using System;
using UnityEngine;

namespace SK.Framework
{
    public enum StepResult
    {
        None,
        Correct,
        Error,
        Skipped
    }
    public class TaskStep
    {
        public int StepId;
        public string Description;

        public event Action<TaskStep> OnStepStarted;
        public event Action<TaskStep> OnStepHint;
        public event Action<TaskStep> OnStepCompleted;
        public event Action<TaskStep> OnStepError;
        public event Action<TaskStep> OnStepSkipped;

        private bool _started;
        private bool _completed;
        private bool _isError;

        public bool IsError => _isError;
        public StepResult Result { get; private set; } = StepResult.None;
        public void Start(bool allowHint)
        {
            if (_started)
                return;

            _started = true;
            Debug.Log($"[Step] 开始 {StepId}: {Description}");

            OnStepStarted?.Invoke(this);

            if (allowHint)
                OnStepHint?.Invoke(this);
        }

        /// <summary>
        /// 被 TaskData 调用，记录本 Step 的完成状态
        /// </summary>
        public void Complete(bool isError)
        {
            if (_completed)
                return;

            _completed = true;
            _isError = isError;

            if (isError)
            {
                Debug.Log($"[Step] 错误 {StepId}");
                CompleteInternal(StepResult.Error);
                OnStepError?.Invoke(this);
            }
            else
            {
                Debug.Log($"[Step] 正确 {StepId}");
                CompleteInternal(StepResult.Correct);
                OnStepCompleted?.Invoke(this);
            }
        }

        public void Skip()
        {
            CompleteInternal(StepResult.Skipped);
            OnStepSkipped?.Invoke(this);
        }

        public void Reset()
        {
            _started = false;
            _completed = false;
            _isError = false;
        }
        private void CompleteInternal(StepResult result)
        {
            if (_completed)
                return;

            _completed = true;
            Result = result;
        }



    }
}