import { ComputedRef, Ref } from 'vue';
import { GroupItem } from '../types';
export type GroupAssignmentZone = 'zone1' | 'zone2';
export type GroupAssignmentSource<T> = T | Ref<T> | ComputedRef<T> | (() => T);
export interface GroupAssignmentState {
    group1: string[];
    group2: string[];
}
export interface UseGroupAssignmentOptions {
    groups: GroupAssignmentSource<readonly GroupItem[]>;
    group1: GroupAssignmentSource<readonly string[]>;
    group2: GroupAssignmentSource<readonly string[]>;
    label1?: GroupAssignmentSource<string | null | undefined>;
    label2?: GroupAssignmentSource<string | null | undefined>;
    minPerGroup?: GroupAssignmentSource<number | null | undefined>;
}
export interface UseGroupAssignmentReturn {
    unassignedGroups: ComputedRef<GroupItem[]>;
    zone1Groups: ComputedRef<GroupItem[]>;
    zone2Groups: ComputedRef<GroupItem[]>;
    zone1Count: ComputedRef<number>;
    zone2Count: ComputedRef<number>;
    isValid: ComputedRef<boolean>;
    validationMessage: ComputedRef<string | null>;
    getZoneForGroup: (groupName: string) => GroupAssignmentZone | null;
    assignToZone: (groupName: string, zone: GroupAssignmentZone) => GroupAssignmentState;
    removeFromZone: (groupName: string, zone: GroupAssignmentZone) => GroupAssignmentState;
    clearAll: () => GroupAssignmentState;
}
/**
 * Shared two-zone group assignment model for control/treatment style workflows.
 *
 * @deprecated Scheduled for removal in MINT 1.4; no SDK replacement.
 */
export declare function useGroupAssignment(options: UseGroupAssignmentOptions): UseGroupAssignmentReturn;