import React, { useState } from 'react';
import { useTranslation } from 'react-i18next';
import { useCreateIngredient } from '../../../api/hooks/inventory';
import type { Ingredient } from '../../../api/types/inventory';

interface QuickAddIngredientModalProps {
  isOpen: boolean;
  onClose: () => void;
  onCreated: (ingredient: Ingredient) => void;
  tenantId: string;
  context: 'recipe' | 'supplier' | 'standalone';
}

export const QuickAddIngredientModal: React.FC<QuickAddIngredientModalProps> = ({
  isOpen,
  onClose,
  onCreated,
  tenantId,
  context
}) => {
  const { t } = useTranslation();
  const createIngredient = useCreateIngredient();

  // Form state - minimal required fields
  const [formData, setFormData] = useState({
    name: '',
    category: '',
    unit_of_measure: 'kg',
    // Optional fields (collapsed by default)
    stock_quantity: 0,
    cost_per_unit: 0,
    estimated_shelf_life_days: 30,
    low_stock_threshold: 0,
    reorder_point: 0,
    requires_refrigeration: false,
    requires_freezing: false,
    is_seasonal: false,
    notes: '',
  });

  const [showOptionalFields, setShowOptionalFields] = useState(false);
  const [errors, setErrors] = useState<Record<string, string>>({});
  const [isSubmitting, setIsSubmitting] = useState(false);

  const categoryOptions = [
    'Baking Ingredients',
    'Dairy',
    'Fruits',
    'Vegetables',
    'Meat',
    'Seafood',
    'Spices',
    'Other'
  ];

  const unitOptions = ['kg', 'g', 'L', 'ml', 'units', 'dozen'];

  const validateForm = (): boolean => {
    const newErrors: Record<string, string> = {};

    if (!formData.name.trim()) {
      newErrors.name = 'El nombre es requerido';
    }
    if (!formData.category) {
      newErrors.category = 'La categoría es requerida';
    }
    if (!formData.unit_of_measure) {
      newErrors.unit_of_measure = 'La unidad es requerida';
    }

    // Validate optional fields if shown
    if (showOptionalFields) {
      if (formData.stock_quantity < 0) {
        newErrors.stock_quantity = 'El stock no puede ser negativo';
      }
      if (formData.cost_per_unit < 0) {
        newErrors.cost_per_unit = 'El costo no puede ser negativo';
      }
      if (formData.estimated_shelf_life_days <= 0) {
        newErrors.estimated_shelf_life_days = 'Los días de caducidad deben ser mayores a 0';
      }
    }

    setErrors(newErrors);
    return Object.keys(newErrors).length === 0;
  };

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();

    if (!validateForm()) return;

    setIsSubmitting(true);

    try {
      const ingredientData = {
        name: formData.name.trim(),
        product_type: 'ingredient',
        category: formData.category,
        unit_of_measure: formData.unit_of_measure,
        low_stock_threshold: showOptionalFields ? formData.low_stock_threshold : 1,
        max_stock_level: showOptionalFields ? formData.stock_quantity * 2 : 100,
        reorder_point: showOptionalFields ? formData.reorder_point : 2,
        shelf_life_days: showOptionalFields ? formData.estimated_shelf_life_days : 30,
        requires_refrigeration: formData.requires_refrigeration,
        requires_freezing: formData.requires_freezing,
        is_seasonal: formData.is_seasonal,
        average_cost: showOptionalFields ? formData.cost_per_unit : 0,
        notes: formData.notes || `Creado durante ${context === 'recipe' ? 'configuración de receta' : 'configuración de proveedor'}`,
        // Track that this was created inline
        metadata: {
          created_context: context,
          is_complete: showOptionalFields,
          needs_review: !showOptionalFields,
        }
      };

      const createdIngredient = await createIngredient.mutateAsync({
        tenantId,
        ingredientData
      });

      // Call parent with created ingredient
      onCreated(createdIngredient);

      // Reset and close
      resetForm();
      onClose();
    } catch (error) {
      console.error('Error creating ingredient:', error);
      setErrors({ submit: 'Error al crear el ingrediente. Inténtalo de nuevo.' });
    } finally {
      setIsSubmitting(false);
    }
  };

  const resetForm = () => {
    setFormData({
      name: '',
      category: '',
      unit_of_measure: 'kg',
      stock_quantity: 0,
      cost_per_unit: 0,
      estimated_shelf_life_days: 30,
      low_stock_threshold: 0,
      reorder_point: 0,
      requires_refrigeration: false,
      requires_freezing: false,
      is_seasonal: false,
      notes: '',
    });
    setShowOptionalFields(false);
    setErrors({});
  };

  const handleClose = () => {
    resetForm();
    onClose();
  };

  if (!isOpen) return null;

  const getContextMessage = () => {
    switch (context) {
      case 'recipe':
        return 'El ingrediente se agregará al inventario y estará disponible para usar en esta receta.';
      case 'supplier':
        return 'El ingrediente se agregará al inventario y podrás asociarlo con este proveedor.';
      default:
        return 'El ingrediente se agregará a tu inventario.';
    }
  };

  const getCtaText = () => {
    switch (context) {
      case 'recipe':
        return 'Agregar y Usar en Receta';
      case 'supplier':
        return 'Agregar y Asociar con Proveedor';
      default:
        return 'Agregar Ingrediente';
    }
  };

  return (
    <>
      {/* Backdrop */}
      <div
        className="fixed inset-0 bg-black/50 z-40 animate-fadeIn"
        onClick={handleClose}
      />

      {/* Modal */}
      <div className="fixed inset-0 z-50 flex items-center justify-center p-4 pointer-events-none">
        <div
          className="bg-[var(--bg-primary)] rounded-lg shadow-2xl max-w-2xl w-full max-h-[90vh] overflow-y-auto pointer-events-auto animate-slideUp"
          onClick={(e) => e.stopPropagation()}
        >
          {/* Header */}
          <div className="flex items-center justify-between p-6 border-b border-[var(--border-secondary)]">
            <div className="flex items-center gap-3">
              <div className="w-10 h-10 rounded-full bg-[var(--color-primary)]/10 flex items-center justify-center">
                <svg className="w-5 h-5 text-[var(--color-primary)]" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                  <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 4v16m8-8H4" />
                </svg>
              </div>
              <div>
                <h2 className="text-xl font-semibold text-[var(--text-primary)]">
                  ⚡ Agregar Ingrediente Rápido
                </h2>
                <p className="text-sm text-[var(--text-secondary)] mt-0.5">
                  {getContextMessage()}
                </p>
              </div>
            </div>
            <button
              onClick={handleClose}
              className="p-2 text-[var(--text-secondary)] hover:text-[var(--text-primary)] hover:bg-[var(--bg-secondary)] rounded-lg transition-colors"
            >
              <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M6 18L18 6M6 6l12 12" />
              </svg>
            </button>
          </div>

          {/* Form */}
          <form onSubmit={handleSubmit} className="p-6 space-y-5">
            {/* Required Fields */}
            <div className="space-y-4">
              <div>
                <label className="block text-sm font-medium text-[var(--text-primary)] mb-1.5">
                  Nombre del Ingrediente *
                </label>
                <input
                  type="text"
                  value={formData.name}
                  onChange={(e) => setFormData({ ...formData, name: e.target.value })}
                  className="w-full px-3 py-2.5 bg-[var(--bg-secondary)] border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] focus:border-transparent text-[var(--text-primary)] transition-all"
                  placeholder="Ej: Harina de trigo integral"
                  autoFocus
                />
                {errors.name && (
                  <p className="text-xs text-[var(--color-error)] mt-1.5 flex items-center gap-1">
                    <svg className="w-3 h-3" fill="currentColor" viewBox="0 0 20 20">
                      <path fillRule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7 4a1 1 0 11-2 0 1 1 0 012 0zm-1-9a1 1 0 00-1 1v4a1 1 0 102 0V6a1 1 0 00-1-1z" clipRule="evenodd" />
                    </svg>
                    {errors.name}
                  </p>
                )}
              </div>

              <div className="grid grid-cols-2 gap-4">
                <div>
                  <label className="block text-sm font-medium text-[var(--text-primary)] mb-1.5">
                    Categoría *
                  </label>
                  <select
                    value={formData.category}
                    onChange={(e) => setFormData({ ...formData, category: e.target.value })}
                    className="w-full px-3 py-2.5 bg-[var(--bg-secondary)] border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] focus:border-transparent text-[var(--text-primary)] transition-all"
                  >
                    <option value="">Seleccionar...</option>
                    {categoryOptions.map(cat => (
                      <option key={cat} value={cat}>{cat}</option>
                    ))}
                  </select>
                  {errors.category && (
                    <p className="text-xs text-[var(--color-error)] mt-1.5">{errors.category}</p>
                  )}
                </div>

                <div>
                  <label className="block text-sm font-medium text-[var(--text-primary)] mb-1.5">
                    Unidad de Medida *
                  </label>
                  <select
                    value={formData.unit_of_measure}
                    onChange={(e) => setFormData({ ...formData, unit_of_measure: e.target.value })}
                    className="w-full px-3 py-2.5 bg-[var(--bg-secondary)] border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] focus:border-transparent text-[var(--text-primary)] transition-all"
                  >
                    {unitOptions.map(unit => (
                      <option key={unit} value={unit}>{unit}</option>
                    ))}
                  </select>
                  {errors.unit_of_measure && (
                    <p className="text-xs text-[var(--color-error)] mt-1.5">{errors.unit_of_measure}</p>
                  )}
                </div>
              </div>
            </div>

            {/* Optional Fields Toggle */}
            <div className="border-t border-[var(--border-secondary)] pt-4">
              <button
                type="button"
                onClick={() => setShowOptionalFields(!showOptionalFields)}
                className="flex items-center justify-between w-full p-3 bg-[var(--bg-secondary)] hover:bg-[var(--bg-tertiary)] rounded-lg transition-colors group"
              >
                <div className="flex items-center gap-2">
                  <svg
                    className={`w-4 h-4 text-[var(--text-secondary)] transition-transform ${showOptionalFields ? 'rotate-90' : ''}`}
                    fill="none"
                    stroke="currentColor"
                    viewBox="0 0 24 24"
                  >
                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5l7 7-7 7" />
                  </svg>
                  <span className="text-sm font-medium text-[var(--text-primary)]">
                    Detalles Adicionales (Opcional)
                  </span>
                </div>
                <span className="text-xs text-[var(--text-tertiary)] group-hover:text-[var(--text-secondary)]">
                  {showOptionalFields ? 'Ocultar' : 'Mostrar'}
                </span>
              </button>

              {/* Optional Fields */}
              {showOptionalFields && (
                <div className="mt-4 space-y-4 animate-slideDown">
                  <div className="grid grid-cols-2 gap-4">
                    <div>
                      <label className="block text-sm font-medium text-[var(--text-primary)] mb-1.5">
                        Stock Inicial
                      </label>
                      <input
                        type="number"
                        min="0"
                        step="0.01"
                        value={formData.stock_quantity}
                        onChange={(e) => setFormData({ ...formData, stock_quantity: parseFloat(e.target.value) || 0 })}
                        className="w-full px-3 py-2.5 bg-[var(--bg-secondary)] border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] text-[var(--text-primary)]"
                      />
                      {errors.stock_quantity && (
                        <p className="text-xs text-[var(--color-error)] mt-1.5">{errors.stock_quantity}</p>
                      )}
                    </div>

                    <div>
                      <label className="block text-sm font-medium text-[var(--text-primary)] mb-1.5">
                        Costo por Unidad (€)
                      </label>
                      <input
                        type="number"
                        min="0"
                        step="0.01"
                        value={formData.cost_per_unit}
                        onChange={(e) => setFormData({ ...formData, cost_per_unit: parseFloat(e.target.value) || 0 })}
                        className="w-full px-3 py-2.5 bg-[var(--bg-secondary)] border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] text-[var(--text-primary)]"
                      />
                      {errors.cost_per_unit && (
                        <p className="text-xs text-[var(--color-error)] mt-1.5">{errors.cost_per_unit}</p>
                      )}
                    </div>

                    <div>
                      <label className="block text-sm font-medium text-[var(--text-primary)] mb-1.5">
                        Días de Caducidad
                      </label>
                      <input
                        type="number"
                        min="1"
                        value={formData.estimated_shelf_life_days}
                        onChange={(e) => setFormData({ ...formData, estimated_shelf_life_days: parseInt(e.target.value) || 30 })}
                        className="w-full px-3 py-2.5 bg-[var(--bg-secondary)] border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] text-[var(--text-primary)]"
                      />
                      {errors.estimated_shelf_life_days && (
                        <p className="text-xs text-[var(--color-error)] mt-1.5">{errors.estimated_shelf_life_days}</p>
                      )}
                    </div>

                    <div>
                      <label className="block text-sm font-medium text-[var(--text-primary)] mb-1.5">
                        Punto de Reorden
                      </label>
                      <input
                        type="number"
                        min="0"
                        value={formData.reorder_point}
                        onChange={(e) => setFormData({ ...formData, reorder_point: parseInt(e.target.value) || 0 })}
                        className="w-full px-3 py-2.5 bg-[var(--bg-secondary)] border border-[var(--border-secondary)] rounded-lg focus:outline-none focus:ring-2 focus:ring-[var(--color-primary)] text-[var(--text-primary)]"
                      />
                    </div>
                  </div>

                  <div className="flex items-center gap-4 flex-wrap">
                    <label className="flex items-center gap-2 text-sm text-[var(--text-primary)] cursor-pointer">
                      <input
                        type="checkbox"
                        checked={formData.requires_refrigeration}
                        onChange={(e) => setFormData({ ...formData, requires_refrigeration: e.target.checked })}
                        className="rounded border-[var(--border-secondary)] text-[var(--color-primary)] focus:ring-[var(--color-primary)]"
                      />
                      ❄️ Refrigeración
                    </label>
                    <label className="flex items-center gap-2 text-sm text-[var(--text-primary)] cursor-pointer">
                      <input
                        type="checkbox"
                        checked={formData.requires_freezing}
                        onChange={(e) => setFormData({ ...formData, requires_freezing: e.target.checked })}
                        className="rounded border-[var(--border-secondary)] text-[var(--color-primary)] focus:ring-[var(--color-primary)]"
                      />
                      🧊 Congelación
                    </label>
                    <label className="flex items-center gap-2 text-sm text-[var(--text-primary)] cursor-pointer">
                      <input
                        type="checkbox"
                        checked={formData.is_seasonal}
                        onChange={(e) => setFormData({ ...formData, is_seasonal: e.target.checked })}
                        className="rounded border-[var(--border-secondary)] text-[var(--color-primary)] focus:ring-[var(--color-primary)]"
                      />
                      🌿 Estacional
                    </label>
                  </div>
                </div>
              )}
            </div>

            {/* Info Box */}
            {!showOptionalFields && (
              <div className="bg-[var(--color-info)]/10 border border-[var(--color-info)]/20 rounded-lg p-3">
                <p className="text-sm text-[var(--text-secondary)] flex items-start gap-2">
                  <svg className="w-4 h-4 text-[var(--color-info)] mt-0.5 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
                  </svg>
                  <span>
                    💡 Puedes completar los detalles de stock y costos después en la gestión de inventario.
                  </span>
                </p>
              </div>
            )}

            {/* Error Message */}
            {errors.submit && (
              <div className="bg-[var(--color-error)]/10 border border-[var(--color-error)]/20 rounded-lg p-3">
                <p className="text-sm text-[var(--color-error)] flex items-center gap-2">
                  <svg className="w-4 h-4" fill="currentColor" viewBox="0 0 20 20">
                    <path fillRule="evenodd" d="M18 10a8 8 0 11-16 0 8 8 0 0116 0zm-7 4a1 1 0 11-2 0 1 1 0 012 0zm-1-9a1 1 0 00-1 1v4a1 1 0 102 0V6a1 1 0 00-1-1z" clipRule="evenodd" />
                  </svg>
                  {errors.submit}
                </p>
              </div>
            )}

            {/* Actions */}
            <div className="flex gap-3 pt-2">
              <button
                type="button"
                onClick={handleClose}
                disabled={isSubmitting}
                className="flex-1 px-4 py-2.5 text-[var(--text-secondary)] hover:text-[var(--text-primary)] hover:bg-[var(--bg-secondary)] rounded-lg transition-colors font-medium disabled:opacity-50"
              >
                Cancelar
              </button>
              <button
                type="submit"
                disabled={isSubmitting}
                className="flex-1 px-4 py-2.5 bg-[var(--color-primary)] text-white rounded-lg hover:bg-[var(--color-primary-dark)] disabled:opacity-50 disabled:cursor-not-allowed transition-colors font-medium flex items-center justify-center gap-2"
              >
                {isSubmitting ? (
                  <>
                    <div className="animate-spin rounded-full h-4 w-4 border-b-2 border-white"></div>
                    Agregando...
                  </>
                ) : (
                  <>
                    <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                      <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M5 13l4 4L19 7" />
                    </svg>
                    {getCtaText()}
                  </>
                )}
              </button>
            </div>
          </form>
        </div>
      </div>

      {/* Animation Styles */}
      <style>{`
        @keyframes fadeIn {
          from { opacity: 0; }
          to { opacity: 1; }
        }
        @keyframes slideUp {
          from {
            opacity: 0;
            transform: translateY(20px);
          }
          to {
            opacity: 1;
            transform: translateY(0);
          }
        }
        @keyframes slideDown {
          from {
            opacity: 0;
            max-height: 0;
          }
          to {
            opacity: 1;
            max-height: 500px;
          }
        }
        .animate-fadeIn {
          animation: fadeIn 0.2s ease-out;
        }
        .animate-slideUp {
          animation: slideUp 0.3s ease-out;
        }
        .animate-slideDown {
          animation: slideDown 0.3s ease-out;
        }
      `}</style>
    </>
  );
};