import 'package:eatvio_app/features/diary/models/diary_day_model.dart';
import 'package:flutter/material.dart';

class MealSummaryWidget extends StatelessWidget {
  final List<PortionModel> portions;
  final int mealNumber;

  const MealSummaryWidget({super.key, required this.portions, required this.mealNumber});

  @override
  Widget build(BuildContext context) {
    final totals = _calculateTotals();

    if (totals['calories'] == 0 && totals['proteins'] == 0 && totals['fats'] == 0 && totals['carbohydrates'] == 0) {
      return const SizedBox.shrink();
    }

    return Container(
      margin: const EdgeInsets.only(top: 8),
      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
      decoration: BoxDecoration(
        color: Colors.white,
        borderRadius: BorderRadius.circular(16),
        border: Border.all(color: const Color(0xFF2F80ED), width: 2),
      ),
      child: Row(
        mainAxisAlignment: MainAxisAlignment.spaceBetween,
        children: [
          Text(
            'Прием $mealNumber',
            style: const TextStyle(color: Color(0xFF323F4B), fontSize: 16, fontWeight: FontWeight.w600),
          ),
          Row(
            children: [
              _buildNutritionChip('К', totals['calories']!.round()),
              const SizedBox(width: 4),
              _buildNutritionChip('Б', totals['proteins']!.round()),
              const SizedBox(width: 4),
              _buildNutritionChip('Ж', totals['fats']!.round()),
              const SizedBox(width: 4),
              _buildNutritionChip('У', totals['carbohydrates']!.round()),
            ],
          ),
        ],
      ),
    );
  }

  Widget _buildNutritionChip(String label, int value) {
    return Container(
      padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
      decoration: BoxDecoration(color: const Color(0xFFF6FAFF), borderRadius: BorderRadius.circular(12)),
      child: RichText(
        text: TextSpan(
          children: [
            TextSpan(
              text: '$label ',
              style: const TextStyle(color: Color(0xFF2F80ED), fontSize: 12, fontWeight: FontWeight.w600),
            ),
            TextSpan(
              text: '$value',
              style: const TextStyle(color: Color(0xFF6D6F71), fontSize: 12, fontWeight: FontWeight.w600),
            ),
          ],
        ),
      ),
    );
  }

  Map<String, double> _calculateTotals() {
    return calculateMealTotals(portions);
  }

  static Map<String, double> calculateMealTotals(List<PortionModel> portions) {
    double totalCalories = 0;
    double totalProteins = 0;
    double totalFats = 0;
    double totalCarbohydrates = 0;

    for (final portion in portions) {
      if (portion.portionState == PortionState.eatenDeleted) {
        continue;
      }

      // Для продуктов из диеты учитываем только съеденные (с галочкой)
      if (portion.fromDiet && portion.portionState != PortionState.eatenFromDiet) {
        continue;
      }

      final caloriesInfo = portion.productCaloriesInfo;
      if (caloriesInfo == null) {
        continue;
      }

      double calories, proteins, fats, carbohydrates;

      if (portion.portion == 'gr') {
        calories = (caloriesInfo.calories * portion.quantity) / 100;
        proteins = (caloriesInfo.proteins * portion.quantity) / 100;
        fats = (caloriesInfo.fats * portion.quantity) / 100;
        carbohydrates = (caloriesInfo.carbohydrates * portion.quantity) / 100;
      } else {
        calories = caloriesInfo.energyOnPortion;
        proteins = caloriesInfo.proteinsOnPortion;
        fats = caloriesInfo.fatsOnPortion;
        carbohydrates = caloriesInfo.carbohydratesOnPortion;
      }

      totalCalories += calories;
      totalProteins += proteins;
      totalFats += fats;
      totalCarbohydrates += carbohydrates;
    }

    return {'calories': totalCalories, 'proteins': totalProteins, 'fats': totalFats, 'carbohydrates': totalCarbohydrates};
  }
}