using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;

using TMPro;

public class GameBoardInstance : MonoBehaviour {

  public static GameBoardInstance instance { get; private set; }

  public GameBoard player1, player2;
  public bool readyActive;
  public bool gameActive;
  public bool gameSetActive;

  [Header("Text")]
  public TextMeshProUGUI headerTextMesh;
  public string startKey;
  public string gameSetKey;

  [Header("Referneces")]
  public GameObject tilePrefab;
  public Sprite[] regular;
  public Sprite[] lit;
  public Sprite[] activators;

	[Header("AI difficulty, 0(easy)-3(hardest)")]
	public int AIDifficulty = 1;

  private void Awake() {
    instance = this;
  }

  private void Update() {
		if (GameTransition.Instance == null) return;

    var state = GameTransition.Instance.state;
    if (state == GameState.InGame && gameActive){
      var over = player1.delayState == GameBoard.DelayState.Loss || player2.delayState == GameBoard.DelayState.Loss;

      if (over){
        player1.Stop();
        player2.Stop();

				if (wasInDemo) {
					ExitGame(true);
				} else {
					StartCoroutine(EndGameTimer(5f));
				}
      }
    } else if (state == GameState.Continue){
      var response = -1;
      if (NetworkManager.inRoom){
        response = PlayerProperties.GetAllResponse();

        if (PlayerProperties.playerResponse.GetLocal() == 0){
          response = 0;
        }
      } else {
        response = PlayerProperties.playerResponse.GetLocal();
      }

      switch(response){
        // leave room
        case 0:
          ExitGame(true);
          break;
        // return to lobby or not enough players
        case 1:
        case -2:
          GameTransition.Instance.state = GameState.Lobby;
          ClearGame();
          break;
        // rematch
        case 2:
          SetupGame();
          break;
        // disconnected
        case -3:
          GameTransition.Instance.state = GameState.Menu;
          ClearGame();
          break;
        default: break;
      }
    }
  }

  public void ResetGame(){
    player1.ResetGame();
    player2.ResetGame();
  }

  public void ClearGame(){
    player1.Clear();
    player2.Clear();
  }

	public void SetupGame(bool asDemo = false){
    System.Action callback;

    ClearGame();

    if (NetworkManager.inRoom){
      var players = NetworkManager.net.CurrentRoom.Players.Values.OrderBy(p => p.ID);
      var p1 = players.ElementAt(0);
      var p2 = players.ElementAt(1);

      player1.authorityID = p1.ID;
      player2.authorityID = p2.ID;

      callback = StartMultiPlayer;
    } else {
      player1.authorityID = -1;
      player2.authorityID = -1;

			callback = StartSinglePlayer;
			if (asDemo) callback = StartDemo;
			// why isn't this legal???
			//callback = asDemo ? StartDemo : StartSinglePlayer;
		}

    player1.Setup();
    player2.Setup();

    GameTransition.Instance.state = GameState.InGame;
    StartCoroutine(StartGameTimer(3f, callback));
  }
 
  private IEnumerator StartGameTimer(float timer, System.Action callback){
    readyActive = true;

    var t = Time.time;
    while(Time.time - t <= timer){
      headerTextMesh.text = Mathf.CeilToInt(timer - (Time.time - t)).ToString();
      yield return null;
    }
    headerTextMesh.text = Localization.GetString(startKey);

    PlayerProperties.CreatePlayerHashtable();
    callback();
    gameActive = true;
    readyActive = false;

    yield return new WaitForSeconds(2f);
    headerTextMesh.text = "";
  }


  private IEnumerator EndGameTimer(float timer){
    gameActive = false;
    gameSetActive = true;

    headerTextMesh.text = Localization.GetString(gameSetKey);
    yield return new WaitForSeconds(timer);
    headerTextMesh.text = "";

    gameSetActive = false;
    GameTransition.Instance.state = GameState.Continue;
    Rematch.Instance.Setup();
  }

	static bool wasInDemo = false;
  private void StartSinglePlayer(){
    player1.StartGame();
    player2.StartGame();
		//player2.StartAI(new[] { 0.5f, 0.2f, 0.1f, 0f }[AIDifficulty]);
		player2.StartAI(new[] { 2f, 0.5f, 0.2f, 0f }[AIDifficulty]);

		wasInDemo = false;
	}

	[ContextMenu("Start Demo")]
	private void StartDemo() {
		player1.StartGame();
		player2.StartGame();
		player1.StartAI(Random.value * 0.4f);
		player2.StartAI(Random.value * 0.4f);

		wasInDemo = true;
	}

	private void StartMultiPlayer(){
    player1.StartGame();
    player2.StartGame();

		wasInDemo = false;

	}

  public void ExitGame(bool force = false){
    if (gameActive || force){
      gameActive = false;

      player1.Stop();
      player2.Stop();

      ClearGame();

      if (NetworkManager.inRoom){
        NetworkManager.net.OpLeaveRoom();
        GameTransition.Instance.state = GameState.Multiplayer;
      } else {
        GameTransition.Instance.state = GameState.Menu;
      }
    }
  }

}