elektronika/lib/app/pages/product/screen.dart

import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:get/get.dart';
import 'package:loader_overlay/loader_overlay.dart';

import '../../../app/app.dart';
import 'widgets/product_image_header.dart';
import 'widgets/product_info.dart';
import 'widgets/product_specification_tab.dart';
import 'widgets/product_sliver_appbar.dart';

class ProductDetailsPage extends StatelessWidget {
  final ProductModel model;

  ProductDetailsPage({required this.model});

  @override
  Widget build(BuildContext context) {
    return GetX<ProductController>(
      init: ProductController(model),
      builder: (pc) => Scaffold(
        body: pc.state.isLoading.value
            ? CustomLoader()
            : SafeArea(
                top: false,
                child: LoaderOverlay(
                  useDefaultLoading: false,
                  overlayColor: Colors.transparent,
                  overlayWidget: CustomLoader(),
                  child: Scaffold(
                    appBar: CustomAppbarWidget(leading: AppBarBackBtn()),
                    body: SliverAppBarWithTabBar(model: model, pc: pc),
                    bottomNavigationBar: Padding(
                      padding: const EdgeInsets.only(left: 16.0, right: 16, bottom: 16.0, top: 8),
                      child: ColoredButton(
                        title: 'add_to_cart'.tr,
                        callback: () => pc.onAddToCart(context, model),
                        btnColor: ThemeColor.mainColor,
                      ),
                    ),
                  ),
                ),
              ),
      ),
    );
  }

  List<Widget> buildSimpleProductScreen(ProductModel model) {
    return [
      SizedBox(height: 20.h),
      ProductNameWidget(model: model),
      SizedBox(height: 20.h),
      ProductImageHeader(images: model.images, model: model),
      SizedBox(height: 20.h),
      ProductPriceWidget(model: model),
      SizedBox(height: 20.h),
      AppTheme.appColorDivider,
      Container(
        color: Colors.amber,
        height: 1.sh - 120.h * 2, // 120.h is appbar height
        child: ProductSpecificationsWidget(
          model: model,
        ),
      ),
    ];
  }

  List<Widget> buildConfigurableProductScreen(ProductController pc) {
    final selectedOption = pc.state.selectedOption.value;

    final List<SimpleOption>? simpleOptions = pc.state.simpleAttribute.value?.options;
    final selectedSimpleOption = pc.state.selectedSimpleOption.value;

    final List<ProductModel>? optionProducts = selectedOption != null ? selectedOption.variants.products : [];

    final attrText = pc.state.attribute.value != null ? pc.state.attribute.value!.attribute.name : '';

    final attrValue = pc.state.selectedOption.value != null ? pc.state.selectedOption.value!.option : '';

    final List<Option> options = pc.state.attribute.value != null ? pc.state.attribute.value!.options : [];

    final ProductModel? selectedProduct = pc.state.selectedProduct.value;

    final List<Widget> _list = [
      SizedBox(height: 20.h),
      selectedProduct != null ? ProductNameWidget(model: selectedProduct) : SizedBox.shrink(),
      SizedBox(height: 20.h),

      selectedProduct != null
          ? ProductImageHeader(
              model: selectedProduct,
              images: selectedOption != null
                  ? selectedOption.images
                  : selectedSimpleOption != null
                      ? selectedSimpleOption.images
                      : [],
            )
          : SizedBox.shrink(),
      SizedBox(height: 20.h),

      // label
      selectedOption != null
          ? Padding(
              padding: EdgeInsets.symmetric(horizontal: 16.w, vertical: 4),
              child: Row(
                children: [
                  Text(attrText + ':'),
                  SizedBox(width: 6),
                  Text(
                    attrValue,
                    style: new TextStyle(fontWeight: FontWeight.bold),
                  ),
                ],
              ),
            )
          : SizedBox.shrink(),

      // images
      selectedOption != null
          ? SingleChildScrollView(
              scrollDirection: Axis.horizontal,
              child: Row(
                children: mapIndexed(
                  options,
                  (index, Option option) => Padding(
                    padding: const EdgeInsets.only(left: 8.0),
                    child: GestureDetector(
                      onTap: () => pc.onSuperAttributeChange(option),
                      child: Container(
                        width: 80.h,
                        height: 80.h,
                        padding: const EdgeInsets.all(4),
                        decoration: new BoxDecoration(
                            // color: Colors.amberAccent,
                            border: Border.all(
                              color: option.option == selectedOption.option
                                  ? ThemeColor.mainColor
                                  : Colors.grey.withOpacity(0.50),
                              width: option.option == selectedOption.option ? 2 : 1,
                            ),
                            borderRadius: BorderRadius.circular(8)),
                        // padding: const EdgeInsets.symmetric(horizontal: 4, vertical: 4),
                        margin: const EdgeInsets.symmetric(horizontal: 4, vertical: 4),
                        child: cachedImageNetwork(
                          option.images.length > 0 ? option.images.first.originalImageUrl : '',
                          BoxFit.fill,
                          const BorderRadius.all(Radius.circular(4.0)),
                          0.22.sw,
                          0.15.sh,
                        ),
                      ),
                    ),
                  ),
                ).toList(),
              ),
            )
          : SizedBox.shrink(),

      selectedOption != null ? SizedBox(height: 20.h) : SizedBox.shrink(),

      selectedProduct != null ? ProductPriceWidget(model: selectedProduct) : SizedBox.shrink(),
      SizedBox(height: 20.h),

      AppTheme.appColorDivider,
      SizedBox(height: 10),
      selectedOption != null
          ? Padding(
              padding: EdgeInsets.symmetric(horizontal: 16.w),
              child: Text(
                selectedOption.variants.attribute!.name,
                style: new TextStyle(fontWeight: FontWeight.bold),
              ),
            )
          : SizedBox.shrink(),

      SizedBox(height: 10),

      optionProducts != null
          ? Padding(
              padding: EdgeInsets.symmetric(horizontal: 16.w),
              child: Wrap(
                children: mapIndexed(
                  optionProducts,
                  (index, ProductModel product) => GestureDetector(
                    onTap: () => pc.onInnerAttributeChange(product),
                    child: Container(
                      decoration: new BoxDecoration(
                          border: Border.all(
                            color: product.id == selectedProduct?.id
                                ? ThemeColor.mainColor
                                : Colors.grey.withOpacity(0.50),
                            width: product.id == selectedProduct?.id ? 2 : 1,
                          ),
                          borderRadius: BorderRadius.circular(8)),
                      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                      margin: EdgeInsets.only(right: 8),
                      child: Text(product.optionValue ?? ''),
                    ),
                  ),
                ).toList(),
              ),
            )
          : SizedBox.shrink(),

      // simple option label
      pc.state.simpleAttribute.value != null
          ? Padding(
              padding: EdgeInsets.symmetric(horizontal: 16.w),
              child: Text(
                pc.state.simpleAttribute.value?.attribute.name ?? '',
                style: new TextStyle(
                  fontWeight: FontWeight.bold,
                ),
              ))
          : SizedBox.shrink(),

      SizedBox(height: 10),

      simpleOptions != null
          ? Padding(
              padding: EdgeInsets.symmetric(horizontal: 16.w),
              child: Wrap(
                children: mapIndexed(
                  simpleOptions,
                  (index, SimpleOption option) => GestureDetector(
                    onTap: () => pc.onSimpleAttributeChange(option),
                    child: Container(
                      decoration: new BoxDecoration(
                          border: Border.all(
                            color: option.option == selectedSimpleOption?.option
                                ? ThemeColor.mainColor
                                : Colors.grey.withOpacity(0.50),
                            width: option.option == selectedSimpleOption?.option ? 2 : 1,
                          ),
                          borderRadius: BorderRadius.circular(8)),
                      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
                      margin: EdgeInsets.only(right: 8),
                      child: Text(option.product.optionValue ?? ''),
                    ),
                  ),
                ).toList(),
              ),
            )
          : SizedBox.shrink(),

      SizedBox(height: 10),
      AppTheme.appColorDivider,

      selectedProduct != null
          ? Container(
              color: Colors.amber,
              height: 1.sh - 120.h * 2, // 120.h is appbar height
              child: ProductSpecificationsWidget(
                model: model,
              ),
            )
          : SizedBox.shrink(),
    ];

    return _list;
  }
}