import {z} from 'zod'

export type GetApiV1DefaultBanksBankIdKnowledgeBaseSearchArgs = {bank_id: string, q: string, limit?: number | undefined, tags?: (Array<string> | null) | undefined, tags_match?: ('any' | 'all' | 'any_strict' | 'all_strict' | 'exact') | undefined, tag_groups?: (string | null) | undefined, authorization?: (string | null) | undefined};

export type GetApiV1DefaultBanksBankIdKnowledgeBaseSearchOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const knowledgePageSearchResult = z.object({id: z.string(), name: z.string(), mental_model_id: z.string().nullable().optional(), source_query: z.string().nullable().optional(), snippet: z.string(), score: z.number(), updated_at: z.string().nullable().optional()});

export const knowledgePageSearchResponse = z.object({results: z.array(knowledgePageSearchResult), total: z.number().int()});

export const validateResponse = async <Output>(
  schema: {
    readonly '~standard': {
      readonly validate: (value: unknown) => ({ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }) | Promise<{ readonly value: Output; readonly issues?: undefined } | { readonly issues: ReadonlyArray<{ readonly message: string; readonly path?: ReadonlyArray<PropertyKey | { readonly key: PropertyKey }> | undefined }> }>
    }
  },
  value: unknown
): Promise<Output> => {
  const result = await schema['~standard'].validate(value)

  if (result.issues !== undefined) {
    const detail = result.issues
      .map(({ message, path }) =>
        path?.length
          ? `${path.map((segment) => String(typeof segment === 'object' ? segment.key : segment)).join('.')}: ${message}`
          : message
      )
      .join('; ')

    throw new Error(`Response does not match the schema: ${detail}`, { cause: { issues: result.issues } })
  }

  return result.value
};

/**
 * Hybrid search over knowledge pages (BM25 + vector)
 * 
 * GET /v1/default/banks/{bank_id}/knowledge-base/search
 */
export const getApiV1DefaultBanksBankIdKnowledgeBaseSearch = async (args: GetApiV1DefaultBanksBankIdKnowledgeBaseSearchArgs, options: GetApiV1DefaultBanksBankIdKnowledgeBaseSearchOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json")

if (args.q != null) query.append("q", String(args.q))
if (args.limit != null) query.append("limit", String(args.limit))
for (const item of args.tags ?? []) query.append("tags", String(item))
if (args.tags_match != null) query.append("tags_match", String(args.tags_match))
if (args.tag_groups != null) query.append("tag_groups", String(args.tag_groups))
if (args.authorization != null) headers.set("authorization", String(args.authorization))

const url = `${baseUrl.replace(/\/+$/, '')}/v1/default/banks/${encodeURIComponent(String(args.bank_id))}/knowledge-base/search${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "GET", headers})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(knowledgePageSearchResponse, await res.json())
};