import type { DB } from '../db/client.js';
import type { WhatsAppClient } from '../client/whatsapp.js';
export interface ReEngagementQuestion {
    body: string;
    yesLabel?: string;
    noLabel?: string;
}
export interface ReEngagementTemplate {
    name: string;
    language?: string;
}
export interface ReEngagementOptions {
    client: WhatsAppClient;
    db: DB;
    topicId: number;
    question: ReEngagementQuestion;
    template?: ReEngagementTemplate | null;
}
export interface DayProgress {
    day_of_week: number;
    date: string;
    answer: string | null;
}
export declare class ReEngagement {
    readonly client: WhatsAppClient;
    readonly db: DB;
    readonly topicId: number;
    readonly question: Required<ReEngagementQuestion>;
    readonly template: ReEngagementTemplate | null;
    constructor({ client, db, topicId, question, template }: ReEngagementOptions);
    get yesId(): string;
    get noId(): string;
    ask(whatsapp: string, { useTemplate }?: {
        useTemplate?: boolean;
    }): Promise<boolean>;
    /**
     * Record a user's answer. `daysAgo` defaults to 1 — answers usually arrive
     * the day *after* the question went out, so we attribute them to yesterday.
     */
    recordAnswer(whatsapp: string, buttonOrAnswer: string, { daysAgo }?: {
        daysAgo?: number;
    }): Promise<unknown>;
    /**
     * Returns a 7-row array (one per day for the trailing week), with `answer`
     * = null for days the user didn't respond. Day 1 = 7 days ago, Day 7 = today.
     */
    weekProgress(whatsapp: string): Promise<DayProgress[]>;
}
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