import {z} from 'zod'

export type TransitResponseFormat = 'encoded' | 'full' | 'structured';

export type TransitFeeTier = 'zeroFee' | 'standardFee';

export type GetApiPaxosTransitOrdersQuoteArgs = {userAddress: string, offerAsset: string, wantAsset: string, offerAmount: string, sourceChainId: number, destinationChainId: number, permitSignature?: string | undefined, permitDeadline?: number | undefined, responseFormat?: TransitResponseFormat | undefined, feeTier?: TransitFeeTier | undefined};

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

export const paxosResponseBody = z.record(z.string(), z.unknown());

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
};

/**
 * Signed submitOrder calldata. feeTier=zeroFee needs a whitelisted address, the USDC/USDG route on this chain and enough capacity.
 * 
 * GET /paxos/transit/orders/quote
 */
export const getApiPaxosTransitOrdersQuote = async (args: GetApiPaxosTransitOrdersQuoteArgs, options?: GetApiPaxosTransitOrdersQuoteOptions) => {
const {baseUrl = "https://arbitrum.gmxapi.io/v1", fetch: fetchFn = fetch} = options ?? {}

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

if (args.userAddress != null) query.append("userAddress", String(args.userAddress))
if (args.offerAsset != null) query.append("offerAsset", String(args.offerAsset))
if (args.wantAsset != null) query.append("wantAsset", String(args.wantAsset))
if (args.offerAmount != null) query.append("offerAmount", String(args.offerAmount))
if (args.sourceChainId != null) query.append("sourceChainId", String(args.sourceChainId))
if (args.destinationChainId != null) query.append("destinationChainId", String(args.destinationChainId))
if (args.permitSignature != null) query.append("permitSignature", String(args.permitSignature))
if (args.permitDeadline != null) query.append("permitDeadline", String(args.permitDeadline))
if (args.responseFormat != null) query.append("responseFormat", String(args.responseFormat))
if (args.feeTier != null) query.append("feeTier", String(args.feeTier))

const url = `${baseUrl.replace(/\/+$/, '')}/paxos/transit/orders/quote${query.size > 0 ? `?${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(paxosResponseBody, await res.json())
};