import {z} from 'zod'

export type GetApiStatusArgs = {api_key: string, customer_id: string, requestor_id: string};

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

export const sUSHIServiceStatus = z.object({Description: z.string().optional(), Service_Active: z.boolean(), Registry_URL: z.string().optional(), Note: z.string().optional(), Alerts: z.array(z.object({Date_Time: z.string().optional(), Alert: z.string().optional()})).optional()});

export const getApiStatusResponse = z.array(sUSHIServiceStatus);

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
};

/**
 * This resource returns the current status of the reporting service supported by this API.
 * 
 * GET /status
 */
export const getApiStatus = async (args: GetApiStatusArgs, options?: GetApiStatusOptions) => {
const {baseUrl = "https://api.clarivate.com/api/counter/r5", fetch: fetchFn = fetch, key} = options ?? {}

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

if (args.api_key != null) query.append("api_key", String(args.api_key))
if (args.customer_id != null) query.append("customer_id", String(args.customer_id))
if (args.requestor_id != null) query.append("requestor_id", String(args.requestor_id))
if (key !== undefined) headers.set("X-ApiKey", key)

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