import {z} from 'zod'

export type GetApiV1TransactionTransactionExternalIdEventArgs = {transactionExternalId: string, gateway_account_id: string, include_all_events?: boolean | undefined, status_version?: number | undefined};

export type GetApiV1TransactionTransactionExternalIdEventOptions = {baseUrl?: string | undefined, fetch?: typeof fetch | undefined};

export const externalTransactionState = z.object({can_retry: z.boolean().nullable().optional(), code: z.string().optional(), finished: z.boolean().optional(), message: z.string().optional(), status: z.string().optional()});

export const transactionEvent = z.object({amount: z.number().int().optional(), data: z.record(z.string(), z.object({})).optional(), event_type: z.string().optional(), resource_type: z.string().optional(), state: externalTransactionState.optional(), timestamp: z.string().optional()});

export const transactionEventResponse = z.object({events: z.array(transactionEvent).optional(), transaction_id: 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
};

/**
 * Get events for transaction external ID
 * 
 * GET /v1/transaction/{transactionExternalId}/event
 */
export const getApiV1TransactionTransactionExternalIdEvent = async (args: GetApiV1TransactionTransactionExternalIdEventArgs, options?: GetApiV1TransactionTransactionExternalIdEventOptions) => {
const {baseUrl = "http://ledger_url", fetch: fetchFn = fetch} = options ?? {}

const query = new URLSearchParams()
const headers = new Headers()
headers.set('accept', "application/json; qs=1")

if (args.gateway_account_id != null) query.append("gateway_account_id", String(args.gateway_account_id))
if (args.include_all_events != null) query.append("include_all_events", String(args.include_all_events))
if (args.status_version != null) query.append("status_version", String(args.status_version))

const url = `${baseUrl.replace(/\/+$/, '')}/v1/transaction/${encodeURIComponent(String(args.transactionExternalId))}/event${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(transactionEventResponse, await res.json())
};