import {z} from 'zod'

export type RoutePlanLeg = {venue: string, inAmount: string, outAmount: string, inputMint: string, outputMint: string, inputMintDecimals: number, outputMintDecimals: number, marketKey: string, data: string};

export type PlatformFee = {amount: string, feeBps: number, feeAccount: string, segmenterFeeAmount: string, segmenterFeePct: number};

export type TradeQuoteResponse = {requestId: string, contextSlot: number, inAmount: string, inputMint: string, outAmount: string, outputMint: string, minOutAmount: string, otherAmountThreshold: string, priceImpactPct: string, slippageBps: number, routePlan: Array<RoutePlanLeg>, platformFee?: PlatformFee | undefined, outTransferFee?: (string | null) | undefined, simulatedComputeUnits?: (number | null) | undefined};

export type SwapTransactionRequest = {quoteResponse: TradeQuoteResponse, userPublicKey: string};

export type CreateApiTradeSwapArgs = {body: SwapTransactionRequest};

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

export const createApiTradeSwapResponse = z.object({success: z.boolean(), response: z.object({swapTransaction: z.string(), computeUnitLimit: z.number(), lastValidBlockHeight: z.number(), prioritizationFeeLamports: 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
};

/**
 * Create swap transaction
 * 
 * POST /trade/swap
 */
export const createApiTradeSwap = async (args: CreateApiTradeSwapArgs, options?: CreateApiTradeSwapOptions) => {
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('content-type', "application/json")
headers.set('accept', "application/json")

if (ApiKeyAuth !== undefined) headers.set("x-api-key", ApiKeyAuth)

const url = `${baseUrl.replace(/\/+$/, '')}/trade/swap${query.size > 0 ? `?${query}` : ''}`

const res = await fetchFn(url, {method: "POST", headers, body: JSON.stringify(args.body)})

if (!res.ok) throw new Error(`Request failed with status ${res.status}`, {cause: {status: res.status, body: await res.text()}})

return validateResponse(createApiTradeSwapResponse, await res.json())
};