import {z} from 'zod'

export type GetApiEarliestTimestampArgs = {symbol?: string | undefined, figi?: string | undefined, isin?: string | undefined, cusip?: string | undefined, interval: '1min' | '5min' | '15min' | '30min' | '45min' | '1h' | '2h' | '4h' | '8h' | '1day' | '1week' | '1month', exchange?: string | undefined, mic_code?: string | undefined, timezone?: string | undefined};

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

export const getApiEarliestTimestampResponse = z.object({datetime: z.string(), unix_time: z.number().int()});

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
};

/**
 * Earliest timestamp
 * 
 * GET /earliest_timestamp
 * 
 * Also accepts auth: queryParameter
 */
export const getApiEarliestTimestamp = async (args: GetApiEarliestTimestampArgs, options?: GetApiEarliestTimestampOptions) => {
const {baseUrl = "https://api.twelvedata.com", fetch: fetchFn = fetch, authorizationHeader} = 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.figi != null) query.append("figi", String(args.figi))
if (args.isin != null) query.append("isin", String(args.isin))
if (args.cusip != null) query.append("cusip", String(args.cusip))
if (args.interval != null) query.append("interval", String(args.interval))
if (args.exchange != null) query.append("exchange", String(args.exchange))
if (args.mic_code != null) query.append("mic_code", String(args.mic_code))
if (args.timezone != null) query.append("timezone", String(args.timezone))
if (authorizationHeader !== undefined) headers.set("Authorization", authorizationHeader)

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