"));
             return true;

src/main/java/com/mcsets/setstore/config/PluginConfig.java

@@ -10,8 +10,7 @@
 package com.mcsets.setstore.config;
 
 import com.mcsets.setstore.SetStorePlugin;
-import net.kyori.adventure.text.Component;
-import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
+import org.bukkit.ChatColor;
 import org.bukkit.configuration.file.FileConfiguration;
 
 /**
@@ -139,12 +138,12 @@ public String getMessagePrefix() {
         return config.getString("messages.prefix", "&8[&bSetStore&8] &7");
     }
 
-    public Component getMessage(String key) {
+    public String getMessage(String key) {
         String message = config.getString("messages." + key, "");
         return formatMessage(getMessagePrefix() + message);
     }
 
-    public Component getMessage(String key, String... replacements) {
+    public String getMessage(String key, String... replacements) {
         String message = config.getString("messages." + key, "");
         String fullMessage = getMessagePrefix() + message;
 
@@ -157,8 +156,8 @@ public Component getMessage(String key, String... replacements) {
         return formatMessage(fullMessage);
     }
 
-    public Component formatMessage(String message) {
-        return LegacyComponentSerializer.legacyAmpersand().deserialize(message);
+    public String formatMessage(String message) {
+        return ChatColor.translateAlternateColorCodes('&', message);
     }
 
     // ==================== Logging Settings ====================

src/main/resources/plugin.yml

@@ -1,7 +1,6 @@
 name: MCSetsSetStore
 version: ${project.version}
 main: com.mcsets.setstore.SetStorePlugin
-api-version: '1.20'
 description: MCSets SetStore integration for automatic purchase delivery
 author: MCSets
 website: https://mcsets.com