import {z} from 'zod'

export type RefundPaymentRequest = {paymentTransactionId: string, conversationId?: string | undefined, ip?: string | undefined, locale?: ('tr' | 'en') | undefined, price: unknown, currency?: string | undefined};

export type CreateApiPaymentRefundArgs = {Authorization: string, 'Content-Type': string, body: RefundPaymentRequest};

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

export const refundPaymentResponse = z.object({status: z.enum(["success", "failure"]).optional(), locale: z.enum(["tr", "en"]).optional(), systemTime: z.number().int().optional(), conversationId: z.string().optional(), paymentId: z.string().optional(), paymentTransactionId: z.string().optional(), price: z.unknown(), currency: z.string().optional(), authCode: z.string().optional(), hostReference: z.string().optional(), refundHostReference: z.string().optional(), retryable: z.boolean().optional(), signature: 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
};

/**
 * Refund
 * 
 * POST /payment/refund
 */
export const createApiPaymentRefund = async (args: CreateApiPaymentRefundArgs, options?: CreateApiPaymentRefundOptions) => {
const {baseUrl = "https://sandbox-api.iyzipay.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args.Authorization != null) headers.set("Authorization", String(args.Authorization))
if (args['Content-Type'] != null) headers.set("Content-Type", String(args['Content-Type']))

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