import {z} from 'zod'

export type WebhookEndpointBearerTokenAuth = {type: 'bearerToken', token: string};

export type WebhookEndpointCustomHeadersAuth = {type: 'customHeaders'};

export type WebhookEndpointAuth = WebhookEndpointBearerTokenAuth | WebhookEndpointCustomHeadersAuth;

export type WebhookCustomHeaders = {[key: string]: string};

export type CreateWebhookEndpointRequest = {name?: string | undefined, url: string, auth: WebhookEndpointAuth, customHeaders?: (WebhookCustomHeaders | null) | undefined};

export type CreateApiV2WebhookEndpointsArgs = {body: CreateWebhookEndpointRequest};

export type CreateApiV2WebhookEndpointsOptions = {baseUrl?: string | undefined, httpBasic?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const webhookCustomHeaders = z.record(z.string(), z.string());

export const webhookEndpoint = z.object({id: z.string(), name: z.string().optional(), url: z.string(), authType: z.enum(["bearerToken", "customHeaders"]), customHeaders: webhookCustomHeaders.nullable().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 endpoint
 * 
 * POST /v2/webhook-endpoints
 */
export const createApiV2WebhookEndpoints = async (args: CreateApiV2WebhookEndpointsArgs, options?: CreateApiV2WebhookEndpointsOptions) => {
const {baseUrl = "https://api.prod.goaugment.com", fetch: fetchFn = fetch, httpBasic} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v2/webhook-endpoints${query.size > 0 ? `?${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(webhookEndpoint, await res.json())
};