60 lines
1.7 KiB
TypeScript
60 lines
1.7 KiB
TypeScript
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/**
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* SvelteKit server hook — proxies /api/* requests to the Flask backend.
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*
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* Uses API_BACKEND env var (set in podman-compose.yml).
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* Falls back to http://elemes:5000, then tries container IP resolution.
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*/
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import type { Handle } from '@sveltejs/kit';
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import { execSync } from 'child_process';
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function resolveBackend(): string {
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const env = process.env.API_BACKEND;
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if (env) return env;
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return 'http://elemes:5000';
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}
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const API_BACKEND = resolveBackend();
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export const handle: Handle = async ({ event, resolve }) => {
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if (event.url.pathname.startsWith('/api/')) {
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const backendPath = event.url.pathname.replace(/^\/api/, '');
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const backendUrl = `${API_BACKEND}${backendPath}${event.url.search}`;
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try {
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const headers: Record<string, string> = {};
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const contentType = event.request.headers.get('content-type');
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if (contentType) headers['content-type'] = contentType;
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const accept = event.request.headers.get('accept');
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if (accept) headers['accept'] = accept;
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const init: RequestInit = {
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method: event.request.method,
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headers,
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};
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if (event.request.method !== 'GET' && event.request.method !== 'HEAD') {
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init.body = await event.request.text();
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}
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const res = await fetch(backendUrl, init);
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const body = await res.text();
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return new Response(body, {
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status: res.status,
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headers: {
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'content-type': res.headers.get('content-type') ?? 'application/json',
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},
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});
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} catch (err) {
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console.error(`API proxy error (${backendUrl}):`, err);
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return new Response(JSON.stringify({ error: 'Backend unavailable' }), {
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status: 502,
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headers: { 'content-type': 'application/json' },
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});
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}
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}
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return resolve(event);
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};
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