import {z} from 'zod'

export type GetApiApiV1IndexIndexIdQueryArgs = {apikey: string, index_id: number, query_string: string, offset: number, length: number, include_uncommitted: boolean, enable_empty_query: boolean};

export type GetApiApiV1IndexIndexIdQueryOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const resultSource = z.enum(["Lexical", "Vector", "Hybrid"]);

export const result = z.object({doc_id: z.number().int().gte(0), score: z.number(), field_id: z.number().int().gte(0), chunk_id: z.number().int().gte(0), level_id: z.number().int().gte(0), shard_id: z.number().int().gte(0), cluster_id: z.number().int().gte(0), cluster_score: z.number(), vector_score: z.number(), lexical_score: z.number(), source: resultSource});

export const searchResult = z.object({original_query: z.string(), query: z.string(), query_terms: z.array(z.string()), offset: z.number().int().gte(0), length: z.number().int().gte(0), count: z.number().int().gte(0), count_total: z.number().int().gte(0), observed_vector_count: z.number().int().gte(0), observed_cluster_count: z.number().int().gte(0), results: z.array(result), documents: z.array(z.record(z.string(), z.unknown())), facets: z.record(z.string(), z.array(z.array(z.unknown()))), suggestions: z.array(z.string()), time: z.number().int().gte(0)});

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
};

/**
 * Query Index
 * 
 * GET /api/v1/index/{index_id}/query
 */
export const getApiApiV1IndexIndexIdQuery = async (args: GetApiApiV1IndexIndexIdQueryArgs, options?: GetApiApiV1IndexIndexIdQueryOptions) => {
const {baseUrl = "http://127.0.0.1", fetch: fetchFn = fetch} = options ?? {}

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

if (args.apikey != null) headers.set("apikey", String(args.apikey))
if (args.query_string != null) query.append("query_string", String(args.query_string))
if (args.offset != null) query.append("offset", String(args.offset))
if (args.length != null) query.append("length", String(args.length))
if (args.include_uncommitted != null) query.append("include_uncommitted", String(args.include_uncommitted))
if (args.enable_empty_query != null) query.append("enable_empty_query", String(args.enable_empty_query))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/index/${encodeURIComponent(String(args.index_id))}/query${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(searchResult, await res.json())
};