import { Hono } from 'hono';
import { PptxRasterizer, PptxBatchRasterizer } from '@json-to-office/shared';

type ApiAuthMode = 'auto' | 'required' | 'disabled';
type OutboundSourceMode = 'development' | 'safe';

interface ApiKeyAuthOptions {
    mode: ApiAuthMode;
    apiKey?: string;
    headerName?: string;
}

interface OutboundSourcePolicy {
    mode: OutboundSourceMode;
    allowedHosts: readonly string[];
}

/** Public front server for the chart exporter and pptx rasterizer. */

type FetchImplementation = typeof fetch;
interface RenderServerOptions {
    upstreamUrl?: string;
    proxyTimeoutMs?: number;
    healthTimeoutMs?: number;
    maxExportBodyBytes?: number;
    maxRasterizeBodyBytes?: number;
    maxResponseBytes?: number;
    maxConcurrent?: number;
    exportRateLimit?: number;
    rasterizeRateLimit?: number;
    rateLimitWindowMs?: number;
    trustProxyHeaders?: boolean;
    auth?: ApiKeyAuthOptions;
    sourcePolicy?: OutboundSourcePolicy;
    fetch?: FetchImplementation;
    getRasterizer?: () => PptxRasterizer;
    getBatchRasterizer?: () => PptxBatchRasterizer;
}
declare function createRenderServerApp(options?: RenderServerOptions): Hono;

export { type RenderServerOptions, createRenderServerApp };