import 'package:easy_refresh/easy_refresh.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:go_router/go_router.dart';
import 'package:news_app/constant/api_const.dart';
import 'package:news_app/constant/color_res.dart';
import 'package:news_app/constant/size_res.dart';
import 'package:news_app/model/special_model.dart';
import 'package:news_app/provider/special_list_provider.dart';
import 'package:news_app/util/theme_util.dart';
import 'package:news_app/widget/empty_1_widget.dart';
import 'package:news_app/widget/load_image.dart';

import '../../model/special_detail.dart';
import '../../provider/special_detail_provider.dart';
import '../../widget/my_txt.dart';

/// @author: bo.zeng
/// @email: cnhbwds@gmail.com
/// @date: 2025 2025/4/29 22:16
/// @description:

class SpecialListPage extends ConsumerStatefulWidget {
  static final String routeName = '/special/List';
  final String cid;

  const SpecialListPage({super.key, required this.cid});

  @override
  ConsumerState<SpecialListPage> createState() => _SpecialListPageState();
}

final specialListProvider = NotifierProvider<SpecialListProvider, SpecialModel>(
  () {
    return SpecialListProvider();
  },
);

final specialDetailProvider =
    NotifierProvider<SpecialDetailProvider, SpecialDetail>(() {
      return SpecialDetailProvider();
    });

class _SpecialListPageState extends ConsumerState<SpecialListPage> {
  int pageNum = 0;
  int currentTotal = 0;

  @override
  void initState() {
    super.initState();
    setImmersiveStatusBar();
    Future.wait([
      ref
          .read(specialDetailProvider.notifier)
          .fetchSpecialDetail(cid: widget.cid),
      ref
          .read(specialListProvider.notifier)
          .fetchSpecialList(cid: widget.cid, pageNum: pageNum),
    ]);
  }

  void refresh() async {}

  Widget _buildHeader(BuildContext context, SpecialDetail data) {
    return SizedBox(
      width: double.infinity,
      height: 190.h, // 你自己项目里的适配高度
      child: Stack(
        fit: StackFit.expand, // 横向完全撑满
        children: [
          LoadImage(data.logo ?? testImageUrlGirl, fit: BoxFit.cover),
          Padding(
            padding: EdgeInsets.symmetric(horizontal: 20.w, vertical: 40.h),
            child: Column(
              crossAxisAlignment: CrossAxisAlignment.start,
              children: [
                SizedBox(height: 14.h),
                Row(
                  children: [
                    GestureDetector(
                      onTap: () => context.pop(),
                      child: Icon(Icons.arrow_back_ios, color: Colors.white),
                    ),
                  ],
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }

  @override
  Widget build(BuildContext context) {
    final specialDetailData = ref.watch(specialDetailProvider);
    final specialListData = ref.watch(specialListProvider);
    ref.listen(specialListProvider, (pre, next) {
      currentTotal = next.total ?? 0;
    });
    return Material(
      color: colorF5F7FD,
      child: EasyRefresh.builder(
        onRefresh: () async {
          pageNum = 0;
          await Future.wait([
            ref
                .read(specialDetailProvider.notifier)
                .fetchSpecialDetail(cid: widget.cid),
            ref
                .read(specialListProvider.notifier)
                .fetchSpecialList(cid: widget.cid, pageNum: pageNum),
          ]);
          return IndicatorResult.success;
        },
        onLoad: () async {
          if (currentTotal == specialListData.total) {
            return IndicatorResult.noMore;
          } else {
            pageNum++;
            await ref
                .read(specialListProvider.notifier)
                .fetchSpecialList(cid: widget.cid, pageNum: pageNum);
            return IndicatorResult.success;
          }
        },
        childBuilder: (ctx, py) {
          return CustomScrollView(
            physics: py,
            slivers: [
              SliverToBoxAdapter(
                child: _buildHeader(context, specialDetailData),
              ),
              SliverToBoxAdapter(
                child: Container(
                  color: Colors.white,
                  padding: EdgeInsets.all(horizontalPadding),
                  child: myTxt(
                    text: specialDetailData.name ?? "",
                    fontSize: 15.sp,
                    color: color333333,
                    maxLines: 1,
                  ),
                ),
              ),
              SliverPadding(
                padding: EdgeInsets.all(horizontalPadding),
                sliver:
                    specialListData.records?.isEmpty == true
                        ? SliverToBoxAdapter(child: Empty1widget())
                        : SliverList.separated(
                          itemCount: specialListData.records?.length ?? 0,
                          itemBuilder: (context, index) {
                            final item = specialListData.records?[index];
                            return GestureDetector(
                              onTap: () {
                                context.push(
                                  "/news/detail",
                                  extra: item?.contentId,
                                );
                              },
                              child: Container(
                                padding: EdgeInsets.all(10.w),
                                decoration: BoxDecoration(
                                  color: Colors.white,
                                  borderRadius: BorderRadius.circular(4.r),
                                ),
                                child: Row(
                                  children: [
                                    Expanded(
                                      flex: 3,
                                      child: LoadImage(
                                        width: 93.w,
                                        height: 70.h,
                                        item?.imagesSrc?[0] ?? "",
                                        fit: BoxFit.cover,
                                      ),
                                    ),
                                    SizedBox(width: 8.w),
                                    Expanded(
                                      flex: 7,
                                      child: SizedBox(
                                        height: 72.h,
                                        child: Column(
                                          crossAxisAlignment:
                                              CrossAxisAlignment.start,
                                          mainAxisAlignment:
                                              MainAxisAlignment.spaceBetween,
                                          children: [
                                            myTxt(
                                              text: item?.title ?? "",
                                              fontSize: 15.sp,
                                              color: color333333,
                                              maxLines: 2,
                                            ),
                                            Row(
                                              spacing: 12.w,
                                              children: [
                                                myTxt(
                                                  text: item?.author ?? "",
                                                  fontSize: 12.sp,
                                                  color: colorA7A6A6,
                                                ),
                                                myTxt(
                                                  text: item?.publishDate ?? "",
                                                  fontSize: 12.sp,
                                                  color: colorA7A6A6,
                                                ),
                                              ],
                                            ),
                                          ],
                                        ),
                                      ),
                                    ),
                                  ],
                                ),
                              ),
                            );
                          },
                          separatorBuilder: (context, index) {
                            return SizedBox(height: 10.h);
                          },
                        ),
              ),
            ],
          );
        },
      ),
    );
  }
}