import {z} from 'zod'

export type GetApiApplicationsIdStatusArgs = {id: string};

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

export const applicationComponentMessage = z.object({content: z.string().optional(), severity: z.string().optional()});

export const applicationComponent = z.object({probed_addresses: z.array(z.string()).optional(), description: z.string().optional(), messages: z.array(applicationComponentMessage).optional(), type: z.string().optional(), status: z.string().optional()});

export const applicationProbeResult = z.object({address: z.string().optional(), result: z.string().optional(), response_time: z.number().optional(), redirect_location: z.string().optional(), success: z.boolean().optional()});

export const applicationCheckResult = z.object({url: z.string().optional(), components: z.array(applicationComponent).optional(), probe_results: z.array(applicationProbeResult).optional()});

export const applicationStatus = z.array(applicationCheckResult);

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 the current status of all components related to an application.
 * 
 * GET /applications/{id}/status
 */
export const getApiApplicationsIdStatus = async (args: GetApiApplicationsIdStatusArgs, options?: GetApiApplicationsIdStatusOptions) => {
const {baseUrl = "https://api.webscale.com/v2", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/applications/${encodeURIComponent(String(args.id))}/status${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(applicationStatus, await res.json())
};