import {z} from 'zod'

export type GetApiGatewayV1MarketOnchainIndicatorArgs = {symbol: 'BTC' | 'ETH', metric: 'nupl' | 'sopr' | 'mvrv' | 'puell-multiple' | 'nvm' | 'nvt' | 'nvt-golden-cross' | 'exchange-flows/inflow' | 'exchange-flows/outflow' | 'exchange-flows/netflow' | 'exchange-flows/reserve', granularity?: 'day' | undefined, from?: string | undefined, to?: string | undefined, exchange?: ('all_exchange' | 'spot_exchange' | 'derivative_exchange' | 'coinbase_prime' | 'binance' | 'coinbase_advanced' | 'okx' | 'kraken' | 'bybit' | 'bitstamp' | 'gemini' | 'bitget' | 'kucoin' | 'bitfinex' | 'gate_io' | 'deribit' | 'mexc' | 'htx_global' | 'bitflyer' | 'coinone' | 'bithumb' | 'upbit' | 'hashkey_exchange') | undefined};

export type GetApiGatewayV1MarketOnchainIndicatorOptions = {baseUrl?: string | undefined, AccessToken?: string | undefined, fetch?: typeof fetch | undefined};

export const marketMetricPoint = z.object({exchange: z.string().optional(), exchange_name: z.string().optional(), metric: z.string().optional(), project_id: z.string().optional(), symbol: z.string().optional(), timestamp: z.number().int(), value: z.number()});

export const offsetMeta = z.object({cached: z.boolean(), credits_used: z.number().int(), empty_reason: z.string().optional(), has_more: z.boolean().optional(), limit: z.number().int(), offset: z.number().int(), total: z.number().int().optional(), watermark: z.number().int().optional()});

export const dataResponseMarketMetricPoint = z.object({$schema: z.string().optional(), data: z.array(marketMetricPoint).nullable(), meta: offsetMeta});

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
};

/**
 * On-Chain Indicator
 * 
 * GET /gateway/v1/market/onchain-indicator
 */
export const getApiGatewayV1MarketOnchainIndicator = async (args: GetApiGatewayV1MarketOnchainIndicatorArgs, options?: GetApiGatewayV1MarketOnchainIndicatorOptions) => {
const {baseUrl = "https://api.asksurf.ai", fetch: fetchFn = fetch, AccessToken} = options ?? {}

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

if (args.symbol != null) query.append("symbol", String(args.symbol))
if (args.metric != null) query.append("metric", String(args.metric))
if (args.granularity != null) query.append("granularity", String(args.granularity))
if (args.from != null) query.append("from", String(args.from))
if (args.to != null) query.append("to", String(args.to))
if (args.exchange != null) query.append("exchange", String(args.exchange))
if (AccessToken !== undefined) headers.set('authorization', `Bearer ${AccessToken}`)

const url = `${baseUrl.replace(/\/+$/, '')}/gateway/v1/market/onchain-indicator${query.size > 0 ? `?${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(dataResponseMarketMetricPoint, await res.json())
};