import type { ChannelHeartbeatDeps } from "../channels/plugins/types.js";
import type { SKYKOIConfig } from "../config/config.js";
import type { KoiDefaultsConfig } from "../config/types.koi-defaults.js";
import type { OutboundSendDeps } from "./outbound/deliver.js";
import { type RuntimeEnv } from "../runtime.js";
import { type HeartbeatRunResult } from "./heartbeat-wake.js";
type HeartbeatDeps = OutboundSendDeps & ChannelHeartbeatDeps & {
    runtime?: RuntimeEnv;
    getQueueSize?: (lane?: string) => number;
    nowMs?: () => number;
};
export declare function setHeartbeatsEnabled(enabled: boolean): void;
type HeartbeatConfig = KoiDefaultsConfig["heartbeat"];
export type HeartbeatSummary = {
    enabled: boolean;
    every: string;
    everyMs: number | null;
    prompt: string;
    target: string;
    model?: string;
    ackMaxChars: number;
};
export type HeartbeatRunner = {
    stop: () => void;
    updateConfig: (cfg: SKYKOIConfig) => void;
};
/** Whether heartbeat is enabled for a specific koi (checks explicit config and default fallback). */
export declare function isHeartbeatEnabledForKoi(cfg: SKYKOIConfig, koiId?: string): boolean;
/**
 * Builds a complete heartbeat summary for a koi, merging defaults with
 * per-koi overrides. Used by status/diagnostic endpoints.
 */
export declare function resolveHeartbeatSummaryForKoi(cfg: SKYKOIConfig, koiId?: string): HeartbeatSummary;
/** Parses the heartbeat interval from config, returning milliseconds or null if disabled. */
export declare function resolveHeartbeatIntervalMs(cfg: SKYKOIConfig, overrideEvery?: string, heartbeat?: HeartbeatConfig): number | null;
export declare function resolveHeartbeatPrompt(cfg: SKYKOIConfig, heartbeat?: HeartbeatConfig): string;
/**
 * Runs a single heartbeat cycle for one koi: resolves the session, checks
 * active hours / queue depth / HEARTBEAT.md content, calls the LLM, normalizes
 * the reply, deduplicates, and delivers to the target channel.
 *
 * @param opts.cfg - Runtime config (defaults to `loadConfig()`)
 * @param opts.koiId - Koi to heartbeat (defaults to the default koi)
 * @param opts.heartbeat - Per-koi heartbeat config overrides
 * @param opts.reason - Why this heartbeat was triggered (e.g. "interval", "exec-event")
 * @returns Status indicating whether the heartbeat ran, was skipped, or failed
 */
export declare function runHeartbeatOnce(opts: {
    cfg?: SKYKOIConfig;
    koiId?: string;
    heartbeat?: HeartbeatConfig;
    reason?: string;
    deps?: HeartbeatDeps;
}): Promise<HeartbeatRunResult>;
/**
 * Creates and starts a heartbeat runner that schedules periodic heartbeats
 * for all configured kois. Responds to config reloads and manual wake
 * requests.
 *
 * @param opts.cfg - Initial config snapshot
 * @param opts.abortSignal - Signal to stop the runner and clean up timers
 * @returns Handle with `stop()` and `updateConfig()` methods
 */
export declare function startHeartbeatRunner(opts: {
    cfg?: SKYKOIConfig;
    runtime?: RuntimeEnv;
    abortSignal?: AbortSignal;
    runOnce?: typeof runHeartbeatOnce;
}): HeartbeatRunner;
export {};