import { useState } from 'react';
import { Link } from 'react-router-dom';
import { VariabilityAttributes, AttributeValue } from '../api/client';

interface VariabilityPanelProps {
  attributes: VariabilityAttributes;
}

export function VariabilityPanel({ attributes }: VariabilityPanelProps) {
  const [showModal, setShowModal] = useState<{
    type: string;
    title: string;
    items: string[];
    total: number;
  } | null>(null);

  const [loading, setLoading] = useState(false);

  // Fonction pour charger la liste des IPs associées
  const loadAssociatedIPs = async (attrType: string, value: string, total: number) => {
    setLoading(true);
    try {
      const response = await fetch(`/api/variability/${attrType}/${encodeURIComponent(value)}/ips?limit=100`);
      const data = await response.json();
      setShowModal({
        type: 'ips',
        title: `${data.total || total} IPs associées à ${value}`,
        items: data.ips || [],
        total: data.total || total,
      });
    } catch (error) {
      console.error('Erreur chargement IPs:', error);
    }
    setLoading(false);
  };

  return (
    <div className="space-y-6">
      <h2 className="text-xl font-semibold text-text-primary">Variabilité des Attributs</h2>

      {/* JA4 Fingerprints */}
      {attributes.ja4 && attributes.ja4.length > 0 && (
        <AttributeSection
          title="JA4 Fingerprints"
          items={attributes.ja4}
          getValue={(item) => item.value}
          getLink={(item) => `/investigation/ja4/${encodeURIComponent(item.value)}`}
          onViewAll={(value, count) => loadAssociatedIPs('ja4', value, count)}
          showViewAll
          viewAllLabel="Voir les IPs"
        />
      )}

      {/* User-Agents */}
      {attributes.user_agents && attributes.user_agents.length > 0 && (
        <div className="bg-background-secondary rounded-lg p-6">
          <h3 className="text-lg font-medium text-text-primary mb-4">
            User-Agents ({attributes.user_agents.length})
          </h3>
          <div className="space-y-3">
            {attributes.user_agents.slice(0, 10).map((item, index) => (
              <div key={index} className="space-y-1">
                <div className="flex items-center justify-between">
                  <div className="text-text-primary font-medium truncate max-w-lg text-sm">
                    {item.value}
                  </div>
                  <div className="text-right">
                    <div className="text-text-primary font-medium">{item.count}</div>
                    <div className="text-text-secondary text-xs">{item.percentage?.toFixed(1)}%</div>
                  </div>
                </div>
                <div className="w-full bg-background-card rounded-full h-2">
                  <div
                    className="h-2 rounded-full bg-threat-medium transition-all"
                    style={{ width: `${item.percentage}%` }}
                  />
                </div>
              </div>
            ))}
          </div>
          {attributes.user_agents.length > 10 && (
            <p className="text-text-secondary text-sm mt-4 text-center">
              ... et {attributes.user_agents.length - 10} autres (top 10 affiché)
            </p>
          )}
        </div>
      )}

      {/* Pays */}
      {attributes.countries && attributes.countries.length > 0 && (
        <AttributeSection
          title="Pays"
          items={attributes.countries}
          getValue={(item) => item.value}
          getLink={(item) => `/detections/country/${encodeURIComponent(item.value)}`}
          onViewAll={(value, count) => loadAssociatedIPs('country', value, count)}
          showViewAll
          viewAllLabel="Voir les IPs"
        />
      )}

      {/* ASN */}
      {attributes.asns && attributes.asns.length > 0 && (
        <AttributeSection
          title="ASN"
          items={attributes.asns}
          getValue={(item) => item.value}
          getLink={(item) => {
            const asnNumber = item.value.match(/AS(\d+)/)?.[1] || item.value;
            return `/detections/asn/${encodeURIComponent(asnNumber)}`;
          }}
          onViewAll={(value, count) => loadAssociatedIPs('asn', value, count)}
          showViewAll
          viewAllLabel="Voir les IPs"
        />
      )}

      {/* Hosts */}
      {attributes.hosts && attributes.hosts.length > 0 && (
        <AttributeSection
          title="Hosts"
          items={attributes.hosts}
          getValue={(item) => item.value}
          getLink={(item) => `/detections/host/${encodeURIComponent(item.value)}`}
          onViewAll={(value, count) => loadAssociatedIPs('host', value, count)}
          showViewAll
          viewAllLabel="Voir les IPs"
        />
      )}

      {/* Threat Levels */}
      {attributes.threat_levels && attributes.threat_levels.length > 0 && (
        <AttributeSection
          title="Niveaux de Menace"
          items={attributes.threat_levels}
          getValue={(item) => item.value}
          getLink={(item) => `/detections?threat_level=${encodeURIComponent(item.value)}`}
          onViewAll={(value, count) => loadAssociatedIPs('threat_level', value, count)}
          showViewAll
          viewAllLabel="Voir les IPs"
        />
      )}

      {/* Modal pour afficher la liste complète */}
      {showModal && (
        <div className="fixed inset-0 bg-black/50 flex items-center justify-center z-50 p-4">
          <div className="bg-background-secondary rounded-lg max-w-4xl w-full max-h-[80vh] overflow-hidden flex flex-col">
            {/* Header */}
            <div className="flex items-center justify-between p-6 border-b border-background-card">
              <h3 className="text-xl font-semibold text-text-primary">{showModal.title}</h3>
              <button
                onClick={() => setShowModal(null)}
                className="text-text-secondary hover:text-text-primary transition-colors text-xl"
              >
                ×
              </button>
            </div>

            {/* Content */}
            <div className="flex-1 overflow-y-auto p-6">
              {loading ? (
                <div className="text-center text-text-secondary py-8">Chargement...</div>
              ) : showModal.items.length > 0 ? (
                <div className="space-y-2">
                  {showModal.items.map((item, index) => (
                    <div
                      key={index}
                      className="bg-background-card rounded-lg p-3 font-mono text-sm text-text-primary break-all"
                    >
                      {item}
                    </div>
                  ))}
                  {showModal.total > showModal.items.length && (
                    <p className="text-center text-text-secondary text-sm mt-4">
                      Affichage de {showModal.items.length} sur {showModal.total} éléments
                    </p>
                  )}
                </div>
              ) : (
                <div className="text-center text-text-secondary py-8">
                  Aucune donnée disponible
                </div>
              )}
            </div>

            {/* Footer */}
            <div className="p-4 border-t border-background-card text-right">
              <button
                onClick={() => setShowModal(null)}
                className="bg-accent-primary hover:bg-accent-primary/80 text-white px-6 py-2 rounded-lg transition-colors"
              >
                Fermer
              </button>
            </div>
          </div>
        </div>
      )}
    </div>
  );
}

// Composant AttributeSection
function AttributeSection({
  title,
  items,
  getValue,
  getLink,
  onViewAll,
  showViewAll = false,
  viewAllLabel = 'Voir les IPs',
}: {
  title: string;
  items: AttributeValue[];
  getValue: (item: AttributeValue) => string;
  getLink: (item: AttributeValue) => string;
  onViewAll?: (value: string, count: number) => void;
  showViewAll?: boolean;
  viewAllLabel?: string;
}) {
  const displayItems = items.slice(0, 10);

  return (
    <div className="bg-background-secondary rounded-lg p-6">
      <div className="flex items-center justify-between mb-4">
        <h3 className="text-lg font-medium text-text-primary">
          {title} ({items.length})
        </h3>
        {showViewAll && items.length > 0 && (
          <select
            onChange={(e) => {
              if (e.target.value && onViewAll) {
                const item = items.find(i => i.value === e.target.value);
                if (item) {
                  onViewAll(item.value, item.count);
                }
              }
            }}
            defaultValue=""
            className="bg-background-card border border-background-card rounded-lg px-3 py-1 text-sm text-text-primary focus:outline-none focus:border-accent-primary"
          >
            <option value="">{viewAllLabel}...</option>
            {displayItems.map((item, idx) => (
              <option key={idx} value={item.value}>
                {getValue(item).substring(0, 40)}{getValue(item).length > 40 ? '...' : ''}
              </option>
            ))}
          </select>
        )}
      </div>
      <div className="space-y-3">
        {displayItems.map((item, index) => (
          <AttributeRow
            key={index}
            value={item}
            getValue={getValue}
            getLink={getLink}
          />
        ))}
      </div>

      {items.length > 10 && (
        <p className="text-text-secondary text-sm mt-4 text-center">
          ... et {items.length - 10} autres (top 10 affiché)
        </p>
      )}
    </div>
  );
}

// Composant AttributeRow
function AttributeRow({
  value,
  getValue,
  getLink,
}: {
  value: AttributeValue;
  getValue: (item: AttributeValue) => string;
  getLink: (item: AttributeValue) => string;
}) {
  const percentage = value.percentage || 0;

  return (
    <div className="space-y-1">
      <div className="flex items-center justify-between">
        <Link
          to={getLink(value)}
          className="text-text-primary hover:text-accent-primary transition-colors font-medium truncate max-w-md"
        >
          {getValue(value)}
        </Link>
        <div className="text-right">
          <div className="text-text-primary font-medium">{value.count}</div>
          <div className="text-text-secondary text-xs">{percentage.toFixed(1)}%</div>
        </div>
      </div>

      <div className="w-full bg-background-card rounded-full h-2">
        <div
          className={`h-2 rounded-full transition-all ${getPercentageColor(percentage)}`}
          style={{ width: `${percentage}%` }}
        />
      </div>
    </div>
  );
}

// Helper pour la couleur de la barre
function getPercentageColor(percentage: number): string {
  if (percentage >= 50) return 'bg-threat-critical';
  if (percentage >= 25) return 'bg-threat-high';
  if (percentage >= 10) return 'bg-threat-medium';
  return 'bg-threat-low';
}