import {z} from 'zod'

export type DistanceOp = {destinations: Array<string>, max_cost_usd?: (string | null) | undefined, mode?: ('driving' | 'straightline') | undefined, op: 'distance', origins: Array<string>, units?: ('miles' | 'km') | undefined};

export type NearestOp = {filters?: ({[key: string]: number | string | Array<string>} | null) | undefined, max_cost_usd?: (string | null) | undefined, mode?: ('driving' | 'straightline') | undefined, n?: number | undefined, op: 'nearest', origin: string, radius_m?: (number | null) | undefined, return?: ('candidates' | 'count') | undefined, set: string};

export type ScreenOp = {anchors: Array<string>, max_cost_usd?: (string | null) | undefined, max_minutes: number, min_minutes?: (number | null) | undefined, op: 'screen', origins: Array<string>};

export type LaborShedOp = {estimate?: boolean | undefined, include?: Array<'demographics'> | undefined, max_cost_usd?: (string | null) | undefined, minutes: number, op: 'labor_shed', origin: string};

export type CreateApiV1ProximityArgs = {body: DistanceOp | NearestOp | ScreenOp | LaborShedOp};

export type CreateApiV1ProximityOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const createApiV1ProximityResponse = z.unknown();

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
};

/**
 * Compute Endpoint
 * 
 * POST /v1/proximity
 */
export const createApiV1Proximity = async (args: CreateApiV1ProximityArgs, options?: CreateApiV1ProximityOptions) => {
const {baseUrl = "https://api.mireye.com", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/proximity${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(createApiV1ProximityResponse, await res.json())
};