import 'package:flutter/material.dart';
import '../l10n/app_localizations.dart';
import '../theme/app_colors.dart';
import '../theme/app_text_styles.dart';
import '../services/encouragement_service.dart';
import '../services/storage_service.dart';
import '../services/di.dart';
import 'focus_screen.dart';
import 'history_screen.dart';
import 'settings_screen.dart';
import 'profile_screen.dart';

/// Home Screen - Loads default duration from settings
class HomeScreen extends StatefulWidget {
  final EncouragementService encouragementService;

  const HomeScreen({
    super.key,
    required this.encouragementService,
  });

  @override
  State<HomeScreen> createState() => _HomeScreenState();
}

class _HomeScreenState extends State<HomeScreen> {
  int _defaultDuration = 25;
  final StorageService _storageService = getIt<StorageService>();

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

  Future<void> _loadDefaultDuration() async {
    try {
      final duration = await SettingsScreen.getDefaultDuration();
      setState(() {
        _defaultDuration = duration;
      });
    } catch (e) {
      // Use default duration if loading fails
      setState(() {
        _defaultDuration = 25;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    final l10n = AppLocalizations.of(context)!;
    final progress = _storageService.getUserProgress();

    return Scaffold(
      backgroundColor: AppColors.background,
      body: SafeArea(
        child: Padding(
          padding: const EdgeInsets.all(24.0),
          child: Column(
            children: [
              // Points Card at the top
              _buildPointsCard(context, progress),

              const SizedBox(height: 32),

              // App Title
              Text(
                l10n.appTitle,
                style: AppTextStyles.appTitle,
              ),

              const SizedBox(height: 60),

              // Duration Display
              Container(
                padding: const EdgeInsets.symmetric(
                  horizontal: 32,
                  vertical: 16,
                ),
                decoration: BoxDecoration(
                  color: AppColors.white,
                  borderRadius: BorderRadius.circular(16),
                ),
                child: Text(
                  l10n.minutesValue(_defaultDuration, l10n.minutes(_defaultDuration)),
                  style: const TextStyle(
                    fontFamily: 'Nunito',
                    fontSize: 28,
                    fontWeight: FontWeight.w600,
                    color: AppColors.textPrimary,
                  ),
                ),
              ),

              const SizedBox(height: 60),

              // Start Focusing Button
              SizedBox(
                width: double.infinity,
                child: ElevatedButton(
                  onPressed: () async {
                    final result = await Navigator.push(
                      context,
                      MaterialPageRoute(
                        builder: (context) => FocusScreen(
                          durationMinutes: _defaultDuration,
                          encouragementService: widget.encouragementService,
                        ),
                      ),
                    );
                    // Reload duration and refresh points when returning
                    if (result == true || mounted) {
                      _loadDefaultDuration();
                      setState(() {}); // Refresh to show updated points
                    }
                  },
                  child: Row(
                    mainAxisAlignment: MainAxisAlignment.center,
                    children: [
                      Text(l10n.startFocusing),
                      const SizedBox(width: 8),
                      Icon(
                        Icons.play_arrow,
                        color: AppColors.white,
                      ),
                    ],
                  ),
                ),
              ),

              const SizedBox(height: 24),

              // Helper Text
              Text(
                l10n.tapDistractionAnytime,
                style: AppTextStyles.helperText,
                textAlign: TextAlign.center,
              ),

              const Spacer(),

              // Bottom Navigation (simplified for MVP)
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                children: [
                  TextButton.icon(
                    onPressed: () {
                      Navigator.push(
                        context,
                        MaterialPageRoute(
                          builder: (context) => const HistoryScreen(),
                        ),
                      );
                    },
                    icon: const Icon(Icons.bar_chart),
                    label: Text(l10n.history),
                  ),
                  TextButton.icon(
                    onPressed: () async {
                      await Navigator.push(
                        context,
                        MaterialPageRoute(
                          builder: (context) => const SettingsScreen(),
                        ),
                      );
                      // Reload duration after settings
                      _loadDefaultDuration();
                    },
                    icon: const Icon(Icons.settings),
                    label: Text(l10n.settings),
                  ),
                ],
              ),
            ],
          ),
        ),
      ),
    );
  }

  /// Build points card widget
  Widget _buildPointsCard(BuildContext context, progress) {
    final l10n = AppLocalizations.of(context)!;
    return GestureDetector(
      onTap: () async {
        // Navigate to ProfileScreen
        await Navigator.push(
          context,
          MaterialPageRoute(
            builder: (context) => const ProfileScreen(),
          ),
        );
        // Refresh points when returning from ProfileScreen
        setState(() {});
      },
      child: Container(
        padding: const EdgeInsets.all(16),
        decoration: BoxDecoration(
          gradient: LinearGradient(
            colors: [
              AppColors.primary.withValues(alpha: 0.1),
              AppColors.primary.withValues(alpha: 0.05),
            ],
            begin: Alignment.topLeft,
            end: Alignment.bottomRight,
          ),
          borderRadius: BorderRadius.circular(16),
          border: Border.all(
            color: AppColors.primary.withValues(alpha: 0.2),
            width: 1,
          ),
        ),
        child: Row(
          children: [
            // Left side: Points and Level
            Expanded(
              child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceAround,
                children: [
                  // Points
                  Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Row(
                        children: [
                          const Text(
                            '⚡',
                            style: TextStyle(fontSize: 20),
                          ),
                          const SizedBox(width: 4),
                          Text(
                            '${progress.totalPoints}',
                            style: const TextStyle(
                              fontFamily: 'Nunito',
                              fontSize: 24,
                              fontWeight: FontWeight.bold,
                              color: AppColors.primary,
                            ),
                          ),
                        ],
                      ),
                      Text(
                        l10n.points,
                        style: const TextStyle(
                          fontFamily: 'Nunito',
                          fontSize: 12,
                          color: AppColors.textSecondary,
                        ),
                      ),
                    ],
                  ),
                  // Level
                  Column(
                    crossAxisAlignment: CrossAxisAlignment.start,
                    children: [
                      Row(
                        children: [
                          const Text(
                            '🎖️',
                            style: TextStyle(fontSize: 20),
                          ),
                          const SizedBox(width: 4),
                          Text(
                            'Lv ${progress.level}',
                            style: const TextStyle(
                              fontFamily: 'Nunito',
                              fontSize: 24,
                              fontWeight: FontWeight.bold,
                              color: AppColors.primary,
                            ),
                          ),
                        ],
                      ),
                      Text(
                        l10n.level,
                        style: const TextStyle(
                          fontFamily: 'Nunito',
                          fontSize: 12,
                          color: AppColors.textSecondary,
                        ),
                      ),
                    ],
                  ),
                ],
              ),
            ),
            // Right side: Check-in status
            Container(
              padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
              decoration: BoxDecoration(
                color: progress.hasCheckedInToday
                    ? AppColors.success.withValues(alpha: 0.1)
                    : AppColors.white.withValues(alpha: 0.5),
                borderRadius: BorderRadius.circular(12),
              ),
              child: Column(
                children: [
                  Text(
                    progress.hasCheckedInToday ? '✓' : '📅',
                    style: const TextStyle(fontSize: 20),
                  ),
                  const SizedBox(height: 4),
                  Text(
                    progress.hasCheckedInToday ? l10n.checked : l10n.checkIn,
                    style: TextStyle(
                      fontFamily: 'Nunito',
                      fontSize: 10,
                      color: progress.hasCheckedInToday
                          ? AppColors.success
                          : AppColors.textSecondary,
                      fontWeight: FontWeight.w600,
                    ),
                  ),
                  if (progress.consecutiveCheckIns > 0)
                    Text(
                      '🔥 ${progress.consecutiveCheckIns}',
                      style: const TextStyle(
                        fontFamily: 'Nunito',
                        fontSize: 12,
                        fontWeight: FontWeight.bold,
                        color: AppColors.primary,
                      ),
                    ),
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }
}