import {z} from 'zod'

export type GetApiTrsrvSecdefScheduleArgs = {assetClass: string, symbol: string, exchange?: string | undefined, exchangeFilter?: string | undefined};

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

export const getApiTrsrvSecdefScheduleResponse = z.object({id: z.string().optional(), tradeVenueId: z.string().optional(), schedules: z.array(z.object({clearingCycleEndTime: z.number().int().optional(), tradingScheduleDate: z.number().int().optional(), sessions: z.object({openingTime: z.number().int().optional(), closingTime: z.number().int().optional(), prop: z.string().optional()}).optional(), tradingTimes: z.object({openingTime: z.number().int().optional(), closingTime: z.number().int().optional(), cancelDayOrders: z.string().optional()}).optional()})).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 trading schedule for symbol
 * 
 * GET /trsrv/secdef/schedule
 */
export const getApiTrsrvSecdefSchedule = async (args: GetApiTrsrvSecdefScheduleArgs, options?: GetApiTrsrvSecdefScheduleOptions) => {
const {baseUrl = "http://localhost:5000/v1/api", fetch: fetchFn = fetch} = options ?? {}

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

if (args.assetClass != null) query.append("assetClass", String(args.assetClass))
if (args.symbol != null) query.append("symbol", String(args.symbol))
if (args.exchange != null) query.append("exchange", String(args.exchange))
if (args.exchangeFilter != null) query.append("exchangeFilter", String(args.exchangeFilter))

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