using System;
using Continentis.MainGame.Character;
using SLSFramework.General;
using UniRx;
using UnityEngine;

namespace Continentis.MainGame.Commands
{
    public class Cmd_PlayAnimation : CommandBase
    {
        private readonly CombatCharacterViewBase characterView;
        private readonly Animator animator;
        private bool waitForFinish;
        private float overrideDuration;
        private string stateName;
        private int layer;
        
        public Cmd_PlayAnimation(CombatCharacterViewBase characterView, string stateName, 
            bool waitForFinish = false, float overrideDuration = -1, int layer = 0) : base(null)
        {
            this.characterView = characterView;
            this.animator = characterView.animator;
            this.stateName = stateName;
            this.waitForFinish = waitForFinish;
            this.overrideDuration = overrideDuration;
            this.layer = layer;
        }

        protected override IObservable<Unit> OnExecute(CommandContext outerContext)
        {
            if (animator == null)
            {
                Debug.LogWarning("Animator or stateName is null or empty.");
                return Observable.Return(Unit.Default);
            }

            if (!animator.HasState(layer, Animator.StringToHash(stateName)))
            {
                if (!animator.HasState(layer, Animator.StringToHash("Default")))
                {
                    Debug.LogWarning($"Animator does not have state: {stateName}, and Default state is also missing.");
                    return Observable.Return(Unit.Default);
                }
                
                stateName = "Default"; // Fallback to Default state
                Debug.Log($"Animator does not have state: {stateName}. Falling back to Default state.");
            }

            animator.CrossFade(stateName, 0f, layer, 0f);
            if (waitForFinish)
            {
                float animationDuration = overrideDuration >= 0 ? overrideDuration : characterView.animationClips[stateName].length;
                return Observable.Timer(TimeSpan.FromSeconds(animationDuration)).AsUnitObservable();
            }
            else
            {
                return Observable.Return(Unit.Default);
            }
        }
    }
}