import { InputFileInputUnion } from '../inputs';
import { ErrorUnion, OkUnion } from '../outputs';
/**
 * Changes the photo of a chat. Supported only for basic groups, supergroups and channels.
 * Requires administrator rights in basic groups and the appropriate administrator rights
 * in supergroups and channels. The photo will not be changed before request to the
 * server has been completed
 * @param {Object} params
 * @param {number} [params.chatId] - Chat identifier
 * @param {InputFileInputUnion} [params.photo] - New chat photo. You can use a zero
 * InputFileId to delete the chat photo. Files that are accessible only by HTTP URL
 * are not acceptable
 * @param {Object} state
 * @returns {OkUnion | ErrorUnion}
 */
export declare type SetChatPhotoMethod = <ResponseT = OkUnion>(params: SetChatPhotoParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface SetChatPhotoParams {
    /** Chat identifier */
    chatId?: number;
    /**
     * New chat photo. You can use a zero InputFileId to delete the chat photo. Files that
     * are accessible only by HTTP URL are not acceptable
     */
    photo?: InputFileInputUnion;
}