import {z} from 'zod'

export type GetApiV1PlacesNearbyArgs = {place?: string | undefined, latitude?: number | undefined, longitude?: number | undefined, types?: (Array<'city' | 'airport' | 'state' | 'district' | 'hotel'>) | undefined, locale?: string | undefined, pageSize?: number | undefined};

export type GetApiV1PlacesNearbyOptions = {baseUrl?: string | undefined, oauth2?: string | undefined, fetch?: typeof fetch | undefined};

export const getApiV1PlacesNearbyResponse = z.object({results: z.array(z.object({id: z.union([z.number(), z.string()]).optional(), code: z.string().optional(), name: z.string(), type: z.string(), cityCode: z.string().optional(), latitude: z.number().optional(), longitude: z.number().optional()})), metadata: z.object({resultCount: z.number().int().gte(0).lte(9007199254740991), totalCandidates: z.number().int().gte(0).lte(9007199254740991), hasMore: z.boolean(), origin: z.object({latitude: z.number(), longitude: z.number(), resolvedFrom: z.enum(["place", "coordinates"]), code: z.string().optional(), name: z.string().optional()})})});

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
};

/**
 * Airports and cities near a point
 * 
 * GET /v1/places/nearby
 * 
 * Also accepts auth: bearerAuth
 */
export const getApiV1PlacesNearby = async (args: GetApiV1PlacesNearbyArgs, options?: GetApiV1PlacesNearbyOptions) => {
const {baseUrl = "https://api.wego.com", fetch: fetchFn = fetch, oauth2} = options ?? {}

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

if (args.place != null) query.append("place", String(args.place))
if (args.latitude != null) query.append("latitude", String(args.latitude))
if (args.longitude != null) query.append("longitude", String(args.longitude))
for (const item of args.types ?? []) query.append("types", String(item))
if (args.locale != null) query.append("locale", String(args.locale))
if (args.pageSize != null) query.append("pageSize", String(args.pageSize))
if (oauth2 !== undefined) headers.set('authorization', `Bearer ${oauth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/places/nearby${query.size > 0 ? `?${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(getApiV1PlacesNearbyResponse, await res.json())
};