import {z} from 'zod'

export type GetApiStreamDspV1LocationsArgs = {authorization: string, Authorization?: string | undefined};

export type GetApiStreamDspV1LocationsOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const address = z.object({address_line_1: z.string(), address_line_2: z.string().optional(), city: z.string(), state: z.string(), postal_code: z.string(), country: z.string()});

export const dspLocation = z.object({provider_id: z.string(), name: z.string(), address: address});

export const getLocationsResponseDto = z.object({locations: z.array(dspLocation)});

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 Locations (Stream –> DSP via OAuth)
 * 
 * GET /stream-dsp/v1/locations
 */
export const getApiStreamDspV1Locations = async (args: GetApiStreamDspV1LocationsArgs, options: GetApiStreamDspV1LocationsOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.authorization != null) headers.set("authorization", String(args.authorization))
if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))

const url = `${baseUrl.replace(/\/+$/, '')}/stream-dsp/v1/locations${query.size > 0 ? `?${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(getLocationsResponseDto, await res.json())
};