import {z} from 'zod'

export type CreateApiFednowArgs = {body: {account_id: string, amount: string, description?: string | undefined, external_account_number: string, external_name: string, external_routing_number: string, memo?: string | undefined, originator_name?: string | undefined, security_context?: ({device_id?: string | undefined, ip_address?: string | undefined, user_agent?: string | undefined}) | undefined}};

export type CreateApiFednowOptions = {baseUrl?: string | undefined, basicAuth?: {username: string, password: string} | undefined, fetch?: typeof fetch | undefined};

export const createApiFednowResponse = z.object({account_id: z.string().optional(), amount: z.string().optional(), bank_id: z.string().optional(), created_at: z.string().optional(), currency: z.string().optional(), description: z.string().optional(), error: z.string().optional(), external_account_number: z.string().optional(), external_name: z.string().optional(), external_reject_reason: z.object({reason_code: z.string().optional(), reason_description: z.string().optional()}).optional(), external_routing_number: z.string().optional(), external_status: z.string().optional(), fed_settlement_date: z.string().optional(), id: z.string().optional(), memo: z.string().optional(), org_id: z.string().optional(), originator_name: z.string().optional(), payment_id: z.string().optional(), payment_type: z.string().optional(), related_fednow_ids: z.array(z.string()).optional(), security_context: z.object({device_id: z.string().optional(), ip_address: z.string().optional(), user_agent: z.string().optional()}).optional(), status: z.string().optional(), updated_at: z.string().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 a FedNow Payment
 * 
 * POST /fednow
 * 
 * Also accepts auth: apiKey
 */
export const createApiFednow = async (args: CreateApiFednowArgs, options?: CreateApiFednowOptions) => {
const {baseUrl = "https://api.treasuryprime.com", fetch: fetchFn = fetch, basicAuth} = options ?? {}

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

if (basicAuth !== undefined) headers.set('authorization', `Basic ${btoa(`${basicAuth.username}:${basicAuth.password}`)}`)

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