import {z} from 'zod'

export type CodeGeneratorSettings = {validCharacters: Array<string>, couponPattern: string};

export type NewCouponCreationJob = {usageLimit: number, discountLimit?: number | undefined, reservationLimit?: number | undefined, startDate?: string | undefined, expiryDate?: string | undefined, numberOfCoupons: number, couponSettings?: CodeGeneratorSettings | undefined, attributes: Record<string, never>, isReservationMandatory?: boolean | undefined};

export type CreateApiV1ApplicationsApplicationIdCampaignsCampaignIdCouponsAsyncArgs = {applicationId: number, campaignId: number, body: NewCouponCreationJob};

export type CreateApiV1ApplicationsApplicationIdCampaignsCampaignIdCouponsAsyncOptions = {baseUrl?: string | undefined, managerAuth?: string | undefined, fetch?: typeof fetch | undefined};

export const asyncCouponCreationResponse = z.object({batchId: z.string()});

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 coupons asynchronously
 * 
 * POST /v1/applications/{applicationId}/campaigns/{campaignId}/coupons_async
 * 
 * Also accepts auth: management_key
 */
export const createApiV1ApplicationsApplicationIdCampaignsCampaignIdCouponsAsync = async (args: CreateApiV1ApplicationsApplicationIdCampaignsCampaignIdCouponsAsyncArgs, options?: CreateApiV1ApplicationsApplicationIdCampaignsCampaignIdCouponsAsyncOptions) => {
const {baseUrl = "https://yourbaseurl.talon.one", fetch: fetchFn = fetch, managerAuth} = options ?? {}

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

if (managerAuth !== undefined) headers.set("Authorization", managerAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/applications/${encodeURIComponent(String(args.applicationId))}/campaigns/${encodeURIComponent(String(args.campaignId))}/coupons_async${query.size > 0 ? `?${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(asyncCouponCreationResponse, await res.json())
};