unloading_history_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/theme/color_palette.dart';
import '../../../../../core/ui/widgets/custom_scaffold.dart';
import '../../../../../core/ui/widgets/empty_content.dart';
import '../../../../../core/ui/widgets/error_widget.dart';
import '../../../../../core/ui/widgets/loading.dart';
import '../../../../../core/ui/widgets/stats_card.dart';
import '../../../../auth/presentation/bloc/authentication_bloc/authentication_bloc.dart';
import '../../bloc/unloading_bloc.dart';
import '../../bloc/unloading_event.dart';
import '../../bloc/unloading_state.dart';
import '../widgets/unloading_history_collection_item.dart';
 
class UnloadingHistoryView extends StatefulWidget {
  const UnloadingHistoryView({super.key});
 
  @override
  State<UnloadingHistoryView> createState() => _UnloadingHistoryViewState();
}
 
class _UnloadingHistoryViewState extends State<UnloadingHistoryView> {
  @override
  void initState() {
    super.initState();
    _loadUnloadingHistory();
  }
 
  void _loadUnloadingHistory() {
    final authState = context.read<AuthenticationBloc>().state;
    if (authState is AuthenticatedState) {
      context.read<UnloadingBloc>().add(
        GetHistoryUnloadingEvent(userId: authState.session.uid ?? 0),
      );
    }
  }
 
  double _calculateTotalVolume(List<dynamic> history) {
    double total = 0;
    for (var item in history) {
      total += item.quantityUnloaded ?? 0;
    }
    return total;
  }
 
  @override
  Widget build(BuildContext context) {
    return CustomScaffold(
      backgroundColor: ColorPalette.antiFlashWhite,
      body: BlocBuilder<UnloadingBloc, UnloadingState>(
        builder: (context, state) {
          if (state is UnloadingLoading) {
            return Loading();
          } else if (state is UnloadingError) {
            return CustomErrorWidget(
              message: "unloading.connection_failed".tr(),
              onReload: _loadUnloadingHistory,
            );
          } else if (state is HistoryUnloadingLoaded) {
            final history = state.history..sort(
              (a, b) => (b.deliveredOn?? DateTime.now()).compareTo(a.deliveredOn?? DateTime.now()),
            );
 
            return SingleChildScrollView(
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  SizedBox(height: 16.sp),
                  Padding(
                    padding: EdgeInsets.symmetric(horizontal: 15.sp),
                    child: StatsCard(
                      unit: "unloading.deliveries".tr(),
                      gradient: LinearGradient(
                        colors: [
                          ColorPalette.blue.withValues(alpha: 0.9),
                          ColorPalette.tiffanyBlue.withValues(alpha: 0.9),
                        ],
                      ),
                      title: 'unloading.completed_deliveries'.tr(),
                      number: history.length.toString(),
                      subtitle: formatVolume(_calculateTotalVolume(history)),
                    ),
                  ),
                  SizedBox(height: 16.sp),
                  if (history.isEmpty)
                    // Replace empty content text
                    Center(
                      child: Padding(
                        padding: EdgeInsets.only(top: 90.sp),
                        child: EmptyContent(text: 'unloading.no_history_available'.tr()),
                      ),
                    )
                  else
                    ...List.generate(
                      history.length,
                      (index) => UnloadingHistoryCollectionItem(
                        id: history[index].id ?? 0,
                        status: history[index].status ?? 'Unknown',
                        deliveryDate: history[index].deliveredOn?.toString() ?? '',
                        quantityUnloaded: history[index].quantityUnloaded?.toString() ?? '--',
                        quantityWeighted: history[index].quantityWeight?.toString() ?? '--',
                        reference: history[index].reference ?? '',
                        warehouseRepresentative: history[index].warehouseResponsible ?? '--',
                        number: (index + 1).toString(),
                      ),
                    ),
                  SizedBox(height: 16.sp),
                ],
              ),
            );
          } else {
            return EmptyContent(text: 'No data available');
          }
        },
      ),
    );
  }
 
  String formatVolume(dynamic volume) {
    if (volume == null) return "--";
    double volumeValue =
        volume is double ? volume : double.tryParse(volume.toString()) ?? 0.0;
    if (volumeValue > 999) {
      return '${(volumeValue / 1000).toStringAsFixed(2)} MT';
    } else {
      return '$volumeValue KG';
    }
  }
}