import type { Task, ArchivedTask } from "../types.js";
export interface AutoArchiveConfig {
    /** Minimum age in days before a task can be auto-archived */
    minAgeDays: number;
    /** Maximum number of recent completed tasks to keep (not auto-archive) */
    keepRecentCount: number;
}
export declare const DEFAULT_AUTO_ARCHIVE_CONFIG: AutoArchiveConfig;
export interface CollectedArchiveTasks {
    /** The root task to archive */
    root: Task;
    /** All descendant tasks (children, grandchildren, etc.) */
    descendants: Task[];
}
/**
 * Convert a full Task to a compacted ArchivedTask.
 *
 * Strips: blockedBy, blocks, children, created_at, updated_at, priority
 * Preserves: id, parent_id, name, description, completed_at, result, metadata.github, metadata.commit
 * Adds: archived_at, archived_children (rolled up from children)
 *
 * @param task The task to compact
 * @param children Direct child tasks to roll up into archived_children
 * @returns Compacted ArchivedTask
 */
export declare function compactTask(task: Task, children?: Task[]): ArchivedTask;
/**
 * Collect a task and all its descendants for archival.
 * Validates that all collected tasks are completed and have no active ancestors.
 *
 * @param taskId The root task ID to archive
 * @param allTasks All tasks in the store
 * @returns Object with root task and descendants, or null if validation fails
 * @throws Error if task not found or validation fails
 */
export declare function collectArchivableTasks(taskId: string, allTasks: Task[]): CollectedArchiveTasks | null;
/**
 * Check if a task meets auto-archive criteria.
 *
 * Criteria:
 * - Task is completed
 * - All descendants are completed
 * - No active (incomplete) ancestors
 * - Task is older than config.minAgeDays
 * - Task is not in the most recent config.keepRecentCount completed tasks
 *
 * @param task The task to check
 * @param allTasks All tasks in the store
 * @param config Auto-archive configuration
 * @returns true if task can be auto-archived
 */
export declare function canAutoArchive(task: Task, allTasks: Task[], config?: AutoArchiveConfig): boolean;
/**
 * Find all tasks that are eligible for auto-archiving.
 *
 * @param allTasks All tasks in the store
 * @param config Auto-archive configuration
 * @returns Array of tasks eligible for auto-archiving
 */
export declare function findAutoArchivableTasks(allTasks: Task[], config?: AutoArchiveConfig): Task[];
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