import {z} from 'zod'

export type GetApiApiV1MarketDataOhlcArgs = {market: string, token_id?: string | undefined, outcome_index?: number | undefined, interval: '1s' | '10s' | '1m' | '3m' | '30m' | '2h' | '6h' | '12h' | '1d', start_ts?: number | undefined, end_ts?: number | undefined, limit?: number | undefined};

export type GetApiApiV1MarketDataOhlcOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const internalHandlerOHLCDataPoint = z.object({c: z.number().optional(), closeCollateral: z.number().optional(), closeMintedQuantity: z.number().optional(), h: z.number().optional(), l: z.number().optional(), o: z.number().optional(), openCollateral: z.number().optional(), openMintedQuantity: z.number().optional(), payoutClose: z.number().optional(), payoutHigh: z.number().optional(), payoutLow: z.number().optional(), payoutMid: z.number().optional(), payoutOpen: z.number().optional(), t: z.number().int().optional(), v: z.number().optional()});

export const internalHandlerOHLCResponse = z.object({data: z.array(internalHandlerOHLCDataPoint).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 OHLC candlestick data
 * 
 * GET /api/v1/market-data/ohlc
 */
export const getApiApiV1MarketDataOhlc = async (args: GetApiApiV1MarketDataOhlcArgs, options?: GetApiApiV1MarketDataOhlcOptions) => {
const {baseUrl = "https://rest.ft.42.space", fetch: fetchFn = fetch} = options ?? {}

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

if (args.market != null) query.append("market", String(args.market))
if (args.token_id != null) query.append("token_id", String(args.token_id))
if (args.outcome_index != null) query.append("outcome_index", String(args.outcome_index))
if (args.interval != null) query.append("interval", String(args.interval))
if (args.start_ts != null) query.append("start_ts", String(args.start_ts))
if (args.end_ts != null) query.append("end_ts", String(args.end_ts))
if (args.limit != null) query.append("limit", String(args.limit))

const url = `${baseUrl.replace(/\/+$/, '')}/api/v1/market-data/ohlc${query.size > 0 ? `?${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(internalHandlerOHLCResponse, await res.json())
};