import {z} from 'zod'

export type DbDataEmbedInputs = Record<string, never>;

export type DbDataVectorValues = Array<number>;

export type DbDataSearchRecordsVector = {values?: DbDataVectorValues | undefined, sparse_values?: Array<number> | undefined, sparse_indices?: Array<number> | undefined};

export type DbDataSearchMatchTerms = {strategy?: string | undefined, terms?: Array<string> | undefined};

export type DbDataSearchRecordsRequest = {query: {top_k: number, filter?: Record<string, never> | undefined, inputs?: DbDataEmbedInputs | undefined, vector?: DbDataSearchRecordsVector | undefined, id?: string | undefined, match_terms?: DbDataSearchMatchTerms | undefined}, fields?: Array<string> | undefined, rerank?: ({model: string, rank_fields: Array<string>, top_n?: number | undefined, parameters?: {[key: string]: unknown} | undefined, query?: string | undefined}) | undefined};

export type CreateApiRecordsNamespacesNamespaceSearchArgs = {'X-Pinecone-Api-Version': string, namespace: string, body: DbDataSearchRecordsRequest};

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

export const dbDataHit = z.object({_id: z.string(), _score: z.number(), fields: z.object({})});

export const dbDataSearchUsage = z.object({read_units: z.number().int().gte(0), embed_total_tokens: z.number().int().gte(0).optional(), rerank_units: z.number().int().gte(0).optional()});

export const dbDataSearchRecordsResponse = z.object({result: z.object({hits: z.array(dbDataHit)}), usage: dbDataSearchUsage});

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
};

/**
 * Search with text
 * 
 * POST /records/namespaces/{namespace}/search
 */
export const createApiRecordsNamespacesNamespaceSearch = async (args: CreateApiRecordsNamespacesNamespaceSearchArgs, options?: CreateApiRecordsNamespacesNamespaceSearchOptions) => {
const {baseUrl = "https://api.pinecone.io", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args['X-Pinecone-Api-Version'] != null) headers.set("X-Pinecone-Api-Version", String(args['X-Pinecone-Api-Version']))
if (ApiKeyAuth !== undefined) headers.set("Api-Key", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/records/namespaces/${encodeURIComponent(String(args.namespace))}/search${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

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

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