import {z} from 'zod'

export type WebhookType = 'EXERCISE' | 'SLEEP' | 'CONTINUOUS_HEART_RATE' | 'SLEEP_WISE_CIRCADIAN_BEDTIME' | 'SLEEP_WISE_ALERTNESS' | 'ACTIVITY_SUMMARY' | 'PHYSICAL_INFORMATION';

export type WebhookRequest = {events: Array<WebhookType>, url: string};

export type CreateApiV3WebhooksArgs = {body: WebhookRequest};

export type CreateApiV3WebhooksOptions = {baseUrl?: string | undefined, Basic?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const webhookType = z.enum(["EXERCISE", "SLEEP", "CONTINUOUS_HEART_RATE", "SLEEP_WISE_CIRCADIAN_BEDTIME", "SLEEP_WISE_ALERTNESS", "ACTIVITY_SUMMARY", "PHYSICAL_INFORMATION"]);

export const createdWebhook = z.object({data: z.object({id: z.string().optional(), events: z.array(webhookType).optional(), url: z.string().optional(), signature_secret_key: z.string().optional()}).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
};

/**
 * Create webhook
 * 
 * POST /v3/webhooks
 */
export const createApiV3Webhooks = async (args: CreateApiV3WebhooksArgs, options?: CreateApiV3WebhooksOptions) => {
const {baseUrl = "https://www.polaraccesslink.com", fetch: fetchFn = fetch, Basic} = options ?? {}

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

if (Basic !== undefined) headers.set('authorization', `Basic ${btoa(`${Basic.username}:${Basic.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/v3/webhooks${query.size > 0 ? `?${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(createdWebhook, await res.json())
};