import 'package:flutter/foundation.dart';
import 'package:get/get.dart';
import 'package:router/my_router_history_manager.dart';


enum LaunchModel {
  standard, //默认模式
  singleTop, //检查栈顶
  singleTask, //检查全栈
}

extension GetRouterNavigation on GetInterface {
  /// 查询指定的RouterName是否存在自己的路由栈中
  bool isRouteExist(String routerName) {
    return MyRouterHistoryManager().isRouteExist(routerName);
  }

  /// 查询指定的RouterName是否存在自己的路由栈顶
  bool isTopRouteExist(String routerName) {
    return MyRouterHistoryManager().isTopRouteExist(routerName);
  }

  /// 跳转页面SingleTask模式
  void _toNamedSingleTask(
    String routerName, {
    dynamic arguments,
    bool preventDuplicates = false,
    void Function(dynamic value)? cb,
    Map<String, String>? parameters,
  }) {
    if (isRouteExist(routerName)) {
      Get.until((route) => route.settings.name == routerName);
    } else {
      Get.offNamed(
        routerName,
        arguments: arguments,
        parameters: parameters,
        preventDuplicates: preventDuplicates,
      )?.then((value) => {
            if (cb != null) {cb(value)}
          });
    }
  }

  /// 跳转页面SingleTop模式
  void _toNamedSingleTop(
    String routerName, {
    dynamic arguments,
    bool preventDuplicates = false,
    void Function(dynamic value)? cb,
    Map<String, String>? parameters,
  }) async {
    if (isTopRouteExist(routerName)) {
      Get.until((route) => route.settings.name == routerName);
    } else {
      Get.toNamed(
        routerName,
        arguments: arguments,
        parameters: parameters,
        preventDuplicates: preventDuplicates,
      )?.then((value) => {
            if (cb != null) {cb(value)}
          });
    }
  }

  /// 默认的跳转方式，带自己的回调
  void _toNamedStandard(
    String routerName, {
    dynamic arguments,
    bool preventDuplicates = false,
    void Function(dynamic value)? cb,
    Map<String, String>? parameters,
  }) {
    Get.toNamed(
      routerName,
      arguments: arguments,
      parameters: parameters,
      preventDuplicates: preventDuplicates,
    )?.then((value) => {
          if (cb != null) {cb(value)}
        });
  }

  /*
   * 启动新页面
   */
  void start(
    String routerName, {
    LaunchModel launchModel = LaunchModel.standard,
    dynamic arguments,
    bool preventDuplicates = false, //默认多实例
    void Function(dynamic value)? cb,
    Map<String, String>? parameters,
  }) {
    //检查栈顶
    if (launchModel == LaunchModel.singleTop) {
      _toNamedSingleTop(
        routerName,
        arguments: arguments,
        cb: cb,
        parameters: parameters,
        preventDuplicates: preventDuplicates,
      );
      //检查全栈
    } else if (launchModel == LaunchModel.singleTask) {
      _toNamedSingleTask(
        routerName,
        arguments: arguments,
        cb: cb,
        parameters: parameters,
        preventDuplicates: preventDuplicates,
      );
      //默认启动
    } else {
      _toNamedStandard(
        routerName,
        arguments: arguments,
        cb: cb,
        parameters: parameters,
        preventDuplicates: preventDuplicates,
      );
    }
  }

  /*
   * 关闭当前启动新页面
   */
  void startWithPop(
    String routerName, {
    dynamic arguments,
    bool preventDuplicates = false, //默认多实例
    void Function(dynamic value)? cb,
    Map<String, String>? parameters,
  }) {
    Get.offNamed(
      routerName,
      arguments: arguments,
      parameters: parameters,
      preventDuplicates: preventDuplicates,
    )?.then((value) => {
          if (cb != null) {cb(value)}
        });
  }

  /*
   * 关闭页面,调用Get的back方法
   */
  void pop<T>({
    T? result,
    bool closeOverlays = false,
    bool canPop = true,
    int? id,
  }) {
    Get.back(result: result, closeOverlays: closeOverlays, canPop: canPop, id: id);
  }

  /// 通知栏点击跳转到指定页面
  void toNamedByNotification(
    String routerName, {
    dynamic arguments,
    void Function(dynamic value)? cb,
    Map<String, String>? parameters,
  }) async {
    if (MyRouterHistoryManager().routeNames.isEmpty) {
      //冷启动
      if (!kReleaseMode){
        print('应用没启动，使用LaunchUrl的方式');
      }

      // String url = 'app://router?name=$routerName';
      // if (await canLaunch(url)) {
      //   await launch(url);
      // } else {
      //   Log.d('无法启动此scheme-host');
      // }
    } else {
      //正常跳转
      if (!kReleaseMode){
        print('应用已启动，使用默认路由方式');
      }

      _toNamedSingleTask(routerName);
    }
  }
}