package com.hypixel.hytale.server.npc.commands;

import com.hypixel.hytale.codec.validation.Validators;
import com.hypixel.hytale.common.util.RandomUtil;
import com.hypixel.hytale.component.AddReason;
import com.hypixel.hytale.component.Holder;
import com.hypixel.hytale.component.Ref;
import com.hypixel.hytale.component.RemoveReason;
import com.hypixel.hytale.component.Store;
import com.hypixel.hytale.function.consumer.TriConsumer;
import com.hypixel.hytale.math.shape.Box;
import com.hypixel.hytale.math.util.MathUtil;
import com.hypixel.hytale.math.vector.Vector3d;
import com.hypixel.hytale.math.vector.Vector3f;
import com.hypixel.hytale.protocol.PlayerSkin;
import com.hypixel.hytale.server.core.Message;
import com.hypixel.hytale.server.core.asset.type.model.config.Model;
import com.hypixel.hytale.server.core.asset.type.model.config.ModelAsset;
import com.hypixel.hytale.server.core.command.system.CommandContext;
import com.hypixel.hytale.server.core.command.system.arguments.system.FlagArg;
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.AbstractPlayerCommand;
import com.hypixel.hytale.server.core.command.system.exceptions.GeneralCommandException;
import com.hypixel.hytale.server.core.cosmetics.CosmeticsModule;
import com.hypixel.hytale.server.core.entity.Frozen;
import com.hypixel.hytale.server.core.entity.UUIDComponent;
import com.hypixel.hytale.server.core.entity.entities.Player;
import com.hypixel.hytale.server.core.modules.entity.component.BoundingBox;
import com.hypixel.hytale.server.core.modules.entity.component.HeadRotation;
import com.hypixel.hytale.server.core.modules.entity.component.TransformComponent;
import com.hypixel.hytale.server.core.modules.entity.player.ApplyRandomSkinPersistedComponent;
import com.hypixel.hytale.server.core.modules.entity.player.PlayerSkinComponent;
import com.hypixel.hytale.server.core.modules.physics.util.PhysicsMath;
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.storage.EntityStore;
import com.hypixel.hytale.server.flock.FlockPlugin;
import com.hypixel.hytale.server.flock.config.FlockAsset;
import com.hypixel.hytale.server.npc.NPCPlugin;
import com.hypixel.hytale.server.npc.asset.builder.Builder;
import com.hypixel.hytale.server.npc.asset.builder.BuilderInfo;
import com.hypixel.hytale.server.npc.entities.NPCEntity;
import com.hypixel.hytale.server.npc.pages.EntitySpawnPage;
import com.hypixel.hytale.server.npc.role.Role;
import com.hypixel.hytale.server.npc.role.RoleDebugFlags;
import com.hypixel.hytale.server.spawning.ISpawnableWithModel;
import com.hypixel.hytale.server.spawning.SpawnTestResult;
import com.hypixel.hytale.server.spawning.SpawningContext;
import it.unimi.dsi.fastutil.Pair;
import java.util.EnumSet;
import java.util.Random;
import java.util.concurrent.ThreadLocalRandom;
import java.util.logging.Level;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;

public class NPCSpawnCommand extends AbstractPlayerCommand {
   private static final double PLAYER_FOOT_POINT_EPSILON = 0.01;
   @Nonnull
   private final RequiredArg<BuilderInfo> roleArg = this.withRequiredArg("role", "server.commands.npc.spawn.role.desc", NPCCommand.NPC_ROLE);
   @Nonnull
   private final OptionalArg<Integer> countArg = this.withOptionalArg("count", "server.commands.npc.spawn.count.desc", ArgTypes.INTEGER)
      .addValidator(Validators.greaterThan(0));
   @Nonnull
   private final OptionalArg<Double> radiusArg = this.withOptionalArg("radius", "server.commands.npc.spawn.radius.desc", ArgTypes.DOUBLE)
      .addValidator(Validators.greaterThan(0.0));
   @Nonnull
   private final OptionalArg<String> flagsArg = this.withOptionalArg("flags", "server.commands.npc.spawn.flags.desc", ArgTypes.STRING);
   @Nonnull
   private final OptionalArg<Double> speedArg = this.withOptionalArg("speed", "server.commands.npc.spawn.speed.desc", ArgTypes.DOUBLE)
      .addValidator(Validators.greaterThan(0.0));
   @Nonnull
   private final FlagArg nonRandomArg = this.withFlagArg("nonrandom", "server.commands.npc.spawn.random.desc");
   @Nonnull
   private final OptionalArg<String> positionSetArg = this.withOptionalArg("position", "server.commands.npc.spawn.position.desc", ArgTypes.STRING);
   @Nonnull
   private final OptionalArg<String> posOffsetArg = this.withOptionalArg("posOffset", "server.commands.npc.spawn.posOffset.desc", ArgTypes.STRING);
   @Nonnull
   private final OptionalArg<String> headRotationArg = this.withOptionalArg("headRotation", "server.commands.npc.spawn.headRotation.desc", ArgTypes.STRING);
   @Nonnull
   private final OptionalArg<String> bodyRotationArg = this.withOptionalArg("bodyRotation", "server.commands.npc.spawn.bodyRotation.desc", ArgTypes.STRING);
   @Nonnull
   private final FlagArg randomRotationArg = this.withFlagArg("randomRotation", "server.commands.npc.spawn.randomRotation.desc");
   @Nonnull
   private final FlagArg facingRotationArg = this.withFlagArg("facingRotation", "server.commands.npc.spawn.facingRotation.desc");
   @Nonnull
   private final OptionalArg<String> flockArg = this.withOptionalArg("flock", "server.commands.npc.spawn.flock.desc", ArgTypes.STRING);
   @Nonnull
   private final FlagArg testArg = this.withFlagArg("test", "server.commands.npc.spawn.test.desc");
   @Nonnull
   private final FlagArg spawnOnGroundArg = this.withFlagArg("spawnOnGround", "server.commands.npc.spawn.spawnOnGround.desc");
   @Nonnull
   private final FlagArg frozenArg = this.withFlagArg("frozen", "server.commands.npc.spawn.frozen.desc");
   @Nonnull
   private final FlagArg randomModelArg = this.withFlagArg("randomModel", "server.commands.npc.spawn.randomModel.desc");
   @Nonnull
   private final OptionalArg<Float> scaleArg = this.withOptionalArg("scale", "server.commands.npc.spawn.scale.desc", ArgTypes.FLOAT);
   @Nonnull
   private final FlagArg bypassScaleLimitsArg = this.withFlagArg("bypassScaleLimits", "server.commands.npc.spawn.bypassScaleLimits.desc");

   public NPCSpawnCommand() {
      super("spawn", "server.commands.npc.spawn.desc");
      this.addUsageVariant(new NPCSpawnCommand.SpawnPageCommand());
   }

   @Override
   protected void execute(
      @Nonnull CommandContext context, @Nonnull Store<EntityStore> store, @Nonnull Ref<EntityStore> ref, @Nonnull PlayerRef playerRef, @Nonnull World world
   ) {
      NPCPlugin npcPlugin = NPCPlugin.get();
      BuilderInfo roleInfo = this.roleArg.get(context);
      int roleIndex = roleInfo.getIndex();
      HeadRotation headRotationComponent = store.getComponent(ref, HeadRotation.getComponentType());

      assert headRotationComponent != null;

      Vector3f playerHeadRotation = headRotationComponent.getRotation();
      TransformComponent transformComponent = store.getComponent(ref, TransformComponent.getComponentType());

      assert transformComponent != null;

      Vector3d playerPosition = transformComponent.getPosition();
      BoundingBox boundingBoxComponent = store.getComponent(ref, BoundingBox.getComponentType());

      assert boundingBoxComponent != null;

      Box playerBoundingBox = boundingBoxComponent.getBoundingBox();
      int count = this.countArg.provided(context) ? this.countArg.get(context) : 1;
      double radius = this.radiusArg.provided(context) ? this.radiusArg.get(context) : 8.0;
      String flagsString = this.flagsArg.provided(context) ? this.flagsArg.get(context) : null;
      EnumSet<RoleDebugFlags> flags = flagsString != null ? RoleDebugFlags.getFlags(flagsString.split(",")) : RoleDebugFlags.getPreset("none");
      Vector3d velocity = new Vector3d(Vector3d.ZERO);
      if (this.speedArg.provided(context)) {
         PhysicsMath.vectorFromAngles(playerHeadRotation.getYaw(), playerHeadRotation.getPitch(), velocity);
         velocity.setLength(this.speedArg.get(context));
      }

      Random random = (Random)(this.nonRandomArg.get(context) ? new Random(0L) : ThreadLocalRandom.current());
      Vector3d posOffset = this.posOffsetArg.provided(context) ? this.parseVector3d(context, this.posOffsetArg.get(context)) : null;
      Vector3f headRotation = this.headRotationArg.provided(context) ? this.parseVector3f(context, this.headRotationArg.get(context)) : null;
      boolean randomRotation = false;
      Vector3f rotation = playerHeadRotation;
      if (this.bodyRotationArg.provided(context)) {
         rotation = this.parseVector3f(context, this.bodyRotationArg.get(context));
      } else if (this.randomRotationArg.get(context)) {
         randomRotation = true;
      } else if (this.facingRotationArg.get(context)) {
         playerHeadRotation.setY(playerHeadRotation.getY() - (float) Math.PI);
      }

      String flockSizeString = this.flockArg.provided(context) ? this.flockArg.get(context) : "1";
      Integer flockSize = this.parseFlockSize(context, flockSizeString);
      if (flockSize != null) {
         Boolean frozen = this.frozenArg.get(context);
         npcPlugin.forceValidation(roleIndex);
         if (!npcPlugin.testAndValidateRole(roleInfo)) {
            throw new GeneralCommandException(Message.translation("server.commands.npc.spawn.validation_failed"));
         } else {
            try {
               for (int i = 0; i < count; i++) {
                  Builder<Role> roleBuilder = npcPlugin.tryGetCachedValidRole(roleIndex);
                  if (roleBuilder == null) {
                     throw new IllegalArgumentException("Can't find a matching role builder");
                  }

                  if (!(roleBuilder instanceof ISpawnableWithModel spawnable)) {
                     throw new IllegalArgumentException("Role builder must support ISpawnableWithModel interface");
                  }

                  if (!roleBuilder.isSpawnable()) {
                     throw new IllegalArgumentException("Abstract role templates cannot be spawned directly - a variant needs to be created!");
                  }

                  SpawningContext spawningContext = new SpawningContext();
                  if (!spawningContext.setSpawnable(spawnable)) {
                     throw new GeneralCommandException(Message.translation("server.commands.npc.spawn.cantSetRolebuilder"));
                  }

                  TriConsumer<NPCEntity, Ref<EntityStore>, Store<EntityStore>> skinApplyingFunction = null;
                  Model model;
                  if (this.randomModelArg.get(context)) {
                     PlayerSkin playerSkin = CosmeticsModule.get().generateRandomSkin(RandomUtil.getSecureRandom());
                     model = CosmeticsModule.get().createModel(playerSkin);
                     skinApplyingFunction = (npcEntity, entityStoreRef, entityStore) -> {
                        entityStore.putComponent(entityStoreRef, PlayerSkinComponent.getComponentType(), new PlayerSkinComponent(playerSkin));
                        entityStore.putComponent(
                           entityStoreRef, ApplyRandomSkinPersistedComponent.getComponentType(), ApplyRandomSkinPersistedComponent.INSTANCE
                        );
                     };
                  } else {
                     model = spawningContext.getModel();
                  }

                  if (randomRotation) {
                     rotation = new Vector3f(0.0F, (float)(2.0 * random.nextDouble() * Math.PI), 0.0F);
                  }

                  if (this.scaleArg.provided(context)) {
                     ModelAsset modelAsset = ModelAsset.getAssetMap().getAsset(model.getModelAssetId());

                     assert modelAsset != null;

                     Float scale = this.scaleArg.get(context);
                     if (!this.bypassScaleLimitsArg.get(context)) {
                        scale = MathUtil.clamp(scale, modelAsset.getMinScale(), modelAsset.getMaxScale());
                     }

                     model = Model.createScaledModel(modelAsset, scale);
                  }

                  Ref<EntityStore> npcRef;
                  NPCEntity npc;
                  if (count == 1 && this.testArg.get(context)) {
                     if (!spawningContext.set(world, playerPosition.x, playerPosition.y, playerPosition.z)) {
                        throw new GeneralCommandException(Message.translation("server.commands.npc.spawn.cantSpawnNotEnoughSpace"));
                     }

                     if (spawnable.canSpawn(spawningContext) != SpawnTestResult.TEST_OK) {
                        throw new GeneralCommandException(Message.translation("server.commands.npc.spawn.cantSpawnNotSuitable"));
                     }

                     Vector3d spawnPosition = spawningContext.newPosition();
                     if (posOffset != null) {
                        spawnPosition.add(posOffset);
                     }

                     Pair<Ref<EntityStore>, NPCEntity> npcPair = npcPlugin.spawnEntity(store, roleIndex, spawnPosition, rotation, model, skinApplyingFunction);
                     npcRef = (Ref<EntityStore>)npcPair.first();
                     npc = (NPCEntity)npcPair.second();
                     if (flockSize > 1) {
                        FlockPlugin.trySpawnFlock(npcRef, npc, store, roleIndex, spawnPosition, rotation, flockSize, skinApplyingFunction);
                     }
                  } else {
                     Vector3d position;
                     if (this.positionSetArg.provided(context)) {
                        position = this.parseVector3d(context, this.positionSetArg.get(context));
                        if (position == null) {
                           return;
                        }

                        position.y = position.y - model.getBoundingBox().min.y;
                     } else {
                        position = new Vector3d(playerPosition);
                        position.y = Math.floor(position.y + playerBoundingBox.min.y + 0.01) - model.getBoundingBox().min.y;
                     }

                     if (posOffset != null) {
                        position.add(posOffset);
                     }

                     Pair<Ref<EntityStore>, NPCEntity> npcPair = npcPlugin.spawnEntity(store, roleIndex, position, rotation, model, skinApplyingFunction);
                     npcRef = (Ref<EntityStore>)npcPair.first();
                     npc = (NPCEntity)npcPair.second();
                     if (flockSize > 1) {
                        FlockPlugin.trySpawnFlock(npcRef, npc, store, roleIndex, position, rotation, flockSize, skinApplyingFunction);
                     }
                  }

                  TransformComponent npcTransformComponent = store.getComponent(npcRef, TransformComponent.getComponentType());

                  assert npcTransformComponent != null;

                  HeadRotation npcHeadRotationComponent = store.getComponent(npcRef, HeadRotation.getComponentType());

                  assert npcHeadRotationComponent != null;

                  UUIDComponent npcUuidComponent = store.getComponent(npcRef, UUIDComponent.getComponentType());

                  assert npcUuidComponent != null;

                  if (headRotation != null) {
                     npcHeadRotationComponent.getRotation().assign(headRotation);
                     store.ensureComponent(npcRef, Frozen.getComponentType());
                  }

                  Vector3d npcPosition = npcTransformComponent.getPosition();
                  double x = npcPosition.getX();
                  double y = npcPosition.getY();
                  double z = npcPosition.getZ();
                  if (count > 1) {
                     x += random.nextDouble() * 2.0 * radius - radius;
                     z += random.nextDouble() * 2.0 * radius - radius;
                     y += this.spawnOnGroundArg.get(context) ? 0.1 : random.nextDouble() * 2.0 + 5.0;
                  } else {
                     y += 0.1;
                  }

                  npcPosition.assign(x, y, z);
                  npc.saveLeashInformation(npcPosition, npcTransformComponent.getRotation());
                  if (!velocity.equals(Vector3d.ZERO)) {
                     npc.getRole().forceVelocity(velocity, null, false);
                  }

                  if (frozen) {
                     store.ensureComponent(npcRef, Frozen.getComponentType());
                  }

                  EnumSet<RoleDebugFlags> debugFlags = npc.getRoleDebugFlags().clone();
                  debugFlags.addAll(flags);
                  if (!debugFlags.isEmpty()) {
                     Holder<EntityStore> holder = store.removeEntity(npcRef, RemoveReason.UNLOAD);
                     npc.setRoleDebugFlags(debugFlags);
                     store.addEntity(holder, AddReason.LOAD);
                  }

                  NPCPlugin.get()
                     .getLogger()
                     .at(Level.INFO)
                     .log("%s created with id %s at position %s", npc.getRoleName(), npcUuidComponent.getUuid(), Vector3d.formatShortString(npcPosition));
               }
            } catch (IllegalStateException | NullPointerException | IllegalArgumentException var49) {
               NPCPlugin.get().getLogger().at(Level.WARNING).log("Spawn failed: " + var49.getMessage());
               throw new GeneralCommandException(Message.translation("server.commands.npc.spawn.failed").param("reason", var49.getMessage()));
            }
         }
      }
   }

   @Nullable
   private Vector3d parseVector3d(@Nonnull CommandContext context, @Nonnull String str) {
      String[] parts = str.split(",");
      if (parts.length != 3) {
         context.sendMessage(Message.raw("Invalid Vector3d format: must be three comma-separated doubles"));
         return null;
      } else {
         try {
            return new Vector3d(Double.parseDouble(parts[0]), Double.parseDouble(parts[1]), Double.parseDouble(parts[2]));
         } catch (NumberFormatException var5) {
            context.sendMessage(Message.raw("Invalid Vector3d format: " + var5.getMessage()));
            return null;
         }
      }
   }

   @Nullable
   private Vector3f parseVector3f(@Nonnull CommandContext context, @Nonnull String str) {
      String[] parts = str.split(",");
      if (parts.length != 3) {
         context.sendMessage(Message.raw("Invalid Vector3f format: must be three comma-separated floats"));
         return null;
      } else {
         try {
            return new Vector3f(Float.parseFloat(parts[0]), Float.parseFloat(parts[1]), Float.parseFloat(parts[2]));
         } catch (NumberFormatException var5) {
            context.sendMessage(Message.raw("Invalid Vector3f format: " + var5.getMessage()));
            return null;
         }
      }
   }

   @Nullable
   private Integer parseFlockSize(@Nonnull CommandContext context, @Nonnull String str) {
      try {
         Integer size = Integer.valueOf(str);
         if (size <= 0) {
            context.sendMessage(Message.raw("Flock size must be greater than 0!"));
            return null;
         } else {
            return size;
         }
      } catch (NumberFormatException var5) {
         FlockAsset flockDefinition = FlockAsset.getAssetMap().getAsset(str);
         if (flockDefinition == null) {
            context.sendMessage(Message.raw("No such flock asset: " + str));
            return null;
         } else {
            return flockDefinition.pickFlockSize();
         }
      }
   }

   public static class SpawnPageCommand extends AbstractPlayerCommand {
      public SpawnPageCommand() {
         super("server.commands.npc.spawn.page.desc");
      }

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

         assert playerComponent != null;

         PlayerRef playerRefComponent = store.getComponent(ref, PlayerRef.getComponentType());

         assert playerRefComponent != null;

         playerComponent.getPageManager().openCustomPage(ref, store, new EntitySpawnPage(playerRefComponent));
      }
   }
}