using System;
using System.Collections.Generic;
using ZXKFramework;

public class TaskSequence
{
    //任务序列开始回调
    public Action onStart;
    //任务序列完成回调
    public Action onFinish;
    //任务步骤列表
    private List<TaskProcedure> taskList;
    public TaskSequence(Action onStart,Action onFinish)
    {
        taskList = new List<TaskProcedure>();
        this.onFinish = onFinish;
        this.onStart = onStart;
    }
    public TaskSequence Add(float delayTime, Action<TaskProcedure> taskFunc)
    {
        TaskProcedure task = new();
        task.onTaskFunc = (taskParam) =>
        {
            Game.Instance.IEnumeratorManager.Run(delayTime, () =>
            {
                taskFunc(task);
                taskParam.onComplete?.Invoke();
            });
        };
        taskList.Add(task);
        return this;
    }
    public TaskSequence Run()
    {
        onStart?.Invoke();
        for (int i = 0; i < taskList.Count - 1; i++)
        {
            int index = i;
            int nextIndex = index + 1;
            taskList[index].onComplete = () => taskList[nextIndex].onTaskFunc(taskList[nextIndex]);
        }
        if (taskList.Count > 0)
        {
            taskList[taskList.Count - 1].onComplete = onFinish;
            taskList[0].onTaskFunc(taskList[0]);
        }
        return this;
    }

    public void Clear()
    {
        onStart = null;
        onFinish = null;
        foreach (TaskProcedure task in taskList)
        {
            task.Dispose();
        }
        taskList.Clear();
    }
}

/// <summary>
/// 任务步骤
/// </summary>
public class TaskProcedure
{
    //任务步骤具体内容
    public Action<TaskProcedure> onTaskFunc;
    //该步骤完成回调
    public Action onComplete;
    public void Dispose()
    {
        onTaskFunc = null;
        onComplete = null;
    }
}