import React, { useState } from 'react';
import { useTranslation } from 'react-i18next';
import { Sparkles, PenTool, ArrowRight } from 'lucide-react';
import Button from '../../../ui/Button/Button';
import Card from '../../../ui/Card/Card';

export interface DataSourceChoiceStepProps {
  onUpdate?: (data: { dataSource: 'ai-assisted' | 'manual' }) => void;
  onComplete?: () => void;
  initialData?: {
    dataSource?: 'ai-assisted' | 'manual';
  };
}

interface DataSourceOption {
  id: 'ai-assisted' | 'manual';
  icon: React.ReactNode;
  title: string;
  description: string;
  benefits: string[];
  idealFor: string[];
  estimatedTime: string;
  color: string;
  gradient: string;
  badge?: string;
  badgeColor?: string;
}

export const DataSourceChoiceStep: React.FC<DataSourceChoiceStepProps> = ({
  onUpdate,
  onComplete,
  initialData,
}) => {
  const { t } = useTranslation();
  const [selectedSource, setSelectedSource] = useState<'ai-assisted' | 'manual' | null>(
    initialData?.dataSource || null
  );
  const [hoveredSource, setHoveredSource] = useState<string | null>(null);

  const dataSourceOptions: DataSourceOption[] = [
    {
      id: 'ai-assisted',
      icon: <Sparkles className="w-12 h-12" />,
      title: t('onboarding:data_source.ai_assisted.title', 'Configuración Inteligente con IA'),
      description: t(
        'onboarding:data_source.ai_assisted.description',
        'Sube tus datos de ventas históricos y nuestra IA te ayudará a configurar automáticamente tu inventario'
      ),
      benefits: [
        t('onboarding:data_source.ai_assisted.benefit1', '⚡ Configuración automática de productos'),
        t('onboarding:data_source.ai_assisted.benefit2', '🎯 Clasificación inteligente por categorías'),
        t('onboarding:data_source.ai_assisted.benefit3', '💰 Análisis de costos y precios históricos'),
        t('onboarding:data_source.ai_assisted.benefit4', '📊 Recomendaciones basadas en patrones de venta'),
      ],
      idealFor: [
        t('onboarding:data_source.ai_assisted.ideal1', 'Panaderías con historial de ventas'),
        t('onboarding:data_source.ai_assisted.ideal2', 'Migración desde otro sistema'),
        t('onboarding:data_source.ai_assisted.ideal3', 'Necesitas configurar rápido'),
      ],
      estimatedTime: t('onboarding:data_source.ai_assisted.time', '5-10 minutos'),
      color: 'text-purple-600',
      gradient: 'bg-gradient-to-br from-purple-50 to-pink-50',
      badge: t('onboarding:data_source.ai_assisted.badge', 'Recomendado'),
      badgeColor: 'bg-purple-100 text-purple-700',
    },
    {
      id: 'manual',
      icon: <PenTool className="w-12 h-12" />,
      title: t('onboarding:data_source.manual.title', 'Configuración Manual Paso a Paso'),
      description: t(
        'onboarding:data_source.manual.description',
        'Configura tu panadería desde cero ingresando cada detalle manualmente'
      ),
      benefits: [
        t('onboarding:data_source.manual.benefit1', '🎯 Control total sobre cada detalle'),
        t('onboarding:data_source.manual.benefit2', '📝 Perfecto para comenzar desde cero'),
        t('onboarding:data_source.manual.benefit3', '🧩 Personalización completa'),
        t('onboarding:data_source.manual.benefit4', '✨ Sin necesidad de datos históricos'),
      ],
      idealFor: [
        t('onboarding:data_source.manual.ideal1', 'Panaderías nuevas sin historial'),
        t('onboarding:data_source.manual.ideal2', 'Prefieres control manual total'),
        t('onboarding:data_source.manual.ideal3', 'Configuración muy específica'),
      ],
      estimatedTime: t('onboarding:data_source.manual.time', '15-20 minutos'),
      color: 'text-blue-600',
      gradient: 'bg-gradient-to-br from-blue-50 to-cyan-50',
    },
  ];

  const handleSelectSource = (sourceId: 'ai-assisted' | 'manual') => {
    setSelectedSource(sourceId);
    onUpdate?.({ dataSource: sourceId });
  };

  const handleContinue = () => {
    if (selectedSource) {
      onComplete?.();
    }
  };

  return (
    <div className="max-w-5xl mx-auto p-6 space-y-8">
      {/* Header */}
      <div className="text-center space-y-3">
        <h1 className="text-3xl font-bold text-text-primary">
          {t('onboarding:data_source.title', '¿Cómo prefieres configurar tu panadería?')}
        </h1>
        <p className="text-lg text-text-secondary max-w-2xl mx-auto">
          {t(
            'onboarding:data_source.subtitle',
            'Elige el método que mejor se adapte a tu situación actual'
          )}
        </p>
      </div>

      {/* Data Source Options */}
      <div className="grid grid-cols-1 md:grid-cols-2 gap-6">
        {dataSourceOptions.map((option) => {
          const isSelected = selectedSource === option.id;
          const isHovered = hoveredSource === option.id;

          return (
            <Card
              key={option.id}
              className={`
                relative cursor-pointer transition-all duration-300 overflow-hidden
                ${isSelected ? 'ring-4 ring-primary-500 shadow-2xl scale-105' : 'hover:shadow-xl hover:scale-102'}
                ${isHovered && !isSelected ? 'shadow-lg' : ''}
              `}
              onClick={() => handleSelectSource(option.id)}
              onMouseEnter={() => setHoveredSource(option.id)}
              onMouseLeave={() => setHoveredSource(null)}
            >
              {/* Badge */}
              {option.badge && (
                <div className="absolute top-4 right-4 z-10">
                  <span className={`text-xs px-3 py-1 rounded-full font-semibold ${option.badgeColor}`}>
                    {option.badge}
                  </span>
                </div>
              )}

              {/* Selection Indicator */}
              {isSelected && (
                <div className="absolute top-4 left-4 z-10">
                  <div className="w-6 h-6 bg-primary-500 rounded-full flex items-center justify-center shadow-lg animate-scale-in">
                    <span className="text-white text-sm">✓</span>
                  </div>
                </div>
              )}

              {/* Gradient Background */}
              <div className={`absolute inset-0 ${option.gradient} opacity-40 transition-opacity ${isSelected ? 'opacity-60' : ''}`} />

              {/* Content */}
              <div className="relative p-6 space-y-4">
                {/* Icon & Title */}
                <div className="space-y-3">
                  <div className={option.color}>
                    {option.icon}
                  </div>
                  <h3 className="text-xl font-bold text-text-primary">
                    {option.title}
                  </h3>
                  <p className="text-sm text-text-secondary leading-relaxed">
                    {option.description}
                  </p>
                </div>

                {/* Benefits */}
                <div className="space-y-2 pt-2">
                  <h4 className="text-xs font-semibold text-text-secondary uppercase tracking-wide">
                    {t('onboarding:data_source.benefits_label', 'Beneficios')}
                  </h4>
                  <ul className="space-y-1.5">
                    {option.benefits.map((benefit, index) => (
                      <li
                        key={index}
                        className="text-sm text-text-primary"
                      >
                        {benefit}
                      </li>
                    ))}
                  </ul>
                </div>

                {/* Ideal For */}
                <div className="space-y-2 pt-2 border-t border-border-primary">
                  <h4 className="text-xs font-semibold text-text-secondary uppercase tracking-wide">
                    {t('onboarding:data_source.ideal_for_label', 'Ideal para')}
                  </h4>
                  <ul className="space-y-1">
                    {option.idealFor.map((item, index) => (
                      <li
                        key={index}
                        className="text-xs text-text-secondary flex items-start gap-2"
                      >
                        <span className="text-primary-500 mt-0.5">•</span>
                        <span>{item}</span>
                      </li>
                    ))}
                  </ul>
                </div>

                {/* Estimated Time */}
                <div className="pt-2">
                  <div className="inline-flex items-center gap-2 px-3 py-1.5 bg-bg-secondary rounded-lg">
                    <span className="text-xs text-text-secondary">
                      ⏱️ {t('onboarding:data_source.estimated_time_label', 'Tiempo estimado')}:
                    </span>
                    <span className="text-xs font-semibold text-text-primary">
                      {option.estimatedTime}
                    </span>
                  </div>
                </div>
              </div>
            </Card>
          );
        })}
      </div>

      {/* Additional Info Based on Selection */}
      {selectedSource === 'ai-assisted' && (
        <div className="p-6 bg-purple-50 border border-purple-200 rounded-lg animate-fade-in">
          <div className="flex items-start gap-4">
            <div className="flex-shrink-0">
              <Sparkles className="w-8 h-8 text-purple-600" />
            </div>
            <div className="space-y-2">
              <h4 className="font-semibold text-text-primary">
                {t('onboarding:data_source.ai_info_title', '¿Qué necesitas para la configuración con IA?')}
              </h4>
              <ul className="space-y-1 text-sm text-text-secondary">
                <li className="flex items-start gap-2">
                  <span className="text-purple-600">•</span>
                  <span>
                    {t('onboarding:data_source.ai_info1', 'Archivo de ventas (CSV, Excel o JSON)')}
                  </span>
                </li>
                <li className="flex items-start gap-2">
                  <span className="text-purple-600">•</span>
                  <span>
                    {t('onboarding:data_source.ai_info2', 'Datos de al menos 1-3 meses (recomendado)')}
                  </span>
                </li>
                <li className="flex items-start gap-2">
                  <span className="text-purple-600">•</span>
                  <span>
                    {t('onboarding:data_source.ai_info3', 'Información de productos, precios y cantidades')}
                  </span>
                </li>
              </ul>
            </div>
          </div>
        </div>
      )}

      {selectedSource === 'manual' && (
        <div className="p-6 bg-blue-50 border border-blue-200 rounded-lg animate-fade-in">
          <div className="flex items-start gap-4">
            <div className="flex-shrink-0">
              <PenTool className="w-8 h-8 text-blue-600" />
            </div>
            <div className="space-y-2">
              <h4 className="font-semibold text-text-primary">
                {t('onboarding:data_source.manual_info_title', '¿Qué configuraremos paso a paso?')}
              </h4>
              <ul className="space-y-1 text-sm text-text-secondary">
                <li className="flex items-start gap-2">
                  <span className="text-blue-600">•</span>
                  <span>
                    {t('onboarding:data_source.manual_info1', 'Proveedores y sus datos de contacto')}
                  </span>
                </li>
                <li className="flex items-start gap-2">
                  <span className="text-blue-600">•</span>
                  <span>
                    {t('onboarding:data_source.manual_info2', 'Inventario de ingredientes y productos')}
                  </span>
                </li>
                <li className="flex items-start gap-2">
                  <span className="text-blue-600">•</span>
                  <span>
                    {t('onboarding:data_source.manual_info3', 'Recetas o procesos de producción')}
                  </span>
                </li>
                <li className="flex items-start gap-2">
                  <span className="text-blue-600">•</span>
                  <span>
                    {t('onboarding:data_source.manual_info4', 'Estándares de calidad y equipo (opcional)')}
                  </span>
                </li>
              </ul>
            </div>
          </div>
        </div>
      )}

      {/* Continue Button */}
      <div className="flex justify-center pt-4">
        <Button
          onClick={handleContinue}
          disabled={!selectedSource}
          size="lg"
          className="min-w-[200px] gap-2"
        >
          {t('onboarding:data_source.continue_button', 'Continuar')}
          <ArrowRight className="w-5 h-5" />
        </Button>
      </div>

      {/* Help Text */}
      <div className="text-center">
        <p className="text-sm text-text-secondary">
          {t(
            'onboarding:data_source.help_text',
            '💡 Puedes cambiar entre métodos en cualquier momento durante la configuración'
          )}
        </p>
      </div>
    </div>
  );
};

export default DataSourceChoiceStep;
