import {z} from 'zod'

export type GetApiV1ProductArgs = {order?: ('asc' | 'desc') | undefined, limit?: number | undefined, cursor?: string | undefined, orderBy?: ('createdAt' | 'openInterest' | 'baseTokenName' | 'quoteTokenName') | undefined, ticker?: string | undefined};

export type GetApiV1ProductOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const engineType = z.union([z.literal(0), z.literal(1)]);

export const productDto = z.object({baseTokenAddress: z.string(), baseTokenName: z.string(), blockNumber: z.string(), createdAt: z.number().int(), cumulativeFundingUsd: z.string(), displayTicker: z.string(), engineType: engineType, fundingBaselineApr: z.string(), fundingClampApr: z.string(), fundingMaxApr: z.string(), fundingRate1h: z.string(), fundingUpdatedAt: z.number().int().optional(), id: z.string(), lotSize: z.string(), makerFee: z.string(), maxLeverage: z.number(), maxOpenInterestUsd: z.string(), maxPositionNotionalUsd: z.string(), maxPrice: z.string(), maxQuantity: z.string(), minPrice: z.string(), minQuantity: z.string(), onchainId: z.number().int(), openInterest: z.string(), pythFeedId: z.number().int(), quoteTokenAddress: z.string(), quoteTokenName: z.string(), status: z.enum(["PENDING", "ACTIVE", "DELISTED"]), takerFee: z.string(), tickSize: z.string(), ticker: z.string(), volume24h: z.string()});

export const pageOfProductDtos = z.object({data: z.array(productDto), hasNext: z.boolean(), nextCursor: 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
};

/**
 * Returns a list of all products and its configuration
 * 
 * GET /v1/product
 */
export const getApiV1Product = async (args: GetApiV1ProductArgs, options?: GetApiV1ProductOptions) => {
const {baseUrl = "https://api.ethereal.trade", fetch: fetchFn = fetch} = options ?? {}

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

if (args.order != null) query.append("order", String(args.order))
if (args.limit != null) query.append("limit", String(args.limit))
if (args.cursor != null) query.append("cursor", String(args.cursor))
if (args.orderBy != null) query.append("orderBy", String(args.orderBy))
if (args.ticker != null) query.append("ticker", String(args.ticker))

const url = `${baseUrl.replace(/\/+$/, '')}/v1/product${query.size > 0 ? `?${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(pageOfProductDtos, await res.json())
};