import {z} from 'zod'

export type Date = {year?: number | undefined, month?: number | undefined, day?: number | undefined};

export type GetTradeStatsRequest = {symbol?: string | undefined, startTime?: string | undefined, endTime?: string | undefined, bars?: number | undefined, startTradeDate?: Date | undefined, endTradeDate?: Date | undefined};

export type CreateApiV1ReportTradesStatsArgs = {body: GetTradeStatsRequest};

export type CreateApiV1ReportTradesStatsOptions = {baseUrl?: string | undefined, XPMAccessKey?: string | undefined, XPMTimestamp?: string | undefined, XPMSignature?: string | undefined, fetch?: typeof fetch | undefined};

export const tradeStats = z.object({first: z.string().optional(), last: z.string().optional(), high: z.string().optional(), low: z.string().optional(), totalTradeCount: z.string().optional(), clearedTradeCount: z.string().optional(), volume: z.string().optional(), clearedVolume: z.string().optional(), notional: z.string().optional(), clearedNotional: z.string().optional()});

export const getTradeStatsResponse = z.object({stats: tradeStats.optional(), bars: z.array(tradeStats).optional(), barStartTime: z.array(z.string()).optional(), barEndTime: z.array(z.string()).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 trade stats
 * 
 * POST /v1/report/trades/stats
 */
export const createApiV1ReportTradesStats = async (args: CreateApiV1ReportTradesStatsArgs, options?: CreateApiV1ReportTradesStatsOptions) => {
const {baseUrl = "https://api.polymarket.us", fetch: fetchFn = fetch, XPMAccessKey, XPMTimestamp, XPMSignature} = options ?? {}

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

if (XPMAccessKey !== undefined) headers.set("X-PM-Access-Key", XPMAccessKey)
if (XPMTimestamp !== undefined) headers.set("X-PM-Timestamp", XPMTimestamp)
if (XPMSignature !== undefined) headers.set("X-PM-Signature", XPMSignature)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/report/trades/stats${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(getTradeStatsResponse, await res.json())
};