import type { Assembly, File, Model } from "@inweb/client";
import type { IViewer } from "../viewer/IViewer";
/**
 * Defines the file source to load into the viewer:
 *
 * - `File`, `Assembly`, or `Model` instance from the Open Cloud Server
 * - `URL` string
 * - {@link https://developer.mozilla.org/docs/Web/HTTP/Basics_of_HTTP/Data_URIs | Data URL} string
 * - {@link https://developer.mozilla.org/docs/Web/API/File | Web API File} object
 * - {@link https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer | ArrayBuffer}
 *   object
 */
export type FileSource = File | Assembly | Model | string | globalThis.File | ArrayBuffer;
/**
 * Defines the file loading parameters (loader depended).
 */
export type LoadParams = {
    [key: string | number | symbol]: any;
};
/**
 * Defines the file loader for the viewer.
 */
export interface ILoader {
    /**
     * The name of the loader.
     */
    name?: string;
    /**
     * Releases resources allocated by the loader.
     */
    dispose(): void;
    /**
     * Returns `true` if the specified file can be loaded by this loader.
     *
     * @param file - File to load.
     * @param format - File format string.
     */
    isSupport(file: FileSource, format?: string): boolean;
    /**
     * Loads a file into the viewer.
     *
     * @param file - File to load.
     * @param format - File format string.
     * @param params - Loading parameters.
     */
    load(file: FileSource, format?: string, params?: LoadParams): Promise<this>;
    /**
     * Cancels asynchronous loading started with {@link load | load()}.
     */
    cancel(): void;
    /**
     * Yields control back to the browser's event loop, allowing UI updates and other pending tasks to
     * execute. This method is used during long-running loading operations to prevent the browser from
     * becoming unresponsive.
     */
    yield(): Promise<void>;
}
/**
 * Defines the loader provider function.
 */
export interface ILoaderProvider {
    /**
     * @param viewer - Viewer instance that creates the loader.
     */
    (viewer: any): ILoader;
}
/**
 * Defines the viewer loaders registry interface.
 */
export interface ILoadersRegistry {
    /**
     * Binds a loader name to a loader. Registering a loader with an existing name twice overrides the
     * existing loader.
     *
     * @param name - Unique name for the loader.
     * @param provider - Loader provider.
     */
    registerLoader(name: string, provider: ILoaderProvider): void;
    /**
     * Returns a list of registered loaders.
     */
    getLoaders(): Map<string, ILoaderProvider>;
    /**
     * Creates the loader of the specified file. Returns `null` if the file format is not supported.
     *
     * @param viewer - Viewer instance that wants to create the loader.
     */
    createLoader(viewer: IViewer, file: FileSource, format?: string): ILoader | null;
}