import { z } from "zod";
import type { Field } from "../types";
export type Filter = "eq" | "ne" | "gt" | "gte" | "lt" | "lte" | "search";
export type FilterTuple = readonly [Filter, ...Filter[]];
export interface FilterValue {
    filters: FilterTuple;
    schema: z.ZodTypeAny;
}
export type InternalFilterMap<FieldT extends Field = Field> = Record<FieldT, FilterValue>;
export type FilterMap<FieldT extends Field = Field> = Partial<InternalFilterMap<FieldT>>;
export type FilterSchema<MapT extends InternalFilterMap> = {
    [K in keyof MapT]: z.ZodOptional<z.ZodEffects<z.ZodOptional<z.ZodObject<Record<MapT[K]["filters"][number], z.ZodOptional<z.ZodEffects<z.ZodOptional<z.ZodArray<MapT[K]["schema"]>>>>>>>>>;
};
/**
 * Creates a Zod schema for JSON:API filters.
 *
 * @example
 * <embedex source="packages/example-nestjs/examples/query.ts">
 *
 * ```ts
 * import { booleanString } from "@clipboard-health/contract-core";
 * import {
 *   cursorPaginationQuery,
 *   fieldsQuery,
 *   type FilterMap,
 *   filterQuery,
 *   includeQuery,
 *   sortQuery,
 * } from "@clipboard-health/json-api-nestjs";
 * import { z } from "zod";
 *
 * import type {
 *   ArticleAttributeFields,
 *   UserAttributeFields,
 *   UserIncludeFields,
 * } from "../src/contract";
 *
 * const articleFields = ["title"] as const satisfies readonly ArticleAttributeFields[];
 * const userFields = ["age", "dateOfBirth"] as const satisfies readonly UserAttributeFields[];
 * const userIncludeFields = [
 *   "articles",
 *   "articles.comments",
 * ] as const satisfies readonly UserIncludeFields[];
 * const userFilterMap = {
 *   age: {
 *     filters: ["eq", "gt"],
 *     schema: z.coerce.number().int().positive().max(125),
 *   },
 *   dateOfBirth: {
 *     filters: ["gte"],
 *     schema: z.coerce.date().min(new Date("1900-01-01")).max(new Date()),
 *   },
 *   isActive: {
 *     filters: ["eq"],
 *     schema: booleanString,
 *   },
 * } as const satisfies FilterMap<UserAttributeFields>;
 *
 * /**
 *  * Disclaimer: Just because JSON:API supports robust querying doesn’t mean your service should
 *  * implement them as they may require database indexes, which have a cost. **Implement only access
 *  * patterns required by clients.**
 *  *
 *  * The spec says that if clients provide fields the server doesn’t support, it **MUST** return 400
 *  * Bad Request, hence the `.strict()`.
 *  *\/
 * export const query = z
 *   .object({
 *     ...cursorPaginationQuery(),
 *     ...fieldsQuery({ article: articleFields, user: userFields }),
 *     ...filterQuery(userFilterMap),
 *     ...sortQuery(userFields),
 *     ...includeQuery(userIncludeFields),
 *   })
 *   .strict();
 * ```
 *
 * </embedex>
 *
 * @see {@link https://jsonapi.org/recommendations/#filtering JSON:API filtering}
 * @see {@link https://discuss.jsonapi.org/t/share-propose-a-filtering-strategy/257 JSON:API filtering strategy}
 */
export declare function filterQuery<const MapT extends InternalFilterMap>(parameters: Readonly<MapT>): {
    filter: z.ZodOptional<z.ZodObject<FilterSchema<MapT>, "strict", z.ZodTypeAny, z.objectUtil.addQuestionMarks<z.baseObjectOutputType<FilterSchema<MapT>>, any> extends infer T ? { [k in keyof T]: T[k]; } : never, z.baseObjectInputType<FilterSchema<MapT>> extends infer T_1 ? { [k in keyof T_1]: T_1[k]; } : never>>;
};