import {z} from 'zod'

export type GetApiApiV1UtilsMagneticGridArgs = {timestamp: string, resolution_lon?: number | undefined, resolution_lat?: number | undefined, min_latitude?: number | undefined, altitude_km?: number | undefined, no_cache?: boolean | undefined};

export type GetApiApiV1UtilsMagneticGridOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const magneticGridHemisphere = z.object({vertical: z.array(z.array(z.array(z.number()))), horizontal: z.array(z.array(z.array(z.number())))});

export const magneticGrid = z.object({timestamp: z.string(), north: magneticGridHemisphere, south: magneticGridHemisphere});

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
};

/**
 * Retrieve geomagnetic coordinate grid
 * 
 * GET /api/v1/utils/magnetic_grid
 */
export const getApiApiV1UtilsMagneticGrid = async (args: GetApiApiV1UtilsMagneticGridArgs, options: GetApiApiV1UtilsMagneticGridOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.timestamp != null) query.append("timestamp", String(args.timestamp))
if (args.resolution_lon != null) query.append("resolution_lon", String(args.resolution_lon))
if (args.resolution_lat != null) query.append("resolution_lat", String(args.resolution_lat))
if (args.min_latitude != null) query.append("min_latitude", String(args.min_latitude))
if (args.altitude_km != null) query.append("altitude_km", String(args.altitude_km))
if (args.no_cache != null) query.append("no_cache", String(args.no_cache))

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