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:news_app/constant/size_res.dart';
import 'package:news_app/extension/base.dart';
import 'package:news_app/widget/my_txt.dart';

import '../../model/news_data_model.dart';
import '../../provider/user_favorite_provider.dart';
import '../../provider/user_read_history_provider.dart';
import '../../widget/empty_1_widget.dart';
import '../news/news_child_main_page.dart';

/// @author: bo.zeng
/// @email: cnhbwds@gmail.com
/// @date: 2025 2025/4/9 16:00
/// @description:
class UserReadHistoryPage extends ConsumerStatefulWidget {
  const UserReadHistoryPage({super.key});

  @override
  ConsumerState<UserReadHistoryPage> createState() =>
      _UserReadHistoryPageState();
}

final userReadHistoryProvider =
    NotifierProvider<UserReadHistoryProvider, UserNews>(() {
      return UserReadHistoryProvider();
    });

class _UserReadHistoryPageState extends ConsumerState<UserReadHistoryPage> {
  int pageNum = 0;
  int totalNews = 0;

  @override
  void initState() {
    super.initState();
    ref.read(userReadHistoryProvider.notifier).fetchUserReadHistory(pageNum);
  }

  @override
  Widget build(BuildContext context) {
    final news = ref.watch(userReadHistoryProvider);
    ref.listen(userReadHistoryProvider, (pre, next) {
      totalNews = next.rows?.length ?? 0;
    });
    return Scaffold(
      appBar: AppBar(
        // 移除阴影
        scrolledUnderElevation: 0,
        // 禁用滚动时的阴影变化
        backgroundColor: Colors.white,
        title: myTxt(
          text: "阅读历史",
          fontSize: 18.sp,
          fontWeight: FontWeight.bold,
        ),
        centerTitle: true,
      ),
      body:
          news.rows?.isEmpty == true
              ? Empty1widget()
              : EasyRefresh.builder(
                onRefresh: () async {
                  pageNum = 0;
                  await ref
                      .read(userReadHistoryProvider.notifier)
                      .fetchUserReadHistory(pageNum);
                  return IndicatorResult.success;
                },
                onLoad: () async {
                  if (totalNews >= news.total.safeValue) {
                    return IndicatorResult.noMore;
                  } else {
                    pageNum++;
                    await ref
                        .read(userReadHistoryProvider.notifier)
                        .fetchUserReadHistory(pageNum);
                    return IndicatorResult.success;
                  }
                },
                childBuilder: (context, py) {
                  return ListView.separated(
                    physics: py,
                    padding: EdgeInsets.symmetric(
                      horizontal: horizontalPadding,
                    ),
                    itemBuilder: (BuildContext context, int index) {
                      return buildNewsNewItem(
                        news.rows?[index] ?? NewsRecord(),
                        context,
                      );
                    },
                    separatorBuilder: (BuildContext context, int index) {
                      return SizedBox(height: 5.h,);
                    },
                    itemCount: news.rows?.length ?? 0,
                  );
                },
              ),
    );
  }
}