Rain/lib/app/ui/onboarding.dart

import 'package:flutter/material.dart';
import 'package:gap/gap.dart';
import 'package:rain/app/data/db.dart';
import 'package:rain/app/ui/geolocation.dart';
import 'package:rain/app/ui/widgets/button.dart';
import 'package:rain/main.dart';
import 'package:get/get.dart';

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

  @override
  State<OnBording> createState() => _OnBordingState();
}

class _OnBordingState extends State<OnBording> {
  late PageController pageController;
  int pageIndex = 0;

  @override
  void initState() {
    super.initState();
    pageController = PageController(initialPage: 0);
  }

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

  void onBoardHome() {
    settings.onboard = true;
    isar.writeTxnSync(() => isar.settings.putSync(settings));
    Get.off(
      () => const SelectGeolocation(isStart: true),
      transition: Transition.downToUp,
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      body: SafeArea(
        child: Column(
          children: [
            _buildPageView(),
            _buildDotIndicators(),
            _buildActionButton(),
          ],
        ),
      ),
    );
  }

  Widget _buildPageView() {
    return Expanded(
      child: PageView.builder(
        controller: pageController,
        itemCount: data.length,
        onPageChanged: (index) {
          setState(() {
            pageIndex = index;
          });
        },
        itemBuilder: (context, index) => OnboardContent(
          image: data[index].image,
          title: data[index].title,
          description: data[index].description,
        ),
      ),
    );
  }

  Widget _buildDotIndicators() {
    return Row(
      mainAxisAlignment: MainAxisAlignment.center,
      children: List.generate(
        data.length,
        (index) => Padding(
          padding: const EdgeInsets.symmetric(horizontal: 5),
          child: DotIndicator(isActive: index == pageIndex),
        ),
      ),
    );
  }

  Widget _buildActionButton() {
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 8),
      child: MyTextButton(
        buttonName: pageIndex == data.length - 1 ? 'start'.tr : 'next'.tr,
        onPressed: () {
          if (pageIndex == data.length - 1) {
            onBoardHome();
          } else {
            pageController.nextPage(
              duration: const Duration(milliseconds: 300),
              curve: Curves.ease,
            );
          }
        },
      ),
    );
  }
}

class DotIndicator extends StatelessWidget {
  const DotIndicator({super.key, this.isActive = false});

  final bool isActive;

  @override
  Widget build(BuildContext context) {
    return AnimatedContainer(
      duration: const Duration(milliseconds: 300),
      height: 8,
      width: 8,
      decoration: BoxDecoration(
        color: isActive
            ? context.theme.colorScheme.secondary
            : context.theme.colorScheme.secondaryContainer,
        shape: BoxShape.circle,
      ),
    );
  }
}

class Onboard {
  final String image, title, description;

  Onboard({
    required this.image,
    required this.title,
    required this.description,
  });
}

final List<Onboard> data = [
  Onboard(
    image: 'assets/icons/Rain.png',
    title: 'name'.tr,
    description: 'description'.tr,
  ),
  Onboard(
    image: 'assets/icons/Design.png',
    title: 'name2'.tr,
    description: 'description2'.tr,
  ),
  Onboard(
    image: 'assets/icons/Team.png',
    title: 'name3'.tr,
    description: 'description3'.tr,
  ),
];

class OnboardContent extends StatelessWidget {
  const OnboardContent({
    super.key,
    required this.image,
    required this.title,
    required this.description,
  });

  final String image, title, description;

  @override
  Widget build(BuildContext context) {
    return Column(
      children: [
        Flexible(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Image.asset(image, scale: 5),
              Text(
                title,
                style: context.textTheme.titleLarge?.copyWith(
                  fontWeight: FontWeight.w600,
                ),
              ),
              const Gap(10),
              SizedBox(
                width: 300,
                child: Text(
                  description,
                  style: context.textTheme.labelLarge?.copyWith(fontSize: 14),
                  textAlign: TextAlign.center,
                ),
              ),
            ],
          ),
        ),
      ],
    );
  }
}