using Godot;
using Godot.Collections;
using System.Linq;

public partial class StageGUI : Control
{
   [Signal]
   public delegate void OnCharacterSelectionMadeEventHandler(Character player);
   [Signal]
   public delegate void CapricornSelectedEventHandler(Player player);
   [Signal]
   public delegate void PiscesSelectedEventHandler(Player player);
   [Signal]
   public delegate void SagittariusSelectedEventHandler(Player player);
   [Signal]
   public delegate void ScorpioSelectedEventHandler(Player player);
   [Signal]
   public delegate void OnPlayerGameOverEventHandler(Player player);
   [Signal]
   public delegate void OnGameOverEventHandler(Array<Player> players);

   private GameManager _gameManager;

   public override void _EnterTree()
   {
      _gameManager = GetTree().Root.GetNode<GameManager>("Main/GameManager");
   }

   public void OnCharacterSelect(Player player)
   {
      if (player.GameOver)
         return;

      player.IsSelectingCharacter = true;
      ChangeBG(player);
   }

   public override void _Process(double delta)
   {
      var playersSelecting = _gameManager.Players.Where(x => x.IsSelectingCharacter);
      foreach (var player in playersSelecting)
      {
         if (Input.IsActionJustPressed(player.PlayerInput.Right()))
         {
            _gameManager.SetToNextCharacter(player);
            ChangeBG(player);
         }
         if (Input.IsActionJustPressed(player.PlayerInput.Left()))
         {
            _gameManager.SetToPreviousCharacter(player);
            ChangeBG(player);
         }

         if (Input.IsActionJustPressed(player.PlayerInput.Fire()))
         {
            GD.Print("Selected character");
            player.IsSelectingCharacter = false;
            EmitSignal(SignalName.OnCharacterSelectionMade, player);
            GetTree().Paused = false;
         }
      }

      foreach (var player in _gameManager.Players)
      {
         if (player.GameOver)
            EmitSignal(SignalName.OnPlayerGameOver, player);
      }

      if (!_gameManager.IsGameOverScreenOn && _gameManager.Players.All(x => x.GameOver))
      {
         EmitSignal(SignalName.OnGameOver, new Array<Player>(_gameManager.Players));
      }
   }

   private void ChangeBG(Player player)
   {
      var name = player.CharactersLeftOnStage.ElementAt(player.CharacterIndex).Name;
      GD.Print(name);
      switch (name)
      {
         case "Capricorn":
            EmitSignal(SignalName.CapricornSelected, player);
            break;
         case "Scorpio":
            EmitSignal(SignalName.ScorpioSelected, player);
            break;
         case "Pisces":
            EmitSignal(SignalName.PiscesSelected, player);
            break;
         case "Sagittarius":
            EmitSignal(SignalName.SagittariusSelected, player);
            break;
      }
   }
}