import {z} from 'zod'

export type ExternalCustomerReference = string;

export type CreateApiPaymentsAcquirersArgs = {body: {name: string, description?: string | undefined, default?: boolean | undefined, configurations: Array<{network: 'visa' | 'mastercard' | 'american-express' | 'discover' | 'jcb' | 'unionpay', bin: string, acquirerMerchantIdentifier: string, country: unknown}>, externalCustomerReference?: ExternalCustomerReference | undefined}};

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

export const acquirerConfiguration = z.object({id: z.string(), name: z.string(), description: z.string().optional(), default: z.boolean(), configurations: z.array(z.object({network: z.enum(["visa", "mastercard", "american-express", "discover", "jcb", "unionpay"]), bin: z.string().min(6).max(11), acquirerMerchantIdentifier: z.string(), state: z.string(), country: 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 an Acquirer
 * 
 * POST /payments/acquirers
 */
export const createApiPaymentsAcquirers = async (args: CreateApiPaymentsAcquirersArgs, options?: CreateApiPaymentsAcquirersOptions) => {
const {baseUrl = "https://api.evervault.com", fetch: fetchFn = fetch, ApiKey} = options ?? {}

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

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

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