import type { FileRef } from '../../common/protocol.js';
import type { GlkOte } from '../../glkote/common/glkote.js';
export type Dialog = AsyncDialog | ClassicSyncDialog | ClassicStreamingDialog;
export interface AutosaveData {
    ram?: number[] | Uint8Array;
}
export interface DialogOptions {
    dom_prefix?: string;
    GlkOte: GlkOte;
}
export interface AsyncDialog {
    async: true;
    /** Delete a file */
    delete(path: string): Promise<void>;
    /** Check if a file exists */
    exists(path: string): Promise<boolean>;
    /** Get directories */
    get_dirs(): DialogDirectories;
    /** Initialise the library */
    init(options: DialogOptions): Promise<void>;
    /** Prompt the user for a filename */
    prompt(extension: string, save: boolean): Promise<string | null>;
    /** Read a file */
    read(path: string): Promise<Uint8Array | null>;
    /** Set storyfile directory and return directories */
    set_storyfile_dir(path: string): Partial<DialogDirectories>;
    /** Write some files */
    write(files: Record<string, Uint8Array>): Promise<void>;
}
export interface DialogDirectories {
    /** The storyfile directory, used by `garglk_add_resource_from_file` */
    storyfile: string;
    /** The system current working directory, used by `glkunix_stream_open_pathname` */
    system_cwd: string;
    /** Temp folder */
    temp: string;
    /** The Glk "current directory", used by `glk_fileref_create_by_name`/`glk_fileref_create_by_prompt` */
    working: string;
}
interface ClassicDialogBase {
    async: false;
    /** Clear an autosave */
    autosave_clear?(): Promise<void>;
    /** Read an autosave */
    autosave_read(signature: string): AutosaveData | null;
    /** Save or delete an autosave */
    autosave_write(signature: string, snapshot: AutosaveData | null): void;
    /** Name of this Dialog instance */
    classname: string;
    /** Clean a filename into one that can be used */
    file_clean_fixed_name(filename: string, usage: number): string;
    /** Construct a file ref */
    file_construct_ref(filename?: string, usage?: string, gameid?: string): FileRef;
    /** Construct a file ref for a temporary file */
    file_construct_temp_ref(usage: string): FileRef;
    /** Does the file for a file ref actually exist? */
    file_ref_exists(fref: FileRef): boolean;
    /** Delete a file */
    file_remove_ref(fref: FileRef): void;
    /** Returns libraries this instance has been given */
    getlibrary(name: string): GlkOte | null;
    /** Has this Dialog instance been init()ed? */
    inited(): boolean;
    /** Open a file choosing dialog */
    open(save: boolean, usage: string | null, gameid: string | null | undefined, callback: (fref: FileRef | null) => void): void;
    /** Whether or not this Dialog instance uses the streaming API */
    streaming: boolean;
}
/** Synchronous Dialog library for browsers */
export interface ClassicSyncDialog extends ClassicDialogBase {
    /** Read a file */
    file_read(fref: FileRef): Uint8Array | null;
    /** Write a file */
    file_write(fref: FileRef, content: Uint8Array | '', raw_string?: boolean): boolean;
    /** Initialise the library */
    init(options?: DialogOptions): void;
    streaming: false;
}
/** Streaming Dialog library for Node/Electron */
export interface ClassicStreamingDialog extends ClassicDialogBase {
    /** Open a file */
    file_fopen(fmode: number, fref: FileRef): ClassicFileStream | null;
    /** Initialise the library */
    init_async(options: DialogOptions, callback: () => void): void;
    streaming: true;
}
/** A file stream */
export interface ClassicFileStream {
    /** A reference to a buffer class - except that browsers may load this interface and they don't have Buffer, so just say `any` for now */
    BufferClass: any;
    /** Close this stream */
    fclose(): void;
    /** Flush the stream */
    fflush(): void;
    /** Read bytes from a file
     *
     * Up to buf.length bytes are read into the given buffer. If the len
     * argument is given, up to len bytes are read; the buffer must be at least
     * len bytes long. Returns the number of bytes read, or 0 if end-of-file. */
    fread(buf: Uint8Array, len?: number): number;
    /** Seek to position */
    fseek(pos: number, seekmode: number): void;
    /** Get the current stream position */
    ftell(): number;
    /** Write bytes to a file
     *
     * buf.length bytes are written to the stream. If the len argument is
     * given, that many bytes are written; the buffer must be at least len
     * bytes long. Return the number of bytes written. */
    fwrite(buf: Uint8Array, len?: number): number;
}
export {};