using Godot;
using System.Linq;
using System;
using Zennysoft.Ma.Adapter;
using Zennysoft.Ma.Adapter.Entity;
using System.Collections.Generic;

namespace Zennysoft.Game.Ma;

public class EffectService
{
  private readonly IGame _game;
  private readonly IPlayer _player;
  private readonly IMap _map;

  public EffectService(IGame game, IPlayer player, IMap map)
  {
    _game = game;
    _player = player;
    _map = map;
  }

  public void TeleportEnemiesToCurrentRoom(List<IEnemy> enemyList)
  {
    var currentRoom = _map.CurrentFloor.GetPlayersCurrentRoom();

    if (currentRoom is MonsterRoom currentMonsterRoom)
    {
      foreach (var enemy in enemyList)
        enemy.MoveEnemyToNewRoom(currentMonsterRoom);
    }
  }

  public void KillHalfEnemiesInRoom()
  {
    var currentRoom = _map.CurrentFloor.GetPlayersCurrentRoom();
    if (currentRoom is not MonsterRoom)
      return;

    var currentMonsterRoom = (MonsterRoom)currentRoom;
    var enemyList = currentMonsterRoom.GetEnemiesInCurrentRoom().OfType<IEnemy>().ToList();
    var enemiesToKill = enemyList.Count / 2;
    for (var i = 0; i < enemiesToKill; i++)
      enemyList[i].Die();
  }

  public void TurnAllEnemiesInRoomIntoHealingItem()
  {
    var currentRoom = _map.CurrentFloor.GetPlayersCurrentRoom();

    if (currentRoom is not MonsterRoom)
      return;

    var currentEnemies = currentRoom.EnemiesInRoom.OfType<IEnemy>().ToList();
    foreach (var enemy in currentEnemies)
    {
      enemy.OnMorph();
      DropHealingItem(enemy.GlobalPosition);
    }
    if (currentEnemies.Any())
      SfxDatabase.Instance.Play(SoundEffect.TurnAllEnemiesIntoHealingItems);
  }

  public void DropHealingItem(Vector3 vector)
  {
    var consumableFolder = "res://src/items/consumable";
    var restorativeScene = GD.Load<PackedScene>($"{consumableFolder}/ConsumableItem.tscn");
    var consumable = restorativeScene.Instantiate<ConsumableItem>();
    var resourceFiles = DirAccess.GetFilesAt($"{consumableFolder}/resources");
    var rng = new RandomNumberGenerator();
    rng.Randomize();
    var randomResource = resourceFiles[rng.RandiRange(0, resourceFiles.Length - 1)];
    var randomFile = ResourceLoader.Load<ConsumableItemStats>($"{consumableFolder}/resources/{randomResource}".TrimSuffix(".remap"));
    consumable.Stats = randomFile;
    _game.AddChild(consumable);
    consumable.GlobalPosition = vector;
  }

  public void HealAllEnemiesAndPlayerInRoomToFull()
  {
    var currentRoom = _map.CurrentFloor.GetPlayersCurrentRoom();

    if (currentRoom is not MonsterRoom)
      return;

    currentRoom.EnemiesInRoom.ForEach(e => e.HealthComponent.SetCurrentHealth(e.HealthComponent.MaximumHP.Value));
    currentRoom.EnemiesInRoom.ForEach(e => e.OnHealed());
    _player.HealthComponent.SetCurrentHealth(_player.HealthComponent.MaximumHP.Value);
    SfxDatabase.Instance.Play(SoundEffect.HealHP);
  }

  public int AbsorbHPFromAllEnemiesInRoom()
  {
    var currentRoom = _map.CurrentFloor.GetPlayersCurrentRoom();

    if (currentRoom is not MonsterRoom)
      return 0;

    var currentEnemies = currentRoom.EnemiesInRoom;
    var hpToAbsorb = 0.0;
    foreach (var enemy in currentEnemies)
    {
      var absorbAmount = enemy.HealthComponent.CurrentHP.Value * 0.25;
      enemy.HealthComponent.Damage((int)absorbAmount, ElementType.None);
      hpToAbsorb += absorbAmount;
      enemy.OnAbsorb();
    }
    return (int)hpToAbsorb;
  }

  public void DealElementalDamageToAllEnemiesInRoom(ElementType elementType)
  {
    var currentRoom = _map.CurrentFloor.GetPlayersCurrentRoom();

    if (currentRoom is not MonsterRoom)
      return;

    var currentEnemies = currentRoom.EnemiesInRoom;
    foreach (var enemy in currentEnemies)
    {
      var damageDealt = DamageCalculator.CalculateDamage(new AttackData(20, elementType), 10, enemy.ElementalResistanceSet);
      enemy.HealthComponent.Damage(damageDealt, elementType);
    }
  }

  public void SwapHPandVT()
  {
    var oldHp = Mathf.Max(1, _player.HealthComponent.CurrentHP.Value);
    var oldVt = Mathf.Max(1, _player.VTComponent.CurrentVT.Value);

    _player.HealthComponent.SetCurrentHealth(oldVt);
    _player.VTComponent.SetVT(oldHp);
    SfxDatabase.Instance.Play(SoundEffect.SwapHPAndVT);
  }

  public void RandomEffect()
  {
    var randomEffects = Enum.GetValues(typeof(UsableItemTag)).Cast<UsableItemTag>().Except([UsableItemTag.RandomEffect, UsableItemTag.None]).ToList();
    var rng = new RandomNumberGenerator();
    rng.Randomize();
    var index = rng.RandiRange(0, randomEffects.Count - 1);
    var randomItem = new EffectItem() { Stats = new EffectItemStats() { UsableItemTag = randomEffects[index], BonusAttack = 1, BonusDefense = 1, BonusLuck = 10 } };
    _game.UseItem(randomItem);
  }

  public void DoubleExp()
  {
    _game.DoubleExp();
  }

  public void RaiseCurrentWeaponAttack()
  {
    if (string.IsNullOrEmpty(_player.EquipmentComponent.EquippedWeapon.Value.ItemName))
      return;

    var currentWeapon = (Weapon)_player.EquipmentComponent.EquippedWeapon.Value;
    currentWeapon.IncreaseAttack(1);
    SfxDatabase.Instance.Play(SoundEffect.IncreaseStat);
  }

  public void RaiseCurrentArmorDefense()
  {
    if (string.IsNullOrEmpty(_player.EquipmentComponent.EquippedArmor.Value.ItemName))
      return;

    var currentArmor = (Armor)_player.EquipmentComponent.EquippedArmor.Value;
    currentArmor.IncreaseArmorDefense(1);
    SfxDatabase.Instance.Play(SoundEffect.IncreaseStat);
  }

  public void LowerCurrentArmorDefense()
  {
    if (string.IsNullOrEmpty(_player.EquipmentComponent.EquippedArmor.Value.ItemName))
      return;

    var currentArmor = (Armor)_player.EquipmentComponent.EquippedArmor.Value;
    currentArmor.DecreaseArmorDefense(1);
    SfxDatabase.Instance.Play(SoundEffect.DecreaseStat);
  }

  public void RestoreParameters(IPlayer player)
  {
    var hpToRestore = player.HealthComponent.MaximumHP.Value;
    player.HealthComponent.SetCurrentHealth(hpToRestore);

    var vtToRestore = player.VTComponent.MaximumVT.Value;
    player.VTComponent.SetVT(vtToRestore);

    var attackToRestore = player.AttackComponent.MaximumAttack.Value - player.AttackComponent.CurrentAttack.Value;
    player.AttackComponent.Restore(attackToRestore);

    var defenseToRestore = player.DefenseComponent.MaximumDefense.Value - player.DefenseComponent.CurrentDefense.Value;
    player.DefenseComponent.Restore(defenseToRestore);

    if (player.LuckComponent.Luck.Value < player.LuckComponent.InitialLuck)
      player.LuckComponent.IncreaseLuck(player.LuckComponent.InitialLuck - player.LuckComponent.Luck.Value);
  }

  public void RaiseLevel()
  {
    var expToNextLevel = _player.ExperiencePointsComponent.ExpToNextLevel.Value - _player.ExperiencePointsComponent.CurrentExp.Value;
    _player.ExperiencePointsComponent.GainUnmodified(expToNextLevel);
  }

  public void LowerLevel()
  {
    var expToNextLevel = _player.ExperiencePointsComponent.ExpToNextLevel.Value - _player.ExperiencePointsComponent.CurrentExp.Value;
    _player.ExperiencePointsComponent.LevelDown();
  }

  public void TeleportToRandomRoom(IEnemy enemy)
  {
    var currentFloor = _game.CurrentFloor;
    var rooms = currentFloor.Rooms;
    var currentRoom = enemy.GetCurrentRoom(rooms);
    var validRooms = rooms.OfType<MonsterRoom>().ToList();
    if (currentRoom is MonsterRoom currentMonsterRoom)
      validRooms.Remove(currentMonsterRoom);

    if (validRooms.Count == 0)
      return;

    var roomsGodotCollection = new Godot.Collections.Array<MonsterRoom>(validRooms);
    var randomRoom = roomsGodotCollection.PickRandom();

    enemy.MoveEnemyToNewRoom(randomRoom);
  }

  public void DisableEnemyMovement(IEnemy enemy)
  {
    enemy.SetEnemySpeedByMultiplier(0);
  }

  public void CloneEnemy(IEnemy enemy)
  {
    var enemyPosition = new Vector3(enemy.GlobalPosition.X, 0f, enemy.GlobalPosition.Z);
    var enemyType = EnemyTypeToEnemyConverter.Convert(enemy);
    var duplicatedEnemy = EnemyTypeToEnemyConverter.Convert(enemyType);
    duplicatedEnemy.GlobalPosition = enemy.GlobalPosition + enemy.GlobalBasis.X;
    _map.AddChild(duplicatedEnemy);
  }

  public void MeltAllEquipment(IPlayer player)
  {
    var weapon = player.EquipmentComponent.EquippedWeapon.Value;
    var armor = player.EquipmentComponent.EquippedArmor.Value;
    var accessory = player.EquipmentComponent.EquippedAccessory.Value;
    var ammo = player.EquipmentComponent.EquippedAmmo.Value;

    if (weapon != null)
    {
      player.Unequip(weapon);
      player.Inventory.Remove(weapon);
    }
    if (armor != null)
    {
      player.Unequip(armor);
      player.Inventory.Remove(armor);
    }
    if (accessory != null)
    {
      player.Unequip(accessory);
      player.Inventory.Remove(accessory);
    }
    if (ammo != null)
    {
      player.Unequip(ammo);
      player.Inventory.Remove(ammo);
    }
  }

  public void GlueAllEquipment(IPlayer player)
  {
    var weapon = player.EquipmentComponent.EquippedWeapon.Value;
    var armor = player.EquipmentComponent.EquippedArmor.Value;
    var accessory = player.EquipmentComponent.EquippedAccessory.Value;

    if (weapon != null && !string.IsNullOrEmpty(weapon.ItemName))
      weapon.Glued = true;
    if (armor != null && !string.IsNullOrEmpty(armor.ItemName))
      armor.Glued = true;
    if (accessory != null && !string.IsNullOrEmpty(accessory.ItemName))
      accessory.Glued = true;

    player.EquipmentComponent.UpdateEquipment(weapon);
    player.EquipmentComponent.UpdateEquipment(armor);
    player.EquipmentComponent.UpdateEquipment(accessory);
  }

  public void TeleportToRandomRoom(IPlayer player)
  {
    var currentFloor = _game.CurrentFloor;
    var rooms = currentFloor.Rooms;

    var currentRoom = rooms.SingleOrDefault(x => x.IsPlayerInRoom);

    var validRooms = rooms.OfType<MonsterRoom>().ToList();
    if (currentRoom is MonsterRoom currentMonsterRoom)
      validRooms.Remove(currentMonsterRoom);

    if (validRooms.Count == 0)
      return;

    var roomsGodotCollection = new Godot.Collections.Array<MonsterRoom>(validRooms);
    var randomRoom = roomsGodotCollection.PickRandom();
    var spawnPoint = randomRoom.PlayerSpawn;
    player.TeleportPlayer((spawnPoint.Rotation, new Vector3(spawnPoint.GlobalPosition.X, _player.GlobalPosition.Y, spawnPoint.GlobalPosition.Z)));
    SfxDatabase.Instance.Play(SoundEffect.TeleportToRandomRoom);
  }

  public bool WarpToExit()
  {
    var exitRoom = _game.CurrentFloor.Rooms.OfType<ExitRoom>().Single();
    if (exitRoom.PlayerDiscoveredRoom)
    {
      SfxDatabase.Instance.Play(SoundEffect.TeleportToExit);
      var exitPoint = exitRoom.PlayerSpawn.GlobalPosition;
      _player.TeleportPlayer((exitRoom.PlayerSpawn.Rotation, new Vector3(exitPoint.X, _player.GlobalPosition.Y, exitPoint.Z)));
      return true;
    }
    return false;
  }

  public void DamagesPlayer(int damage)
  {
    _player.TakeDamage(new AttackData(damage, ElementType.None, true, true));
  }

  public void RerollItem(IBaseInventoryItem itemToReroll)
  {
    var itemReroller = new ItemReroller(ItemDatabase.Instance);
    itemReroller.RerollItem(itemToReroll, _player.Inventory);
  }

  public T GetRandomItemOfType<T>(params T[] itemsToExclude)
    where T : IBaseInventoryItem => ItemDatabase.Instance.PickItem(itemsToExclude);

  public void RandomSpell(EffectItem item)
  {
    var itemEffects = Enum.GetValues<UsableItemTag>().ToList();
    itemEffects.Remove(UsableItemTag.RandomEffect);
    itemEffects.Remove(UsableItemTag.None);
    var randomEffect = new Godot.Collections.Array<UsableItemTag>(itemEffects).PickRandom();
    item.SetEffectTag(randomEffect);
    _game.UseItem(item);
  }

  public T DropTo1HPAndGainRareItem<T>()
    where T : IBaseInventoryItem
  {
    _player.HealthComponent.SetCurrentHealth(1);
    return ItemDatabase.Instance.PickRareItem<T>();
  }

  public void TradeRandomItem<T>(BoxItem box)
    where T : IBaseInventoryItem
  {
    var tradableItems = _player.Inventory.Items.OfType<T>().Where(x => x.ItemTag != ItemTag.KeyItem).ToList();
    var rng = new RandomNumberGenerator();
    rng.Randomize();
    var randomIndex = rng.RandiRange(0, tradableItems.Count - 1);
    var randomItem = tradableItems[randomIndex];
    if (randomItem is IEquipableItem equipableItem && _player.EquipmentComponent.IsItemEquipped(equipableItem))
      _player.Unequip(equipableItem);
    _player.Inventory.Remove(randomItem);

    GetRandomItemOfType<T>();
  }

  public IEnumerable<IBaseInventoryItem> TradeAllRandomItems(BoxItem box)
  {
    var newInventory = new List<IBaseInventoryItem>();
    var items = _player.Inventory.Items.Where(x => x.ItemTag != ItemTag.KeyItem).ToList();
    foreach (var item in items)
      newInventory.Add(GetRandomItemOfType<IBaseInventoryItem>());

    return newInventory;
  }

  public IBaseInventoryItem GetUnobtainedItem()
  {
    var pickableItems = ItemDatabase.Instance.Items.Except(_player.Inventory.Items).ToList();
    var rng = new RandomNumberGenerator();
    rng.Randomize();
    var randomIndex = rng.RandiRange(0, pickableItems.Count - 1);
    var selectedItem = pickableItems[randomIndex];

    if (selectedItem is ThrowableItem throwableItem)
      throwableItem.SetCount(rng.RandiRange(throwableItem.Stats.MinimumCount, throwableItem.Stats.MaximumCount));

    return selectedItem;
  }

  public T GetBasicItem<T>()
    where T : IBaseInventoryItem
  {
    return ItemDatabase.Instance.PickBasicItem<T>();
  }
}