using UnityEngine;
using TMPro;
using System.Collections;
using Yarn.Unity;

public class MessageBox : MonoBehaviour
{
    public static MessageBox Instance { get; private set; }
    public TMP_Text state;  // 显示状态的TextMeshPro组件
    public TMP_Text text;   // 显示消息的TextMeshPro组件
    private void Awake()
    {
        // 确保单例模式
        if (Instance != null && Instance != this)
        {
            Destroy(gameObject);
        }
        else
        {
            Instance = this;
            DontDestroyOnLoad(gameObject); // 可选：保持在场景加载之间
        }
    }
    // Yarn Command处理方法
    [YarnCommand("messagebox")]
    public void HandleMessageBoxCommand(string type, string message)
    {
        switch (type.ToLower())
        {
            case "warning":
                SetWarning(message);
                break;
            case "normal":
                SetNormal(message);
                break;
            case "null":
                SetNull();
                break;
            default:
                Debug.LogError("Invalid message type for messagebox command: " + type);
                break;
        }
    }
    private void Start()
    {
        SetNull();
    }

    // 设置为Warning状态
    private void SetWarning(string message)
    {
        state.text = "WARNING";
        state.color = Color.red; // 红色
        text.text = message;
        text.color = Color.white; // 默认文本颜色
        StartCoroutine(FlashWarning()); // 开始闪烁效果
    }

    // 设置为Normal状态
    private void SetNormal(string message)
    {
        state.text = "NORMAL";
        state.color = new Color(1.0f, 0.55f, 0.0f); // 琥珀色
        text.text = message;
        text.color = Color.white; // 默认文本颜色
        StopCoroutine(FlashWarning()); // 停止闪烁效果（如果正在闪烁）
    }

    // 设置为Null状态
    public void SetNull()
    {
        state.text = "NO SIGNAL";
        state.color = Color.blue; // 蓝色
        text.text = string.Empty;
        text.color = Color.white; // 默认文本颜色
        StopCoroutine(FlashWarning()); // 停止闪烁效果（如果正在闪烁）
    }

    // 闪烁警告效果
    private IEnumerator FlashWarning()
    {
        for (int i = 0; i < 3; i++)
        {
            state.enabled = false;
            yield return new WaitForSeconds(0.5f); // 闪烁间隔
            state.enabled = true;
            yield return new WaitForSeconds(0.5f); // 闪烁间隔
        }
        state.enabled = true; // 确保闪烁后状态仍然可见
    }
}