/**
 * PauseService - Effect-based pause operations.
 *
 * Provides Effect-based API for querying and managing paused pipelines.
 * Depends on CheckpointService for storage access.
 */
import { Context, Effect, Layer } from 'effect';
import { CheckpointService } from '../checkpoint/service';
import type { PendingPause } from './types';
import { PauseNotFoundError, PauseExpiredError } from '../errors';
/**
 * PauseService interface.
 *
 * Provides Effect-based pause query operations with typed errors.
 */
export interface PauseService {
    /**
     * Get pending pause for a specific run.
     *
     * @param runId - The run identifier to check
     * @returns PendingPause or fails with PauseNotFoundError
     */
    getPendingPause(runId: string): Effect.Effect<PendingPause, PauseNotFoundError | PauseExpiredError>;
    /**
     * List all pending pauses across all runs.
     *
     * Queries checkpoints with status='paused' and filters out expired ones.
     *
     * @returns Array of pending pauses, sorted by createdAt descending (newest first)
     */
    listPendingPauses(): Effect.Effect<PendingPause[]>;
    /**
     * Check if a run has a pending pause.
     *
     * @param runId - The run identifier to check
     * @returns true if run is paused and not expired
     */
    hasPendingPause(runId: string): Effect.Effect<boolean>;
}
export declare const PauseService: Context.Tag<PauseService, PauseService>;
/**
 * Live layer providing PauseService (depends on CheckpointService)
 */
export declare const PauseServiceLive: Layer.Layer<PauseService, never, CheckpointService>;
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