import { Ref } from 'vue';
import { ScheduleEvent } from '../types/components';
export type DragType = 'create' | 'resize-top' | 'resize-bottom' | 'move';
export interface DragState {
    type: DragType;
    event?: ScheduleEvent;
    startDate: Date;
    startY: number;
    currentY: number;
    dayIndex: number;
    currentDayIndex: number;
}
export interface GhostEvent {
    start: Date;
    end: Date;
    dayIndex: number;
    style: Record<string, string>;
}
export interface UseScheduleDragOptions {
    slotDuration: Ref<number>;
    dayStartHour: Ref<number>;
    dayEndHour: Ref<number>;
    readonly: Ref<boolean>;
    slotHeight: Ref<number>;
    blockedSlots?: Ref<{
        start: string;
        end: string;
        label?: string;
    }[]>;
    onCreateComplete?: (start: Date, end: Date) => void;
    onMoveComplete?: (event: ScheduleEvent, newStart: Date, newEnd: Date) => void;
    onResizeComplete?: (event: ScheduleEvent, newStart: Date, newEnd: Date) => void;
}
/** Handles pointer-driven create, move, and resize drag interactions for the ScheduleCalendar grid. */
export declare function useScheduleDrag(options: UseScheduleDragOptions): {
    isDragging: Ref<boolean, boolean>;
    dragState: Ref<{
        type: DragType;
        event?: {
            id: string;
            start: string;
            end: string;
            title: string;
            color?: string | undefined;
            status?: import('..').ScheduleEventStatus | undefined;
            draggable?: boolean | undefined;
            resizable?: boolean | undefined;
            metadata?: Record<string, unknown> | undefined;
        } | undefined;
        startDate: Date;
        startY: number;
        currentY: number;
        dayIndex: number;
        currentDayIndex: number;
    } | null, DragState | {
        type: DragType;
        event?: {
            id: string;
            start: string;
            end: string;
            title: string;
            color?: string | undefined;
            status?: import('..').ScheduleEventStatus | undefined;
            draggable?: boolean | undefined;
            resizable?: boolean | undefined;
            metadata?: Record<string, unknown> | undefined;
        } | undefined;
        startDate: Date;
        startY: number;
        currentY: number;
        dayIndex: number;
        currentDayIndex: number;
    } | null>;
    ghost: import('vue').ComputedRef<GhostEvent | null>;
    startCreate: (date: Date, y: number, dayIndex: number) => void;
    startMove: (event: ScheduleEvent, y: number, dayIndex: number) => void;
    startResize: (event: ScheduleEvent, edge: "top" | "bottom", y: number, dayIndex: number) => void;
    nudgeEvent: (event: ScheduleEvent, direction: -1 | 1, mode?: "move" | "resize") => boolean;
};