using System.Collections;
using System.Collections.Generic;
using System.Linq;
using Scampz.GameJam.Assets.Scripts;
using Scampz.GameJam.Assets.Scripts.Audio;
using Scampz.GameJam.Assets.Scripts.Utilities;
using TMPro;
using UnityEngine;
using UnityEngine.InputSystem;

namespace Scampz.GameJam
{
  [RequireComponent(typeof(TextMeshProUGUI))]
  public class DialogueManager : MonoBehaviour
  {
    [SerializeField]
    private Animator _animator;
    [SerializeField]
    private TextMeshProUGUI _dialogueTextGUI;

    private Queue<string> sentences;

    public static DialogueManager Instance;

    public bool IsTalking = false;

    private InputAction confirmAction;
    private InputAction escapeAction;

    private void Awake()
    {
      if (Instance != null && Instance != this)
      {
        Destroy(this);
        return;
      }

      Instance = this;
    }

    public void Start()
    {
      escapeAction = new InputAction("cancel", binding: "<Keyboard>/escape");
      escapeAction.AddBinding("<GamePad>/buttonEast");
      escapeAction.Enable();
      confirmAction = new InputAction("confirm", binding: "<Keyboard>/x");
      confirmAction.AddBinding("<GamePad>/buttonSouth");
      confirmAction.Enable();
      sentences = new Queue<string>();
    }

    private void OnDisable()
    {
      confirmAction.Disable();
      escapeAction.Disable();
    }

    private void Update()
    {
      if (IsTalking && escapeAction.triggered)
        EndDialogue();
    }

    public void StartDialogue(Dialogue dialogue, TextMeshProUGUI textMeshProUGUI)
    {
      _dialogueTextGUI = textMeshProUGUI;
      _animator.SetBool("IsOpen", true);
      IsTalking = true;
      sentences.Clear();
      foreach (var sentence in dialogue.Sentences)
        sentences.Enqueue(sentence);

      DisplayNextSentence(dialogue);
    }

    private IEnumerator PlayAudioCoroutine(SFXClip soundEffect)
    {
      yield return null;
      SFXManager.Instance.PlaySoundEffect(soundEffect.audioClip.name);
      yield return null;
    }

    public void DisplayNextSentence(Dialogue dialogue)
    {
      if (!sentences.Any())
      {
        EndDialogue();
        StopAllCoroutines();
        return;
      }

      var sentence = sentences.Dequeue();
      StopAllCoroutines();
      StartCoroutine(TypeSentence(sentence, dialogue));
      StartCoroutine(nameof(PlayAudioCoroutine), dialogue.SoundEffect);
    }

    private IEnumerator TypeSentence(string sentence, Dialogue dialogue)
    {

      _dialogueTextGUI.text = string.Empty;
      foreach (var letter in sentence.ToCharArray())
      {
        _dialogueTextGUI.text += letter;
        yield return null;
        yield return new WaitForSeconds(dialogue.TextSpeed);
      }

      yield return null;
      SFXManager.Instance.StopSoundEffect();
      yield return new WaitForSeconds(0.3f);
      yield return new WaitForKeyDown(confirmAction);
      SFXManager.Instance.PlaySoundEffect(SoundEffectName.Ok);
      DisplayNextSentence(dialogue);
    }

    private void EndDialogue()
    {
      StopAllCoroutines();
      _animator.SetBool("IsOpen", false);
      _dialogueTextGUI.text = string.Empty;
      IsTalking = false;
      SFXManager.Instance.StopSoundEffect();
      var player = GameObject.FindGameObjectWithTag("Player");
      var inputController = player.GetComponent<CharacterInputController>();
      inputController.EnableActions();
    }
  }
}