using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using Cysharp.Threading.Tasks;
using NodeCanvas.DialogueTrees;
using UnityEngine;

namespace Net.Project.B.Dialogue
{
    public class DialogueMiddlewareNodeCanvasDialogueTree : IDisposable

    {
        private readonly IDialogueService _dialogueService;

        public DialogueMiddlewareNodeCanvasDialogueTree(IDialogueService dialogueService)
        {
            _dialogueService = dialogueService;
            DialogueTree.OnSubtitlesRequest += OnSubtitlesRequest;
            _dialogueService.OnDialogueStart += OnDialogueStart;
            DialogueTree.OnMultipleChoiceRequest += OnMultipleChoiceRequest;
        }

        private UniTask OnDialogueStart(IDialogueData arg)
        {
            if (string.IsNullOrEmpty(arg.VoicePath))
            {
                return UniTask.Delay(5000);
            }

            return UniTask.CompletedTask;
        }

        private async void OnMultipleChoiceRequest(MultipleChoiceRequestInfo obj)
        {
            var chooses = obj.options.Select(pair => new DialogueChoice()
            {
                Enabled = true,
                Index = pair.Value,
                Text = pair.Key.text,
                Remark = pair.Key.meta
            }).OfType<IDialogueChoice>().ToArray();
            var index = await _dialogueService.CreateDialogue(null, chooses);

            if (DialogueTree.currentDialogue)
                obj.SelectOption.Invoke(index);
        }

        private async void OnSubtitlesRequest(SubtitlesRequestInfo obj)
        {
            await _dialogueService.CreateDialogue(new DialogueData()
            {
                Text = obj.statement.text.Replace("\r",string.Empty),
                ActorIdentity = obj.actor.transform.gameObject.GetInstanceID(),
                VoicePath = obj.statement.audio?.name
            });

            if (DialogueTree.currentDialogue)
                obj.Continue.Invoke();
        }

        public void Dispose()
        {
            DialogueTree.OnSubtitlesRequest -= OnSubtitlesRequest;
            DialogueTree.OnMultipleChoiceRequest -= OnMultipleChoiceRequest;
            _dialogueService.OnDialogueStart -= OnDialogueStart;
        }
    }
}