import type { DB } from '../db/client.js';
import type { WhatsAppClient } from '../client/whatsapp.js';
import type { Emit } from '../events/emit.js';
export interface BroadcastOptions {
    client: WhatsAppClient;
    db: DB;
    channel: string;
    sendIntervalMs?: number;
    limit?: number;
    emit?: Emit;
}
export interface BroadcastUser {
    whatsapp: string;
    [k: string]: unknown;
}
export interface BroadcastResult {
    candidates: number;
    delivered: number;
    skipped: number;
}
export interface BroadcastRunArgs {
    send: (user: BroadcastUser) => Promise<boolean>;
    /**
     * Custom audience generator. When omitted, the default audience is
     * opt-in users with an open message window who haven't been logged
     * on `channel` today.
     */
    audience?: () => Promise<BroadcastUser[]>;
}
export declare class Broadcast {
    readonly client: WhatsAppClient;
    readonly db: DB;
    readonly channel: string;
    readonly sendIntervalMs: number;
    readonly limit: number;
    readonly emit: Emit | null;
    constructor({ client, db, channel, sendIntervalMs, limit, emit }: BroadcastOptions);
    defaultAudience(): Promise<BroadcastUser[]>;
    run({ send, audience }: BroadcastRunArgs): Promise<BroadcastResult>;
    logDelivered(whatsapp: string): Promise<void>;
    wasDeliveredToday(whatsapp: string): Promise<boolean>;
}
//# sourceMappingURL=broadcast.d.ts.map