import {z} from 'zod'

export type GetApiV1AccountsArgs = {reference?: unknown | undefined};

export type GetApiV1AccountsOptions = {baseUrl: string, apiKey?: string | undefined, fetch?: typeof fetch | undefined};

export const accountDetails = z.object({id: z.number().int().optional(), org_id: z.string().optional(), parent_id: z.number().int().nullable().optional(), reference: z.string().optional(), account_type: z.enum(["CryptoPayIn", "CryptoPayOut", "FiatPayIn", "FiatPayOut", "Crypto", "Bank", "Card", "MPCVault", "GooglePay", "ApplePay"]).optional(), name: z.string().optional(), chain_id: z.number().int().optional(), address: z.string().optional(), currencies: z.array(z.enum(["ETH", "USDC", "USDT", "WETH", "DAI", "SOL"])).optional(), account_number: z.string().optional(), sort_code: z.string().optional(), enabled: z.boolean().optional(), state: z.enum(["Unknown", "Pending", "Ready"]).optional(), created_by: z.string().optional(), created_at: z.string().optional(), updated_at: z.string().optional(), deleted_at: z.string().nullable().optional()});

export const accounts = z.object({data: z.object({items: z.array(accountDetails).optional()}).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
};

/**
 * List Merchant Settlement Accounts
 * 
 * GET /v1/accounts
 */
export const getApiV1Accounts = async (args: GetApiV1AccountsArgs, options: GetApiV1AccountsOptions) => {
const {baseUrl, fetch: fetchFn = fetch, apiKey} = options ?? {}

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

if (args.reference != null) query.append("reference", String(args.reference))
if (apiKey !== undefined) headers.set("x-api-key", apiKey)

const url = `${baseUrl.replace(/\/+$/, '')}/v1/accounts${query.size > 0 ? `?${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(accounts, await res.json())
};