import {z} from 'zod'

export type BalanceRequestChainEntry = {address?: string | undefined, denoms?: Array<string> | undefined};

export type BalancesRequest = {chains?: {[key: string]: BalanceRequestChainEntry} | undefined};

export type CreateApiV2InfoBalancesArgs = {body: BalancesRequest};

export type CreateApiV2InfoBalancesOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const apiError = z.object({message: z.string().optional()});

export const balanceResponseDenomEntry = z.object({amount: z.string(), decimals: z.number().int().nullable().optional(), formatted_amount: z.string(), price: z.string().nullable().optional(), value_usd: z.string().nullable().optional(), error: apiError.optional()});

export const balanceResponseChainEntry = z.object({denoms: z.record(z.string(), balanceResponseDenomEntry).optional()});

export const createApiV2InfoBalancesResponse = z.object({chains: z.record(z.string(), balanceResponseChainEntry).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 the balances of a given set of assets on a given chain and wallet address. Compatible with all Skip Go-supported assets, excluding CW20 assets, across SVM, EVM, and Cosmos chains.
 * 
 * POST /v2/info/balances
 */
export const createApiV2InfoBalances = async (args: CreateApiV2InfoBalancesArgs, options?: CreateApiV2InfoBalancesOptions) => {
const {baseUrl = "https://api.skip.build", fetch: fetchFn = fetch} = options ?? {}

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

const url = `${baseUrl.replace(/\/+$/, '')}/v2/info/balances${query.size > 0 ? `?${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(createApiV2InfoBalancesResponse, await res.json())
};