import {z} from 'zod'

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

export const market = z.enum(["ETHEUR", "ETHSGD", "ETHUSD", "BTCEUR", "BTCSGD", "BTCUSD", "PAXGUSD", "BCHUSD", "LTCUSD", "USDPUSD", "LINKUSD", "AAVEUSD", "UNIUSD", "PEPEUSD", "TRUMPUSD", "SHIBUSD", "ARBUSD", "BONKUSD", "ENAUSD", "MNTUSD", "ONDOUSD", "PENGUUSD", "QNTUSD", "RENDERUSD", "SKYUSD", "WIFUSD", "WLDUSD", "DOGEUSD", "AVAXUSD", "SUIUSD", "POLUSD", "XLMUSD", "BNBUSD"]);

export const marketTradingStatus = z.enum(["MARKET_TRADING_STATUS_UNSPECIFIED", "AVAILABLE", "UNAVAILABLE"]);

export const marketStatusReason = z.enum(["MARKET_STATUS_REASON_UNSPECIFIED", "SCHEDULED_MAINTENANCE", "TRADING_SUSPENDED", "UNSCHEDULED_MAINTENANCE"]);

export const maintenanceRecurrence = z.enum(["MAINTENANCE_RECURRENCE_UNSPECIFIED", "NONE", "DAILY", "WEEKLY"]);

export const scheduledMaintenance = z.object({starts_at: z.string().optional(), ends_at: z.string().optional(), recurrence: maintenanceRecurrence.optional()});

export const marketStatus = z.object({buy_status: marketTradingStatus.optional(), buy_reason: marketStatusReason.optional(), sell_status: marketTradingStatus.optional(), sell_reason: marketStatusReason.optional(), updated_at: z.string().optional(), scheduled_maintenance: z.array(scheduledMaintenance).optional()});

export const marketDetails = z.object({market: market.optional(), base_asset: z.string().optional(), quote_asset: z.string().optional(), tick_rate: z.string().optional(), market_status: marketStatus.optional(), min_base_amount: z.string().optional(), min_quote_amount: z.string().optional(), max_base_amount: z.string().optional(), max_quote_amount: z.string().optional()});

export const listMarketsResponse = z.object({markets: z.array(marketDetails).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
};

/**
 * List Markets
 * 
 * GET /markets
 */
export const getApiMarkets = async (options?: GetApiMarketsOptions) => {
const {baseUrl = "https://api.paxos.com/v2", fetch: fetchFn = fetch} = options ?? {}

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

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