import {z} from 'zod'

export type GetApiV1AccountsAccountIdPaymentsEstimateFeeAmountArgs = {account_id: string, amount: number};

export type GetApiV1AccountsAccountIdPaymentsEstimateFeeAmountOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const currency = z.enum(["AED", "USD", "JOD", "EGP", "SAR", "GBP", "EUR", "HKD", "CNH", "SGD"]);

export const estimateFeeResponse = z.object({account_id: z.string(), amount_with_fee: z.number().int().gte(0), currency: currency, estimated_at: z.string(), fee_amount: z.number().int().gte(0), instructed_amount: z.number().int().gte(0)});

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
};

/**
 * Estimate the fee for an outbound payment
 * 
 * GET /v1/accounts/{account_id}/payments/estimate-fee/{amount}
 */
export const getApiV1AccountsAccountIdPaymentsEstimateFeeAmount = async (args: GetApiV1AccountsAccountIdPaymentsEstimateFeeAmountArgs, options?: GetApiV1AccountsAccountIdPaymentsEstimateFeeAmountOptions) => {
const {baseUrl = "https://auth-sandbox.fuse.me", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/v1/accounts/${encodeURIComponent(String(args.account_id))}/payments/estimate-fee/${encodeURIComponent(String(args.amount))}${query.size > 0 ? `?${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(estimateFeeResponse, await res.json())
};