import { AIClient, AIClientOptions } from '@happyvertical/ai';
import { StaticMapProvider } from '@happyvertical/geo';
import { HeadlineCardTemplate } from '@happyvertical/images';
import { DatabaseConfig } from '@happyvertical/smrt-core';
import { Image } from '@happyvertical/smrt-images';
import { Content } from './content';
/**
 * Available thumbnail generation strategies
 */
export type ThumbnailStrategy = 'headline-card' | 'static-map' | 'ai-generate';
/**
 * Base options for all strategies
 */
interface BaseThumbnailOptions {
    /**
     * Generation strategy
     */
    strategy: ThumbnailStrategy;
    /**
     * Width in pixels
     * @default 1200
     */
    width?: number;
    /**
     * Height in pixels
     * @default 630
     */
    height?: number;
}
/**
 * Options for headline card strategy
 */
export interface HeadlineCardThumbnailOptions extends BaseThumbnailOptions {
    strategy: 'headline-card';
    /**
     * Primary brand color (hex)
     * @default '#3b82f6'
     */
    brandColor?: string;
    /**
     * Background color (hex)
     * @default '#ffffff'
     */
    backgroundColor?: string;
    /**
     * Optional subtitle/category text
     */
    subtitle?: string;
    /**
     * Optional logo URL
     */
    logoUrl?: string;
    /**
     * Template style
     * @default 'default'
     */
    template?: HeadlineCardTemplate;
}
/**
 * Options for static map strategy
 */
export interface StaticMapThumbnailOptions extends BaseThumbnailOptions {
    strategy: 'static-map';
    /**
     * Map provider
     * @default 'mapbox'
     */
    mapProvider?: StaticMapProvider;
    /**
     * Zoom level (1-20)
     * @default 14
     */
    zoom?: number;
    /**
     * Marker color
     * @default 'e74c3c'
     */
    markerColor?: string;
    /**
     * Mapbox style (if using mapbox provider)
     */
    mapboxStyle?: string;
    /**
     * Google map type (if using google provider)
     */
    googleMapType?: 'roadmap' | 'satellite' | 'terrain' | 'hybrid';
}
/**
 * Options for AI generation strategy
 */
export interface AIGenerateThumbnailOptions extends BaseThumbnailOptions {
    strategy: 'ai-generate';
    /**
     * AI provider configuration
     */
    ai?: AIClientOptions | AIClient;
    /**
     * Custom prompt for image generation
     * If not provided, generates based on content title/body
     */
    prompt?: string;
    /**
     * Style hint for image generation
     * @default 'photorealistic'
     */
    style?: 'photorealistic' | 'illustration' | 'abstract' | 'minimal';
}
/**
 * Union type for all thumbnail options
 */
export type ThumbnailOptions = HeadlineCardThumbnailOptions | StaticMapThumbnailOptions | AIGenerateThumbnailOptions;
/**
 * Options for ThumbnailGenerator
 */
export interface ThumbnailGeneratorOptions {
    /**
     * Database configuration for storing generated images
     */
    db?: DatabaseConfig;
    /**
     * Alias for `db` — mirrors the `SmrtClassOptions.persistence` alias so
     * callers can pass the same options shape they use for SmrtObject/Collection.
     *
     * @deprecated Prefer `db`. Retained for parity with `SmrtClassOptions`.
     */
    persistence?: DatabaseConfig;
    /**
     * AI client configuration for AI-generated thumbnails
     */
    ai?: AIClientOptions | AIClient;
}
/**
 * ThumbnailGenerator creates thumbnails for content using various strategies
 */
export declare class ThumbnailGenerator {
    private content;
    private options;
    constructor(content: Content, options?: ThumbnailGeneratorOptions);
    /**
     * Generate a thumbnail using the specified strategy
     */
    generate(options: ThumbnailOptions): Promise<Image>;
    /**
     * Generate a headline card thumbnail
     */
    private generateHeadlineCard;
    /**
     * Generate a static map thumbnail
     */
    private generateStaticMap;
    /**
     * Generate a thumbnail using AI image generation
     */
    private generateWithAI;
    /**
     * Build a prompt for AI image generation based on content.
     *
     * Resolves via `@happyvertical/smrt-prompts` so tenants can override the
     * template/profile/model/params at runtime. Only non-PII content fields
     * (title, description) and the caller-supplied style hint are passed.
     * Internal IDs and the freeform `metadata` blob are intentionally excluded.
     *
     * Returns the full ResolvedPrompt (text + ai config) so the caller can
     * forward `model`/`params` overrides to `ai.generateImage()`. Returning
     * only the text would silently drop the editable model/params overrides.
     */
    private buildAIPrompt;
    /**
     * Create an Image object from a buffer
     */
    private createImageFromBuffer;
}
export {};
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