import {z} from 'zod'

export type WebhookEventType = 'alerts.triggered' | 'alerts.resolved';

export type GetApiV1WebhookEndpointsArgs = {enabled?: boolean | undefined, event_type?: WebhookEventType | undefined};

export type GetApiV1WebhookEndpointsOptions = {baseUrl?: string | undefined, polyApiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const webhookEventType = z.enum(["alerts.triggered", "alerts.resolved"]);

export const webhookEndpoint = z.object({id: z.string(), name: z.string().min(1).max(255), url: z.string(), enabled: z.boolean(), event_types: z.array(webhookEventType), headers: z.record(z.string(), z.string()).optional(), timeout_ms: z.number().int().gte(1000).lte(30000), created_at: z.string(), updated_at: z.string()});

export const webhookEndpointListResponse = z.object({data: z.array(webhookEndpoint)});

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 webhook endpoints
 * 
 * GET /v1/webhook-endpoints
 */
export const getApiV1WebhookEndpoints = async (args: GetApiV1WebhookEndpointsArgs, options?: GetApiV1WebhookEndpointsOptions) => {
const {baseUrl = "https://api.us.poly.ai", fetch: fetchFn = fetch, polyApiKey} = options ?? {}

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

if (args.enabled != null) query.append("enabled", String(args.enabled))
if (args.event_type != null) query.append("event_type", String(args.event_type))
if (polyApiKey !== undefined) headers.set("X-API-KEY", polyApiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/webhook-endpoints${query.size > 0 ? `?${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(webhookEndpointListResponse, await res.json())
};