import {z} from 'zod'

export type GetApiApiV1LoanProductsIdFloatingRatesArgs = {id: string, productVersionId: string, asOf: string};

export type GetApiApiV1LoanProductsIdFloatingRatesOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const floatingRatePeriodHumaBody = z.object({annualRateBps: z.number().int(), effectiveDate: z.string(), endDate: z.string().optional(), id: z.string()});

export const floatingRateTableInnerHumaBody = z.object({id: z.string(), name: z.string(), periods: z.array(floatingRatePeriodHumaBody).nullable()});

export const floatingRateTermsHumaBody = z.object({fixedAnnualRateBps: z.number().int(), floatingRateTableId: z.string().optional(), floatingSpreadBps: z.number().int(), rateMode: z.string(), requiresFloatingRate: z.boolean(), versionId: z.string()});

export const floatingRateTableHumaBody = z.object({period: floatingRatePeriodHumaBody.optional(), rateMode: z.string(), table: floatingRateTableInnerHumaBody.optional(), terms: floatingRateTermsHumaBody.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
};

/**
 * Get loan product floating rate table
 * 
 * GET /api/v1/loan-products/{id}/floating-rates
 */
export const getApiApiV1LoanProductsIdFloatingRates = async (args: GetApiApiV1LoanProductsIdFloatingRatesArgs, options?: GetApiApiV1LoanProductsIdFloatingRatesOptions) => {
const {baseUrl = "https://identity.sandbox.lerian.net", fetch: fetchFn = fetch} = options ?? {}

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

if (args.productVersionId != null) query.append("productVersionId", String(args.productVersionId))
if (args.asOf != null) query.append("asOf", String(args.asOf))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/loan-products/${encodeURIComponent(String(args.id))}/floating-rates${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(floatingRateTableHumaBody, await res.json())
};