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import { Client } from '@elastic/elasticsearch';

const client = new Client({ node: process.env.ELASTICSEARCH_URL });

// Create index with custom mappings
await client.indices.create({
  index: 'products',
  mappings: {
    properties: {
      name:        { type: 'text', analyzer: 'english' },
      description: { type: 'text' },
      price:       { type: 'float' },
      category:    { type: 'keyword' },
      embedding:   { type: 'dense_vector', dims: 1536, index: true, similarity: 'cosine' },
    },
  },
});

// Semantic + keyword hybrid search
const results = await client.search({
  index: 'products',
  knn: { field: 'embedding', query_vector: queryEmbedding, k: 10, num_candidates: 100 },
  query: { match: { name: 'wireless headphones' } },
});