import {z} from 'zod'

export type GetApiLangPlacesAutosuggestArgs = {lang: string, name: string, radius: number, lon: number, lat: number, src_geom?: ('osm' | 'wikidata' | 'snow' | 'cultura.ru' | 'rosnedra') | undefined, src_attr?: ('osm' | 'wikidata' | 'snow' | 'cultura.ru' | 'rosnedra' | 'user') | undefined, kinds?: string | undefined, rate?: ('1' | '2' | '3' | '1h' | '2h' | '3h') | undefined, format?: ('json' | 'geojson' | 'count') | undefined, props?: ('base' | 'address') | undefined, limit?: number | undefined};

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

export const simpleSuggestFeature = z.object({xid: z.string(), name: z.string(), highlighted_name: z.string(), kinds: z.string(), osm: z.string().optional(), wikidata: z.string().optional(), dist: z.number().optional(), point: z.object({lon: z.number().optional(), lat: z.number().optional()})});

export const getApiLangPlacesAutosuggestResponse = z.array(simpleSuggestFeature);

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
};

/**
 * Method returns suggestions for search term closest to the selected point optionally filtered by parameters. Only basic information is include in response: xid, name, kinds, osm, wikidata of each object. Depending on the chosen format, the response is either a simple array of objects (with a smaller volume) or an object in GeoJSON format.
 * 
 * GET /{lang}/places/autosuggest
 */
export const getApiLangPlacesAutosuggest = async (args: GetApiLangPlacesAutosuggestArgs, options?: GetApiLangPlacesAutosuggestOptions) => {
const {baseUrl = "https://api.opentripmap.com/0.1", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args.name != null) query.append("name", String(args.name))
if (args.radius != null) query.append("radius", String(args.radius))
if (args.lon != null) query.append("lon", String(args.lon))
if (args.lat != null) query.append("lat", String(args.lat))
if (args.src_geom != null) query.append("src_geom", String(args.src_geom))
if (args.src_attr != null) query.append("src_attr", String(args.src_attr))
if (args.kinds != null) query.append("kinds", String(args.kinds))
if (args.rate != null) query.append("rate", String(args.rate))
if (args.format != null) query.append("format", String(args.format))
if (args.props != null) query.append("props", String(args.props))
if (args.limit != null) query.append("limit", String(args.limit))
if (ApiKeyAuth !== undefined) query.set("apikey", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/${encodeURIComponent(String(args.lang))}/places/autosuggest${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(getApiLangPlacesAutosuggestResponse, await res.json())
};