import { Type } from '@nestjs/common';
import { ModuleMetadata } from '@nestjs/common/interfaces';
import { PublishOptions } from '@google-cloud/pubsub/build/src/topic';
import { SubscriberOptions } from '@google-cloud/pubsub/build/src/subscriber';
export interface GCloudPubSubServerOptions {
    authOptions: GoogleAuthOptions;
    subscriptionIds: string[];
    subscriberOptions?: SubscriberOptions;
}
export declare type GcloudPubSubModuleOptions = {
    authOptions: GoogleAuthOptions;
    publishOptions?: PublishOptions;
};
export interface Message {
    topic: string;
    message: string;
    attributes: {
        [key: string]: string;
    };
}
interface CredentialBody {
    client_email?: string;
    private_key?: string;
}
export interface GoogleAuthOptions {
    /** Path to a .json, .pem, or .p12 key file */
    keyFilename?: string;
    /** Path to a .json, .pem, or .p12 key file */
    keyFile?: string;
    credentials?: CredentialBody;
    /** Required scopes for the desired API request */
    scopes?: string | string[];
    projectId?: string;
    uri?: string;
}
export interface GcloudPubSubOptionsFactory {
    createGcloudPubSubOptions(): Promise<GcloudPubSubModuleOptions> | GcloudPubSubModuleOptions;
}
export interface GcloudPubSubModuleAsyncOptions extends Pick<ModuleMetadata, 'imports'> {
    useExisting?: Type<GcloudPubSubOptionsFactory>;
    useClass?: Type<GcloudPubSubOptionsFactory>;
    useFactory?: (...args: any[]) => Promise<GcloudPubSubModuleOptions> | GcloudPubSubModuleOptions;
    inject?: any[];
}
export {};