ambito/lib/src/pages/cart/cart_page.dart

import 'dart:typed_data';

import 'package:ambito/src/entity/cart/cart_datasource.dart';
import 'package:ambito/src/entity/cart/cart_element.dart';
import 'package:ambito/src/entity/cart/cart_repository.dart';
import 'package:ambito/src/entity/measure/complete/measure_complete.dart';
import 'package:ambito/src/entity/measure/general/measure_general.dart';
import 'package:ambito/src/packages/ambito_theme/ambito_theme.dart';
import 'package:flutter/material.dart';
import 'package:flutter_to_pdf/export_delegate.dart';
import 'package:flutter_to_pdf/export_frame.dart';
import 'package:screen_breakpoints/screen_breakpoints.dart';
import 'package:screenshot/screenshot.dart';
import 'package:syncfusion_flutter_core/theme.dart';
import 'package:syncfusion_flutter_datagrid/datagrid.dart';

import '../../entity/cart/cart.dart';
import '../../entity/measure/general/measure_general_repository.dart';
import '../../widgets/buttons/print_all_button.dart';
import '../../widgets/buttons/print_button.dart';
import '../../widgets/page/base_page.dart';

class CartPage extends StatefulWidget {
  const CartPage({super.key, required this.measure});

  final MeasureComplete? measure;

  @override
  State<StatefulWidget> createState() => CartPageState();
}

class CartPageState extends State<CartPage> {
  List<Cart>? carts;
  Widget cartCards = const SizedBox();
  final ExportDelegate exportDelegate = ExportDelegate(
    ttfFonts: {
      'OpenSans': 'fonts/OpenSans-Regular.ttf',
      'OpenSans_regular': 'fonts/OpenSans-Regular.ttf',
      'OpenSans_500': 'fonts/OpenSans-Bold.ttf',
    },
  );

  final ScreenshotController screenshotController = ScreenshotController();
  Uint8List? _imageFile;

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

  @override
  Widget build(BuildContext context) {
    final AmbitoTheme theme = getTheme(context);

    carts = CartRepository().getMyCarts();
    return BasePage().getPage(
      context,
      BreakpointBuilder(
        builder: (
          context,
          breakpoint,
          configuration,
        ) {
          return SingleChildScrollView(
            child: Center(
              child: Screenshot(
                controller: screenshotController,
                child: SizedBox(
                  width: Breakpoint.fromContext(context).width,
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.start,
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      theme.verticalSpacer,
                      Text(
                        'Warenkorb',
                        style: theme.headlineLarge,
                        textAlign: TextAlign.start,
                      ),
                      theme.verticalSpacerSmall,
                      Row(
                        mainAxisSize: MainAxisSize.max,
                        mainAxisAlignment: MainAxisAlignment.end,
                        children: [
                          const Spacer(),
                          PrintAllButton(
                            onPressed: () async {
                              screenshotController.capture();
                            },
                          ),
                        ],
                      ),
                      theme.verticalSpacerSmall,
                      buildCards(theme, carts),
                    ],
                  ),
                ),
              ),
            ),
          );
        },
      ),
    );
  }

  Future<void> saveFile(document, String name) async {}

  Widget buildCards(AmbitoTheme theme, List<Cart>? carts) {
    List<Widget> children = [];

    if (carts != null) {
      int counter = 0;
      for (final cart in carts) {
        final measure = MeasureGeneralRepository().getByName(cart.name!);

        final elements = CartRepository().getElementsByCartId(cart.id);

        double sum = 0;

        for (final element in elements) {
          sum = sum +
              ((int.tryParse(element.amount ?? '1') ?? 1) *
                  (double.tryParse(element.price ?? '0') ?? 0));
        }

        final card = ExportFrame(
          exportDelegate: exportDelegate,
          frameId: 'cart${cart.id}',
          child: SizedBox(
            width: 1152,
            child: Card(
              elevation: 0,
              color: theme.currentColorScheme.tertiary,
              child: Padding(
                padding: const EdgeInsets.all(20),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    Row(
                      children: [
                        Text(
                          cart.name!,
                          style: theme.labelLarge.copyWith(
                              color: theme.currentColorScheme.primary),
                        ),
                        const Spacer(),
                        SizedBox(
                          height: 40,
                          width: 200,
                          child: ClipRRect(
                            borderRadius: const BorderRadius.all(
                              Radius.circular(10),
                            ),
                            child: measure?.getFullImage() ??
                                Image.asset('assets/images/logo_trans.png'),
                          ),
                        ),
                      ],
                    ),
                    theme.verticalSpacerSmall,
                    gridWidget(elements ?? []),
                    theme.verticalSpacer,
                    Row(
                      children: [
                        Text(
                          'Richtpreis ca. ${sum.toStringAsFixed(2)}€',
                          style: theme.labelMedium
                              .copyWith(fontWeight: FontWeight.bold),
                        ),
                        Spacer(),
                        PrintButton(
                          onPressed: () async {
                            final pdf = await exportDelegate
                                .exportToPdfDocument('cart${cart.id}');
                            await saveFile(pdf, '${cart.id}.pdf');
                          },
                        ),
                      ],
                    )
                  ],
                ),
              ),
            ),
          ),
        );
        children.add(card);
        children.add(theme.verticalSpacerMax);
        counter++;
      }
    }

    return ExportFrame(
      frameId: 'completeCart',
      exportDelegate: exportDelegate,
      child: Column(
        children: children,
      ),
    );
  }

  Widget gridWidget(List<CartElement> cartElements) {
    final AmbitoTheme theme = getTheme(context);

    return SfDataGridTheme(
      data: SfDataGridThemeData(
        headerColor: theme.currentColorScheme.primaryContainer,
        sortIcon: Icon(
          Icons.keyboard_arrow_down,
          color: theme.currentColorScheme.primary,
        ),
      ),
      child: SfDataGrid(
        allowSorting: true,
        source: CartDataSource(cartElements: cartElements, context: context),
        columnWidthMode: ColumnWidthMode.fill,
        columns: [
          GridColumn(
            columnName: 'name',
            label: Container(
              padding: const EdgeInsets.symmetric(horizontal: 10.0),
              alignment: Alignment.centerLeft,
              child: Text(
                'Material',
                overflow: TextOverflow.ellipsis,
                style: theme.bodyMedium.copyWith(
                  color: theme.currentColorScheme.primary,
                ),
              ),
            ),
          ),
          GridColumn(
            columnName: 'amount',
            maximumWidth: 150,
            label: Container(
              padding: const EdgeInsets.symmetric(horizontal: 10.0),
              alignment: Alignment.centerLeft,
              child: Text(
                'Menge',
                overflow: TextOverflow.ellipsis,
                style: theme.bodyMedium.copyWith(
                  color: theme.currentColorScheme.primary,
                ),
              ),
            ),
          ),
          GridColumn(
            columnName: 'provider',
            maximumWidth: 200,
            allowSorting: false,
            label: Container(
              padding: const EdgeInsets.symmetric(horizontal: 10.0),
              alignment: Alignment.centerLeft,
              child: Text(
                'Anbieter',
                overflow: TextOverflow.ellipsis,
                style: theme.bodyMedium.copyWith(
                  color: theme.currentColorScheme.primary,
                ),
              ),
            ),
          ),
          GridColumn(
            columnName: 'price',
            allowSorting: true,
            maximumWidth: 250,
            label: Container(
              padding: const EdgeInsets.symmetric(horizontal: 10.0),
              alignment: Alignment.centerLeft,
              child: Text(
                'Richtpreis',
                overflow: TextOverflow.ellipsis,
                style: theme.bodyMedium.copyWith(
                  color: theme.currentColorScheme.primary,
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }
}