using System.Collections;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;
using UnityEngine.Video;

public class ServerWorkMessageReplyExitPanel : MonoBehaviour
{
    public static ServerWorkMessageReplyExitPanel Instance;

    [Header("影片播放")]
    public VideoPlayer videoPlayer;
    public RawImage videoDisplay;

    // ⭐ 新增：雙重檢查旗標
    private bool isVideoFinished = false;
    private bool isSignalReceived = false;

    private void Awake()
    {
        Instance = this;
    }

    void Start()
    {
        SetupVideoPlayer();
        // ⭐ 重置狀態，確保每次啟動都是新的檢查
        isVideoFinished = false;
        isSignalReceived = false;
    }

    public void play()
    {
        if (videoPlayer != null)
        {
            videoPlayer.Play();
        }
    }

    public void stop()
    {
        if (videoPlayer != null)
        {
            videoPlayer.Stop();
        }
    }

    void SetupVideoPlayer()
    {
        if (videoPlayer != null)
        {
            // 設置影片結束事件，確保只訂閱一次
            videoPlayer.loopPointReached -= OnVideoFinished;
            videoPlayer.loopPointReached += OnVideoFinished;

            // 設置影片顯示
            if (videoDisplay != null)
            {
                videoPlayer.targetTexture = null;
                videoPlayer.renderMode = VideoRenderMode.RenderTexture;
                RenderTexture rt = new RenderTexture(1920, 1080, 24);
                videoPlayer.targetTexture = rt;
                videoDisplay.texture = rt;
            }
        }
    }

    void OnVideoFinished(VideoPlayer vp)
    {
        Debug.Log("影片播放完成");
        // ⭐ 設置影片完成旗標
        isVideoFinished = true;
        // ⭐ 嘗試切換場景
        TryProceedToNextStep();
    }

    // ⭐ 新增：接收 Client 訊號的方法 (由 NetworkMessageHandler 呼叫)
    public void ReceiveClientSignal()
    {
        Debug.Log("收到 Client 的 Exit 訊號。");
        // ⭐ 設置訊號接收旗標
        isSignalReceived = true;
        // ⭐ 嘗試切換場景
        TryProceedToNextStep();
    }

    // ⭐ 核心邏輯：只有在兩個條件都滿足時才切換場景
    private void TryProceedToNextStep()
    {
        // 只有當影片播放完成 (isVideoFinished) 且 Client 訊號已收到 (isSignalReceived) 時，才執行下一步驟。
        if (isVideoFinished && isSignalReceived)
        {
            Debug.Log("雙重檢查通過：影片和訊號皆已完成，切換到 Step 10。");
            if (ServerWorkSceneController.Instance != null)
            {
                ServerWorkSceneController.Instance.processStep(10);
            }
        }
        else
        {
            Debug.Log($"等待另一個條件完成。狀態：影片完成={isVideoFinished}, 訊號接收={isSignalReceived}");
        }
    }
}