import type { BackgroundTask, TaskFilter, TaskListResult, UpdateBackgroundTask } from '@mastra/core/background-tasks';
import type { CreateIndexOptions, PruneOptions, PruneResult, RetentionTablesDescriptor, TableRetentionPolicy } from '@mastra/core/storage';
import { BackgroundTasksStorage } from '@mastra/core/storage';
import type { PgDomainConfig } from '../../db/index.js';
export declare class BackgroundTasksPG extends BackgroundTasksStorage {
    #private;
    static readonly MANAGED_TABLES: readonly ["mastra_background_tasks"];
    /**
     * Completed background tasks accumulate as dead weight. Anchored on the
     * timezone-aware `completedAtZ` mirror column: NULL (in-flight) rows are
     * excluded automatically since `completedAtZ < cutoff` is false for NULL.
     */
    static readonly retentionTables: RetentionTablesDescriptor;
    constructor(config: PgDomainConfig);
    init(): Promise<void>;
    /**
     * Lazily ensures a btree index exists on each configured policy's retention
     * anchor column so age-based `prune()` deletes stay fast on large tables.
     * Called from the prune path (not init) so only deployments that configure
     * retention pay the index's write/disk overhead. Best-effort: failures are
     * logged and pruning proceeds (correct, just slower).
     * Created even with `skipDefaultIndexes` — retention is an explicit opt-in,
     * so its supporting index is not part of the default index set.
     */
    private ensureRetentionIndexes;
    /** Delete completed tasks older than the `backgroundTasks` policy's `maxAge`, batched. */
    prune(policies: Record<string, TableRetentionPolicy>, options?: PruneOptions): Promise<PruneResult[]>;
    static getDefaultIndexDefs(schemaPrefix: string): CreateIndexOptions[];
    static getExportDDL(schemaName?: string): string[];
    getDefaultIndexDefinitions(): CreateIndexOptions[];
    createDefaultIndexes(): Promise<void>;
    createCustomIndexes(): Promise<void>;
    dangerouslyClearAll(): Promise<void>;
    createTask(task: BackgroundTask): Promise<void>;
    updateTask(taskId: string, update: UpdateBackgroundTask, options?: {
        expectedStatus?: BackgroundTask['status'];
    }): Promise<boolean>;
    getTask(taskId: string): Promise<BackgroundTask | null>;
    listTasks(filter: TaskFilter): Promise<TaskListResult>;
    deleteTask(taskId: string): Promise<void>;
    deleteTasks(filter: TaskFilter): Promise<void>;
    getRunningCount(): Promise<number>;
    getRunningCountByAgent(agentId: string): Promise<number>;
}
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