import {z} from 'zod'

export type CreateApiV1WikiSearchBatchArgs = {queries: Array<string>, neighbor_chunks?: (number | null) | undefined, n_documents?: (number | null) | undefined, full_articles?: (boolean | null) | undefined, hybrid_search?: (boolean | null) | undefined, string_guarantee?: (Array<string> | null) | undefined, diversify?: (number | null) | undefined, include_main_section?: (boolean | null) | undefined, has_wikidata?: (boolean | null) | undefined};

export type CreateApiV1WikiSearchBatchOptions = {baseUrl?: string | undefined, APIKey?: string | undefined, fetch?: typeof fetch | undefined};

export const cirrusMetadata = z.object({create_timestamp: z.string().nullable().optional(), wikibase_item: z.string().nullable().optional(), version: z.number().int().nullable().optional(), popularity_score: z.number().nullable().optional(), text_bytes: z.number().int().nullable().optional(), heading: z.array(z.string()).nullable().optional(), incoming_links: z.number().int().nullable().optional(), outgoing_links: z.number().int().nullable().optional()});

export const wikiResponseDictItem = z.object({content: z.string(), title: z.string(), url: z.string(), categories: z.array(z.string()), timestamp: z.string(), cirrus_metadata: cirrusMetadata.nullable().optional(), point_id: z.string().nullable().optional(), point_id_main_section: z.string().nullable().optional(), point_id_full_page: z.string().nullable().optional(), has_main_section: z.boolean().nullable().optional()});

export const wikiSearchResponse = z.object({documents: z.array(wikiResponseDictItem)});

export const wikiBatchSearchResponse = z.object({results: z.array(wikiSearchResponse)});

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
};

/**
 * Batch search for wiki chunks
 * 
 * POST /v1/wiki/search/batch
 */
export const createApiV1WikiSearchBatch = async (args: CreateApiV1WikiSearchBatchArgs, options?: CreateApiV1WikiSearchBatchOptions) => {
const {baseUrl = "https://api.asknews.app", fetch: fetchFn = fetch, APIKey} = options ?? {}

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

for (const item of args.queries ?? []) query.append("queries", String(item))
if (args.neighbor_chunks != null) query.append("neighbor_chunks", String(args.neighbor_chunks))
if (args.n_documents != null) query.append("n_documents", String(args.n_documents))
if (args.full_articles != null) query.append("full_articles", String(args.full_articles))
if (args.hybrid_search != null) query.append("hybrid_search", String(args.hybrid_search))
for (const item of args.string_guarantee ?? []) query.append("string_guarantee", String(item))
if (args.diversify != null) query.append("diversify", String(args.diversify))
if (args.include_main_section != null) query.append("include_main_section", String(args.include_main_section))
if (args.has_wikidata != null) query.append("has_wikidata", String(args.has_wikidata))
if (APIKey !== undefined) headers.set("Authorization", APIKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/wiki/search/batch${query.size > 0 ? `?${query}` : ''}`

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

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

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