import {z} from 'zod'

export type OnboardingCurrency = 'usd' | 'eur' | 'gbp' | 'aed';

export type GetApiV1CustomersCustomerIdOnboardingCurrencyArgs = {customer_id: string, currency: OnboardingCurrency};

export type GetApiV1CustomersCustomerIdOnboardingCurrencyOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

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

export const errorCode = z.enum(["missing_document", "missing_currency_data", "no_shareholders", "insufficient_majority_owership", "shareholder_not_onboarded", "business_registration_date_missing", "invalid_business_registration_date", "business_registration_number_missing", "business_trade_license_expiry_missing", "expired_trade_license", "expired_identification_document", "individual_missing_proof_of_address_document", "business_missing_proof_of_address_document", "invalid_documents", "invalid_customer_name", "invalid_shareholder_name", "invalid_customer_address"]);

export const onboardingError = z.object({code: errorCode, msg: z.string()});

export const onboardingStatus = z.union([z.literal("pending"), z.literal("completed"), z.object({failed: onboardingError})]);

export const onboarding = z.object({currency: currency, customer_id: z.string(), status: onboardingStatus});

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
};

/**
 * Get Customer Onboarding Status for a specific currency
 * 
 * GET /v1/customers/{customer_id}/onboarding/{currency}
 */
export const getApiV1CustomersCustomerIdOnboardingCurrency = async (args: GetApiV1CustomersCustomerIdOnboardingCurrencyArgs, options?: GetApiV1CustomersCustomerIdOnboardingCurrencyOptions) => {
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/customers/${encodeURIComponent(String(args.customer_id))}/onboarding/${encodeURIComponent(String(args.currency))}${query.size > 0 ? `?${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(onboarding, await res.json())
};