import 'package:sysfarma_mobile/src/core/storage/tenant_session_store.dart';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:go_router/go_router.dart';

class SplashScreen extends ConsumerStatefulWidget {
  const SplashScreen({super.key});

  @override
  ConsumerState<SplashScreen> createState() => _SplashScreenState();
}

class _SplashScreenState extends ConsumerState<SplashScreen>
    with SingleTickerProviderStateMixin {
  late final AnimationController _pulseController;

  @override
  void initState() {
    super.initState();
    // Pulso suave mientras resuelve la sesion - antes el logo quedaba
    // completamente estatico, la primera imagen que ve el usuario al abrir
    // la app.
    _pulseController = AnimationController(
      vsync: this,
      duration: const Duration(milliseconds: 900),
    )..repeat(reverse: true);
    _navigate();
  }

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

  Future<void> _navigate() async {
    final session = await ref.read(tenantSessionStoreProvider).readSession();
    if (!mounted) return;
    if (session != null && session.token.isNotEmpty) {
      context.go('/home');
    } else {
      context.go('/login');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.white,
      body: Center(
        child: ScaleTransition(
          scale: Tween<double>(begin: 0.92, end: 1.0).animate(
            CurvedAnimation(
              parent: _pulseController,
              curve: Curves.easeInOut,
            ),
          ),
          child: const SizedBox(
            width: 96,
            height: 96,
            child: Image(
              image: AssetImage('assets/icon/app_icon.png'),
              fit: BoxFit.contain,
            ),
          ),
        ),
      ),
    );
  }
}