import {z} from 'zod'

export type GetApiV1PlacesArgs = {offset?: number | undefined, limit?: number | undefined, id?: Array<string> | undefined, country?: Array<string> | undefined, location?: string | undefined, q?: string | undefined, type?: (Array<'planet' | 'continent' | 'country' | 'region' | 'county' | 'localadmin' | 'locality' | 'neighbourhood' | 'major' | 'metro' | 'local'>) | undefined};

export type GetApiV1PlacesOptions = {baseUrl?: string | undefined, BearerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const baseLevel = z.enum(["planet", "continent", "country", "region", "county", "localadmin", "locality", "neighbourhood"]);

export const publicGeonamesPlaceResponse = z.object({id: z.string(), type: baseLevel, name: z.string(), county: z.string().optional(), region: z.string().optional(), country: z.string().optional(), country_alpha2: z.string().optional(), country_alpha3: z.string().optional(), location: z.array(z.number())});

export const publicGeonamesPlacesResponse = z.object({count: z.number().int(), next: z.string().nullable().optional(), previous: z.string().nullable().optional(), results: z.array(publicGeonamesPlaceResponse)});

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 Places
 * 
 * GET /v1/places
 */
export const getApiV1Places = async (args: GetApiV1PlacesArgs, options?: GetApiV1PlacesOptions) => {
const {baseUrl = "https://api.predicthq.com", fetch: fetchFn = fetch, BearerAuth} = options ?? {}

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

if (args.offset != null) query.append("offset", String(args.offset))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.id != null) query.append("id", args.id.join(','))
if (args.country != null) query.append("country", args.country.join(','))
if (args.location != null) query.append("location", String(args.location))
if (args.q != null) query.append("q", String(args.q))
if (args.type != null) query.append("type", args.type.join(','))
if (BearerAuth !== undefined) headers.set('authorization', `Bearer ${BearerAuth}`)

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