import {z} from 'zod'

export type GetApiMetricsRoadNetworkSegmentSpeedArgs = {place: string, fromTimestamp: string, toTimestamp: string, objectTypes?: Array<string> | undefined, segmentInfo: boolean};

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

export const detailedSegmentSpeed = z.object({roadSegments: z.array(z.object({id: z.string().max(10000), direction: z.enum(["N", "S", "W", "E"]), start: z.object({lat: z.number().gte(-90).lte(90), lng: z.number().gte(-180).lte(180), alt: z.number().gte(0).lte(100000).optional()}), end: z.object({lat: z.number().gte(-90).lte(90), lng: z.number().gte(-180).lte(180), alt: z.number().gte(0).lte(100000).optional()}), points: z.array(z.object({lat: z.number().gte(-90).lte(90), lng: z.number().gte(-180).lte(180), alt: z.number().gte(0).lte(100000)})), speed: z.number().gte(0).lte(1000), objectCount: z.number().int().gte(0).lte(100000)}))});

export const segmentSpeed = z.object({roadSegments: z.array(z.object({id: z.string().max(10000), speed: z.number().gte(0).lte(1000), objectCount: z.number().int().gte(0).lte(100000)}))});

export const getApiMetricsRoadNetworkSegmentSpeedResponse = z.union([detailedSegmentSpeed, segmentSpeed]);

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
};

/**
 * Get road-segment speeds
 * 
 * GET /metrics/road-network/segment-speed
 */
export const getApiMetricsRoadNetworkSegmentSpeed = async (args: GetApiMetricsRoadNetworkSegmentSpeedArgs, options?: GetApiMetricsRoadNetworkSegmentSpeedOptions) => {
const {baseUrl = "https://ai.nvidia.com/api/v3.3/analytics", fetch: fetchFn = fetch} = 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.fromTimestamp != null) query.append("fromTimestamp", String(args.fromTimestamp))
if (args.toTimestamp != null) query.append("toTimestamp", String(args.toTimestamp))
for (const item of args.objectTypes ?? []) query.append("objectTypes", String(item))
if (args.segmentInfo != null) query.append("segmentInfo", String(args.segmentInfo))

const url = `${baseUrl.replace(/\/+$/, '')}/metrics/road-network/segment-speed${query.size > 0 ? `?${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(getApiMetricsRoadNetworkSegmentSpeedResponse, await res.json())
};