Now works on Spigot... With a caveat...

• RestocksToday is now a Paper-Only feature. Everything else is not so now Spigot can use those.
• Main Class reorganized a bit.
• Added VillagerInfo.isPaper boolean for Paper-Only Features.
• Plugin will notify the console if VillagerInfo is not running on Paper or a Paper Fork.
• config.yml updated with a note about "Number of Restocks" setting.
• Don't be mad, I removed NotNull Annotations from onCommand. ;-;

Author: Peashooter101

.gitignore

@@ -111,3 +111,4 @@ buildNumber.properties
 
 # Common working directory
 run/
+src/main/java/META-INF/MANIFEST.MF

pom.xml

@@ -54,20 +54,16 @@
 
     <repositories>
         <repository>
-            <id>papermc-repo</id>
+            <id>papermc</id>
             <url>https://papermc.io/repo/repository/maven-public/</url>
         </repository>
-        <repository>
-            <id>sonatype</id>
-            <url>https://oss.sonatype.org/content/groups/public/</url>
-        </repository>
     </repositories>
 
     <dependencies>
         <dependency>
             <groupId>io.papermc.paper</groupId>
             <artifactId>paper-api</artifactId>
-            <version>1.17.1-R0.1-SNAPSHOT</version>
+            <version>1.18.1-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
     </dependencies>

src/main/java/adhdmc/villagerinfo/VillagerHandler.java

@@ -1,6 +1,7 @@
 package adhdmc.villagerinfo;
 
 import org.bukkit.Location;
+import org.bukkit.NamespacedKey;
 import org.bukkit.Sound;
 import org.bukkit.entity.*;
 import org.bukkit.entity.memory.MemoryKey;
@@ -36,7 +37,7 @@ public void onVillagerClick(PlayerInteractEntityEvent event) {
         //Profession
         String villagerProfession = villagerClicked.getProfession().toString();
         //Restocks
-        int villagerRestocks = villagerClicked.getRestocksToday();
+        int villagerRestocks = VillagerInfo.isPaper ? villagerClicked.getRestocksToday() : Integer.MIN_VALUE;
         //Job Site
         Location villagerJobSite = villagerClicked.getMemory(MemoryKey.JOB_SITE);
         //Worked
@@ -55,6 +56,7 @@ public void onVillagerClick(PlayerInteractEntityEvent event) {
         boolean configHome = VillagerInfo.plugin.getConfig().getBoolean("Bed Location");
         boolean configLastSlept = VillagerInfo.plugin.getConfig().getBoolean("Last Slept");
         boolean configInventory = VillagerInfo.plugin.getConfig().getBoolean("Villager Inventory Contents");
+        boolean debugData = true;
         //Prefix
         String villInfoPrefix = MessageHandler.prefix;
 
@@ -148,7 +150,7 @@ public void onVillagerClick(PlayerInteractEntityEvent event) {
         }
 
         //Restocks
-        if(configRestocks) {
+        if(configRestocks && villagerRestocks != Integer.MIN_VALUE) {
             player.sendMessage(GREEN + "RESTOCKS TODAY:\n  " + AQUA + "• " + villagerRestocks);
         }
 

src/main/java/adhdmc/villagerinfo/VillagerInfo.java

@@ -1,17 +1,36 @@
 package adhdmc.villagerinfo;
 
 import adhdmc.villagerinfo.commands.CommandHandler;
+import org.bukkit.Bukkit;
+import org.bukkit.ChatColor;
 import org.bukkit.plugin.java.JavaPlugin;
 
 import java.util.Objects;
 
 public final class VillagerInfo extends JavaPlugin {
     public static VillagerInfo plugin;
+    public static boolean isPaper;
     @Override
     public void onEnable(){
         plugin = this;
         getServer().getPluginManager().registerEvents(new VillagerHandler(), this);
         Objects.requireNonNull(this.getCommand("vill")).setExecutor(new CommandHandler());
+        configDefaults();
+        MessageHandler.loadConfigMsgs();
+        paperCheck();
+    }
+
+    private void paperCheck() {
+        try {
+            Class.forName("com.destroystokyo.paper.VersionHistoryManager$VersionData");
+            isPaper = true;
+        } catch (ClassNotFoundException e) {
+            isPaper = false;
+            Bukkit.getConsoleSender().sendMessage(ChatColor.YELLOW + "[VillagerInfo] This version does not run on Paper, some features may be disabled.");
+        }
+    }
+
+    private void configDefaults() {
         this.saveDefaultConfig();
         getConfig().addDefault("Profession", true);
         getConfig().addDefault("Job Site", true);
@@ -26,6 +45,5 @@ public void onEnable(){
         getConfig().addDefault("No Permission", "&cYou don't have permission to use this command!");
         getConfig().addDefault("No Command", "&cNo subcommand by that name!");
         getConfig().addDefault("Config Reload", "&6VillagerInfo Config Reloaded!");
-        MessageHandler.loadConfigMsgs();
     }
 }

src/main/java/adhdmc/villagerinfo/commands/CommandHandler.java

@@ -9,7 +9,6 @@
 import org.bukkit.command.CommandSender;
 import org.bukkit.command.TabExecutor;
 import org.bukkit.entity.Player;
-import org.jetbrains.annotations.NotNull;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -30,7 +29,7 @@ public List<String> onTabComplete(CommandSender sender, Command command, String
 
 
     @Override
-    public boolean onCommand(@NotNull CommandSender sender, @NotNull Command cmd, @NotNull String label, String[] args) {
+    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args) {
         Player user;
         //checking if player, error if not
         if (sender instanceof Player) {

src/main/resources/config.yml

@@ -8,7 +8,7 @@ Job Site: true
 
 Last Worked: true
 
-Number of Restocks: true
+Number of Restocks: true # This only works on Paper or Paper Forks.
 
 Bed Location: true