/**
 * TASK-0125 — RAG workspace search DTO (zod; validated by `ZodValidate`).
 *
 * Body: `{ query, context? }` (the spec's query-path contract). `query` is
 * the question (1–1000 chars); `context.types` is the search page's type
 * chips (optional metadata filter — see the recorded chunk-vs-types conflict
 * in the task file: the kNN leg cannot filter chunk docs by their parent's
 * public type, so `types` narrows the keyword leg + the de-dup only).
 */
import { z } from "zod";
import { SEARCH_TYPES } from "@factory/search";

const isSearchType = (v: string): boolean => (SEARCH_TYPES as readonly string[]).includes(v);

export const RagSearchDto = z.object({
  /** The question (the answer is streamed; the query is embedded + BM25'd). */
  query: z.string().trim().min(1, "query is required").max(1000),
  /** Optional metadata filters from the search page's chips. */
  context: z
    .object({
      /** Restrict to these content types (the public SearchType set). */
      types: z.array(z.string().refine(isSearchType, { message: "unknown content type" })).min(1).optional(),
    })
    .optional(),
});
export type RagSearchInput = z.infer<typeof RagSearchDto>;