import {z} from 'zod'

export type GetApiEventsEventRefArgs = {Authorization: string, eventRef: string};

export type GetApiEventsEventRefOptions = {baseUrl: string, OAuth2?: string | undefined, fetch?: typeof fetch | undefined};

export const eventGetResponse = z.object({id: z.string().optional(), accountRef: z.string().optional(), type: z.string().optional(), defaultLocale: z.string().optional(), customer: z.object({firstName: z.string().optional(), lastName: z.string().optional(), email: z.string(), address: z.string().optional(), mobile: z.string().optional(), reference: z.string().optional()}).optional(), channel: z.object({id: z.string(), type: z.enum(["user_defined", "etrusted"]).optional()}).optional(), tracking: z.object({client: z.string().optional(), medium: z.enum(["API", "WIDGET", "WEB_APP", "MOBILE_APP"]).optional()}).optional(), transaction: z.object({reference: z.string(), date: z.string().optional()}).optional(), estimatedDeliveryDate: z.string().optional(), products: z.array(z.object({gtin: z.string().optional(), imageUrl: z.string().optional(), name: z.string(), mpn: z.string().optional(), sku: z.string(), brand: z.string().optional(), url: z.string()})).optional(), system: z.string().optional(), systemVersion: z.string().optional(), metadata: z.object({}).optional(), createdAt: 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
};

/**
 * Get an event
 * 
 * GET /events/{eventRef}
 */
export const getApiEventsEventRef = async (args: GetApiEventsEventRefArgs, options: GetApiEventsEventRefOptions) => {
const {baseUrl, fetch: fetchFn = fetch, OAuth2} = options ?? {}

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

if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))
if (OAuth2 !== undefined) headers.set('authorization', `Bearer ${OAuth2}`)

const url = `${baseUrl.replace(/\/+$/, '')}/events/${encodeURIComponent(String(args.eventRef))}${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(eventGetResponse, await res.json())
};