import {z} from 'zod'

export type GetApiListenerArgs = {filters?: string | undefined};

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

export const tracingConfig = z.object({ingress: z.boolean().optional(), request_headers_for_tags: z.array(z.string()).optional()});

export const listener = z.object({name: z.string(), ip: z.string().optional(), port: z.number().int(), protocol: z.enum(["http", "http2", "http_auto", "tcp"]), domain_keys: z.array(z.string()).optional(), tracing_config: tracingConfig.optional(), zone_key: z.string(), listener_key: z.string(), checksum: z.string()});

export const multiListenerResult = z.object({result: z.array(listener).optional()});

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
};

/**
 * list listeners
 * 
 * GET /listener
 */
export const getApiListener = async (args: GetApiListenerArgs, options?: GetApiListenerOptions) => {
const {baseUrl = "https://api.turbinelabs.io/v1.0", fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (args.filters != null) query.append("filters", String(args.filters))
if (apiKey !== undefined) headers.set("Authorization", apiKey)

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