import { type Pool, type PoolConfig } from "mariadb";
import { VectorStore } from "@langchain/core/vectorstores";
import type { EmbeddingsInterface } from "@langchain/core/embeddings";
import { Document } from "@langchain/core/documents";
type Metadata = Record<string, unknown>;
export type DistanceStrategy = "COSINE" | "EUCLIDEAN";
/**
 * Interface that defines the arguments required to create a
 * `MariaDBStore` instance. It includes MariaDB connection options,
 * table name and verbosity level.
 */
export interface MariaDBStoreArgs {
    connectionOptions?: PoolConfig;
    pool?: Pool;
    tableName?: string;
    collectionTableName?: string;
    collectionName?: string;
    collectionMetadata?: Metadata | null;
    schemaName?: string | null;
    columns?: {
        idColumnName?: string;
        vectorColumnName?: string;
        contentColumnName?: string;
        metadataColumnName?: string;
    };
    verbose?: boolean;
    /**
     * The amount of documents to chunk by when
     * adding vectors.
     * @default 500
     */
    chunkSize?: number;
    ids?: string[];
    distanceStrategy?: DistanceStrategy;
}
/**
 * MariaDB vector store integration.
 *
 * Setup:
 * Install `@langchain/community` and `mariadb`.
 *
 * If you wish to generate ids, you should also install the `uuid` package.
 *
 * ```bash
 * npm install @langchain/community mariadb uuid
 * ```
 *
 * ## [Constructor args](https://api.js.langchain.com/classes/_langchain_community.vectorstores_mariadb.MariaDB.html#constructor)
 *
 * <details open>
 * <summary><strong>Instantiate</strong></summary>
 *
 * ```typescript
 * import {
 *   MariaDBStore,
 *   DistanceStrategy,
 * } from "@langchain/community/vectorstores/mariadb";
 *
 * // Or other embeddings
 * import { OpenAIEmbeddings } from "@langchain/openai";
 * import { PoolConfig } from "mariadb";
 *
 * const embeddings = new OpenAIEmbeddings({
 *   model: "text-embedding-3-small",
 * });
 *
 * // Sample config
 * const config = {
 *   connectionOptions: {
 *     host: "127.0.0.1",
 *     port: 3306,
 *     user: "myuser",
 *     password: "ChangeMe",
 *     database: "api",
 *   } as PoolConfig,
 *   tableName: "testlangchainjs",
 *   columns: {
 *     idColumnName: "id",
 *     vectorColumnName: "vector",
 *     contentColumnName: "content",
 *     metadataColumnName: "metadata",
 *   },
 *   // supported distance strategies: COSINE (default) or EUCLIDEAN
 *   distanceStrategy: "COSINE" as DistanceStrategy,
 * };
 *
 * const vectorStore = await MariaDBStore.initialize(embeddings, config);
 * ```
 * </details>
 *
 * <br />
 *
 * <details>
 * <summary><strong>Add documents</strong></summary>
 *
 * ```typescript
 * import type { Document } from '@langchain/core/documents';
 *
 * const document1 = { pageContent: "foo", metadata: { baz: "bar" } };
 * const document2 = { pageContent: "thud", metadata: { bar: "baz" } };
 * const document3 = { pageContent: "i will be deleted :(", metadata: {} };
 *
 * const documents: Document[] = [document1, document2, document3];
 * const ids = ["1", "2", "3"];
 * await vectorStore.addDocuments(documents, { ids });
 * ```
 * </details>
 *
 * <br />
 *
 * <details>
 * <summary><strong>Delete documents</strong></summary>
 *
 * ```typescript
 * await vectorStore.delete({ ids: ["3"] });
 * ```
 * </details>
 *
 * <br />
 *
 * <details>
 * <summary><strong>Similarity search</strong></summary>
 *
 * ```typescript
 * const results = await vectorStore.similaritySearch("thud", 1);
 * for (const doc of results) {
 *   console.log(`* ${doc.pageContent} [${JSON.stringify(doc.metadata, null)}]`);
 * }
 * // Output: * thud [{"baz":"bar"}]
 * ```
 * </details>
 *
 * <br />
 *
 *
 * <details>
 * <summary><strong>Similarity search with filter</strong></summary>
 *
 * ```typescript
 * const resultsWithFilter = await vectorStore.similaritySearch("thud", 1, {"country": "BG"});
 *
 * for (const doc of resultsWithFilter) {
 *   console.log(`* ${doc.pageContent} [${JSON.stringify(doc.metadata, null)}]`);
 * }
 * // Output: * foo [{"baz":"bar"}]
 * ```
 * </details>
 *
 * <br />
 *
 *
 * <details>
 * <summary><strong>Similarity search with score</strong></summary>
 *
 * ```typescript
 * const resultsWithScore = await vectorStore.similaritySearchWithScore("qux", 1);
 * for (const [doc, score] of resultsWithScore) {
 *   console.log(`* [SIM=${score.toFixed(6)}] ${doc.pageContent} [${JSON.stringify(doc.metadata, null)}]`);
 * }
 * // Output: * [SIM=0.000000] qux [{"bar":"baz","baz":"bar"}]
 * ```
 * </details>
 *
 * <br />
 *
 * <details>
 * <summary><strong>As a retriever</strong></summary>
 *
 * ```typescript
 * const retriever = vectorStore.asRetriever({
 *   searchType: "mmr", // Leave blank for standard similarity search
 *   k: 1,
 * });
 * const resultAsRetriever = await retriever.invoke("thud");
 * console.log(resultAsRetriever);
 *
 * // Output: [Document({ metadata: { "baz":"bar" }, pageContent: "thud" })]
 * ```
 * </details>
 *
 * <br />
 */
export declare class MariaDBStore extends VectorStore {
    tableName: string;
    collectionTableName?: string;
    collectionName: string;
    collectionId?: string;
    collectionMetadata: Metadata | null;
    schemaName: string | null;
    idColumnName: string;
    vectorColumnName: string;
    contentColumnName: string;
    metadataColumnName: string;
    _verbose?: boolean;
    pool: Pool;
    chunkSize: number;
    distanceStrategy: DistanceStrategy;
    constructor(embeddings: EmbeddingsInterface, config: MariaDBStoreArgs);
    get computedTableName(): string;
    get computedCollectionTableName(): string;
    /**
     * Escape identifier
     *
     * @param identifier identifier value
     * @param alwaysQuote must identifier be quoted if not required
     */
    private escapeId;
    private printable;
    /**
     * Static method to create a new `MariaDBStore` instance from a
     * connection. It creates a table if one does not exist, and calls
     * `connect` to return a new instance of `MariaDBStore`.
     *
     * @param embeddings - Embeddings instance.
     * @param fields - `MariaDBStoreArgs` instance
     * @param fields.dimensions Number of dimensions in your vector data type. default to 1536.
     * @returns A new instance of `MariaDBStore`.
     */
    static initialize(embeddings: EmbeddingsInterface, config: MariaDBStoreArgs & {
        dimensions?: number;
    }): Promise<MariaDBStore>;
    /**
     * Static method to create a new `MariaDBStore` instance from an
     * array of texts and their metadata. It converts the texts into
     * `Document` instances and adds them to the store.
     *
     * @param texts - Array of texts.
     * @param metadatas - Array of metadata objects or a single metadata object.
     * @param embeddings - Embeddings instance.
     * @param dbConfig - `MariaDBStoreArgs` instance.
     * @returns Promise that resolves with a new instance of `MariaDBStore`.
     */
    static fromTexts(texts: string[], metadatas: object[] | object, embeddings: EmbeddingsInterface, dbConfig: MariaDBStoreArgs & {
        dimensions?: number;
    }): Promise<MariaDBStore>;
    /**
     * Static method to create a new `MariaDBStore` instance from an
     * array of `Document` instances. It adds the documents to the store.
     *
     * @param docs - Array of `Document` instances.
     * @param embeddings - Embeddings instance.
     * @param dbConfig - `MariaDBStoreArgs` instance.
     * @returns Promise that resolves with a new instance of `MariaDBStore`.
     */
    static fromDocuments(docs: Document[], embeddings: EmbeddingsInterface, dbConfig: MariaDBStoreArgs & {
        dimensions?: number;
    }): Promise<MariaDBStore>;
    _vectorstoreType(): string;
    /**
     * Method to add documents to the vector store. It converts the documents into
     * vectors, and adds them to the store.
     *
     * @param documents - Array of `Document` instances.
     * @param options - Optional arguments for adding documents
     * @returns Promise that resolves when the documents have been added.
     */
    addDocuments(documents: Document[], options?: {
        ids?: string[];
    }): Promise<void>;
    /**
     * Inserts a row for the collectionName provided at initialization if it does not
     * exist and set the collectionId.
     */
    private loadCollectionId;
    /**
     * Method to add vectors to the vector store. It converts the vectors into
     * rows and inserts them into the database.
     *
     * @param vectors - Array of vectors.
     * @param documents - Array of `Document` instances.
     * @param options - Optional arguments for adding documents
     * @returns Promise that resolves when the vectors have been added.
     */
    addVectors(vectors: number[][], documents: Document[], options?: {
        ids?: string[];
    }): Promise<void>;
    /**
     * Convert float array to binary value
     * @param vector embedding value
     * @private
     */
    private getFloat32Buffer;
    /**
     * Method to delete documents from the vector store. It deletes the
     * documents that match the provided ids
     *
     * @param ids - array of ids
     * @returns Promise that resolves when the documents have been deleted.
     * @example
     * await vectorStore.delete(["id1", "id2"]);
     */
    delete(params: {
        ids?: string[];
        filter?: Record<string, unknown>;
    }): Promise<void>;
    private filterConverter;
    private subFilterConverter;
    /**
     * Method to perform a similarity search in the vector store. It returns
     * the `k` most similar documents to the query vector, along with their
     * similarity scores.
     *
     * @param query - Query vector.
     * @param k - Number of most similar documents to return.
     * @param filter - Optional filter to apply to the search.
     * @returns Promise that resolves with an array of tuples, each containing a `Document` and its similarity score.
     */
    similaritySearchVectorWithScore(query: number[], k: number, filter?: Record<string, unknown>): Promise<[Document, number][]>;
    /**
     * Method to ensure the existence of the table in the database. It creates
     * the table if it does not already exist.
     * @param dimensions Number of dimensions in your vector data type. Default to 1536.
     * @returns Promise that resolves when the table has been ensured.
     */
    ensureTableInDatabase(dimensions?: number): Promise<void>;
    /**
     * Method to ensure the existence of the collection table in the database.
     * It creates the table if it does not already exist.
     *
     * @returns Promise that resolves when the collection table has been ensured.
     */
    ensureCollectionTableInDatabase(): Promise<void>;
    /**
     * Close the pool.
     *
     * @returns Promise that resolves when the pool is terminated.
     */
    end(): Promise<void>;
}
export {};