import { FileTypeInputUnion } from '../inputs';
import { ErrorUnion, StorageStatisticsUnion } from '../outputs';
/**
 * Optimizes storage usage, i.e. deletes some files and returns new storage usage statistics.
 * Secret thumbnails can't be deleted
 * @param {Object} params
 * @param {number} [params.size] - Limit on the total size of files after deletion.
 * Pass -1 to use the default limit
 * @param {number} [params.ttl] - Limit on the time that has passed since the last
 * time a file was accessed (or creation time for some filesystems). Pass -1 to use
 * the default limit
 * @param {number} [params.count] - Limit on the total count of files after deletion.
 * Pass -1 to use the default limit
 * @param {number} [params.immunityDelay] - The amount of time after the creation
 * of a file during which it can't be deleted, in seconds. Pass -1 to use the default
 * value
 * @param {FileTypeInputUnion[]} [params.fileTypes] - If not empty, only files with
 * the given type(s) are considered. By default, all types except thumbnails, profile
 * photos, stickers and wallpapers are deleted
 * @param {number[]} [params.chatIds] - If not empty, only files from the given chats
 * are considered. Use 0 as chat identifier to delete files not belonging to any chat
 * (e.g., profile photos)
 * @param {number[]} [params.excludeChatIds] - If not empty, files from the given
 * chats are excluded. Use 0 as chat identifier to exclude all files not belonging to
 * any chat (e.g., profile photos)
 * @param {number} [params.chatLimit] - Same as in getStorageStatistics. Affects
 * only returned statistics
 * @param {Object} state
 * @returns {StorageStatisticsUnion | ErrorUnion}
 */
export declare type OptimizeStorageMethod = <ResponseT = StorageStatisticsUnion>(params: OptimizeStorageParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface OptimizeStorageParams {
    /** Limit on the total size of files after deletion. Pass -1 to use the default limit */
    size?: number;
    /**
     * Limit on the time that has passed since the last time a file was accessed (or creation
     * time for some filesystems). Pass -1 to use the default limit
     */
    ttl?: number;
    /** Limit on the total count of files after deletion. Pass -1 to use the default limit */
    count?: number;
    /**
     * The amount of time after the creation of a file during which it can't be deleted,
     * in seconds. Pass -1 to use the default value
     */
    immunityDelay?: number;
    /**
     * If not empty, only files with the given type(s) are considered. By default, all types
     * except thumbnails, profile photos, stickers and wallpapers are deleted
     */
    fileTypes?: FileTypeInputUnion[];
    /**
     * If not empty, only files from the given chats are considered. Use 0 as chat identifier
     * to delete files not belonging to any chat (e.g., profile photos)
     */
    chatIds?: number[];
    /**
     * If not empty, files from the given chats are excluded. Use 0 as chat identifier to
     * exclude all files not belonging to any chat (e.g., profile photos)
     */
    excludeChatIds?: number[];
    /** Same as in getStorageStatistics. Affects only returned statistics */
    chatLimit?: number;
}