import {z} from 'zod'

export type GetApiV2QuoteArgs = {fromChainId: string, fromTokenAddress: string, toChainId: string, toTokenAddress: string, fromAmount: string, userAddress: string, uniqueRoutesPerBridge: boolean, disableSwapping?: boolean | undefined, includeDexes?: 'oneinch' | undefined, excludeDexes?: 'oneinch' | undefined, includeBridges?: (Array<'polygon-bridge' | 'hop' | 'anyswap-router-v4' | 'hyphen' | 'arbitrum-bridge' | 'connext'>) | undefined, excludeBridges?: (Array<'polygon-bridge' | 'hop' | 'anyswap-router-v4' | 'hyphen' | 'arbitrum-bridge' | 'connext'>) | undefined, sort: 'output' | 'gas' | 'time', maxUserTxs?: string | undefined, singleTxOnly?: boolean | undefined, 'API-KEY'?: string | undefined};

export type GetApiV2QuoteOptions = {baseUrl: string, fetch?: typeof fetch | undefined};

export const chainGasBalances = z.object({});

export const route = z.object({routeId: z.string(), fromAmount: z.string(), chainGasBalances: chainGasBalances, toAmount: z.string(), usedBridgeNames: z.array(z.enum(["polygon-bridge", "hop", "anyswap-router-v4", "hyphen", "arbitrum-bridge", "connext"])), totalUserTx: z.number(), totalGasFeesInUsd: z.number(), sender: z.string(), userTxs: z.array(z.object({})), serviceTime: z.number()});

export const tokenAsset = z.object({name: z.string().optional(), address: z.string(), icon: z.string().optional(), decimals: z.number().optional(), symbol: z.string(), chainId: z.enum(["ETHEREUM", "OPTIMISM", "BSC", "XDAI", "POLYGON", "FANTOM", "ARBITRUM", "AVALANCHE"])});

export const quoteOutputDTO = z.object({success: z.boolean(), result: z.object({routes: z.array(route), fromChainId: z.number(), fromAsset: tokenAsset, toChainId: z.number(), toAsset: tokenAsset})});

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 /v2/quote
 */
export const getApiV2Quote = async (args: GetApiV2QuoteArgs, options: GetApiV2QuoteOptions) => {
const {baseUrl, fetch: fetchFn = fetch} = options ?? {}

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

if (args.fromChainId != null) query.append("fromChainId", String(args.fromChainId))
if (args.fromTokenAddress != null) query.append("fromTokenAddress", String(args.fromTokenAddress))
if (args.toChainId != null) query.append("toChainId", String(args.toChainId))
if (args.toTokenAddress != null) query.append("toTokenAddress", String(args.toTokenAddress))
if (args.fromAmount != null) query.append("fromAmount", String(args.fromAmount))
if (args.userAddress != null) query.append("userAddress", String(args.userAddress))
if (args.uniqueRoutesPerBridge != null) query.append("uniqueRoutesPerBridge", String(args.uniqueRoutesPerBridge))
if (args.disableSwapping != null) query.append("disableSwapping", String(args.disableSwapping))
if (args.includeDexes != null) query.append("includeDexes", String(args.includeDexes))
if (args.excludeDexes != null) query.append("excludeDexes", String(args.excludeDexes))
for (const item of args.includeBridges ?? []) query.append("includeBridges", String(item))
for (const item of args.excludeBridges ?? []) query.append("excludeBridges", String(item))
if (args.sort != null) query.append("sort", String(args.sort))
if (args.maxUserTxs != null) query.append("maxUserTxs", String(args.maxUserTxs))
if (args.singleTxOnly != null) query.append("singleTxOnly", String(args.singleTxOnly))
if (args['API-KEY'] != null) headers.set("API-KEY", String(args['API-KEY']))

const url = `${baseUrl.replace(/\/+$/, '')}/v2/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(quoteOutputDTO, await res.json())
};