import {z} from 'zod'

export type GetApiWebhookSubscriptionsArgs = {limit?: number | undefined, lastEvaluated?: string | undefined, orderBy?: string | undefined};

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

export const getApiWebhookSubscriptionsResponse = z.object({webhookSubscriptions: z.array(z.object({subscriberId: z.string().optional(), webhookSubscriptionId: z.string().optional(), endpointUrl: z.string().optional(), version: z.literal("2025-02-01").optional(), subscriptions: z.array(z.object({resourceType: z.enum(["review", "loyalty_adjustment_transaction", "loyalty_customer", "loyalty_earning_transaction", "loyalty_redemption_transaction"]).optional(), topic: z.enum(["create", "update", "delete"]).optional()})).optional(), isEnabled: z.boolean().optional(), dateCreated: z.string().optional(), dateModified: z.string().optional()})).optional(), nextUrl: 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
};

/**
 * List Webhook Subscriptions
 * 
 * GET /webhook_subscriptions
 */
export const getApiWebhookSubscriptions = async (args: GetApiWebhookSubscriptionsArgs, options?: GetApiWebhookSubscriptionsOptions) => {
const {baseUrl = "https://api.okendo.io/enterprise", fetch: fetchFn = fetch, basic} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.lastEvaluated != null) query.append("lastEvaluated", String(args.lastEvaluated))
if (args.orderBy != null) query.append("orderBy", String(args.orderBy))
if (basic !== undefined) headers.set('authorization', `Basic ${btoa(`${basic.username}:${basic.password}`)}`)

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