pending_collections_view.dart

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import 'package:easy_localization/easy_localization.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
 
import '../../../../../../core/ui/widgets/loading.dart';
import '../../../../../../core/ui/widgets/stats_card.dart';
import '../../../../../../core/ui/theme/color_palette.dart';
import '../../../../../../core/ui/widgets/empty_content.dart';
import '../../../../../../core/common/entities/collection_entity.dart';
import '../../../bloc/pending_collections/pending_collections_bloc.dart';
import '../../../../../../core/ui/widgets/collection_item/collection_item.dart';
import '../../../../../auth/presentation/bloc/authentication_bloc/authentication_bloc.dart';
 
class PendingCollectionsView extends StatefulWidget {
  const PendingCollectionsView({super.key});
 
  @override
  State<PendingCollectionsView> createState() => _PendingCollectionsViewState();
}
 
class _PendingCollectionsViewState extends State<PendingCollectionsView> {
  @override
  void initState() {
    super.initState();
    _loadPendingCollections();
  }
 
  void _loadPendingCollections() {
    final authState = context.read<AuthenticationBloc>().state;
    if (authState is AuthenticatedState) {
      context.read<PendingCollectionsBloc>().add(
        LoadPendingCollectionsEvent(
          userId: authState.session.uid ?? 0,
        ),
      );
    }
  }
 
  @override
  Widget build(BuildContext context) {
    return BlocBuilder<PendingCollectionsBloc, PendingCollectionsState>(
      buildWhen: (previous, current) => current is PendingCollectionsLoading || current is PendingCollectionsLoaded || current is PendingCollectionsError,
      builder: (context, state) {
        if (state is PendingCollectionsLoaded) {
          if (state.collections.isEmpty) {
            return EmptyContent(text: "common.no_pending_collections".tr());
          }
          return ListView.builder(
            physics: const AlwaysScrollableScrollPhysics(),
            itemCount: state.collections.length + 1,
            itemBuilder: (context, index) {
              if (index == 0) {
                return Padding(
                  padding: EdgeInsets.all(15.sp),
                  child: StatsCard(
                    title: "Pending Collections",
                    number: state.collections.length.toString(),
                    subtitle: _getCollectionQuantity(state.collections),
                    gradient: const LinearGradient(
                      begin: Alignment.topLeft,
                      end: Alignment.bottomRight,
                      colors: [ColorPalette.grey, ColorPalette.darkGrey],
                    ),
                  ),
                );
              }
              return CollectionItem(
                isPending: true,
                number: '',
                collection: state.collections[index - 1],
                showNumber: false,
              );
            },
          );
        }
        return const Loading();
      },
    );
  }
 
  String _getCollectionQuantity(List<CollectionEntity> collections) {
    String quanitity = collections.fold<double>(
      0, (prev, element) => prev + (element.volume ?? 0)
    ).toInt().toString();
    return '$quanitity L';
  }
}