location2025/lib/module/friend/friend_controller.dart

import 'dart:async';

import 'package:flutter/cupertino.dart';
import 'package:get/get.dart';
import 'package:get/get_core/src/get_main.dart';
import 'package:injectable/injectable.dart';
import 'package:location/base/base_controller.dart';
import 'package:location/data/repositories/account_repository.dart';
import 'package:location/data/repositories/friends_repository.dart';

import '../../data/bean/user_info.dart';

@injectable
class FriendController extends BaseController {
  final AccountRepository accountRepository;
  final FriendsRepository friendsRepository;

  UserInfo get mineUserInfo => accountRepository.mineUserInfo.value;

  UserInfo? get virtualFriendInfo => friendsRepository.virtualFriendInfo.value;

  RxList<UserInfo> get friendsList => friendsRepository.friendsList;

  final ScrollController scrollController = ScrollController();

  final RxDouble _opacity = 0.0.obs;

  double get opacity => _opacity.value;

  final double _scrollThreshold = 80;

  FriendController(this.accountRepository, this.friendsRepository);

  @override
  void onReady() {
    super.onReady();
    scrollController.addListener(_handleScroll);
  }

  void _handleScroll() {
    final double offset = scrollController.offset;
    if (offset <= _scrollThreshold) {
      _opacity.value = 0.0;
    } else {
      double opacity = ((offset - _scrollThreshold) / 200).clamp(0.0, 1.0);
      _opacity.value = opacity;
    }
  }

  void back() {
    Get.back();
  }

  void newsClick() {}

  @override
  void onClose() {
    super.onClose();
    scrollController.dispose();
  }
}