/**
 * Model Manager Service
 *
 * Centralized service for managing all ML models:
 * - Loads models.config.yaml
 * - Downloads models on startup (runtime)
 * - Verifies SHA256 hashes
 * - Checks version compatibility
 * - Caches ONNX sessions and Transformers models
 * - Provides unified interface for model access
 */
import { OnApplicationBootstrap } from "@nestjs/common";
import { AppModeConfig } from "../../common/decorators/conditional-service.decorator";
import * as ort from "onnxruntime-node";
import type { ModelLoadStatus } from "./model-manager.config";
export declare class ModelManagerService implements OnApplicationBootstrap {
    private readonly appModeConfig?;
    private readonly logger;
    private readonly config;
    private readonly cacheDir;
    private readonly baseUrl;
    private readonly verifyHash;
    private readonly strictHash;
    private readonly autoUpdate;
    private onnxSessions;
    private transformersModels;
    private loadStatus;
    private readyPromise;
    private readyResolver;
    constructor(appModeConfig?: AppModeConfig);
    /**
     * Check if running in worker mode.
     * Defaults to worker mode if no app mode config (tests, standalone scripts).
     */
    private isWorkerMode;
    /**
     * Determine if a model should be loaded based on current app mode.
     * - Worker mode: load all models
     * - API mode: only load models marked with loadInApi: true
     */
    private shouldLoadModel;
    onApplicationBootstrap(): Promise<void>;
    private loadModel;
    private loadOnnxModel;
    private loadTransformersModel;
    private needsDownload;
    private downloadFile;
    private verifyFileHash;
    private computeHash;
    private ensureCacheDir;
    getOnnxSession(name: string): ort.InferenceSession | null;
    getTransformersModel(name: string, component?: string): any | null;
    isModelLoaded(name: string, framework: "onnx" | "transformers"): boolean;
    getLoadedModels(): {
        onnx: string[];
        transformers: string[];
    };
    getLoadStatus(): ModelLoadStatus[];
    /**
     * Wait for all models to be loaded.
     * Services that depend on models should call this before accessing them.
     */
    waitForReady(): Promise<void>;
}
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