import {z} from 'zod'

export type ExtraData = {[key: string]: string};

export type PspPassthroughData = {[key: string]: string};

export type Amount = string;

export type Currency = string;

export type TaxDetails = Array<{type?: string | undefined, amount?: Amount | undefined, rate?: Amount | undefined, code?: string | undefined, taxId?: string | undefined, applied?: string | undefined, exemptionCode?: string | undefined}>;

export type Items = Array<{identification?: string | undefined, name?: string | undefined, description?: string | undefined, quantity?: (number | string) | undefined, price?: (number | string) | undefined, currency?: Currency | undefined, l2l3Data?: ({type?: string | undefined, unit?: string | undefined, unitPrice?: Amount | undefined, discount?: Amount | undefined, discountRate?: Amount | undefined, shippingAmount?: Amount | undefined, taxAmount?: Amount | undefined, taxRate?: Amount | undefined, commodityCode?: string | undefined, taxDetails?: TaxDetails | undefined}) | undefined, extraData?: ExtraData | undefined}>;

export type Splits = Array<{identification?: string | undefined, amount?: number | undefined, currency?: Currency | undefined, sellerMerchantGuid?: string | undefined, sellerMerchantExternalId?: string | undefined, commissionFee?: ({amount?: number | undefined, currency?: Currency | undefined}) | undefined}>;

export type L2L3Data = {taxAmount?: Amount | undefined, vatRegistrationNumber?: string | undefined, nationalTaxIncluded?: string | undefined, discountAmount?: Amount | undefined, commodityCode?: string | undefined, freightAmount?: Amount | undefined, freightTaxAmount?: Amount | undefined, dutyAmount?: Amount | undefined, taxDetails?: TaxDetails | undefined};

export type Refund = {merchantTransactionId: string, additionalId1?: string | undefined, additionalId2?: string | undefined, extraData?: ExtraData | undefined, pspPassthroughData?: PspPassthroughData | undefined, merchantMetaData?: string | undefined, referenceUuid: string, amount: Amount, currency: Currency, callbackUrl?: string | undefined, transactionToken?: string | undefined, description?: string | undefined, items?: Items | undefined, splits?: Splits | undefined, l2l3Data?: L2L3Data | undefined};

export type CreateApiTransactionApiKeyRefundArgs = {apiKey: string, body: Refund};

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

export const country = z.string();

export const returnCardData = z.object({_TYPE: z.literal("cardData").optional(), type: z.string().optional(), firstName: z.string().optional(), lastName: z.string().optional(), country: country.optional(), cardHolder: z.string().optional(), expiryMonth: z.string().optional(), expiryYear: z.string().optional(), binDigits: z.string().optional(), firstSixDigits: z.string().optional(), lastFourDigits: z.string().optional(), fingerprint: z.string().optional(), binBrand: z.string().optional(), binBank: z.string().optional(), binType: z.string().optional(), binLevel: z.string().optional(), binCountry: z.string().optional(), threeDSecure: z.string().optional(), eci: z.string().optional(), merchantAdviceCode: z.string().optional(), parsedMerchantAdviceCode: z.string().optional(), schemeTransactionIdentifier: z.string().optional()});

export const returnPhoneData = z.object({_TYPE: z.literal("phoneData").optional(), phoneNumber: z.string().optional(), country: country.optional(), operator: z.string().optional()});

export const date = z.string();

export const returnIbanData = z.object({_TYPE: z.literal("ibanData").optional(), accountOwner: z.string().optional(), iban: z.string().optional(), bic: z.string().optional(), mandateId: z.string().optional(), mandateDate: date.optional(), bankName: z.string().optional(), bankBranchName: z.string().optional(), country: country.optional()});

export const returnWalletData = z.object({_TYPE: z.literal("walletData").optional(), walletReferenceId: z.string().optional(), walletOwner: z.string().optional(), walletType: z.string().optional()});

export const returnData = z.discriminatedUnion("_TYPE", [returnCardData, returnPhoneData, returnIbanData, returnWalletData]);

export const scheduleStatus = z.enum(["ACTIVE", "PAUSED", "CANCELLED", "ERROR", "CREATE-PENDING"]);

export const dateTimeZone = z.string();

export const scheduleData = z.object({scheduleId: z.string().optional(), scheduleStatus: scheduleStatus.optional(), scheduledAt: dateTimeZone.optional(), merchantMetaData: z.string().optional()});

export const customerProfileData = z.object({profileGuid: z.string().optional(), customerIdentification: z.string().max(36).optional(), markAsPreferred: z.boolean().optional()});

export const extraData = z.record(z.string(), z.string());

export const amount = z.string();

export const currency = z.string();

export const transactionResponse = z.object({success: z.boolean().optional(), uuid: z.string().optional(), purchaseId: z.string().optional(), returnType: z.enum(["FINISHED", "REDIRECT", "HTML", "PENDING", "ERROR", "PENDING_DCC"]).optional(), redirectType: z.enum(["iframe", "fullpage", "3ds"]).optional(), redirectUrl: z.string().max(255).optional(), redirectQRCode: z.string().optional(), htmlContent: z.string().optional(), paymentDescriptor: z.string().optional(), paymentMethod: z.string().optional(), returnData: returnData.optional(), scheduleData: scheduleData.optional(), customerProfileData: customerProfileData.optional(), riskCheckData: z.object({riskCheckResult: z.enum(["APPROVED", "DECLINED", "REVIEW"]).optional(), riskScore: z.number().optional(), threeDSecureRequired: z.boolean().optional()}).optional(), errors: z.array(z.object({errorMessage: z.string().optional(), errorCode: z.number().int().optional(), adapterMessage: z.string().optional(), adapterCode: z.string().optional()})).optional(), adapterMessage: z.string().optional(), adapterCode: z.string().optional(), extraData: extraData.optional(), dccData: z.object({uuid: z.string().optional(), originalAmount: amount.optional(), originalCurrency: currency.optional(), convertedAmount: amount.optional(), convertedCurrency: currency.optional(), conversionRate: z.number().optional(), disclaimer: z.string().optional()}).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
};

/**
 * Process a refund
 * 
 * POST /transaction/{apiKey}/refund
 */
export const createApiTransactionApiKeyRefund = async (args: CreateApiTransactionApiKeyRefundArgs, options?: CreateApiTransactionApiKeyRefundOptions) => {
const {baseUrl = "https://secure.tillpayments.com/api/v3", fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

const url = `${baseUrl.replace(/\/+$/, '')}/transaction/${encodeURIComponent(String(args.apiKey))}/refund${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(transactionResponse, await res.json())
};