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

namespace AlicizaX.UI.Runtime
{
    [DisallowMultipleComponent]
    public sealed class UIAnimationFlowTransition : MonoBehaviour, IUITransitionPlayer
    {
#if ALICIZAX_UI_ANIMATION_SUPPORT
        [SerializeField] private AnimationFlow.Runtime.AnimationFlow animationFlow;
        [SerializeField] private string openClip = "Open";
        [SerializeField] private string closeClip = "Close";
#endif

        public UniTask PlayOpenAsync(CancellationToken cancellationToken = default)
        {
#if ALICIZAX_UI_ANIMATION_SUPPORT
            return PlayAsync(openClip, cancellationToken);
#else
            return UniTask.CompletedTask;
#endif
        }

        public UniTask PlayCloseAsync(CancellationToken cancellationToken = default)
        {
#if ALICIZAX_UI_ANIMATION_SUPPORT
            return PlayAsync(closeClip, cancellationToken);
#else
            return UniTask.CompletedTask;
#endif
        }

        public void Stop()
        {
#if ALICIZAX_UI_ANIMATION_SUPPORT
            ResolveAnimationFlow()?.Stop();
#endif
        }

#if ALICIZAX_UI_ANIMATION_SUPPORT
        private UniTask PlayAsync(string clipName, CancellationToken cancellationToken)
        {
            if (cancellationToken.IsCancellationRequested || string.IsNullOrWhiteSpace(clipName))
            {
                return UniTask.CompletedTask;
            }

            AnimationFlow.Runtime.AnimationFlow flow = ResolveAnimationFlow();
            return flow == null ? UniTask.CompletedTask : flow.PlayAsync(clipName);
        }

        private AnimationFlow.Runtime.AnimationFlow ResolveAnimationFlow()
        {
            if (animationFlow == null)
            {
                animationFlow = GetComponent<AnimationFlow.Runtime.AnimationFlow>();
            }

            return animationFlow;
        }

#if UNITY_EDITOR
        private void OnValidate()
        {
            if (animationFlow == null)
            {
                animationFlow = GetComponent<AnimationFlow.Runtime.AnimationFlow>();
            }
        }
#endif
#endif
    }
}