import React, { useState } from 'react';
import { Typography, Badge } from 'antd';
import { PiiConfigurationProps } from './types';
import { 
  CategoryFilter, 
  QuickActions, 
  PiiEntityList,
  formatEntityName,
  getActionIcon
} from './pii_components';

const { Title, Text } = Typography;

/**
 * A reusable component for rendering PII entity selection and action configuration
 * Used in both add and edit guardrail forms
 */
const PiiConfiguration: React.FC<PiiConfigurationProps> = ({
  entities,
  actions,
  selectedEntities,
  selectedActions,
  onEntitySelect,
  onActionSelect,
  entityCategories = []
}) => {
  const [selectedCategories, setSelectedCategories] = useState<string[]>([]);
  
  // Create a lookup map to quickly find an entity's category
  const entityToCategoryMap = new Map<string, string>();
  entityCategories.forEach(category => {
    category.entities.forEach(entity => {
      entityToCategoryMap.set(entity, category.category);
    });
  });
  
  // Filter entities based on selected categories
  const filteredEntities = entities.filter(entity => {
    return selectedCategories.length === 0 || 
           selectedCategories.includes(entityToCategoryMap.get(entity) || '');
  });
  
  // Select all entities with a specified action
  const handleSelectAll = (action: string) => {
    entities.forEach(entity => {
      if (!selectedEntities.includes(entity)) {
        onEntitySelect(entity);
      }
      onActionSelect(entity, action);
    });
  };
  
  // Unselect all entities
  const handleUnselectAll = () => {
    // Instead of iterating through each entity and toggling,
    // we'll directly set the selected entities to an empty array
    // This is more reliable and ensures a clean slate
    selectedEntities.forEach(entity => {
      onEntitySelect(entity);
    });
  };
  
  return (
    <div className="pii-configuration">
      <div className="flex justify-between items-center mb-5">
        <div className="flex items-center">
          <Title level={4} className="mb-0 font-semibold text-gray-800">Configure PII Protection</Title>
        </div>
        <Badge 
          count={selectedEntities.length} 
          showZero 
          style={{ backgroundColor: selectedEntities.length > 0 ? '#4f46e5' : '#d9d9d9' }}
          overflowCount={999}
        >
          <Text className="text-gray-500">{selectedEntities.length} items selected</Text>
        </Badge>
      </div>
      
      <div className="mb-6">
        <CategoryFilter 
          categories={entityCategories} 
          selectedCategories={selectedCategories} 
          onChange={setSelectedCategories} 
        />
        
        <QuickActions 
          onSelectAll={handleSelectAll} 
          onUnselectAll={handleUnselectAll} 
          hasSelectedEntities={selectedEntities.length > 0} 
        />
      </div>
      
      <PiiEntityList 
        entities={filteredEntities} 
        selectedEntities={selectedEntities} 
        selectedActions={selectedActions} 
        actions={actions} 
        onEntitySelect={onEntitySelect} 
        onActionSelect={onActionSelect} 
        entityToCategoryMap={entityToCategoryMap} 
      />
    </div>
  );
};

export default PiiConfiguration;