import 'package:flutter/material.dart';
import 'package:openclosenew/home_screen.dart';

class PageViewModel {
  String title;
  String body;
  String image;

  PageViewModel({required this.title, required this.body, required this.image});
}

class IntroScreen extends StatefulWidget {
  @override
  State<IntroScreen> createState() => _IntroScreenState();
}

class _IntroScreenState extends State<IntroScreen> {
  int pageIndex = 0;
  PageController pageController = PageController();

  final List<PageViewModel> pages = [
    PageViewModel(
      title: '',
      body: 'Best Hotels and Restaurants around you...',
      image: 'assets/images/onboarding_image_1.png',
    ),
    PageViewModel(
      title: '',
      body: 'Best Medicals, Clinics and Hospitals around you...',
      image: 'assets/images/onboarding_image_2.png',
    ),
    PageViewModel(
      title: '',
      body: 'Best Grocery and all Other Shops around you...',
      image: "assets/images/onboarding_image_3.png",
    )
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          Expanded(
            child: PageView.builder(
              itemCount: pages.length,
              controller: pageController,
              physics: BouncingScrollPhysics(),
              onPageChanged: (val) {
                setState(() {
                  pageIndex = val;
                });
              },
              itemBuilder: (context, pos) {
                PageViewModel item = pages[pos];
                return Center(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Image.asset(item.image),
                      SizedBox(
                        height: 16,
                      ),
                      Text(item.body)
                    ],
                  ),
                );
              },
            ),
          ),
          Padding(
            padding: const EdgeInsets.only(bottom: 16, left: 70, right: 16),
            child: Row(
              children: [
                Spacer(),
                Row(
                  children: [
                    for (int i = 0; i < pages.length; i++)
                      Container(
                        height: 8,
                        width: (pageIndex == i) ? 20 : 8,
                        margin: EdgeInsets.only(right: 8),
                        decoration: BoxDecoration(
                            color: (pageIndex == i)
                                ? Colors.green
                                : Colors.green.shade100,
                            borderRadius: BorderRadius.circular(8)),
                      ),
                  ],
                ),
                Spacer(),
                (pageIndex == 2)
                    ? FloatingActionButton(
                        onPressed: () {
                          Navigator.push(context,
                              MaterialPageRoute(builder: (_) => Register()));
                        },
                        elevation: 0,
                        backgroundColor: Colors.green,
                        child: Icon(
                          Icons.arrow_forward_rounded,
                          color: Colors.white,
                        ),
                      )
                    : TextButton(
                        onPressed: () {
                          pageController.jumpToPage(2);
                        },
                        child: Text(
                          "Skip",
                          style: TextStyle(color: Colors.grey.shade600),
                        ),
                      ),
              ],
            ),
          )
        ],
      ),
    );
  }
}