import {z} from 'zod'

export type PaymentRequestAmount = {currency: string, value: number};

export type PaymentAccountType = 'IBAN' | 'BBAN' | 'BG' | 'PG';

export type PaymentAccount = {accountNumber: string, accountType: PaymentAccountType, bic?: (string | null) | undefined, currencyCode?: (string | null) | undefined};

export type PaymentCreditor = {account: PaymentAccount, message?: (string | null) | undefined, name: string};

export type PaymentDebtor = {account: PaymentAccount, message?: (string | null) | undefined, name?: (string | null) | undefined};

export type PaymentRequestRemittanceInformationType = 'UNSTRUCTURED' | 'OCR';

export type PaymentRequestRemittanceInformation = {value: string, type: PaymentRequestRemittanceInformationType};

export type CreatePaymentRequest = {amount: PaymentRequestAmount, creditor: PaymentCreditor, debtor?: PaymentDebtor | undefined, executionDate?: (number | null) | undefined, remittanceInformation: PaymentRequestRemittanceInformation, region: string, paymentProductId: string, paymentTemplateId?: (string | null) | undefined};

export type CreateApiV1PaymentsArgs = {body: CreatePaymentRequest};

export type CreateApiV1PaymentsOptions = {baseUrl: string, Bearer?: string | undefined, fetch?: typeof fetch | undefined};

export const paymentRequestAmount = z.object({currency: z.string(), value: z.number()});

export const paymentAccountType = z.enum(["IBAN", "BBAN", "BG", "PG"]);

export const paymentAccount = z.object({accountNumber: z.string(), accountType: paymentAccountType, bic: z.string().nullable().optional(), currencyCode: z.string().nullable().optional()});

export const paymentCreditor = z.object({account: paymentAccount, message: z.string().nullable().optional(), name: z.string()});

export const paymentDebtor = z.object({account: paymentAccount, message: z.string().nullable().optional(), name: z.string().nullable().optional()});

export const paymentRequestRemittanceInformationType = z.enum(["UNSTRUCTURED", "OCR"]);

export const paymentRequestRemittanceInformation = z.object({value: z.string(), type: paymentRequestRemittanceInformationType});

export const paymentRequestModel = z.object({id: z.string(), clientId: z.string().nullable().optional(), ClientAccess: z.string().nullable().optional(), status: z.string().nullable().optional(), amount: paymentRequestAmount, creditor: paymentCreditor, debtor: paymentDebtor.optional(), executionDate: z.number().int().nullable().optional(), remittanceInformation: paymentRequestRemittanceInformation, region: z.string(), paymentProductId: z.string(), paymentTemplateId: z.string().nullable().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
};

/**
 * Creating a Payment Request.
 * 
 * POST /v1/payments
 */
export const createApiV1Payments = async (args: CreateApiV1PaymentsArgs, options: CreateApiV1PaymentsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, Bearer} = options ?? {}

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

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/payments${query.size > 0 ? `?${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(paymentRequestModel, await res.json())
};