AzuTear
70 lines
1.9 KiB
TypeScript
70 lines
1.9 KiB
TypeScript
const API_URL = (import.meta.env.VITE_API_URL ?? '').replace(/\/$/, '')
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const API_LABEL = API_URL || 'same-origin /api'
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export const AUTH_TOKEN_KEY = 'vtsa-session-token'
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export class ApiRequestError extends Error {
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status: number | null
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constructor(message: string, status: number | null = null) {
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super(message)
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this.name = 'ApiRequestError'
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this.status = status
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}
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}
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function getAuthToken() {
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if (typeof window === 'undefined') return null
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return window.localStorage.getItem(AUTH_TOKEN_KEY)
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}
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function clearAuthToken() {
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if (typeof window === 'undefined') return
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window.localStorage.removeItem(AUTH_TOKEN_KEY)
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}
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async function parseError(response: Response, path: string) {
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const error = await response.text().catch(() => '')
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const message = extractErrorMessage(error) || `API request failed for ${path}`
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throw new ApiRequestError(message, response.status)
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}
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function extractErrorMessage(error: string) {
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if (!error.trim()) return ''
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try {
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const parsed = JSON.parse(error) as { message?: unknown; title?: unknown; detail?: unknown }
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const message = parsed.message ?? parsed.detail ?? parsed.title
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return typeof message === 'string' ? message : error
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} catch {
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return error
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}
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}
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export async function requestJson<TResponse>(
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path: string,
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options: RequestInit = {},
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): Promise<TResponse> {
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const token = getAuthToken()
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const headers = new Headers(options.headers)
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if (token) {
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headers.set('Authorization', `Bearer ${token}`)
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}
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const response = await fetch(`${API_URL}${path}`, {
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...options,
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headers,
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}).catch(() => {
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throw new ApiRequestError(`API nicht erreichbar (${API_LABEL}). Bitte Backend starten.`)
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})
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if (!response.ok) {
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if (response.status === 401 || response.status === 403) {
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clearAuthToken()
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}
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await parseError(response, path)
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}
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return response.json() as Promise<TResponse>
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}
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