cloudsolutions-atoms/lib/views/widgets/fullscreen_dialogs/multiple_selection_fullscreen_dialog.dart

import 'package:flutter/material.dart';
import 'package:test_sa/extensions/context_extension.dart';
import 'package:test_sa/extensions/int_extensions.dart';
import 'package:test_sa/extensions/text_extensions.dart';
import 'package:test_sa/extensions/widget_extensions.dart';
import 'package:test_sa/models/base.dart';
import 'package:test_sa/modules/cm_module/views/components/action_button/footer_action_button.dart';
import 'package:test_sa/new_views/app_style/app_color.dart';
import 'package:test_sa/new_views/common_widgets/app_filled_button.dart';

typedef SelectionBuilderString = String Function(dynamic);

class MultipleSelectionFullScreenDialog<T extends Base> extends StatefulWidget {
  final List<T>? items;
  final List<T> selectedItem; // Now nullable
  final T? disableItem; // Now nullable
  final String title;
  final bool showCancel;
  final SelectionBuilderString builderString;
  final Function(List<T>) onSelect;

  const MultipleSelectionFullScreenDialog(
      {Key? key, this.items, this.selectedItem = const [], this.disableItem, this.title = "", required this.builderString, this.showCancel = false, required this.onSelect})
      : super(key: key);

  @override
  _SelectionBottomSheetState createState() => _SelectionBottomSheetState<T>();
}

class _SelectionBottomSheetState<T extends Base> extends State<MultipleSelectionFullScreenDialog<T>> {
  late List<T> _selectedValue; // Now nullable

  String query = "";

  List<T>? get filteredList => widget.items?.where((element) => widget.builderString(element).toLowerCase().contains(query.toLowerCase())).toList();

  @override
  void initState() {
    _selectedValue = widget.selectedItem;
    super.initState();
  }

  FocusNode searchFocusNode = FocusNode();

  @override
  void dispose() {
    searchFocusNode.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: widget.title.heading5(context),
        actions: [
          if (widget.showCancel)
            AnimatedContainer(
              height: 24,
              duration: const Duration(milliseconds: 250),
              margin: const EdgeInsets.only(right: 16),
              decoration: BoxDecoration(color: _selectedValue.isNotEmpty ? const Color(0xffF63939).withOpacity(.75) : Colors.grey.withOpacity(.75), borderRadius: BorderRadius.circular(30)),
              padding: const EdgeInsets.only(left: 4, right: 8, top: 4, bottom: 4),
              alignment: Alignment.center,
              child: Row(
                mainAxisSize: MainAxisSize.min,
                crossAxisAlignment: CrossAxisAlignment.center,
                children: [
                  const Icon(Icons.clear, color: Colors.white, size: 16),
                  4.width,
                  const Text(
                    "Clear",
                    style: TextStyle(fontSize: 14, color: Colors.white, height: 1),
                  )
                ],
              ).onPress(_selectedValue.isNotEmpty
                  ? () {
                      Navigator.pop(context);
                      widget.onSelect([]);
                    }
                  : null),
            ),
        ],
      ),
      body: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          SearchBar(
            focusNode: searchFocusNode,
            elevation: WidgetStateProperty.all<double>(0),
            backgroundColor: WidgetStateProperty.all<Color?>(context.isDark ? AppColor.neutral120 : null),
            leading: Icon(Icons.search, color: AppColor.iconColor(context)),
            textStyle: WidgetStateProperty.all<TextStyle>(
              TextStyle(color: AppColor.textColor(context), fontSize: 16.0),
            ),
            hintStyle: WidgetStateProperty.all<TextStyle>(
              TextStyle(color: AppColor.textColor(context), fontSize: 14.0),
            ),
            hintText: 'Search by name',
            onChanged: (queryString) {
              query = queryString;
              setState(() {});
            },
          ).paddingOnly(top: 16, start: 16, end: 16, bottom: 8),
          // TextField(
          //   onChanged: (queryString) {
          //     query = queryString;
          //     setState(() {});
          //   },
          //   style: const TextStyle(fontSize: 14),
          //   focusNode: searchFocusNode,
          //   decoration: InputDecoration(
          //     hintText: 'Search by name',
          //     labelText: 'Search',
          //     hintStyle: const TextStyle(fontSize: 14),
          //     focusedBorder: OutlineInputBorder(
          //       borderSide: BorderSide(color: AppColor.blueStatus(context), width: 2.0),
          //       borderRadius: const BorderRadius.all(Radius.circular(12.0)),
          //     ),
          //     enabledBorder: OutlineInputBorder(
          //       borderSide: BorderSide(color: AppColor.blueStatus(context), width: 1.0),
          //       borderRadius: const BorderRadius.all(Radius.circular(12.0)),
          //     ),
          //     contentPadding: const EdgeInsets.symmetric(vertical: 8.0, horizontal: 16.0),
          //   ),
          // ),
          8.height,
          Expanded(
            child: ListView.builder(
                itemCount: filteredList?.length,
                padding: EdgeInsets.zero,
                itemBuilder: (cxt, index) {
                  bool isDisabledItem = widget.disableItem != null && widget.disableItem?.identifier == filteredList![index].identifier;
                  return Theme(
                    data: Theme.of(context).copyWith(
                      radioTheme: RadioThemeData(
                        fillColor: MaterialStateColor.resolveWith((states) {
                          if (states.contains(MaterialState.selected)) {
                            return AppColor.iconColor(context); // Active color
                          }
                          return Colors.grey; // Inactive color
                        }),
                      ),
                    ),
                    child: CheckboxListTile(
                      value: checkItContains(filteredList![index]),
                      dense: true,
                      controlAffinity: ListTileControlAffinity.leading,
                      activeColor: AppColor.textColor(context),
                      contentPadding: const EdgeInsets.only(left: 16, right: 16),
                      onChanged: (value) {
                        // if (checkItContains(filteredList![index]) ?? false) {
                        //   _selectedValue.remove(filteredList![index]);
                        // } else {
                        //   _selectedValue.add(filteredList![index]);
                        // }
                        if (value == true) {
                          _selectedValue.add(filteredList![index]);
                        } else if (value == false) {
                          _selectedValue.remove(filteredList![index]);
                        }
                        searchFocusNode.unfocus();
                        setState(() {});
                      },
                      title: Text(
                        widget.builderString(filteredList![index]).cleanupWhitespace.capitalizeFirstOfEach ?? "",
                        style: Theme.of(context).textTheme.bodyLarge,
                      ),
                    ),
                  );
                }),
          ),
          8.height,
          if (_selectedValue.isNotEmpty)
            FooterActionButton.footerContainer(
                context: context,
                child: AppFilledButton(
                  label: context.translation.select,
                  maxWidth: true,
                  onPressed: () {
                    Navigator.pop(context);
                    widget.onSelect(_selectedValue);
                  },
                )),
        ],
      ),
    );
  }

  bool? checkItContains(T) {
    return _selectedValue.contains(T);
  }
}