import 'dart:io';

import 'package:device_info_plus/device_info_plus.dart';
import 'package:get/get.dart';
import 'package:loopin/IM/im_service.dart';
import 'package:loopin/components/my_confirm.dart';
import 'package:permission_handler/permission_handler.dart';

class Permissions {
  // 请求视频访问权限
  static Future<bool> requestVideoPermission() async {
    if (Platform.isAndroid) {
      final deviceInfoPlugin = DeviceInfoPlugin();
      final androidInfo = await deviceInfoPlugin.androidInfo;
      final sdkInt = androidInfo.version.sdkInt;

      if (sdkInt >= 33) {
        // Android 13 及以上
        final status = await Permission.videos.request();
        return status.isGranted;
      } else {
        // Android 12 及以下
        final status = await Permission.storage.request();
        return status.isGranted;
      }
    } else if (Platform.isIOS) {
      final status = await Permission.photos.request();
      return status.isGranted || status.isLimited;
    } else {
      return false;
    }
  }

  // 请求相册权限
  static Future<bool> requestPhotoPermission() async {
    if (Platform.isAndroid) {
      final deviceInfoPlugin = DeviceInfoPlugin();
      final androidInfo = await deviceInfoPlugin.androidInfo;
      final sdkInt = androidInfo.version.sdkInt;
      logger.w(sdkInt);
      if (sdkInt >= 33) {
        // Android 13 及以上
        final status = await Permission.photos.request();
        // return status.isGranted;
        return handleStatus(status, isAndroid: true);
      } else {
        // Android 12 及以下
        final status = await Permission.storage.request();
        // return status.isGranted;
        return handleStatus(status, isAndroid: true);
      }
    } else if (Platform.isIOS) {
      final status = await Permission.photos.request();
      logger.w('iOS photos = $status');
      // return status.isGranted || status.isLimited;
      return handleStatus(status, isAndroid: false);
    } else {
      return false;
    }
  }

  // 请求相机权限
  static Future<bool> requestCameraPermission() async {
    return await _checkAndRequest(Permission.camera);
  }

  // 请求麦克风权限
  static Future<bool> requestMicrophonePermission() async {
    return await _checkAndRequest(Permission.microphone);
  }

  // 请求本地存储权限
  static Future<bool> requestStoragePermission() async {
    return await _checkAndRequest(Permission.storage);
  }

  // 封装公共权限处理逻辑
  static Future<bool> _checkAndRequest(Permission permission) async {
    final status = await permission.status;

    if (status.isGranted) return true;

    final result = await permission.request();

    if (result.isGranted) return true;

    if (result.isPermanentlyDenied) {
      // 永久拒绝 只能去设置
      return false;
    } else {
      // 临时拒绝  提示
      Get.snackbar('权限请求失败', '无法访问，请授权对应权限后重试');
    }

    return false;
  }

  /// 处理权限状态
  static bool handleStatus(PermissionStatus status, {required bool isAndroid}) {
    logger.w("当前权限状态 = $status");
    logger.e(status.isPermanentlyDenied);
    if (status.isGranted) {
      return true;
    }

    if (!isAndroid) {
      // iOS 独有的情况
      if (status.isLimited) {
        logger.w("iOS 相册权限 = 仅限部分照片 (Limited)");
        return true; // Limited 状态下也能用，但受限制
      }
      if (status.isPermanentlyDenied) {
        // debug 模式或已授权的真机，有时误判为 permanentlyDenied
        // 直接尝试访问，或者返回 true
        logger.w("可能已授权，直接允许访问");
        return true;
      }
    }

    if (status.isDenied) {
      logger.w("相册权限被拒绝（可再次请求）");
      return false;
    }

    if (status.isPermanentlyDenied || status.isRestricted) {
      logger.w("相册权限被永久拒绝，需要跳转到设置页");
      return false;
    }

    return false;
  }

  // 跳转设置的提示弹窗
  static void showPermissionDialog(String name) async {
    final confirmed = await ConfirmDialog.show(
      title: '需要$name权限',
      content: '请前往系统设置中手动开启权限',
      confirmText: '去设置',
    );
    if (confirmed == true) {
      await openAppSettings();
    }
  }
}