import 'dart:convert';
import 'dart:developer';

import 'package:awesome_notifications/awesome_notifications.dart';
import 'package:flutter/cupertino.dart';

import '../page/child/ChatPage.dart';
import '../page/child/UpdateCheckPage.dart';
import 'NotifyImageCache.dart';
import 'RouteAnimation.dart';
import 'StringTool.dart';

enum NotifyChannel { update, ad, message }

class Notify {
  static BuildContext? _context;

  /// 初始化（必须在 main() 中调用一次）
  static Future<void> init() async {
    await AwesomeNotifications().initialize(null, _channels, debug: true);

    bool isAllowed = await AwesomeNotifications().isNotificationAllowed();
    if (!isAllowed) {
      await AwesomeNotifications().requestPermissionToSendNotifications();
    }

    // 直接传静态方法
    AwesomeNotifications().setListeners(
      onActionReceivedMethod: _onActionReceivedMethod,
    );
  }

  /// 必须是静态或顶级方法
  static Future<void> _onActionReceivedMethod(ReceivedAction action) async {
    onClick(action.payload);
  }

  static void setBuildContext(BuildContext context) {
    _context = context;
  }

  static List<NotificationChannel> get _channels => [
    NotificationChannel(
      channelKey: NotifyChannel.update.name,
      channelName: '更新通知',
      channelDescription: '新版本通知',
      importance: NotificationImportance.Default,
    ),
    NotificationChannel(
      channelKey: NotifyChannel.ad.name,
      channelName: '推广',
      channelDescription: '新品推广',
      importance: NotificationImportance.High,
    ),
    NotificationChannel(
      channelKey: NotifyChannel.message.name,
      channelName: '新消息',
      channelDescription: '新消息通知',
      importance: NotificationImportance.Max,
    ),
  ];

  /// 发送通知
  static Future<void> showNotification({
    required NotifyChannel channel,
    required String title,
    required String body,
    String? smallIcon,
    String? bigPicture,
    Map<String, String>? payload,
  }) async {
    String? finalIcon = smallIcon;
    String? finalBigPic = bigPicture;

    // ✅ 如果是网络图，优先使用缓存
    if (smallIcon != null && smallIcon.startsWith('http')) {
      finalIcon = await NotifyImageCache.getCachedImage(smallIcon) ?? smallIcon;
    }

    if (bigPicture != null && bigPicture.startsWith('http')) {
      finalBigPic =
          await NotifyImageCache.getCachedImage(bigPicture) ?? bigPicture;
    }
    // 2. 转成本地文件路径格式
    if (finalIcon != null && finalIcon.startsWith('/')) {
      finalIcon = 'file://$finalIcon';
    }
    if (finalBigPic != null && finalBigPic.startsWith('/')) {
      finalBigPic = 'file://$finalBigPic';
    }
    String text = StringTool.stripMarkdown(body);
    text = text.length > 25 ? text.substring(0, 24) + "..." : text;
    await AwesomeNotifications().createNotification(
      content: NotificationContent(
        id: DateTime.now().millisecondsSinceEpoch.remainder(100000),
        channelKey: channel.name,
        title: title,
        body: text,
        largeIcon: finalIcon,
        bigPicture: finalBigPic,
        notificationLayout: finalBigPic != null
            ? NotificationLayout.BigPicture
            : NotificationLayout.Default,
        payload: payload,
      ),
    );
  }

  /// 清除全部消息
  static Future<void> clearAll() async {
    await AwesomeNotifications().cancelAll();
  }

  static void onClick(Map<String, String?>? payload) {
    log(payload.toString());

    WidgetsBinding.instance.addPostFrameCallback((_) {
      switch (payload?["type"]) {
        case "NEW_MESSAGE":
          if (_context != null) {
            Navigator.push(
              _context!,
              RouteAnimation(
                ChatPage(
                  roomId: payload!["roomId"]!,
                  robotAvatar: payload["avatar"]!,
                  robotName: payload["name"]!,
                ),
                Offset(1, 0),
              ),
            );

            break;
          }
        case "NEW_VERSION":
          {
            if (_context != null) {
              Navigator.push(
                _context!,
                RouteAnimation(UpdateCheckPage(), Offset(1, 0)),
              );
            }
            break;
          }
      }
    });
  }
}