/**
 * MongoDB adapter for UnBloque blog
 * @module @unbloque/blog-core/adapters
 */
import type { BlogAdapter } from "./adapter";
import type { BlogPost, CreateBlogPostInput, UpdateBlogPostInput, BlogPostFilters } from "../types";
export interface MongoDBAdapterConfig {
    uri: string;
    databaseName?: string;
    collectionName?: string;
}
/**
 * MongoDB database adapter
 * Requires MONGODB_URI environment variable
 */
export declare class MongoDBAdapter implements BlogAdapter {
    private client;
    private db;
    private collection;
    private databaseName;
    private collectionName;
    private isInitialized;
    constructor(config: MongoDBAdapterConfig);
    initialize(): Promise<void>;
    getPosts(filters?: BlogPostFilters): Promise<BlogPost[]>;
    getPostBySlug(slug: string): Promise<BlogPost | null>;
    getPostById(id: string): Promise<BlogPost | null>;
    createPost(input: CreateBlogPostInput): Promise<BlogPost>;
    updatePost(id: string, input: UpdateBlogPostInput): Promise<BlogPost>;
    deletePost(id: string): Promise<void>;
    private ensureInitialized;
    private mapFromDb;
    private calculateReadingTime;
}
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