evening_detective_frontend/src/api/auth_client.ts

import { useAuthStore } from '@/stores/auth'

import {
  createEveningDetectiveServerClient,
  type EveningDetectiveServer,
} from './generated/crabs/evening_detective_server'
import { createHttpHandler } from './generated/crabs/evening_detective_server/client'

export function getAuthClient() {
  const authStore = useAuthStore()
  return buildAuthClient(authStore.refreshTokenAction, authStore.getToken)
}

function buildAuthClient(
  refreshTokens: () => Promise<boolean>,
  getToken: () => string | null,
): EveningDetectiveServer {
  return createEveningDetectiveServerClient(
    createAuthHttpHandler(refreshTokens, createHttpHandler(getToken)),
  )
}

function createAuthHttpHandler(
  refreshTokens: () => Promise<boolean>,
  handler: (request: { path: string; method: string; body: string | null }) => Promise<unknown>,
): (request: { path: string; method: string; body: string | null }) => Promise<unknown> {
  return async (request: { path: string; method: string; body: string | null }) => {
    let response: unknown
    try {
      response = await handler(request)
    } catch {
      await refreshTokens()
      response = await handler(request)
    }
    // Gateway возвращает gRPC-ошибки как JSON даже при HTTP 403/400/500.
    if (response && typeof response === 'object' && 'code' in response && response.code !== 0) {
      throw new Error(
        'message' in response && typeof response.message === 'string'
          ? response.message
          : 'Ошибка запроса',
      )
    }
    return response
  }
}