import type { Client } from '@libsql/client';
import type { Task, CreateTaskInput, UpdateTaskInput, UpdateTaskAIInput, ListTasksParams, PaginatedTasks } from '../../types.js';
import type { TaskStatus } from '../../constants.js';
/**
 * Create a new task. The public_id is auto-assigned by a database trigger.
 */
export declare function createTask(client: Client, data: CreateTaskInput): Promise<Task>;
/**
 * Get a single task by its UUID.
 */
export declare function getTask(client: Client, id: string): Promise<Task | null>;
/**
 * Update a task by its UUID. Only provided fields are updated.
 * Returns the updated Task, or null if not found.
 */
export declare function updateTask(client: Client, id: string, data: UpdateTaskInput): Promise<Task | null>;
/**
 * Delete a task by its UUID.
 * Returns whether the task was found and deleted.
 */
export declare function deleteTask(client: Client, id: string): Promise<{
    deleted: boolean;
}>;
/**
 * List tasks with filtering, sorting, and pagination.
 */
export declare function listTasks(client: Client, params?: ListTasksParams): Promise<PaginatedTasks>;
/**
 * Update AI-specific fields on a task.
 * Keeps AI state changes separate from user-driven updateTask.
 * Returns the updated Task, or null if not found.
 */
/**
 * Bulk update the status of multiple tasks.
 * Each task is individually validated against the transition map.
 * Tasks that don't exist or have invalid transitions are skipped.
 */
export declare function bulkUpdateStatus(client: Client, ids: string[], newStatus: TaskStatus, validTransitions: Record<TaskStatus, readonly TaskStatus[]>): Promise<{
    updated: string[];
    skipped: string[];
}>;
/**
 * Bulk delete multiple tasks by their UUIDs.
 * Uses a single DELETE with IN clause for efficiency.
 */
export declare function bulkDeleteTasks(client: Client, ids: string[]): Promise<{
    deleted: number;
}>;
/**
 * Update AI-specific fields on a task.
 * Keeps AI state changes separate from user-driven updateTask.
 * Returns the updated Task, or null if not found.
 */
export declare function updateTaskAIFields(client: Client, id: string, data: UpdateTaskAIInput): Promise<Task | null>;
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