package com.YuyeTech.HeartRate;

import android.app.Activity;
import android.app.admin.DevicePolicyManager;
import android.content.ComponentName;
import android.content.Context;
import android.util.Log;
import android.view.WindowManager;

import com.ble.mylockview.admin.KioskDeviceAdminReceiver;

/**
 * Kiosk 辅助类 - 提供禁用锁屏、屏幕常亮等功能
 * Created on 2026/1/22.
 */
public class KioskHelper {
    
    private static final String TAG = "KioskHelper";
    
    /**
     * 仅用 Context 禁用锁屏（Device Owner 时生效）。
     * 用于在 Application 或 BootReceiver 中尽早调用，避免开机自启时处于锁屏阶段导致
     * 输入法（IME）无法挂载或显示、被 Keyguard 层级遮挡的问题。
     * 调用时机：Application.onCreate() 或 BOOT_COMPLETED/LOCKED_BOOT_COMPLETED 收到时。
     */
    public static void disableKeyguardIfOwner(Context context) {
        if (context == null) {
            Log.w(TAG, "Context is null, cannot disable keyguard");
            return;
        }
        try {
            Context app = context.getApplicationContext();
            DevicePolicyManager dpm = (DevicePolicyManager)
                    app.getSystemService(Context.DEVICE_POLICY_SERVICE);
            ComponentName adminComponent = new ComponentName(app, KioskDeviceAdminReceiver.class);
            if (dpm != null && dpm.isDeviceOwnerApp(app.getPackageName())) {
                dpm.setKeyguardDisabled(adminComponent, true);
                Log.d(TAG, "✅ 锁屏已禁用（Application/开机阶段）");
            }
        } catch (Exception e) {
            Log.e(TAG, "disableKeyguardIfOwner 失败", e);
        }
    }
    
    /**
     * 禁用锁屏和解锁屏幕（在 Activity 创建时调用）
     */
    public static void disableLockScreen(Activity activity) {
        if (activity == null) {
            Log.w(TAG, "Activity is null, cannot disable lock screen");
            return;
        }
        
        try {
            // 1. 解锁屏幕（如果当前是锁定状态）
            activity.getWindow().addFlags(
                WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD |
                WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED |
                WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
            );
            
            // 2. 作为 Device Owner 禁用锁屏
            DevicePolicyManager dpm = (DevicePolicyManager) 
                activity.getSystemService(Context.DEVICE_POLICY_SERVICE);
            ComponentName adminComponent = new ComponentName(
                activity, 
                KioskDeviceAdminReceiver.class
            );
            
            if (dpm != null && dpm.isDeviceOwnerApp(activity.getPackageName())) {
                // 禁用键盘锁（锁屏）
                dpm.setKeyguardDisabled(adminComponent, true);
                Log.d(TAG, "✅ 锁屏已禁用");
            } else {
                Log.w(TAG, "⚠️ 不是 Device Owner，无法禁用锁屏");
            }
            
        } catch (Exception e) {
            Log.e(TAG, "禁用锁屏失败", e);
        }
    }
    
    /**
     * 保持屏幕常亮（常亮会加大耗电，临时方案下不调用）
     */
    public static void keepScreenOn(Activity activity) {
        if (activity == null) {
            Log.w(TAG, "Activity is null, cannot keep screen on");
            return;
        }
        
        try {
            activity.getWindow().addFlags(
                WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
            );
            Log.d(TAG, "✅ 屏幕保持常亮");
        } catch (Exception e) {
            Log.e(TAG, "设置屏幕常亮失败", e);
        }
    }
    
    /**
     * 不设置常亮：清除 FLAG_KEEP_SCREEN_ON，由系统休眠时间（如 50 分钟）控制息屏，降低耗电。
     * 临时方案：在 Pad 系统设置中提前设置休眠时间（如 50 分钟），再安装运行 App。
     */
    public static void clearKeepScreenOn(Activity activity) {
        if (activity == null) {
            Log.w(TAG, "Activity is null, cannot clear keep screen on");
            return;
        }
        try {
            activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
            Log.d(TAG, "✅ 已关闭常亮，跟随系统休眠时间");
        } catch (Exception e) {
            Log.e(TAG, "清除常亮标志失败", e);
        }
    }
    
    /**
     * 启用锁屏（恢复系统默认行为）
     */
    public static void enableLockScreen(Activity activity) {
        if (activity == null) {
            Log.w(TAG, "Activity is null, cannot enable lock screen");
            return;
        }
        
        try {
            DevicePolicyManager dpm = (DevicePolicyManager) 
                activity.getSystemService(Context.DEVICE_POLICY_SERVICE);
            ComponentName adminComponent = new ComponentName(
                activity, 
                KioskDeviceAdminReceiver.class
            );
            
            if (dpm != null && dpm.isDeviceOwnerApp(activity.getPackageName())) {
                dpm.setKeyguardDisabled(adminComponent, false);
                Log.d(TAG, "✅ 锁屏已启用");
            }
            
        } catch (Exception e) {
            Log.e(TAG, "启用锁屏失败", e);
        }
    }
}