import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:pull_to_refresh/pull_to_refresh.dart';
import '../../../../app_localizations.dart';
import '../../../../chatvibe_core/utilities/at_banner_utils.dart';
import '../../../../chatvibe_core/utilities/at_loading_manager.dart';
import '../../../../chatvibe_data/models/enum/at_banner_type.dart';
import '../../../../chatvibe_data/sources/repositories/config_repository_imp.dart';
import '../../../../chatvibe_domain/models/res/at_index_banner_res.dart';
import '../../../../chatvibe_ui/components/at_compontent.dart';

class HomeEventPage extends StatefulWidget {
  @override
  _HomeEventPageState createState() => _HomeEventPageState();
}

class _HomeEventPageState extends State<HomeEventPage>
    with SingleTickerProviderStateMixin {
  bool isLoading = false;
  List<ATIndexBannerRes> homeBanners = [];
  final RefreshController _refreshController = RefreshController(
    initialRefresh: false,
  );

  @override
  void initState() {
    super.initState();
    _loadData();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      resizeToAvoidBottomInset: false,
      backgroundColor: Colors.transparent,
      body: Stack(
        alignment: AlignmentDirectional.bottomCenter,
        children: [
          SmartRefresher(
            enablePullDown: true,
            enablePullUp: false,
            controller: _refreshController,
            onRefresh: () {
              _loadData();
            },
            onLoading: () {},
            child:
                homeBanners.isNotEmpty
                    ? SingleChildScrollView(
                      child: Column(
                        mainAxisSize: MainAxisSize.min,
                        children: [_banner()],
                      ),
                    )
                    : GestureDetector(
                      behavior: HitTestBehavior.opaque,
                      onTap: () {
                        _loadData();
                      },
                      child:
                          isLoading
                              ? Center(child: CupertinoActivityIndicator())
                              : mainEmpty(
                                msg: ATAppLocalizations.of(context)!.noData,
                              ),
                    ),
          ),
        ],
      ),
    );
  }

  _banner() {
    return homeBanners.isNotEmpty
        ? Container(
          margin: EdgeInsets.symmetric(horizontal: 10.w),
          child: ListView.separated(
            shrinkWrap: true,
            physics: NeverScrollableScrollPhysics(),
            itemCount: homeBanners.length,
            // 列表项数量
            padding: EdgeInsets.only(bottom: 15.w),
            itemBuilder: (context, index) {
              return GestureDetector(
                onTap: () {
                  print('ads:${homeBanners[index].toJson()}');
                  ATBannerUtils.openBanner(homeBanners[index], context);
                },
                child: netImage(
                  height: 98.w,
                  url: homeBanners[index].cover ?? "",
                  fit: BoxFit.contain,
                  borderRadius: BorderRadius.all(Radius.circular(12.w)),
                ),
              );
            },
            separatorBuilder: (BuildContext context, int index) {
              return SizedBox(height: 10.w);
            },
          ),
        )
        : Container();
  }

  _loadData() async {
    setState(() {
      isLoading = true;
    });
    ATLoadingManager.exhibitOperation();
    try {
      var banners = await ConfigRepositoryImp().getBanner();
      homeBanners.clear();
      for (var v in banners) {
        if ((v.displayPosition ?? "").contains(ATBannerType.HOME_ALERT.name)) {
          homeBanners.add(v);
        }
      }
      _refreshController.refreshCompleted();
      _refreshController.loadComplete();
      isLoading = false;
      if (mounted) setState(() {});
      ATLoadingManager.veilRoutine();
    } catch (e) {
      _refreshController.refreshCompleted();
      _refreshController.loadComplete();
      isLoading = false;
      if (mounted) setState(() {});
      ATLoadingManager.veilRoutine();
    }
  }
}