import {z} from 'zod'

export type GetApiV3PaymentsIdArgs = {id: string};

export type GetApiV3PaymentsIdOptions = {baseUrl?: string | undefined, apiKeyPaymentProfile?: string | undefined, fetch?: typeof fetch | undefined};

export const currency = z.literal("EUR");

export const merchantPaymentStatus = z.enum(["PENDING", "IDENTIFIED", "AUTHORIZED", "AUTHORIZATION_FAILED", "SUCCEEDED", "FAILED", "CANCELLED", "EXPIRED", "PENDING_MERCHANT_ACKNOWLEDGEMENT", "VOIDED"]);

export const paymentCreditorResponse = z.object({profileId: z.string().optional(), merchantId: z.string().optional(), name: z.string().optional(), iban: z.string().optional(), identifyCallbackUrl: z.string().optional(), callbackUrl: z.string().optional()});

export const link = z.object({href: z.string()});

export const links = z.object({self: link, deeplink: link, qrcode: link, cancel: link.optional(), refund: link.optional(), checkout: link.optional()});

export const getPaymentResponse = z.object({paymentId: z.string().min(24).max(24), createdAt: z.string(), expireAt: z.string(), succeededAt: z.string().optional(), currency: currency, status: merchantPaymentStatus, creditor: paymentCreditorResponse, debtor: z.object({name: z.string().optional(), iban: z.string().optional()}).optional(), amount: z.number().int(), description: z.string().optional(), message: z.string().optional(), reference: z.string().optional(), bulkId: z.string().optional(), _links: links.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 a payment by id
 * 
 * GET /v3/payments/{id}
 * 
 * Also accepts auth: JWS-Request-Signature-Payment
 */
export const getApiV3PaymentsId = async (args: GetApiV3PaymentsIdArgs, options?: GetApiV3PaymentsIdOptions) => {
const {baseUrl = "https://merchant.api.preprod.bancontact.net", fetch: fetchFn = fetch, apiKeyPaymentProfile} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v3/payments/${encodeURIComponent(String(args.id))}${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(getPaymentResponse, await res.json())
};