import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_svg/flutter_svg.dart';
import 'package:go_router/go_router.dart';
import 'package:real_estate_mobile/core/constants/app_colors.dart';
import 'package:real_estate_mobile/features/auth/presentation/providers/auth_provider.dart';
import 'package:real_estate_mobile/features/home/presentation/widgets/featured_professionals_section.dart';
import 'package:real_estate_mobile/features/home/presentation/widgets/features_section.dart';
import 'package:real_estate_mobile/features/home/presentation/widgets/hero_section.dart';
import 'package:real_estate_mobile/features/home/presentation/widgets/home_header.dart';
import 'package:real_estate_mobile/features/home/presentation/widgets/testimonials_section.dart';
import 'package:real_estate_mobile/features/home/presentation/widgets/top_professionals_section.dart';
import 'package:real_estate_mobile/features/home/presentation/widgets/trust_stats_section.dart';

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

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

class _HomeScreenState extends ConsumerState<HomeScreen> {
  int _selectedIndex = 0;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: _buildBody(),
      bottomNavigationBar: _buildBottomNavBar(),
    );
  }

  Widget _buildBody() {
    // Only Home tab (index 0) has content for now
    switch (_selectedIndex) {
      case 0:
        return _buildHomeContent();
      case 1:
      case 2:
      case 3:
      default:
        return Center(
          child: Text(
            ['Home', 'Listings', 'Messages', 'Profile'][_selectedIndex],
            style: const TextStyle(
              fontFamily: 'Fractul',
              fontSize: 18,
              fontWeight: FontWeight.w600,
              color: AppColors.primaryDark,
            ),
          ),
        );
    }
  }

  Widget _buildHomeContent() {
    return SingleChildScrollView(
      child: Column(
        children: [
          // Header
          SafeArea(
            bottom: false,
            child: const HomeHeader(),
          ),

          // Hero Section with Search
          const HeroSection(),
          const SizedBox(height: 40),

          // Features Section
          const FeaturesSection(),
          const SizedBox(height: 40),

          // Featured Professionals Carousel
          const FeaturedProfessionalsSection(),
          const SizedBox(height: 40),

          // Top Professionals Section (Agents/Lenders tabs)
          const TopProfessionalsSection(),
          const SizedBox(height: 40),

          // Trust & Stats Section
          const TrustStatsSection(),
          const SizedBox(height: 40),

          // Testimonials Section
          const TestimonialsSection(),
          const SizedBox(height: 40),

          // Footer
          _buildFooter(),
        ],
      ),
    );
  }

  // ── Bottom Navigation Bar (matches Figma node 49:6485) ──
  Widget _buildBottomNavBar() {
    return Container(
      decoration: const BoxDecoration(
        color: Colors.white,
        border: Border(
          top: BorderSide(color: Color(0xFFE8E8E8), width: 1),
        ),
      ),
      child: SafeArea(
        top: false,
        child: Padding(
          padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 12),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            children: [
              _buildNavItem(
                index: 0,
                svgPath: 'assets/icons/nav_home_icon.svg',
                fallbackIcon: Icons.home,
              ),
              _buildNavItem(
                index: 1,
                svgPath: 'assets/icons/nav_list_icon.svg',
                fallbackIcon: Icons.list,
              ),
              _buildNavItem(
                index: 2,
                svgPath: 'assets/icons/nav_messages_icon.svg',
                fallbackIcon: Icons.chat_bubble,
              ),
              _buildNavItem(
                index: 3,
                svgPath: 'assets/icons/nav_profile_icon.svg',
                fallbackIcon: Icons.person_outline,
              ),
            ],
          ),
        ),
      ),
    );
  }

  Widget _buildNavItem({
    required int index,
    required String svgPath,
    required IconData fallbackIcon,
  }) {
    final isSelected = _selectedIndex == index;

    return GestureDetector(
      onTap: () {
        if (index == 1) {
          context.push('/agents/search');
          return;
        }
        if (index == 2 || index == 3) {
          final authState = ref.read(authProvider);
          if (authState.status != AuthStatus.authenticated) {
            context.push('/login');
            return;
          }
        }
        setState(() => _selectedIndex = index);
      },
      behavior: HitTestBehavior.opaque,
      child: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
        child: SvgPicture.asset(
          svgPath,
          width: 24,
          height: 24,
          colorFilter: isSelected
              ? const ColorFilter.mode(AppColors.primaryDark, BlendMode.srcIn)
              : const ColorFilter.mode(AppColors.accentOrange, BlendMode.srcIn),
          placeholderBuilder: (_) => Icon(
            fallbackIcon,
            size: 24,
            color: isSelected ? AppColors.primaryDark : AppColors.accentOrange,
          ),
        ),
      ),
    );
  }

  Widget _buildFooter() {
    return Container(
      width: double.infinity,
      padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 24),
      color: AppColors.primaryDark,
      child: Column(
        children: [
          Image.asset(
            'assets/icons/logo.png',
            width: 109,
            height: 29,
            color: Colors.white,
          ),
          const SizedBox(height: 16),
          Row(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              _buildFooterLink('Home'),
              _buildFooterDot(),
              _buildFooterLink('About'),
              _buildFooterDot(),
              _buildFooterLink('Contact'),
              _buildFooterDot(),
              _buildFooterLink('FAQ'),
            ],
          ),
          const SizedBox(height: 16),
          Text(
            '\u00A9 2025 RE-QuestN. All rights reserved.',
            style: TextStyle(
              fontFamily: 'SourceSerif4',
              fontSize: 12,
              fontWeight: FontWeight.w400,
              color: Colors.white.withValues(alpha: 0.6),
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildFooterLink(String text) {
    return Text(
      text,
      style: const TextStyle(
        fontFamily: 'SourceSerif4',
        fontSize: 14,
        fontWeight: FontWeight.w400,
        color: Colors.white,
      ),
    );
  }

  Widget _buildFooterDot() {
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 12),
      child: Text(
        '\u2022',
        style: TextStyle(
          fontSize: 14,
          color: Colors.white.withValues(alpha: 0.5),
        ),
      ),
    );
  }
}