using System;
using System.Collections.Generic;
using Cysharp.Threading.Tasks;
using UnityEngine;

namespace DanieleMarotta.RiversongCodeShowcase
{
    public class OnboardingPanelUIController : UIControllerSystem<OnboardingPanelUIView>, IDisposable, IUpdatable
    {
        [InjectService]
        private ISignalBus _signalBus;

        [InjectService]
        private GameConfig _config;

        [InjectService]
        private ISoundPlayer _soundPlayer;

        private readonly Queue<OnboardingEvents> _completedEvents = new();

        private bool _isWaitingToShowMessage;

        private float _currentMessageTime;

        public OnboardingPanelUIController(IServiceLocator serviceLocator) : base(serviceLocator)
        {
        }

        protected override OnboardingPanelUIView View => UIRoot.GetView<OnboardingPanelUIView>();

        public override async UniTask InitializeAsync()
        {
            await base.InitializeAsync();

            _signalBus.Subscribe<OnboardingEventCompleted>(OnOnboardingEventCompleted);
        }

        public void Dispose()
        {
            _signalBus.Unsubscribe<OnboardingEventCompleted>(OnOnboardingEventCompleted);
        }

        public void Update()
        {
            if (View.IsShowingAnyMessage())
            {
                _currentMessageTime += Time.unscaledDeltaTime;
                if (_currentMessageTime > _config.Onboarding.MessageDuration) View.CloseCurrentMessage();
                return;
            }

            _currentMessageTime = 0;

            if (_isWaitingToShowMessage || !_completedEvents.TryDequeue(out var completedEvent)) return;

            _ = ShowMessageAsync(completedEvent);
        }

        private async UniTask ShowMessageAsync(OnboardingEvents completedEvent)
        {
            _isWaitingToShowMessage = true;

            await UniTask.WaitForSeconds(1, true);

            View.ShowMessage(GetMessage(completedEvent));

            _soundPlayer.Play(SystemSoundId.OnboardingMessage);

            _isWaitingToShowMessage = false;
        }

        private string GetMessage(OnboardingEvents completedEvent)
        {
            foreach (var entry in _config.Onboarding.Messages.Entries)
            {
                if (entry.Event != completedEvent) continue;
                return entry.Text ?? $"Unknown Event {completedEvent}";
            }

            return $"Unknown Event {completedEvent}";
        }

        private void OnOnboardingEventCompleted(OnboardingEventCompleted signal)
        {
            _completedEvents.Enqueue(signal.Event);
        }
    }
}