package com.hypixel.hytale.builtin.path.commands;

import com.hypixel.hytale.builtin.path.WorldPathBuilder;
import com.hypixel.hytale.component.Ref;
import com.hypixel.hytale.component.Store;
import com.hypixel.hytale.math.vector.Transform;
import com.hypixel.hytale.server.core.HytaleServer;
import com.hypixel.hytale.server.core.Message;
import com.hypixel.hytale.server.core.command.system.CommandContext;
import com.hypixel.hytale.server.core.command.system.arguments.system.OptionalArg;
import com.hypixel.hytale.server.core.command.system.arguments.system.RequiredArg;
import com.hypixel.hytale.server.core.command.system.arguments.types.ArgTypes;
import com.hypixel.hytale.server.core.command.system.basecommands.AbstractCommandCollection;
import com.hypixel.hytale.server.core.command.system.basecommands.AbstractPlayerCommand;
import com.hypixel.hytale.server.core.entity.UUIDComponent;
import com.hypixel.hytale.server.core.modules.entity.component.TransformComponent;
import com.hypixel.hytale.server.core.modules.entity.teleport.Teleport;
import com.hypixel.hytale.server.core.universe.PlayerRef;
import com.hypixel.hytale.server.core.universe.world.World;
import com.hypixel.hytale.server.core.universe.world.path.WorldPath;
import com.hypixel.hytale.server.core.universe.world.path.WorldPathConfig;
import com.hypixel.hytale.server.core.universe.world.storage.EntityStore;
import it.unimi.dsi.fastutil.objects.ObjectArrayList;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ScheduledFuture;
import java.util.concurrent.TimeUnit;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public class WorldPathBuilderCommand extends AbstractCommandCollection {
   public WorldPathBuilderCommand() {
      super("builder", "server.commands.worldpath.builder.desc");
      this.addSubCommand(new WorldPathBuilderCommand.WorldPathBuilderStopCommand());
      this.addSubCommand(new WorldPathBuilderCommand.WorldPathBuilderLoadCommand());
      this.addSubCommand(new WorldPathBuilderCommand.WorldPathBuilderSimulateCommand());
      this.addSubCommand(new WorldPathBuilderCommand.WorldPathBuilderClearCommand());
      this.addSubCommand(new WorldPathBuilderCommand.WorldPathBuilderAddCommand());
      this.addSubCommand(new WorldPathBuilderCommand.WorldPathBuilderSetCommand());
      this.addSubCommand(new WorldPathBuilderCommand.WorldPathBuilderGotoCommand());
      this.addSubCommand(new WorldPathBuilderCommand.WorldPathBuilderRemoveCommand());
      this.addSubCommand(new WorldPathBuilderCommand.WorldPathBuilderSaveCommand());
   }

   @Nonnull
   private static WorldPathBuilder createBuilder(@Nonnull Ref<EntityStore> ref, @Nonnull Store<EntityStore> store, @Nullable WorldPath existing) {
      UUIDComponent uuidComponent = store.getComponent(ref, UUIDComponent.getComponentType());

      assert uuidComponent != null;

      String name = "Builder-" + uuidComponent.getUuid();
      WorldPathBuilder builder = new WorldPathBuilder();
      if (existing == null) {
         builder.setPath(new WorldPath(name, new ObjectArrayList()));
      } else {
         builder.setPath(new WorldPath(name, new ObjectArrayList(existing.getWaypoints())));
      }

      return builder;
   }

   @Nullable
   private static WorldPathBuilder getBuilder(@Nonnull Ref<EntityStore> ref, @Nonnull Store<EntityStore> store) {
      return store.getComponent(ref, WorldPathBuilder.getComponentType());
   }

   @Nonnull
   private static WorldPathBuilder getOrCreateBuilder(@Nonnull Ref<EntityStore> ref, @Nonnull Store<EntityStore> store) {
      WorldPathBuilder builder = store.getComponent(ref, WorldPathBuilder.getComponentType());
      return builder != null ? builder : putBuilder(ref, store, createBuilder(ref, store, null));
   }

   @Nullable
   private static WorldPath removeBuilder(@Nonnull Ref<EntityStore> ref, @Nonnull Store<EntityStore> store) {
      WorldPathBuilder worldPath = store.getComponent(ref, WorldPathBuilder.getComponentType());
      if (worldPath != null) {
         store.removeComponent(ref, WorldPathBuilder.getComponentType());
         return worldPath.getPath();
      } else {
         return null;
      }
   }

   @Nonnull
   private static WorldPathBuilder putBuilder(@Nonnull Ref<EntityStore> ref, @Nonnull Store<EntityStore> store, @Nonnull WorldPathBuilder builder) {
      store.putComponent(ref, WorldPathBuilder.getComponentType(), builder);
      return builder;
   }

   private static class WorldPathBuilderAddCommand extends AbstractPlayerCommand {
      @Nonnull
      private static final Message MESSAGE_UNIVERSE_WORLD_PATH_POINT_ADDED = Message.translation("server.universe.worldpath.pointAdded");

      public WorldPathBuilderAddCommand() {
         super("add", "server.commands.worldpath.builder.add.desc");
      }

      @Override
      protected void execute(
         @Nonnull CommandContext context, @Nonnull Store<EntityStore> store, @Nonnull Ref<EntityStore> ref, @Nonnull PlayerRef playerRef, @Nonnull World world
      ) {
         TransformComponent transformComponent = store.getComponent(ref, TransformComponent.getComponentType());

         assert transformComponent != null;

         Transform transform = transformComponent.getTransform().clone();
         WorldPathBuilderCommand.getOrCreateBuilder(ref, store).getPath().getWaypoints().add(transform);
         context.sendMessage(MESSAGE_UNIVERSE_WORLD_PATH_POINT_ADDED);
      }
   }

   private static class WorldPathBuilderClearCommand extends AbstractPlayerCommand {
      @Nonnull
      private static final Message MESSAGE_UNIVERSE_WORLD_PATH_POINTS_CLEARED = Message.translation("server.universe.worldpath.pointsCleared");

      public WorldPathBuilderClearCommand() {
         super("clear", "server.commands.worldpath.builder.clear.desc");
      }

      @Override
      protected void execute(
         @Nonnull CommandContext context, @Nonnull Store<EntityStore> store, @Nonnull Ref<EntityStore> ref, @Nonnull PlayerRef playerRef, @Nonnull World world
      ) {
         WorldPathBuilder builder = WorldPathBuilderCommand.getBuilder(ref, store);
         if (builder != null) {
            builder.getPath().getWaypoints().clear();
            context.sendMessage(MESSAGE_UNIVERSE_WORLD_PATH_POINTS_CLEARED);
         }
      }
   }

   private static class WorldPathBuilderGotoCommand extends AbstractPlayerCommand {
      @Nonnull
      private final RequiredArg<Integer> indexArg = this.withRequiredArg("index", "server.commands.worldpath.builder.goto.index.desc", ArgTypes.INTEGER);

      public WorldPathBuilderGotoCommand() {
         super("goto", "server.commands.worldpath.builder.goto.desc");
      }

      @Override
      protected void execute(
         @Nonnull CommandContext context, @Nonnull Store<EntityStore> store, @Nonnull Ref<EntityStore> ref, @Nonnull PlayerRef playerRef, @Nonnull World world
      ) {
         WorldPathBuilder builder = WorldPathBuilderCommand.getBuilder(ref, store);
         if (builder != null) {
            Integer index = this.indexArg.get(context);
            WorldPath worldPath = builder.getPath();
            store.addComponent(ref, Teleport.getComponentType(), new Teleport(null, worldPath.getWaypoints().get(index)));
            context.sendMessage(Message.translation("server.universe.worldpath.teleportedToPoint").param("index", index));
         }
      }
   }

   private static class WorldPathBuilderLoadCommand extends AbstractPlayerCommand {
      @Nonnull
      private final RequiredArg<String> nameArg = this.withRequiredArg("name", "server.commands.worldpath.builder.load.name.desc", ArgTypes.STRING);

      public WorldPathBuilderLoadCommand() {
         super("load", "server.commands.worldpath.builder.load.desc");
      }

      @Override
      protected void execute(
         @Nonnull CommandContext context, @Nonnull Store<EntityStore> store, @Nonnull Ref<EntityStore> ref, @Nonnull PlayerRef playerRef, @Nonnull World world
      ) {
         String name = this.nameArg.get(context);
         WorldPath worldPath = world.getWorldPathConfig().getPath(name);
         if (worldPath == null) {
            context.sendMessage(Message.translation("server.universe.worldpath.noPathFound").param("path", name));
         } else {
            WorldPathBuilderCommand.putBuilder(ref, store, WorldPathBuilderCommand.createBuilder(ref, store, worldPath));
         }
      }
   }

   private static class WorldPathBuilderRemoveCommand extends AbstractPlayerCommand {
      @Nonnull
      private final RequiredArg<Integer> indexArg = this.withRequiredArg("index", "server.commands.worldpath.builder.remove.index.desc", ArgTypes.INTEGER);

      public WorldPathBuilderRemoveCommand() {
         super("remove", "server.commands.worldpath.builder.remove.desc");
      }

      @Override
      protected void execute(
         @Nonnull CommandContext context, @Nonnull Store<EntityStore> store, @Nonnull Ref<EntityStore> ref, @Nonnull PlayerRef playerRef, @Nonnull World world
      ) {
         WorldPathBuilder builder = WorldPathBuilderCommand.getBuilder(ref, store);
         if (builder != null) {
            int index = this.indexArg.get(context);
            builder.getPath().getWaypoints().remove(index);
            context.sendMessage(Message.translation("server.universe.worldpath.removedIndex").param("index", index));
         }
      }
   }

   private static class WorldPathBuilderSaveCommand extends AbstractPlayerCommand {
      @Nonnull
      private static final Message MESSAGE_UNIVERSE_WORLD_PATH_NO_POINTS_DEFINED = Message.translation("server.universe.worldpath.noPointsDefined");
      @Nonnull
      private static final Message MESSAGE_UNIVERSE_WORLD_PATH_SAVED = Message.translation("server.universe.worldpath.saved");
      @Nonnull
      private final RequiredArg<String> nameArg = this.withRequiredArg("name", "server.commands.worldpath.builder.save.name.desc", ArgTypes.STRING);

      public WorldPathBuilderSaveCommand() {
         super("save", "server.commands.worldpath.builder.save.desc");
      }

      @Override
      protected void execute(
         @Nonnull CommandContext context, @Nonnull Store<EntityStore> store, @Nonnull Ref<EntityStore> ref, @Nonnull PlayerRef playerRef, @Nonnull World world
      ) {
         String name = this.nameArg.get(context);
         WorldPath path = WorldPathBuilderCommand.removeBuilder(ref, store);
         if (path != null && !path.getWaypoints().isEmpty()) {
            WorldPathConfig worldPathConfig = world.getWorldPathConfig();
            WorldPath worldPath = new WorldPath(name, path.getWaypoints());
            worldPathConfig.putPath(worldPath);
            worldPathConfig.save(world);
            context.sendMessage(MESSAGE_UNIVERSE_WORLD_PATH_SAVED);
         } else {
            context.sendMessage(MESSAGE_UNIVERSE_WORLD_PATH_NO_POINTS_DEFINED);
         }
      }
   }

   private static class WorldPathBuilderSetCommand extends AbstractPlayerCommand {
      @Nonnull
      private static final Message MESSAGE_UNIVERSE_WORLD_PATH_POINT_SET = Message.translation("server.universe.worldpath.pointSet");
      @Nonnull
      private final OptionalArg<Integer> indexArg = this.withOptionalArg("index", "server.commands.worldpath.builder.set.index.desc", ArgTypes.INTEGER);

      public WorldPathBuilderSetCommand() {
         super("set", "server.commands.worldpath.builder.set.desc");
      }

      @Override
      protected void execute(
         @Nonnull CommandContext context, @Nonnull Store<EntityStore> store, @Nonnull Ref<EntityStore> ref, @Nonnull PlayerRef playerRef, @Nonnull World world
      ) {
         WorldPathBuilder builder = WorldPathBuilderCommand.getBuilder(ref, store);
         if (builder != null) {
            TransformComponent transformComponent = store.getComponent(ref, TransformComponent.getComponentType());

            assert transformComponent != null;

            WorldPath worldPath = builder.getPath();
            int index = this.indexArg.provided(context) ? this.indexArg.get(context) : worldPath.getWaypoints().size() - 1;
            worldPath.getWaypoints().set(index, transformComponent.getTransform().clone());
            context.sendMessage(MESSAGE_UNIVERSE_WORLD_PATH_POINT_SET);
         }
      }
   }

   private static class WorldPathBuilderSimulateCommand extends AbstractPlayerCommand {
      public WorldPathBuilderSimulateCommand() {
         super("simulate", "server.commands.worldpath.builder.simulate.desc");
      }

      @Override
      protected void execute(
         @Nonnull CommandContext context, @Nonnull Store<EntityStore> store, @Nonnull Ref<EntityStore> ref, @Nonnull PlayerRef playerRef, @Nonnull World world
      ) {
         WorldPathBuilder builder = WorldPathBuilderCommand.getBuilder(ref, store);
         if (builder != null) {
            ObjectArrayList<Transform> waypoints = new ObjectArrayList(builder.getPath().getWaypoints());
            CompletableFuture<Void> future = new CompletableFuture<>();
            ScheduledFuture<?>[] scheduledFuture = new ScheduledFuture[1];
            scheduledFuture[0] = HytaleServer.SCHEDULED_EXECUTOR.scheduleWithFixedDelay(() -> {
               Transform transform = (Transform)waypoints.removeFirst();
               if (transform == null) {
                  future.complete(null);
                  scheduledFuture[0].cancel(false);
               } else {
                  world.execute(() -> store.addComponent(ref, Teleport.getComponentType(), new Teleport(null, transform)));
               }
            }, 1L, 1L, TimeUnit.SECONDS);
         }
      }
   }

   private static class WorldPathBuilderStopCommand extends AbstractPlayerCommand {
      public WorldPathBuilderStopCommand() {
         super("stop", "server.commands.worldpath.builder.stop.desc");
      }

      @Override
      protected void execute(
         @Nonnull CommandContext context, @Nonnull Store<EntityStore> store, @Nonnull Ref<EntityStore> ref, @Nonnull PlayerRef playerRef, @Nonnull World world
      ) {
         WorldPathBuilderCommand.removeBuilder(ref, store);
      }
   }
}