Implement /p home

src/main/kotlin/io/dico/parcels2/command/ParcelCommandBuilder.kt

@@ -6,10 +6,9 @@ import io.dico.dicore.command.ICommandDispatcher
 import io.dico.dicore.command.parameter.ArgumentBuffer
 import io.dico.dicore.command.parameter.IParameter
 import io.dico.dicore.command.parameter.type.ParameterType
-import io.dico.parcels2.Parcel
-import io.dico.parcels2.ParcelsPlugin
-import io.dico.parcels2.Worlds
-import io.dico.parcels2.debugging
+import io.dico.parcels2.*
+import org.bukkit.Bukkit
+import org.bukkit.OfflinePlayer
 import org.bukkit.command.CommandSender
 import org.bukkit.entity.Player
 
@@ -18,6 +17,7 @@ fun getParcelCommands(plugin: ParcelsPlugin): ICommandDispatcher {
     //@formatter:off
     return CommandBuilder()
         .addParameterType(false, ParcelParameterType(plugin.worlds))
+        .addParameterType(false, ParcelHomeParameterType(plugin.worlds))
         .group("parcel", "plot", "plots", "p")
             .registerCommands(ParcelCommands(plugin))
             .putDebugCommands(plugin)
@@ -35,25 +35,28 @@ private fun CommandBuilder.putDebugCommands(plugin: ParcelsPlugin): CommandBuild
     //@formatter:on
 }
 
-private val regex = Regex.fromLiteral("((.+)->)?([0-9]+):([0-9]+)")
+private fun invalidInput(parameter: IParameter<*>, message: String): Nothing {
+    throw CommandException("invalid input for ${parameter.name}: $message")
+}
+
+private fun Worlds.getTargetWorld(input: String?, sender: CommandSender, parameter: IParameter<*>): ParcelWorld {
+    val worldName = input
+        ?.takeUnless { it.isEmpty() }
+        ?: (sender as? Player)?.world?.name
+        ?: invalidInput(parameter, "console cannot omit the world name")
+
+    return getWorld(worldName)
+        ?: invalidInput(parameter, "$worldName is not a parcel world")
+}
 
 private class ParcelParameterType(val worlds: Worlds) : ParameterType<Parcel, Unit>(Parcel::class.java) {
-
-    private fun invalidInput(parameter: IParameter<*>, message: String): Nothing {
-        throw CommandException("invalid input for ${parameter.name}: $message")
-    }
+    val regex = Regex.fromLiteral("((.+)->)?([0-9]+):([0-9]+)")
 
     override fun parse(parameter: IParameter<Parcel>, sender: CommandSender, buffer: ArgumentBuffer): Parcel {
         val matchResult = regex.matchEntire(buffer.next())
             ?: invalidInput(parameter, "must match (w->)?a:b (/${regex.pattern}/)")
 
-        val worldName = matchResult.groupValues[2]
-            .takeUnless { it.isEmpty() }
-            ?: (sender as? Player)?.world?.name
-            ?: invalidInput(parameter, "console cannot omit the world name")
-
-        val world = worlds.getWorld(worldName)
-            ?: invalidInput(parameter, "$worldName is not a parcel world")
+        val world = worlds.getTargetWorld(matchResult.groupValues[2], sender, parameter)
 
         val x = matchResult.groupValues[3].toIntOrNull()
             ?: invalidInput(parameter, "couldn't parse int")
@@ -66,3 +69,49 @@ private class ParcelParameterType(val worlds: Worlds) : ParameterType<Parcel, Un
     }
 
 }
+
+class NamedParcelTarget(val world: ParcelWorld, val player: OfflinePlayer, val index: Int)
+
+private class ParcelHomeParameterType(val worlds: Worlds) : ParameterType<NamedParcelTarget, Unit>(NamedParcelTarget::class.java) {
+    val regex = Regex.fromLiteral("((.+)->)?(.+)|((.+):([0-9]+))")
+
+    private fun requirePlayer(sender: CommandSender, parameter: IParameter<*>): Player {
+        if (sender !is Player) invalidInput(parameter, "console cannot omit the player name")
+        return sender
+    }
+
+    @Suppress("UsePropertyAccessSyntax")
+    private fun getOfflinePlayer(input: String, parameter: IParameter<*>) = Bukkit.getOfflinePlayer(input)
+        ?.takeIf { it.isOnline() || it.hasPlayedBefore() }
+        ?: invalidInput(parameter, "do not know who $input is")
+
+    override fun parse(parameter: IParameter<NamedParcelTarget>, sender: CommandSender, buffer: ArgumentBuffer): NamedParcelTarget {
+        val matchResult = regex.matchEntire(buffer.next())
+            ?: invalidInput(parameter, "must be a player, index, or player:index (/${regex.pattern}/)")
+
+        val world = worlds.getTargetWorld(matchResult.groupValues[2], sender, parameter)
+
+        matchResult.groupValues[3].takeUnless { it.isEmpty() }?.let {
+            // first group was matched, it's a player or an int
+            it.toIntOrNull()?.let {
+                requirePlayer(sender, parameter)
+                return NamedParcelTarget(world, sender as Player, it)
+            }
+
+            return NamedParcelTarget(world, getOfflinePlayer(it, parameter), 0)
+        }
+
+        val player = getOfflinePlayer(matchResult.groupValues[5], parameter)
+        val index = matchResult.groupValues[6].toIntOrNull()
+            ?: invalidInput(parameter, "couldn't parse int")
+
+        return NamedParcelTarget(world, player, index)
+    }
+
+    override fun getDefaultValue(parameter: IParameter<NamedParcelTarget>, sender: CommandSender, buffer: ArgumentBuffer): NamedParcelTarget {
+        val world = worlds.getTargetWorld(null, sender, parameter)
+        val player = requirePlayer(sender, parameter)
+        return NamedParcelTarget(world, player, 0)
+    }
+
+}