using UnityEngine;

// 内网联调：发现失败时的开发机 IP 输入框(纯 IMGUI，风格同热更层 DevServerSwitchUI)。
// 只负责输入与三态状态机，不做网络/文件 IO——探测与写配置由 LoadDll.CoLocalDiscoverThenDownload 编排：
// [确定] → Confirmed，外部拿 InputIp 去探测；失败则外部调 ResetToWaiting(错误文案) 拨回弹框；
// [跳过] → Skipped，外部走 127.0.0.1 回退。
public sealed class DevServerPrompt : MonoBehaviour
{
    public enum PromptState { Waiting, Confirmed, Skipped }

    public PromptState State { get; private set; } = PromptState.Waiting;
    public string InputIp = "";
    public string Error = "";   // 非空则红字显示

    // 外部探测失败后调用：显示错误并回到可输入状态。
    public void ResetToWaiting(string error)
    {
        Error = error ?? "";
        State = PromptState.Waiting;
    }

    private void OnGUI()
    {
        if (State != PromptState.Waiting) return;
        const int W = 560, H = 190;
        GUILayout.BeginArea(new Rect((Screen.width - W) / 2, (Screen.height - H) / 3, W, H), GUI.skin.box);
        GUILayout.Label("内网发现失败：请输入开发机 IP（网关须 --lan --devToken xw-dev）");
        InputIp = GUILayout.TextField(InputIp ?? "", GUILayout.Height(44));
        if (!string.IsNullOrEmpty(Error))
        {
            GUI.color = new Color(1f, 0.4f, 0.3f);
            GUILayout.Label(Error);
            GUI.color = Color.white;
        }
        GUILayout.FlexibleSpace();
        GUILayout.BeginHorizontal();
        if (GUILayout.Button("确定", GUILayout.Height(44))) { Error = ""; State = PromptState.Confirmed; }
        if (GUILayout.Button("跳过", GUILayout.Height(44), GUILayout.Width(120))) State = PromptState.Skipped;
        GUILayout.EndHorizontal();
        GUILayout.EndArea();
    }
}