tm_app/lib/views/tenders/widgets/main_tenders_slider.dart

import 'package:flutter/material.dart';
import 'package:flutter_svg/svg.dart';
import 'package:tm_app/core/routes/app_routes.dart';
import 'package:tm_app/core/theme/colors.dart';

import '../../../core/constants/assets.dart';
import '../../../core/utils/size_config.dart';
import '../models/tender_model.dart';
import 'tender_card.dart';

class MainTendersSlider extends StatefulWidget {
  const MainTendersSlider({super.key});

  @override
  State<MainTendersSlider> createState() => _MainTendersSliderState();
}

class _MainTendersSliderState extends State<MainTendersSlider> {
  final PageController pageController = PageController(initialPage: 0);

  List<Tender> likedTenders = [];
  List<Tender> dislikedTenders = [];
  int currentPage = 1;
  List<Tender> rejectedTenders = [];
  List<Tender> submittedTenders = [];

  void _onDislike(Tender tender) {
    if (likedTenders.contains(tender)) {
      likedTenders.remove(tender);
    }

    if (!dislikedTenders.contains(tender)) {
      dislikedTenders.add(tender);
    } else {
      dislikedTenders.remove(tender);
    }
    setState(() {});
  }

  void _onLike(Tender tender) {
    if (dislikedTenders.contains(tender)) {
      dislikedTenders.remove(tender);
    }

    if (!likedTenders.contains(tender)) {
      likedTenders.add(tender);
    } else {
      likedTenders.remove(tender);
    }
    setState(() {});
  }

  void _goToPreviousPage() {
    pageController.previousPage(
      duration: Duration(milliseconds: 300),
      curve: Curves.easeInOutCubic,
    );
    setState(() {
      if (currentPage == 1) {
        return;
      }
      currentPage = currentPage - 1;
    });
  }

  void _goToNextPage() {
    pageController.nextPage(
      duration: Duration(milliseconds: 300),
      curve: Curves.easeInOutCubic,
    );
    setState(() {
      if (currentPage == sampleTenders.length) {
        return;
      }
      currentPage = currentPage + 1;
    });
  }

  void _onReject(Tender tender) {
    if (rejectedTenders.contains(tender)) {
      rejectedTenders.remove(tender);
    } else {
      rejectedTenders.add(tender);
    }
    setState(() {});
  }

  void _onSubmit(Tender tender) {
    if (submittedTenders.contains(tender)) {
      submittedTenders.remove(tender);
    } else {
      submittedTenders.add(tender);
    }

    setState(() {});
  }

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

  @override
  Widget build(BuildContext context) {
    return Stack(
      children: [
        SizedBox(
          width: double.infinity,
          height: 717.0.h(),
          child: PageView.builder(
            controller: pageController,
            scrollDirection: Axis.horizontal,
            itemCount: sampleTenders.length,
            onPageChanged: (index) {
              setState(() {
                currentPage = index + 1;
              });
            },
            itemBuilder: (context, index) {
              final tender = sampleTenders[index];
              return TenderCard(
                date: tender.date,
                deadline: tender.deadline,
                title: tender.title,
                description: tender.description,
                tenderId: tender.tenderId,
                location: tender.location,
                country: tender.country,
                matchPercentage: tender.matchPercentage,
                isLiked: likedTenders.contains(tender),
                isDisliked: dislikedTenders.contains(tender),
                onDislike: () => _onDislike(tender),
                onLike: () => _onLike(tender),
                onApply: () => TenderDetailRouteData().push(context),
                onReject: () => _onReject(tender),
                onSubmit: () => _onSubmit(tender),
                rejected: rejectedTenders.contains(tender),
                submitted: submittedTenders.contains(tender),
              );
            },
          ),
        ),
        Positioned(
          top: 607.0.h(),
          bottom: 52.0.h(),
          left: 9.0.w(),
          right: 9.0.w(),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              GestureDetector(
                onTap: _goToPreviousPage,
                child: Container(
                  width: 32.0.w(),
                  height: 32.0.w(),
                  decoration: BoxDecoration(
                    shape: BoxShape.circle,
                    border: Border.all(color: AppColors.iconColor, width: 1.5),
                  ),
                  alignment: Alignment.center,
                  child: SvgPicture.asset(
                    AssetsManager.arrowLeftSmall,
                    colorFilter: ColorFilter.mode(
                      AppColors.iconColor,
                      BlendMode.srcATop,
                    ),
                  ),
                ),
              ),
              Text(
                '$currentPage/${sampleTenders.length}',
                style: TextStyle(
                  fontSize: 14.0.sp(),
                  fontWeight: FontWeight.w500,
                  color: AppColors.grey,
                ),
              ),
              GestureDetector(
                onTap: _goToNextPage,
                child: Container(
                  width: 32.0.w(),
                  height: 32.0.w(),
                  decoration: BoxDecoration(
                    shape: BoxShape.circle,
                    border: Border.all(color: AppColors.iconColor, width: 1.5),
                  ),
                  alignment: Alignment.center,
                  child: SvgPicture.asset(
                    AssetsManager.arrowRightSmall,
                    colorFilter: ColorFilter.mode(
                      AppColors.iconColor,
                      BlendMode.srcATop,
                    ),
                  ),
                ),
              ),
            ],
          ),
        ),
      ],
    );
  }
}