Initial commit: Add project files

frontend/src/shared/api/client.ts

@@ -0,0 +1,23 @@
+import axios from 'axios'
+import { ApiProblem, type ProblemDetails } from './problem'
+
+export const api = axios.create({ baseURL: '/api', timeout: 15_000 })
+
+api.interceptors.request.use(config => {
+  const user = import.meta.env.VITE_DEV_AUTH_USER as string | undefined
+  const role = import.meta.env.VITE_DEV_AUTH_ROLE as string | undefined
+  if (import.meta.env.DEV && user && role) {
+    config.headers['X-KArtSell-User'] = user
+    config.headers['X-KArtSell-Role'] = role
+  }
+  return config
+})
+
+api.interceptors.response.use(
+  response => response,
+  error => {
+    const data = error.response?.data as ProblemDetails | undefined
+    if (data?.status) throw new ApiProblem(data)
+    throw error
+  }
+)

frontend/src/shared/api/problem.ts

@@ -0,0 +1,16 @@
+export interface ProblemDetails {
+  type?: string
+  title: string
+  status: number
+  detail?: string
+  traceId?: string
+  errors?: Record<string, string[]>
+}
+
+export class ApiProblem extends Error {
+  constructor(public readonly problem: ProblemDetails) {
+    super(problem.title)
+  }
+
+  get status(): number { return this.problem.status }
+}