import {z} from 'zod'

export type GetApiV2TradeTransactionsArgs = {limit: number, page: number, poolHash?: string | undefined};

export type GetApiV2TradeTransactionsOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const tradeV2TransactionResponseDto = z.object({transactionId: z.string().nullable(), blockNumber: z.number(), poolHash: z.string().nullable(), userAddress: z.string().nullable(), id: z.number(), uniqueKey: z.string().nullable(), transactionTime: z.string().nullable(), token0: z.string().nullable(), token1: z.string().nullable(), amount0: z.number().nullable(), amount1: z.number().nullable(), volume: z.number().nullable(), createdAt: z.string(), updatedAt: z.string()});

export const tradeV2TransactionsDataResponseDto = z.object({transactions: z.array(tradeV2TransactionResponseDto), count: z.number()});

export const tradeV2TransactionsResponseDto = z.object({status: z.number(), message: z.string(), error: z.boolean(), data: tradeV2TransactionsDataResponseDto});

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
};

/**
 * Paged transaction history for a new-contract pool
 * 
 * GET /v2/trade/transactions
 */
export const getApiV2TradeTransactions = async (args: GetApiV2TradeTransactionsArgs, options?: GetApiV2TradeTransactionsOptions) => {
const {baseUrl = "https://swap-backend.stage.defi.ovh.gala.com", fetch: fetchFn = fetch} = options ?? {}

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

if (args.limit != null) query.append("limit", String(args.limit))
if (args.page != null) query.append("page", String(args.page))
if (args.poolHash != null) query.append("poolHash", String(args.poolHash))

const url = `${baseUrl.replace(/\/+$/, '')}/v2/trade/transactions${query.size > 0 ? `?${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(tradeV2TransactionsResponseDto, await res.json())
};