import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:tm_app/core/theme/colors.dart';
import 'package:tm_app/core/utils/size_config.dart';
import 'package:tm_app/view_models/tenders_view_model.dart';
import 'package:tm_app/views/shared/desktop_navigation_widget.dart';
import 'package:tm_app/views/tenders/widgets/main_tenders_slider.dart';

import '../../../core/constants/common_strings.dart';

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

  @override
  State<DesktopTendersPage> createState() => _DesktopTendersPageState();
}

class _DesktopTendersPageState extends State<DesktopTendersPage> {
  late final TendersViewModel viewModel;
  @override
  void initState() {
    super.initState();
    viewModel = context.read<TendersViewModel>();
    viewModel.addListener(_viewModelListener);
  }

  void _viewModelListener() {
    if (viewModel.feedbackErrorMessage != null) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          backgroundColor: AppColors.error,
          content: Text(viewModel.feedbackErrorMessage!),
        ),
      );
    }
    if (viewModel.tenderApprovalErrorMessage != null) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(
          backgroundColor: AppColors.error,
          content: Text(viewModel.tenderApprovalErrorMessage!),
        ),
      );
    }
  }

  @override
  void dispose() {
    viewModel.removeListener(_viewModelListener);
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: AppColors.backgroundColor,
      body: SingleChildScrollView(
        child: Consumer<TendersViewModel>(
          builder: (context, viewModel, child) {
            if (viewModel.isLoading) {
              return Center(
                child: CircularProgressIndicator(color: AppColors.jellyBean),
              );
            }
            if (viewModel.errorMessage != null) {
              return Center(child: Text(viewModel.errorMessage!));
            }
            if (viewModel.tendersResponse?.data?.tenders == null ||
                viewModel.tendersResponse!.data!.tenders!.isEmpty) {
              return Center(child: Text(CommonStrings.noData));
            }
            return Column(
              children: [
                DesktopNavigationWidget(
                  currentIndex: 1, // Tenders index
                ),
                SizedBox(
                  width: 740,
                  height: 800,
                  child: Padding(
                    padding: EdgeInsets.symmetric(vertical: 24.0.h()),
                    child: MainTendersSlider(
                      tenders: viewModel.tendersResponse?.data?.tenders ?? [],
                      isDesktop: true,
                    ),
                  ),
                ),
              ],
            );
          },
        ),
      ),
    );
  }
}