import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../../game/models/season.dart';
import '../../game/models/stage.dart';
import '../../l10n/gen/app_localizations.dart';
import '../../state/providers.dart';
import '../widgets/season_background.dart';
import 'game_screen.dart';
import 'season_map_screen.dart';

class HomeScreen extends ConsumerWidget {
  const HomeScreen({super.key});

  static const _logoColors = [
    Color(0xFFFF7EB3),
    Color(0xFFFFD166),
    Color(0xFF6FCDF5),
    Color(0xFF7EDB9C),
  ];

  @override
  Widget build(BuildContext context, WidgetRef ref) {
    final l10n = AppLocalizations.of(context)!;
    final streak = ref.watch(streakProvider);
    final best = ref.watch(endlessBestProvider);

    return Scaffold(
      backgroundColor: Colors.transparent,
      body: Stack(
        fit: StackFit.expand,
        children: [
          const SeasonBackground(theme: SeasonTheme.fallback),
          SafeArea(
            child: Center(
              child: Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  _logoMark(),
                  const SizedBox(height: 18),
                  Text(
                    l10n.appTitle,
                    style: Theme.of(context)
                        .textTheme
                        .displaySmall
                        ?.copyWith(fontWeight: FontWeight.w900),
                  ),
                  if (streak.current > 0) ...[
                    const SizedBox(height: 10),
                    Chip(
                      avatar: const Icon(
                        Icons.local_fire_department,
                        color: Colors.deepOrange,
                        size: 20,
                      ),
                      label: Text(
                        '${streak.current}',
                        style: Theme.of(context).textTheme.titleMedium,
                      ),
                    ),
                  ],
                  const SizedBox(height: 44),
                  FilledButton(
                    style: FilledButton.styleFrom(
                      padding: const EdgeInsets.symmetric(
                          horizontal: 56, vertical: 18),
                      textStyle: Theme.of(context).textTheme.titleLarge,
                    ),
                    onPressed: () {
                      if (!(ModalRoute.of(context)?.isCurrent ?? true)) return;
                      Navigator.of(context).push(
                        MaterialPageRoute(
                            builder: (_) => const SeasonMapScreen()),
                      );
                    },
                    child: Text(l10n.adventure),
                  ),
                  const SizedBox(height: 14),
                  OutlinedButton(
                    style: OutlinedButton.styleFrom(
                      padding: const EdgeInsets.symmetric(
                          horizontal: 40, vertical: 14),
                      textStyle: Theme.of(context).textTheme.titleMedium,
                    ),
                    onPressed: () {
                      if (!(ModalRoute.of(context)?.isCurrent ?? true)) return;
                      ref.read(seasonFlowProvider.notifier).clear();
                      ref.read(gameSessionProvider.notifier).startStage(
                            StageConfig.endless(
                              seed: DateTime.now().millisecondsSinceEpoch,
                            ),
                          );
                      Navigator.of(context).push(
                        MaterialPageRoute(
                            builder: (_) => const GameScreen()),
                      );
                    },
                    child: Text(l10n.classic),
                  ),
                  if (best > 0) ...[
                    const SizedBox(height: 10),
                    Text(
                      l10n.bestScore(best),
                      style: TextStyle(
                        color: Colors.white.withValues(alpha: 0.55),
                      ),
                    ),
                  ],
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }

  Widget _logoMark() {
    return SizedBox(
      width: 96,
      height: 96,
      child: GridView.count(
        crossAxisCount: 2,
        mainAxisSpacing: 5,
        crossAxisSpacing: 5,
        physics: const NeverScrollableScrollPhysics(),
        children: [
          for (final color in _logoColors)
            DecoratedBox(
              decoration: BoxDecoration(
                borderRadius: BorderRadius.circular(11),
                gradient: LinearGradient(
                  begin: Alignment.topLeft,
                  end: Alignment.bottomRight,
                  colors: [
                    Color.lerp(color, Colors.white, 0.28)!,
                    color,
                    Color.lerp(color, Colors.black, 0.22)!,
                  ],
                ),
                boxShadow: [
                  BoxShadow(
                    color: color.withValues(alpha: 0.45),
                    blurRadius: 14,
                  ),
                ],
              ),
            ),
        ],
      ),
    );
  }
}