import { Core, type Task, DEFAULT_TASK_STATUSES } from '@backlog-md/core';
import type { KanbanPanelActions, PanelEventEmitter } from '../../../types';
import { type Span } from '../../../telemetry';
/** Per-column pagination state */
export interface ColumnState {
    tasks: Task[];
    total: number;
    hasMore: boolean;
    isLoadingMore: boolean;
}
/**
 * Status column identifiers - now using actual status values directly
 * This eliminates the need for status-to-column mapping
 */
export type StatusColumn = typeof DEFAULT_TASK_STATUSES[keyof typeof DEFAULT_TASK_STATUSES];
/** All status columns in order for rendering */
export declare const STATUS_COLUMNS: StatusColumn[];
/** Status-based column state (computed from source data) */
export interface StatusColumnState {
    tasks: Task[];
    count: number;
}
/** Active tasks pagination state */
export interface ActiveTasksState {
    total: number;
    loaded: number;
    hasMore: boolean;
    isLoadingMore: boolean;
}
export interface UseKanbanDataResult {
    tasks: Task[];
    isLoading: boolean;
    error: string | null;
    /** Per-status column pagination state */
    columnStates: Map<StatusColumn, ColumnState>;
    /** Load more tasks for a specific status column */
    loadMore: (status: StatusColumn) => Promise<void>;
    refreshData: () => Promise<void>;
    updateTaskStatus: (taskId: string, newStatus: string) => Promise<void>;
    /** Status columns: To Do, In Progress, Done */
    statusColumns: StatusColumn[];
    /** Tasks grouped by status (To Do, In Progress, Done) */
    tasksByStatus: Map<StatusColumn, StatusColumnState>;
    /** Total tasks pagination state */
    totalTasksState: ActiveTasksState;
    /** Load more tasks */
    loadMoreTasks: () => Promise<void>;
    /** Move task to a new status column (optimistic update - no persistence) */
    moveTaskOptimistic: (taskId: string, toColumn: StatusColumn) => void;
    /** Find a task by ID */
    getTaskById: (taskId: string) => Task | undefined;
}
interface UseKanbanDataOptions {
    /** Shared Core instance from useBacklogCore (required) */
    core: Core | null;
    /** Actions for file operations */
    actions?: KanbanPanelActions;
    /** Number of tasks to load per page (default: 20) */
    tasksLimit?: number;
    /** Event emitter for panel events */
    events?: PanelEventEmitter;
    /** Parent span for context propagation (e.g., board.session) */
    parentSpan?: Span;
}
/**
 * Hook for managing kanban board data with lazy loading
 *
 * Uses 3-column view based on task status: To Do, In Progress, Done.
 * Only loads tasks from the tasks/ directory.
 *
 * Requires a shared Core instance from useBacklogCore.
 */
export declare function useKanbanData(options: UseKanbanDataOptions): UseKanbanDataResult;
export {};
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