import {z} from 'zod'

export type GetApiV1MarketsSlugBookArgs = {slug: string};

export type GetApiV1MarketsSlugBookOptions = {baseUrl?: string | undefined, XPMAccessKey?: string | undefined, XPMTimestamp?: string | undefined, XPMSignature?: string | undefined, fetch?: typeof fetch | undefined};

export const gatewayTypesV1Amount = z.object({value: z.string(), currency: z.string()});

export const sharedMarketDataV1BookEntry = z.object({px: gatewayTypesV1Amount.optional(), qty: z.string().optional()});

export const sharedMarketDataV1MarketState = z.enum(["MARKET_STATE_OPEN", "MARKET_STATE_PREOPEN", "MARKET_STATE_SUSPENDED", "MARKET_STATE_EXPIRED", "MARKET_STATE_TERMINATED", "MARKET_STATE_HALTED", "MARKET_STATE_MATCH_AND_CLOSE_AUCTION"]);

export const sharedMarketDataV1SettlementPriceCalculationMethod = z.enum(["SETTLEMENT_PRICE_CALCULATION_METHOD_VWAP_TIER_1", "SETTLEMENT_PRICE_CALCULATION_METHOD_VWAP_TIER_2_RULE_1", "SETTLEMENT_PRICE_CALCULATION_METHOD_VWAP_TIER_2_RULE_2", "SETTLEMENT_PRICE_CALCULATION_METHOD_VWAP_TIER_2_RULE_3", "SETTLEMENT_PRICE_CALCULATION_METHOD_VWAP_TIER_2_RULE_4", "SETTLEMENT_PRICE_CALCULATION_METHOD_EVENT_TIER_1", "SETTLEMENT_PRICE_CALCULATION_METHOD_EVENT_TIER_2", "SETTLEMENT_PRICE_CALCULATION_METHOD_EVENT_TIER_3", "SETTLEMENT_PRICE_CALCULATION_METHOD_EVENT_TIER_4", "SETTLEMENT_PRICE_CALCULATION_METHOD_OVERRIDE", "SETTLEMENT_PRICE_CALCULATION_METHOD_VWAP_TIER_2_RULE_5", "SETTLEMENT_PRICE_CALCULATION_METHOD_VWAP_TIER_2_RULE_6", "SETTLEMENT_PRICE_CALCULATION_METHOD_VWAP_TIER_2_RULE_7", "SETTLEMENT_PRICE_CALCULATION_METHOD_VWAP_TIER_2_RULE_8"]);

export const sharedMarketDataV1PriceSample = z.object({longPx: gatewayTypesV1Amount.optional(), shortPx: gatewayTypesV1Amount.optional(), ts: z.string().optional()});

export const sharedMarketDataV1MarketStats = z.object({openPx: gatewayTypesV1Amount.optional(), closePx: gatewayTypesV1Amount.optional(), lowPx: gatewayTypesV1Amount.optional(), highPx: gatewayTypesV1Amount.optional(), lastTradePx: gatewayTypesV1Amount.optional(), indicativeOpenPx: gatewayTypesV1Amount.optional(), settlementPx: gatewayTypesV1Amount.optional(), sharesTraded: z.string().optional(), notionalTraded: gatewayTypesV1Amount.optional(), lastTradeQty: z.string().optional(), openInterest: z.string().optional(), settlementPreliminaryFlag: z.boolean().optional(), openSetTime: z.string().optional(), closeSetTime: z.string().optional(), highSetTime: z.string().optional(), lowSetTime: z.string().optional(), lastTradeSetTime: z.string().optional(), indicativeOpenSetTime: z.string().optional(), settlementSetTime: z.string().optional(), openInterestSetTime: z.string().optional(), notionalSetTime: z.string().optional(), settlementPriceCalculationMethod: sharedMarketDataV1SettlementPriceCalculationMethod.optional(), tradingReferencePx: gatewayTypesV1Amount.optional(), tradingReferenceSetTime: z.string().optional(), currentPx: gatewayTypesV1Amount.optional(), lastPriceSample: sharedMarketDataV1PriceSample.optional()});

export const sharedMarketDataV1MarketData = z.object({marketSlug: z.string().optional(), bids: z.array(sharedMarketDataV1BookEntry).optional(), offers: z.array(sharedMarketDataV1BookEntry).optional(), state: sharedMarketDataV1MarketState.optional(), stats: sharedMarketDataV1MarketStats.optional(), transactTime: z.string().optional()});

export const gatewayMarketV1GetMarketBookResponse = z.object({marketData: sharedMarketDataV1MarketData.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 Market Book
 * 
 * GET /v1/markets/{slug}/book
 */
export const getApiV1MarketsSlugBook = async (args: GetApiV1MarketsSlugBookArgs, options?: GetApiV1MarketsSlugBookOptions) => {
const {baseUrl = "https://api.polymarket.us", fetch: fetchFn = fetch, XPMAccessKey, XPMTimestamp, XPMSignature} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
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/markets/${encodeURIComponent(String(args.slug))}/book${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(gatewayMarketV1GetMarketBookResponse, await res.json())
};