import {z} from 'zod'

export type RailProduct = 'us' | 'swift' | 'eu' | 'uae' | 'uk' | 'br' | 'mx' | 'co' | 'ar' | 'au' | 'ng' | 'ca' | 'dk' | 'no' | 'pl' | 'tr' | 'il' | 'sa' | 'bo' | 'cl' | 'cr' | 'do' | 'gt' | 'hn' | 'jm' | 'eg' | 'sl' | 'tz' | 'ug' | 'waemu' | 'zm' | 'bd' | 'cn' | 'hk' | 'in' | 'id' | 'jp' | 'my' | 'pk' | 'ph' | 'kr' | 'th' | 'vn' | 'card';

export type GetApiBanksProductRateArgs = {product: RailProduct, 'X-Hevn-Account'?: (string | null) | undefined};

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

export const railRateView = z.object({currency: z.string(), rate: z.string().nullable().optional(), fixedFee: z.string().nullable().optional(), fixedFeeCurrency: 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
};

/**
 * Retrieve the receiving conversion rate
 * 
 * GET /banks/{product}/rate
 */
export const getApiBanksProductRate = async (args: GetApiBanksProductRateArgs, options: GetApiBanksProductRateOptions) => {
const {baseUrl, fetch: fetchFn = fetch, HTTPBearer} = options ?? {}

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

if (args['X-Hevn-Account'] != null) headers.set("X-Hevn-Account", String(args['X-Hevn-Account']))
if (HTTPBearer !== undefined) headers.set('authorization', `Bearer ${HTTPBearer}`)

const url = `${baseUrl.replace(/\/+$/, '')}/banks/${encodeURIComponent(String(args.product))}/rate${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(railRateView, await res.json())
};