import 'package:flutter/material.dart';
import '../models/models.dart';
import '../theme.dart';

class ViewInputsScreen extends StatelessWidget {
  final UserProfile profile;
  final BehavioralInputs behaviors;

  const ViewInputsScreen({
    super.key,
    required this.profile,
    required this.behaviors,
  });

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Saved Inputs'),
        leading: IconButton(
          icon: const Icon(Icons.arrow_back),
          onPressed: () => Navigator.pop(context),
        ),
      ),
      body: SafeArea(
        child: SingleChildScrollView(
          padding: const EdgeInsets.all(24),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              // Profile Section
              _buildSectionHeader(context, 'Profile'),
              const SizedBox(height: 12),
              _buildInputRow(context, 'Age', '${profile.age} years'),
              _buildInputRow(context, 'Sex', _formatSex(profile.sex)),
              _buildInputRow(context, 'Country', profile.country),
              _buildInputRow(context, 'Height', _formatHeight(profile.heightCm)),
              _buildInputRow(context, 'Weight', _formatWeight(profile.weightKg)),
              _buildInputRow(context, 'BMI', profile.bmi.toStringAsFixed(1)),
              if (profile.diagnoses.isNotEmpty)
                _buildInputRow(
                  context,
                  'Conditions',
                  profile.diagnoses.map(_formatDiagnosis).join(', '),
                ),
              const SizedBox(height: 24),

              // Habits Section
              _buildSectionHeader(context, 'Habits'),
              const SizedBox(height: 12),
              _buildInputRow(
                context,
                'Smoking',
                _formatSmoking(behaviors.smoking, behaviors.cigarettesPerDay),
              ),
              _buildInputRow(
                context,
                'Alcohol',
                _formatAlcohol(behaviors.alcohol),
              ),
              _buildInputRow(
                context,
                'Sleep',
                _formatSleep(behaviors.sleepHours, behaviors.sleepConsistent),
              ),
              _buildInputRow(
                context,
                'Physical Activity',
                _formatActivity(behaviors.activity),
              ),
              const SizedBox(height: 24),

              // Lifestyle Section
              _buildSectionHeader(context, 'Lifestyle'),
              const SizedBox(height: 12),
              _buildInputRow(
                context,
                'Diet Quality',
                _formatDiet(behaviors.diet),
              ),
              _buildInputRow(
                context,
                'Processed Food',
                _formatProcessedFood(behaviors.processedFood),
              ),
              _buildInputRow(
                context,
                'Drug Use',
                _formatDrugUse(behaviors.drugUse),
              ),
              _buildInputRow(
                context,
                'Social Connection',
                _formatSocial(behaviors.social),
              ),
              _buildInputRow(
                context,
                'Stress Level',
                _formatStress(behaviors.stress),
              ),
              _buildInputRow(
                context,
                'Driving',
                _formatDriving(behaviors.driving),
              ),
              _buildInputRow(
                context,
                'Work Hours',
                _formatWorkHours(behaviors.workHours),
              ),
              const SizedBox(height: 32),
            ],
          ),
        ),
      ),
    );
  }

  Widget _buildSectionHeader(BuildContext context, String title) {
    return Text(
      title,
      style: Theme.of(context).textTheme.headlineSmall?.copyWith(
            fontWeight: FontWeight.w600,
          ),
    );
  }

  Widget _buildInputRow(BuildContext context, String label, String value) {
    return Padding(
      padding: const EdgeInsets.only(bottom: 12),
      child: Container(
        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 14),
        decoration: BoxDecoration(
          color: AppColors.surfaceVariant,
          borderRadius: BorderRadius.circular(12),
        ),
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: [
            Text(
              label,
              style: Theme.of(context).textTheme.bodyLarge?.copyWith(
                    color: AppColors.textSecondary,
                  ),
            ),
            Flexible(
              child: Text(
                value,
                style: Theme.of(context).textTheme.bodyLarge?.copyWith(
                      fontWeight: FontWeight.w500,
                    ),
                textAlign: TextAlign.right,
              ),
            ),
          ],
        ),
      ),
    );
  }

  String _formatSex(Sex sex) {
    switch (sex) {
      case Sex.male:
        return 'Male';
      case Sex.female:
        return 'Female';
    }
  }

  String _formatHeight(double cm) {
    final feet = (cm / 30.48).floor();
    final inches = ((cm / 2.54) % 12).round();
    return "$feet'$inches\" (${cm.round()} cm)";
  }

  String _formatWeight(double kg) {
    final lbs = (kg * 2.20462).round();
    return '$lbs lbs (${kg.round()} kg)';
  }

  String _formatDiagnosis(Diagnosis d) {
    switch (d) {
      case Diagnosis.cardiovascular:
        return 'Cardiovascular';
      case Diagnosis.diabetes:
        return 'Diabetes';
      case Diagnosis.cancer:
        return 'Cancer';
      case Diagnosis.copd:
        return 'COPD';
      case Diagnosis.hypertension:
        return 'Hypertension';
    }
  }

  String _formatSmoking(SmokingStatus status, int cigarettesPerDay) {
    switch (status) {
      case SmokingStatus.never:
        return 'Never smoked';
      case SmokingStatus.former:
        return 'Former smoker';
      case SmokingStatus.current:
        return 'Current ($cigarettesPerDay/day)';
    }
  }

  String _formatAlcohol(AlcoholLevel level) {
    switch (level) {
      case AlcoholLevel.none:
        return 'None';
      case AlcoholLevel.light:
        return 'Light (1-7/week)';
      case AlcoholLevel.moderate:
        return 'Moderate (8-14/week)';
      case AlcoholLevel.heavy:
        return 'Heavy (15-21/week)';
      case AlcoholLevel.veryHeavy:
        return 'Very Heavy (21+/week)';
    }
  }

  String _formatSleep(double hours, bool consistent) {
    final hoursStr = hours == hours.roundToDouble()
        ? hours.toInt().toString()
        : hours.toString();
    final consistentStr = consistent ? ', consistent' : ', inconsistent';
    return '$hoursStr hours$consistentStr';
  }

  String _formatActivity(ActivityLevel level) {
    switch (level) {
      case ActivityLevel.sedentary:
        return 'Sedentary';
      case ActivityLevel.light:
        return 'Light';
      case ActivityLevel.moderate:
        return 'Moderate';
      case ActivityLevel.high:
        return 'High';
    }
  }

  String _formatDiet(DietQuality diet) {
    switch (diet) {
      case DietQuality.poor:
        return 'Poor';
      case DietQuality.fair:
        return 'Fair';
      case DietQuality.good:
        return 'Good';
      case DietQuality.excellent:
        return 'Excellent';
    }
  }

  String _formatProcessedFood(ProcessedFoodLevel level) {
    switch (level) {
      case ProcessedFoodLevel.daily:
        return 'Daily';
      case ProcessedFoodLevel.frequent:
        return 'Frequent';
      case ProcessedFoodLevel.occasional:
        return 'Occasional';
      case ProcessedFoodLevel.rarely:
        return 'Rarely';
    }
  }

  String _formatDrugUse(DrugUse use) {
    switch (use) {
      case DrugUse.none:
        return 'None';
      case DrugUse.occasional:
        return 'Occasional';
      case DrugUse.regular:
        return 'Regular';
      case DrugUse.daily:
        return 'Daily';
    }
  }

  String _formatSocial(SocialConnection level) {
    switch (level) {
      case SocialConnection.isolated:
        return 'Isolated';
      case SocialConnection.limited:
        return 'Limited';
      case SocialConnection.moderate:
        return 'Moderate';
      case SocialConnection.strong:
        return 'Strong';
    }
  }

  String _formatStress(StressLevel level) {
    switch (level) {
      case StressLevel.low:
        return 'Low';
      case StressLevel.moderate:
        return 'Moderate';
      case StressLevel.high:
        return 'High';
      case StressLevel.chronic:
        return 'Chronic';
    }
  }

  String _formatDriving(DrivingExposure level) {
    switch (level) {
      case DrivingExposure.low:
        return 'Low (<50 mi/week)';
      case DrivingExposure.moderate:
        return 'Moderate (50-150 mi/week)';
      case DrivingExposure.high:
        return 'High (150-300 mi/week)';
      case DrivingExposure.veryHigh:
        return 'Very High (300+ mi/week)';
    }
  }

  String _formatWorkHours(WorkHoursLevel level) {
    switch (level) {
      case WorkHoursLevel.normal:
        return 'Normal (<40/week)';
      case WorkHoursLevel.elevated:
        return 'Elevated (40-55/week)';
      case WorkHoursLevel.high:
        return 'High (55-70/week)';
      case WorkHoursLevel.extreme:
        return 'Extreme (70+/week)';
    }
  }
}