import 'dart:ui';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:google_fonts/google_fonts.dart';
import 'package:intl/intl.dart';
import 'package:provider/provider.dart';

import '../models/drink_type.dart';
import '../services/hydration_service.dart';
import '../widgets/fluid_sphere_button.dart';

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

  @override
  Widget build(BuildContext context) {
    final hydration = context.watch<HydrationService>();
    final dynamicColor = hydration.dynamicWaterColor;
    final size = MediaQuery.of(context).size;

    return Scaffold(
      body: Stack(
        children: [
          Positioned(
            top: -100,
            left: -100,
            child: ImageFiltered(
              imageFilter: ImageFilter.blur(sigmaX: 100, sigmaY: 100),
              child: Container(
                width: 450,
                height: 450,
                decoration: BoxDecoration(
                  shape: BoxShape.circle,
                  color: dynamicColor.withOpacity(0.15),
                ),
              ),
            ),
          ),
          Positioned(
            top: size.height * 0.3,
            right: -100,
            child: ImageFiltered(
              imageFilter: ImageFilter.blur(sigmaX: 80, sigmaY: 80),
              child: Container(
                width: 300,
                height: 300,
                decoration: BoxDecoration(
                  shape: BoxShape.circle,
                  color: Colors.purpleAccent.withOpacity(0.05),
                ),
              ),
            ),
          ),

          SafeArea(
            child: Column(
              children: [
                const SizedBox(height: 10),
                _buildModernHeader(context, hydration),

                Expanded(
                  child: Center(
                    child: Stack(
                      alignment: Alignment.center,
                      children: [
                        Container(
                          width: 300,
                          height: 300,
                          decoration: BoxDecoration(
                              shape: BoxShape.circle,
                              border: Border.all(
                                color: dynamicColor.withOpacity(0.05),
                                width: 1,
                              )
                          ),
                        ),
                        FluidSphereButton(
                          percentage: hydration.percentage,
                          waterColor: dynamicColor,
                          onLongPressStart: () => HapticFeedback.heavyImpact(),
                          onLongPressEnd: () {
                            context.read<HydrationService>().addWater(200);
                            HapticFeedback.mediumImpact();
                          },
                        ),
                      ],
                    ),
                  ),
                ),

                Padding(
                  padding: const EdgeInsets.only(bottom: 25),
                  child: AnimatedSwitcher(
                    duration: const Duration(milliseconds: 500),
                    child: Text(
                      hydration.statusText,
                      key: ValueKey(hydration.statusText),
                      style: GoogleFonts.montserrat(
                          color: dynamicColor.withOpacity(0.8),
                          fontSize: 13,
                          letterSpacing: 3.0,
                          fontWeight: FontWeight.w600
                      ),
                    ),
                  ),
                ),

                _buildFloatingDock(context, hydration),
                const SizedBox(height: 110),
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget _buildModernHeader(BuildContext context, HydrationService service) {
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 32.0, vertical: 20),
      child: Column(
        children: [
          Row(
            mainAxisAlignment: MainAxisAlignment.spaceBetween,
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    DateFormat('MMM d, EEEE').format(DateTime.now()).toUpperCase(),
                    style: GoogleFonts.montserrat(
                      fontSize: 12,
                      fontWeight: FontWeight.w600,
                      color: Colors.grey.shade400,
                      letterSpacing: 1.5,
                    ),
                  ),
                  const SizedBox(height: 8),
                  RichText(
                    text: TextSpan(
                      children: [
                        TextSpan(
                          text: "${(service.percentage * 100).toInt()}",
                          style: GoogleFonts.montserrat(
                            color: Colors.black87,
                            fontSize: 64,
                            fontWeight: FontWeight.w200,
                            height: 1.0,
                          ),
                        ),
                        TextSpan(
                          text: "%",
                          style: GoogleFonts.montserrat(
                            color: Colors.black54,
                            fontSize: 24,
                            fontWeight: FontWeight.w300,
                            fontFeatures: [const FontFeature.superscripts()],
                          ),
                        ),
                      ],
                    ),
                  ),
                ],
              ),

              Column(
                crossAxisAlignment: CrossAxisAlignment.end,
                children: [
                  Container(
                    width: 40,
                    height: 40,
                    decoration: BoxDecoration(
                        color: Colors.white.withOpacity(0.5),
                        shape: BoxShape.circle,
                        boxShadow: [
                          BoxShadow(
                              color: Colors.black.withOpacity(0.03),
                              blurRadius: 10,
                              offset: const Offset(0, 4)
                          )
                        ]
                    ),
                    child: IconButton(
                      icon: Icon(Icons.refresh, size: 20, color: service.dynamicWaterColor),
                      onPressed: () {},
                    ),
                  ),
                  const SizedBox(height: 12),
                  Text(
                    "TARGET",
                    style: GoogleFonts.montserrat(fontSize: 10, color: Colors.grey.shade400, letterSpacing: 1),
                  ),
                  Text(
                    "${service.dailyGoal.toInt()} ml",
                    style: GoogleFonts.lato(fontSize: 14, color: Colors.black87, fontWeight: FontWeight.bold),
                  ),
                ],
              ),
            ],
          ),
        ],
      ),
    );
  }

  Widget _buildFloatingDock(BuildContext context, HydrationService service) {
    return Container(
      height: 85,
      margin: const EdgeInsets.symmetric(horizontal: 24),
      decoration: BoxDecoration(
        color: Colors.white.withOpacity(0.4),
        borderRadius: BorderRadius.circular(24),
        border: Border.all(color: Colors.white.withOpacity(0.4)),
        boxShadow: [
          BoxShadow(
            color: service.dynamicWaterColor.withOpacity(0.08),
            blurRadius: 20,
            offset: const Offset(0, 10),
          ),
        ],
      ),
      child: ClipRRect(
        borderRadius: BorderRadius.circular(24),
        child: BackdropFilter(
          filter: ImageFilter.blur(sigmaX: 10, sigmaY: 10),
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceEvenly,
            children: DrinkType.values.map((type) {
              final isWater = type == DrinkType.Water;
              return GestureDetector(
                onTap: () {
                  context.read<HydrationService>().addWater(250, type: type);
                  HapticFeedback.lightImpact();
                  ScaffoldMessenger.of(context).showSnackBar(
                      SnackBar(
                        content: Text("Recorded ${type.label}"),
                        backgroundColor: context.read<HydrationService>().dynamicWaterColor,
                        duration: const Duration(milliseconds: 800),
                        behavior: SnackBarBehavior.floating,
                        width: 200,
                        shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(20)),
                      )
                  );
                },
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Container(
                      padding: const EdgeInsets.all(12),
                      decoration: BoxDecoration(
                        color: isWater ? Colors.white.withOpacity(0.8) : Colors.transparent,
                        shape: BoxShape.circle,
                        boxShadow: isWater ? [
                          BoxShadow(color: Colors.black.withOpacity(0.05), blurRadius: 10, offset: const Offset(0, 4))
                        ] : null,
                      ),
                      child: Icon(
                        _getIconForType(type),
                        color: isWater ? const Color(0xFF00BFFF) : Colors.grey.shade500,
                        size: 22,
                      ),
                    ),
                    const SizedBox(height: 4),
                    Text(
                      type.label,
                      style: GoogleFonts.montserrat(
                          fontSize: 10,
                          fontWeight: isWater ? FontWeight.w600 : FontWeight.w400,
                          color: isWater ? Colors.black87 : Colors.grey.shade600
                      ),
                    ),
                  ],
                ),
              );
            }).toList(),
          ),
        ),
      ),
    );
  }

  IconData _getIconForType(DrinkType type) {
    switch(type) {
      case DrinkType.Water: return Icons.water_drop;
      case DrinkType.Coffee: return Icons.coffee;
      case DrinkType.Tea: return Icons.emoji_food_beverage;
      case DrinkType.Soda: return Icons.local_drink;
    }
  }
}