import {z} from 'zod'

export type GetApiQuotesArgs = {markets: Array<'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 type GetApiQuotesOptions = {baseUrl?: string | undefined, OAuth2?: 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 orderSide = z.enum(["BUY", "SELL"]);

export const quote = z.object({id: z.string(), market: market, side: orderSide, price: z.string(), base_asset: z.string(), quote_asset: z.string(), created_at: z.string(), expires_at: z.string()});

export const listQuotesResponse = z.object({items: z.array(quote).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 Quotes
 * 
 * GET /quotes
 */
export const getApiQuotes = async (args: GetApiQuotesArgs, options?: GetApiQuotesOptions) => {
const {baseUrl = "https://api.paxos.com/v2", fetch: fetchFn = fetch, OAuth2} = options ?? {}

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

for (const item of args.markets ?? []) query.append("markets", String(item))
if (OAuth2 !== undefined) headers.set('authorization', `Bearer ${OAuth2}`)

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