prepare generic command

src/main/kotlin/io/delilaheve/CustomAnvil.kt

@@ -6,6 +6,7 @@ import org.bukkit.configuration.file.YamlConfiguration
 import org.bukkit.plugin.java.JavaPlugin
 import xyz.alexcrea.cuanvil.api.event.CAConfigReadyEvent
 import xyz.alexcrea.cuanvil.api.event.CAEnchantRegistryReadyEvent
+import xyz.alexcrea.cuanvil.command.CustomAnvilCmd
 import xyz.alexcrea.cuanvil.command.EditConfigExecutor
 import xyz.alexcrea.cuanvil.command.ReloadExecutor
 import xyz.alexcrea.cuanvil.config.ConfigHolder
@@ -290,6 +291,8 @@ open class CustomAnvil : JavaPlugin() {
 
         command = getCommand(commandConfigName)
         command?.setExecutor(EditConfigExecutor())
+
+        CustomAnvilCmd(this)
     }
 
 }

src/main/kotlin/xyz/alexcrea/cuanvil/command/CASubCommand.kt

@@ -0,0 +1,40 @@
+package xyz.alexcrea.cuanvil.command
+
+import org.bukkit.ChatColor
+import org.bukkit.command.Command
+import org.bukkit.command.CommandExecutor
+import org.bukkit.command.CommandSender
+
+abstract class CASubCommand: CommandExecutor {
+
+    private var alreadySaid = false;
+    override fun onCommand(
+        sender: CommandSender,
+        cmd: Command,
+        cmdstr: String,
+        args: Array<out String>
+    ): Boolean {
+        if(!alreadySaid){
+            sender.sendMessage(ChatColor.RED.toString() +
+                    "Please not that this command will be replaced as a subcommand of `/customanvil`")
+            alreadySaid = true
+        }
+
+        return executeCommand(sender, cmd, cmdstr, args)
+    }
+
+    abstract fun executeCommand(
+        sender: CommandSender,
+        cmd: Command,
+        cmdstr: String,
+        args: Array<out String>): Boolean
+
+    open fun allowed(sender: CommandSender): Boolean {
+        return true
+    }
+
+    open fun tabCompleter(list: MutableList<String>) {
+
+    }
+
+}

src/main/kotlin/xyz/alexcrea/cuanvil/command/CustomAnvilCmd.kt

@@ -0,0 +1,77 @@
+package xyz.alexcrea.cuanvil.command
+
+import com.google.common.collect.ImmutableMap
+import io.delilaheve.CustomAnvil
+import org.bukkit.command.Command
+import org.bukkit.command.CommandExecutor
+import org.bukkit.command.CommandSender
+import org.bukkit.command.TabCompleter
+import java.util.ArrayList
+import java.util.Arrays
+
+class CustomAnvilCmd(plugin: CustomAnvil) : CommandExecutor, TabCompleter {
+
+    // Name of the generic command
+    companion object {
+        private const val genericCommandName = "customanvil"
+    }
+
+    private val editConfigCommand = EditConfigExecutor()
+    private val commands: ImmutableMap<String, CASubCommand>
+
+    init {
+        commands = ImmutableMap.of<String, CASubCommand>(
+            "gui", editConfigCommand,
+            "reload", ReloadExecutor()
+        )
+
+        val self = plugin.getCommand(genericCommandName)!!
+        self.setExecutor(this)
+        self.tabCompleter = this
+    }
+
+    override fun onCommand(
+        sender: CommandSender,
+        cmd: Command,
+        cmdstr: String,
+        args: Array<out String>
+    ): Boolean {
+        // Find sub command to execute based on the provided command name
+        val subcmd: CASubCommand? = if(args.isEmpty()) {
+            editConfigCommand
+        }else {
+            commands[args[0].lowercase()]
+        }
+
+        if(subcmd == null) {
+            sender.sendMessage("Invalid subcommand. run `$cmdstr help` to see available commands")
+            return true
+        }
+
+        val newargs = args.copyOfRange(1, args.size)
+        return subcmd.executeCommand(sender, cmd, cmdstr, newargs)
+    }
+
+    override fun onTabComplete(
+        sender: CommandSender,
+        cmd: Command,
+        cmdstr: String,
+        args: Array<out String>
+    ): MutableList<String> {
+        val result = ArrayList<String>()
+        if(args.isEmpty()) {
+            for (cmd in commands) {
+                result.add(cmd.key)
+            }
+        } else {
+            val subcmd = commands[args[0].lowercase()]
+            subcmd?.tabCompleter(result)
+        }
+
+        //assumed all provided tab completed string are lowercase
+        return result.stream()
+            .filter { it.startsWith(args[args.size - 1]) }
+            .sorted()
+            .toList()
+    }
+}

src/main/kotlin/xyz/alexcrea/cuanvil/command/EditConfigExecutor.kt

@@ -2,17 +2,21 @@ package xyz.alexcrea.cuanvil.command
 
 import io.delilaheve.CustomAnvil
 import org.bukkit.command.Command
-import org.bukkit.command.CommandExecutor
 import org.bukkit.command.CommandSender
 import org.bukkit.entity.HumanEntity
 import xyz.alexcrea.cuanvil.dependency.util.PlatformUtil
 import xyz.alexcrea.cuanvil.gui.config.MainConfigGui
 import xyz.alexcrea.cuanvil.gui.util.GuiGlobalActions
 
-class EditConfigExecutor : CommandExecutor {
+class EditConfigExecutor: CASubCommand() {
 
-    override fun onCommand(sender: CommandSender, command: Command, label: String, args: Array<out String>): Boolean {
-        if (!sender.hasPermission(CustomAnvil.editConfigPermission)) {
+    override fun executeCommand(sender: CommandSender,
+                                cmd: Command,
+                                cmdstr: String,
+                                args: Array<out String>): Boolean {
+        if (sender !is HumanEntity) return false
+
+        if (!allowed(sender)) {
             sender.sendMessage(GuiGlobalActions.NO_EDIT_PERM)
             return false
         }
@@ -25,10 +29,13 @@ class EditConfigExecutor : CommandExecutor {
             return false
         }
 
-        if (sender !is HumanEntity) return false
         MainConfigGui.getInstance().show(sender)
 
         return true
     }
 
+    override fun allowed(sender: CommandSender): Boolean {
+        return sender.hasPermission(CustomAnvil.editConfigPermission)
+    }
+
 }

src/main/kotlin/xyz/alexcrea/cuanvil/command/ReloadExecutor.kt

@@ -11,9 +11,13 @@ import xyz.alexcrea.cuanvil.dependency.DependencyManager
 import xyz.alexcrea.cuanvil.gui.config.global.*
 import xyz.alexcrea.cuanvil.update.UpdateHandler
 
-class ReloadExecutor : CommandExecutor {
-    override fun onCommand(sender: CommandSender, cmd: Command, cmdstr: String, args: Array<out String>): Boolean {
-        if (!sender.hasPermission(CustomAnvil.commandReloadPermission)) {
+class ReloadExecutor : CASubCommand() {
+
+    override fun executeCommand(sender: CommandSender,
+                           cmd: Command,
+                           cmdstr: String,
+                           args: Array<out String>): Boolean {
+        if (!allowed(sender)) {
             sender.sendMessage("§cYou do not have permission to reload the config")
             return false
         }
@@ -31,6 +35,10 @@ class ReloadExecutor : CommandExecutor {
         return commandSuccess
     }
 
+    override fun allowed(sender: CommandSender): Boolean {
+        return sender.hasPermission(CustomAnvil.commandReloadPermission)
+    }
+
     /**
      * Execute the command, return true if success or false otherwise
      */

src/main/resources/plugin.yml

@@ -10,6 +10,8 @@ authors: [ DelilahEve, alexcrea ]
 libraries: [${libraries}]
 
 commands:
+  customanvil:
+    description: Generic command for custom anvil
   anvilconfigreload:
     description: Reload every config of this plugin
     permission: ca.command.reload
@@ -36,6 +38,9 @@ permissions:
   ca.command.reload:
     default: op
     description: Allow administrator to reload the plugin's configs
+  ca.command.debug:
+    default: op
+    description: Get debug information about the plugin and server
   ca.config.edit:
     default: op
     description: Allow administrator to edit the plugin's config in game