import {z} from 'zod'

export type Webhook = {callback: string, events: Array<'user' | 'user.login' | 'user.create' | 'user.delete' | 'user.update' | 'user.update.email' | 'user.update.email.create' | 'user.update.email.delete' | 'user.update.email.primary' | 'user.update.username' | 'user.update.username.create' | 'user.update.username.delete' | 'user.update.username.update' | 'email.send'>};

export type CreateApiWebhooksArgs = {body: Webhook};

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

export const databaseWebhookEvent = z.object({id: z.string().optional(), event: z.enum(["user", "user.login", "user.create", "user.delete", "user.update", "user.update.email", "user.update.email.create", "user.update.email.delete", "user.update.email.primary", "user.update.username", "user.update.username.create", "user.update.username.delete", "user.update.username.update", "email.send"]).optional()});

export const databaseWebhook = z.object({id: z.string().optional(), callback: z.string().optional(), enabled: z.boolean().optional(), failures: z.number().int().gte(0).optional(), expires_at: z.string().optional(), events: z.array(databaseWebhookEvent).optional(), created_at: z.string().optional(), updated_at: z.string().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 a new database webhook
 * 
 * POST /webhooks
 */
export const createApiWebhooks = async (args: CreateApiWebhooksArgs, options?: CreateApiWebhooksOptions) => {
const {baseUrl = "https://.hanko.io/admin", fetch: fetchFn = fetch, BearerApiKeyAuth} = options ?? {}

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

if (BearerApiKeyAuth !== undefined) headers.set('authorization', `Bearer ${BearerApiKeyAuth}`)

const url = `${baseUrl.replace(/\/+$/, '')}/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(databaseWebhook, await res.json())
};