hmg-mohemm-flutter-app/lib/ui/landing/itg/survey_screen.dart

import 'package:easy_localization/easy_localization.dart';
import 'package:flutter/material.dart';
import 'package:flutter_rating_bar/flutter_rating_bar.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:mohem_flutter_app/api/dashboard_api_client.dart';
import 'package:mohem_flutter_app/classes/colors.dart';
import 'package:mohem_flutter_app/classes/utils.dart';
import 'package:mohem_flutter_app/extensions/int_extensions.dart';
import 'package:mohem_flutter_app/extensions/string_extensions.dart';
import 'package:mohem_flutter_app/extensions/widget_extensions.dart';
import 'package:mohem_flutter_app/generated/locale_keys.g.dart';
import 'package:mohem_flutter_app/models/itg/itg_main_response.dart';
import 'package:mohem_flutter_app/models/itg/itg_response_model.dart';
import 'package:mohem_flutter_app/models/itg/survey_model.dart';
import 'package:mohem_flutter_app/widgets/button/default_button.dart';

class SurveyScreen extends StatefulWidget {
  const SurveyScreen({Key? key}) : super(key: key);

  @override
  _SurveyScreenState createState() => _SurveyScreenState();
}

class _SurveyScreenState extends State<SurveyScreen> {
  String reviewText = "";
  double starRating = 1;
  int _selectedIndex = 0;

  ItgResponseData? itgResponseData;

  List<String> answeredQuestions = [];

  @override
  void initState() {
    WidgetsBinding.instance.addPostFrameCallback(
      (_) => initAnswersList(),
    );
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    itgResponseData ??= ModalRoute.of(context)!.settings.arguments as ItgResponseData;
    return Scaffold(
        backgroundColor: MyColors.backgroundColor,
        body: Column(
          children: [
            Expanded(
                child: ListView(
              children: [
                Padding(
                  padding: const EdgeInsets.all(16.0),
                  child: Column(
                    children: [
                      32.height,
                      itgResponseData?.survey?.title?.toText24() ?? const Text(""),
                      8.height,
                      itgResponseData?.survey?.description?.toText16() ?? const Text(""),
                      ListView.builder(
                        padding: EdgeInsets.zero,
                        shrinkWrap: true,
                        physics: const NeverScrollableScrollPhysics(),
                        itemCount: itgResponseData?.survey?.questions?.length,
                        itemBuilder: (cxt, index) {
                          return answeredQuestions.isNotEmpty ? getSurveyWidget(itgResponseData?.survey?.questions![index], index) : Container();
                        },
                      ),
                    ],
                  ).paddingOnly(left: 21, right: 21),
                ),
              ],
            )),
            DefaultButton(
              LocaleKeys.submitSurvey.tr(),
              () {
                performAPI();
              },
            ).insideContainer,
          ],
        ));
  }

  Widget optionUI(String icon, int? index, int answerIndex) {
    return (_selectedIndex == index
            ? SvgPicture.asset(
                'assets/images/' + icon,
                height: 32,
                width: 32,
              ).objectContainerBorderView(disablePadding: true, borderColor: MyColors.textMixColor, disableWidth: true, isAlignment: true)
            : SvgPicture.asset(
                'assets/images/' + icon,
                height: 32,
                width: 32,
              ).objectContainerView(
                disablePadding: true,
              ))
        .onPress(() {
      _selectedIndex = index!;
      answeredQuestions[answerIndex] = _selectedIndex.toString();
      setState(() {});
    });
  }

  void initAnswersList() {
    answeredQuestions.clear();
    itgResponseData?.survey?.questions?.forEach((element) {
      if (element.type != "Stars") {
        if(element.type == "Faces") {
          _selectedIndex = element.options![0].optionId!;
        }
        answeredQuestions.add(element.options![0].optionId.toString());
      } else {
        answeredQuestions.add("4");
      }
    });
    setState(() {});
  }

  Widget getSurveyWidget(Questions? question, int parentIndex) {
    if (question?.type == "Expressions") {
      // Expressions = radio buttons
      return Column(
        children: [
          24.height,
          question?.title?.toText18() ?? const Text(""),
          16.height,
          GridView.builder(
            padding: EdgeInsets.zero,
            itemCount: question?.options?.length,
            shrinkWrap: true,
            physics: const NeverScrollableScrollPhysics(),
            itemBuilder: (context, index) {
              return radioOption(question?.options?[index].title ?? "", question?.options?[index].optionId.toString() ?? "", answeredQuestions[parentIndex], parentIndex);
            },
            gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
              crossAxisCount: 2,
              childAspectRatio: (4.0),
            ),
          ).paddingOnly(left: 22, right: 22, top: 12, bottom: 12).objectContainerView(disablePadding: true),
        ],
      );
    } else if (question?.type == "Stars") {
      // Stars = star rating
      return Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          24.height,
          question?.title?.toText18() ?? Text(""),
          16.height,
          RatingBar.builder(
            initialRating: 3,
            minRating: starRating,
            direction: Axis.horizontal,
            allowHalfRating: false,
            itemCount: 5,
            itemPadding: const EdgeInsets.symmetric(horizontal: 8),
            itemBuilder: (context, _) => const Icon(
              Icons.star,
              color: Colors.amber,
            ),
            onRatingUpdate: (rating) {
              starRating = rating;
              answeredQuestions[parentIndex] = rating.toInt().toString();
            },
          ).paddingOnly(left: 22, right: 22, top: 12, bottom: 12).objectContainerView(disablePadding: true),
        ],
      );
    } else if (question?.type == "Faces") {
      // Faces = face rating
      return Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          24.height,
          question?.title?.toText18() ?? Text("asdasdasdasd"),
          16.height,
          GridView(
            gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount: 5, crossAxisSpacing: 7, mainAxisSpacing: 7),
            physics: const NeverScrollableScrollPhysics(),
            padding: const EdgeInsets.only(top: 0),
            shrinkWrap: true,
            children: [
              optionUI("poor.svg", question?.options?[0].optionId, parentIndex),
              optionUI("bad.svg", question?.options?[1].optionId, parentIndex),
              optionUI("normal.svg", question?.options?[2].optionId, parentIndex),
              optionUI("good.svg", question?.options?[3].optionId, parentIndex),
              optionUI("xcellent.svg", question?.options?[4].optionId, parentIndex),
            ],
          ),
        ],
      );
    } else {
      return Container();
    }
    return Container();
  }

  void performAPI() async {
    Utils.showLoading(context);
    List<Map<String, dynamic>> itgAnswersList = [];
    int index = 0;
    try {
      answeredQuestions.forEach((element) {
        itgAnswersList.add({
          "questionId": itgResponseData?.survey?.questions![index].questionId,
          "optionId": itgResponseData?.survey?.questions![index].type != "Stars" ? answeredQuestions[index] : null,
          "starRating": itgResponseData?.survey?.questions![index].type == "Stars" ? answeredQuestions[index] : null
        });
        index++;
      });

      ItgMainRes? res = await DashboardApiClient()
          .submitItgForm(comment: reviewText, masterId: itgResponseData!.notificationMasterId ?? "", itgList: itgAnswersList, serviceId: itgResponseData!.survey!.surveyId ?? 0);
      Utils.hideLoading(context);

      if (res!.mohemmItgResponseItem!.statusCode == 200) {
        Utils.showToast("Survey has been submitted successfully");
        Navigator.pop(context);
      } else {
        Utils.showToast(res.mohemmItgResponseItem!.message.toString());
      }
    } catch (ex) {
      Utils.hideLoading(context);
      Utils.handleException(ex, context, (msg) {
        Utils.confirmDialog(context, msg);
      });
    }
  }

  Widget radioOption(String title, String value, String groupValue, int answerIndex) {
    return Row(
      mainAxisAlignment: MainAxisAlignment.start,
      mainAxisSize: MainAxisSize.min,
      children: [
        Container(
          width: 24,
          height: 24,
          decoration: BoxDecoration(
            color: Colors.transparent,
            border: Border.all(color: MyColors.borderColor, width: 1),
            borderRadius: const BorderRadius.all(
              Radius.circular(100),
            ),
          ),
          padding: const EdgeInsets.all(4),
          child: Container(
            width: double.infinity,
            height: double.infinity,
            decoration: BoxDecoration(
              color: value == answeredQuestions[answerIndex] ? MyColors.greenColor : Colors.transparent,
              borderRadius: const BorderRadius.all(
                Radius.circular(100),
              ),
            ),
          ),
        ),
        6.width,
        title.toText12(color: MyColors.grey57Color),
        12.width
      ],
    ).onPress(() {
      answeredQuestions[answerIndex] = value;
      setState(() {});
    });
  }
}