import {z} from 'zod'

export type GetApiEvmRhQuoteArgs = {tokenAddress: string, side: 'buy' | 'sell', amountWei: string};

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

export const getApiEvmRhQuoteResponse = z.object({success: z.boolean(), response: z.object({side: z.enum(["buy", "sell"]), venue: z.enum(["curve", "pool"]), amountInWei: z.string(), amountOutWei: z.string(), feeWei: z.string().nullable(), asOfBlock: z.number()}).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
};

/**
 * Get swap quote
 * 
 * GET /evm/rh/quote
 */
export const getApiEvmRhQuote = async (args: GetApiEvmRhQuoteArgs, options?: GetApiEvmRhQuoteOptions) => {
const {baseUrl = "https://public-api-v2.bags.fm/api/v1", fetch: fetchFn = fetch, ApiKeyAuth} = options ?? {}

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

if (args.tokenAddress != null) query.append("tokenAddress", String(args.tokenAddress))
if (args.side != null) query.append("side", String(args.side))
if (args.amountWei != null) query.append("amountWei", String(args.amountWei))
if (ApiKeyAuth !== undefined) headers.set("x-api-key", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/evm/rh/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(getApiEvmRhQuoteResponse, await res.json())
};