import 'package:animated_splash_screen/animated_splash_screen.dart';
import 'package:flutter/material.dart';
import 'package:hexcolor/hexcolor.dart';
import 'package:idrocap/storage/secure_store.dart';
import 'package:idrocap/storage/storage_keys.dart';

import '../constant/globals.dart' as globals;
import '../login.dart';

class Splash extends StatefulWidget {
  @override
  State<Splash> createState() => _SplashState();
}

class _SplashState extends State<Splash> {
  Widget _nextScreen = Login();

  @override
  void initState() {
    super.initState();
    _decideNext();
  }

  Future<void> _decideNext() async {
    try {
      final remember = await SecureStore.readBool(StorageKeys.rememberMe);
      final token = await SecureStore.read(StorageKeys.accessToken);

      if (remember && token != null && token.isNotEmpty) {
        globals.token = token;
        globals.headers = {
          "Content-Type": "application/json",
          "Authorization": "Bearer $token",
        };

        setState(() {
          _nextScreen = const _GoToPratiche();
        });
      } else {
        setState(() {
          _nextScreen = Login();
        });
      }
    } catch (_) {
      setState(() {
        _nextScreen = Login();
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return PopScope(
      canPop: false,
      child: AnimatedSplashScreen(
        splashIconSize: 200,
        duration: 3000,
        splash: const Text(
          "Idrocap",
          style: TextStyle(color: Colors.white),
        ),
        nextScreen: _nextScreen,
        splashTransition: SplashTransition.fadeTransition,
        backgroundColor: HexColor(globals.colorAppbar),
      ),
    );
  }
}

/// Schermata “ponte” che fa redirect alla route principale.
/// Così non devi importare la pagina Pratiche e non rompi dipendenze.
class _GoToPratiche extends StatefulWidget {
  const _GoToPratiche();

  @override
  State<_GoToPratiche> createState() => _GoToPraticheState();
}

class _GoToPraticheState extends State<_GoToPratiche> {
  @override
  void initState() {
    super.initState();
    // dopo il primo frame, per evitare errori di navigation
    WidgetsBinding.instance.addPostFrameCallback((_) {
      Navigator.of(context).pushNamedAndRemoveUntil(
        'pratiche',
        (route) => false,
      );
    });
  }

  @override
  Widget build(BuildContext context) {
    // schermata vuota mentre fa redirect
    return const Scaffold(body: SizedBox.shrink());
  }
}