import {z} from 'zod'

export type GetApiV1ExchangeFundingRateHistoryArgs = {symbol: string, limit?: number | undefined, startTimeAtMillis?: number | undefined, endTimeAtMillis?: number | undefined, page?: number | undefined};

export type GetApiV1ExchangeFundingRateHistoryOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const fundingRateEntry = z.object({symbol: z.string(), fundingTimeAtMillis: z.number().int(), fundingRateE9: z.string()});

export const fundingRateResponse = z.array(fundingRateEntry);

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
};

/**
 * /exchange/fundingRateHistory
 * 
 * GET /v1/exchange/fundingRateHistory
 */
export const getApiV1ExchangeFundingRateHistory = async (args: GetApiV1ExchangeFundingRateHistoryArgs, options?: GetApiV1ExchangeFundingRateHistoryOptions) => {
const {baseUrl = "https://api.sui-staging.bluefin.io", fetch: fetchFn = fetch} = options ?? {}

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

if (args.symbol != null) query.append("symbol", String(args.symbol))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.startTimeAtMillis != null) query.append("startTimeAtMillis", String(args.startTimeAtMillis))
if (args.endTimeAtMillis != null) query.append("endTimeAtMillis", String(args.endTimeAtMillis))
if (args.page != null) query.append("page", String(args.page))

const url = `${baseUrl.replace(/\/+$/, '')}/v1/exchange/fundingRateHistory${query.size > 0 ? `?${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(fundingRateResponse, await res.json())
};