import React, { useState } from 'react';
import { ChevronDown, ChevronUp, ShieldAlert, Sparkles, HelpCircle, Lightbulb } from 'lucide-react';

export default function AnalysisPanel({ report, metrics }) {
  const [openSection, setOpenSection] = useState('creatures');

  const getStatusColor = (status) => {
    switch (status?.toLowerCase()) {
      case 'auspicious':
      case 'high vitality':
      case 'safe':
        return '#50c878'; // Jade Green
      case 'balanced':
      case 'neutral':
      case 'moderate':
        return '#d4af37'; // Gold
      case 'inauspicious':
      case 'stagnant':
      case 'hazardous':
      default:
        return '#e53e3e'; // Rose Red
    }
  };

  const toggleSection = (section) => {
    setOpenSection(openSection === section ? null : section);
  };

  const sections = [
    {
      id: 'creatures',
      title: '⛰️ Four Celestial Creatures',
      subtitle: 'Terrain configurations, protection, and viewsheds',
      data: report.creatures,
      metricsContent: [
        { label: 'Aspect (Facing Direction)', value: `${metrics.aspect_deg}°` },
        { label: 'Slope Gradient', value: `${metrics.slope_deg}°` },
        { label: 'Backing Ridge Height', value: metrics.relative_backing_elevation_m > 0 ? `+${metrics.relative_backing_elevation_m}m` : 'None' },
        { label: 'Front Openness (Bright Hall)', value: `${metrics.front_openness_deg}°` }
      ]
    },
    {
      id: 'vitality',
      title: '🌱 Qi Flow & Microclimate',
      subtitle: 'Photosynthetic vitality and thermal balance',
      data: report.vitality,
      metricsContent: [
        { label: 'Vegetation Index (NDVI)', value: metrics.ndvi },
        { label: 'Thermal Deviation (LST)', value: `${metrics.lst_deviation_c > 0 ? '+' : ''}${metrics.lst_deviation_c}°C` }
      ]
    },
    {
      id: 'water',
      title: '💧 Water Feng Shui',
      subtitle: 'Sinuosity, hydrology, and curvature safety',
      data: report.water,
      metricsContent: [
        { label: 'Water Distance', value: metrics.water_distance_m < 9000 ? `${metrics.water_distance_m}m` : 'None nearby' },
        { label: 'Hydrologic Bend Type', value: metrics.water_curve_type === 'concave_embrace' ? 'Embracing (Concave)' : (metrics.water_curve_type === 'convex_bow' ? 'Bow (Convex)' : 'None/Linear') }
      ]
    },
    {
      id: 'sha_qi',
      title: '⚡ Sha Qi & Urban Hazards',
      subtitle: 'Road clashing, corner knives, and electromagnetic fields',
      data: report.sha_qi,
      metricsContent: [
        { label: 'T-Junction Road Clashes', value: metrics.sha_qi_t_junctions },
        { label: 'Adjacent Corner Knives', value: metrics.sha_qi_building_corners },
        { label: 'EMF Proximity Distance', value: `${metrics.emf_distance_m}m` }
      ]
    }
  ];

  return (
    <div style={{ display: 'flex', flexDirection: 'column', gap: '12px', width: '100%' }}>
      {sections.map((sec) => {
        const isOpen = openSection === sec.id;
        const statusColor = getStatusColor(sec.data.status);

        return (
          <div key={sec.id} className="glass-panel" style={{
            overflow: 'hidden',
            borderLeft: `4px solid ${statusColor}`
          }}>
            {/* Header Accordion Bar */}
            <div 
              onClick={() => toggleSection(sec.id)}
              style={{
                padding: '16px',
                cursor: 'pointer',
                display: 'flex',
                justifyContent: 'space-between',
                alignItems: 'center',
                userSelect: 'none',
                background: isOpen ? 'rgba(255,255,255,0.02)' : 'transparent',
                transition: 'background 0.2s ease'
              }}
            >
              <div>
                <h3 style={{ fontSize: '16px', display: 'flex', alignItems: 'center', gap: '8px' }}>
                  {sec.title}
                  <span style={{
                    fontSize: '10px',
                    fontWeight: 'bold',
                    textTransform: 'uppercase',
                    color: '#fff',
                    backgroundColor: statusColor,
                    padding: '2px 8px',
                    borderRadius: '10px',
                    letterSpacing: '0.05em'
                  }}>
                    {sec.data.status}
                  </span>
                </h3>
                <p style={{ fontSize: '12px', color: 'var(--text-secondary)', marginTop: '2px' }}>
                  {sec.subtitle}
                </p>
              </div>
              <div>
                {isOpen ? <ChevronUp size={18} color="var(--text-secondary)" /> : <ChevronDown size={18} color="var(--text-secondary)" />}
              </div>
            </div>

            {/* Content Body */}
            {isOpen && (
              <div style={{
                padding: '16px',
                borderTop: '1px solid var(--border-glass)',
                display: 'flex',
                flexDirection: 'column',
                gap: '16px',
                background: 'rgba(0,0,0,0.1)'
              }}>
                {/* Micro Metrics Grid */}
                <div style={{
                  display: 'grid',
                  gridTemplateColumns: 'repeat(2, 1fr)',
                  gap: '10px',
                  background: 'rgba(255,255,255,0.01)',
                  padding: '10px',
                  borderRadius: '6px',
                  border: '1px solid rgba(255,255,255,0.02)'
                }}>
                  {sec.metricsContent.map((metric, idx) => (
                    <div key={idx} style={{ display: 'flex', flexDirection: 'column' }}>
                      <span style={{ fontSize: '10px', color: 'var(--text-muted)', textTransform: 'uppercase' }}>
                        {metric.label}
                      </span>
                      <span style={{ fontSize: '13px', fontWeight: '600', color: 'var(--text-primary)', marginTop: '2px' }}>
                        {metric.value}
                      </span>
                    </div>
                  ))}
                </div>

                {/* Explanations Accordion Cards */}
                <div style={{ display: 'flex', flexDirection: 'column', gap: '12px' }}>
                  {/* Feng Shui explanation */}
                  <div style={{
                    padding: '12px',
                    borderRadius: '8px',
                    background: 'linear-gradient(135deg, rgba(34,139,34,0.04) 0%, rgba(0,0,0,0) 100%)',
                    border: '1px solid rgba(80,200,120,0.08)'
                  }}>
                    <h4 style={{
                      fontSize: '13px',
                      color: 'var(--color-jade-light)',
                      display: 'flex',
                      alignItems: 'center',
                      gap: '6px',
                      marginBottom: '6px'
                    }}>
                      <Sparkles size={14} /> Traditional Feng Shui
                    </h4>
                    <p style={{ fontSize: '12.5px', lineHeight: '1.5', color: '#e2e8f0', fontStyle: 'italic' }}>
                      "{sec.data.feng_shui_exp}"
                    </p>
                  </div>

                  {/* Scientific explanation */}
                  <div style={{
                    padding: '12px',
                    borderRadius: '8px',
                    background: 'linear-gradient(135deg, rgba(212,175,55,0.04) 0%, rgba(0,0,0,0) 100%)',
                    border: '1px solid rgba(212,175,55,0.1)'
                  }}>
                    <h4 style={{
                      fontSize: '13px',
                      color: 'var(--color-gold)',
                      display: 'flex',
                      alignItems: 'center',
                      gap: '6px',
                      marginBottom: '6px'
                    }}>
                      <HelpCircle size={14} /> Environmental Science
                    </h4>
                    <p style={{ fontSize: '12.5px', lineHeight: '1.5', color: '#cbd5e0' }}>
                      {sec.data.scientific_exp}
                    </p>
                  </div>
                </div>

                {/* Remedies Section */}
                {sec.data.remedies && sec.data.remedies.length > 0 && (
                  <div style={{ marginTop: '4px' }}>
                    <h4 style={{
                      fontSize: '13px',
                      color: 'var(--text-primary)',
                      display: 'flex',
                      alignItems: 'center',
                      gap: '6px',
                      marginBottom: '10px',
                      fontWeight: 'bold',
                      fontFamily: 'var(--font-sans)',
                      textTransform: 'uppercase',
                      letterSpacing: '0.05em'
                    }}>
                      <Lightbulb size={14} color="var(--color-gold)" /> Actionable Remedies & Mitigations
                    </h4>
                    <div style={{ display: 'flex', flexDirection: 'column', gap: '10px' }}>
                      {sec.data.remedies.map((rem, idx) => (
                        <div key={idx} style={{
                          background: 'rgba(255, 255, 255, 0.02)',
                          border: '1px solid var(--border-glass)',
                          borderRadius: '8px',
                          overflow: 'hidden'
                        }}>
                          <div style={{
                            padding: '8px 12px',
                            background: 'rgba(255,255,255,0.03)',
                            fontSize: '12px',
                            fontWeight: '600',
                            borderBottom: '1px solid var(--border-glass)',
                            color: 'var(--color-gold)'
                          }}>
                            {rem.title}
                          </div>
                          <div style={{
                            display: 'grid',
                            gridTemplateColumns: '1fr 1fr',
                            fontSize: '11.5px',
                            lineHeight: '1.4'
                          }}>
                            <div style={{
                              padding: '10px',
                              borderRight: '1px solid var(--border-glass)',
                              background: 'rgba(34,139,34,0.01)'
                            }}>
                              <div style={{ color: 'var(--color-jade-light)', fontWeight: 'bold', marginBottom: '2px' }}>Feng Shui Master</div>
                              <div style={{ color: '#e2e8f0' }}>{rem.feng_shui}</div>
                            </div>
                            <div style={{
                              padding: '10px',
                              background: 'rgba(212,175,55,0.01)'
                            }}>
                              <div style={{ color: 'var(--color-gold)', fontWeight: 'bold', marginBottom: '2px' }}>GIS Engineer</div>
                              <div style={{ color: '#cbd5e0' }}>{rem.scientific}</div>
                            </div>
                          </div>
                        </div>
                      ))}
                    </div>
                  </div>
                )}
              </div>
            )}
          </div>
        );
      })}
    </div>
  );
}