/**
 * HarborForge Calendar Bridge Client
 *
 * PLG-CAL-001: Handles HTTP communication between the OpenClaw plugin
 * and the HarborForge backend for Calendar heartbeat and slot updates.
 *
 * Request authentication:
 *   • X-Agent-ID header — set to process.env.AGENT_ID
 *   • X-Claw-Identifier header — set to the server's claw_identifier
 *     (from plugin config or hostname fallback)
 *
 * Base URL:
 *   Derived from plugin config: backendUrl + "/calendar"
 *   Default backendUrl: "https://monitor.hangman-lab.top"
 *
 * Endpoints used:
 *   GET  /calendar/agent/heartbeat        — fetch pending slots
 *   PATCH /calendar/slots/{id}/agent-update   — update real slot status
 *   PATCH /calendar/slots/virtual/{vid}/agent-update — update virtual slot status
 *
 * References:
 *   • NEXT_WAVE_DEV_DIRECTION.md §6.1 (Heartbeat flow)
 *   • HarborForge.Backend/app/services/agent_heartbeat.py (BE-AGT-001)
 */
import { CalendarHeartbeatResponse, CalendarSlotResponse, SlotAgentUpdate } from './types';
export interface CalendarBridgeConfig {
    /** HarborForge backend base URL (e.g. "https://monitor.hangman-lab.top") */
    backendUrl: string;
    /** Server/claw identifier (from plugin config or hostname fallback) */
    clawIdentifier: string;
    /** OpenClaw agent ID ($AGENT_ID), set at agent startup */
    agentId: string;
    /** HTTP request timeout in milliseconds (default: 5000) */
    timeoutMs?: number;
}
export declare class CalendarBridgeClient {
    private baseUrl;
    private config;
    private timeoutMs;
    constructor(config: CalendarBridgeConfig);
    /**
     * Fetch today's pending calendar slots for this agent.
     *
     * Heartbeat flow (§6.1):
     *  1. Plugin sends heartbeat every minute
     *  2. Backend returns slots where status is NotStarted or Deferred
     *     AND scheduled_at <= now
     *  3. Plugin selects highest-priority slot (if any)
     *  4. For remaining slots, plugin sets status = Deferred + priority += 1
     *
     * @returns CalendarHeartbeatResponse or null if the backend is unreachable
     */
    heartbeat(): Promise<CalendarHeartbeatResponse | null>;
    /**
     * Update a real (materialized) slot's status after agent execution.
     *
     * Used by the plugin to report:
     *   - Slot attended (attended=true, started_at=now, status=Ongoing)
     *   - Slot finished (actual_duration set, status=Finished)
     *   - Slot deferred (status=Deferred, priority += 1)
     *   - Slot aborted (status=Aborted)
     *
     * @param slotId  Real slot DB id
     * @param update  Status update payload
     * @returns true on success, false on failure
     */
    updateSlot(slotId: number, update: SlotAgentUpdate): Promise<boolean>;
    /**
     * Update a virtual (plan-generated) slot's status after agent execution.
     *
     * When updating a virtual slot, the backend first materializes it
     * (creates a real TimeSlot row), then applies the update.
     * The returned slot will have a real id on subsequent calls.
     *
     * @param virtualId  Virtual slot id in format "plan-{plan_id}-{date}"
     * @param update     Status update payload
     * @returns Updated CalendarSlotResponse on success, null on failure
     */
    updateVirtualSlot(virtualId: string, update: SlotAgentUpdate): Promise<CalendarSlotResponse | null>;
    /**
     * Report the agent's current runtime status to HarborForge.
     *
     * Used to push agent status transitions:
     *   idle → busy / on_call  (when starting a slot)
     *   busy / on_call → idle  (when finishing a slot)
     *   → exhausted (on rate-limit / billing error, with recovery_at)
     *   → offline (after 2 min with no heartbeat)
     *
     * @param status  New agent status
     * @param recoveryAt  ISO timestamp for expected Exhausted recovery (optional)
     * @param exhaustReason "rate_limit" | "billing" (required if status=exhausted)
     */
    reportAgentStatus(params: {
        status: 'idle' | 'on_call' | 'busy' | 'exhausted' | 'offline';
        recoveryAt?: string;
        exhaustReason?: 'rate_limit' | 'billing';
    }): Promise<boolean>;
    private fetchJson;
    private postBoolean;
}
export interface CalendarPluginConfig {
    /** Backend URL for calendar API (overrides monitor backendUrl) */
    calendarBackendUrl?: string;
    /** Server identifier (overrides auto-detected hostname) */
    identifier?: string;
    /** Agent ID from OpenClaw ($AGENT_ID) */
    agentId: string;
    /** HTTP timeout for calendar API calls (default: 5000) */
    timeoutMs?: number;
}
/**
 * Build a CalendarBridgeClient from the OpenClaw plugin API context.
 *
 * @param api           OpenClaw plugin API (register() receives this)
 * @param fallbackUrl   Fallback backend URL if not configured
 * @param agentId       $AGENT_ID from OpenClaw environment
 */
export declare function createCalendarBridgeClient(api: {
    config?: Record<string, unknown>;
    logger?: {
        debug?: (...args: unknown[]) => void;
    };
}, fallbackUrl: string, agentId: string): CalendarBridgeClient;
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