Files
Abschluss-Projekt/backend/services/fetch-labelstudio.js
2025-11-28 09:35:02 +01:00

93 lines
3.0 KiB
JavaScript

const API_URL = 'http://192.168.1.19:8080/api';
const API_TOKEN = 'c1cef980b7c73004f4ee880a42839313b863869f';
const fetch = require('node-fetch');
async function fetchLableStudioProject(projectid) {
// 1. Trigger export
const exportUrl = `${API_URL}/projects/${projectid}/export?exportType=JSON_MIN`;
const headers = { Authorization: `Token ${API_TOKEN}` };
let res = await fetch(exportUrl, { headers });
if (!res.ok) {
let errorText = await res.text().catch(() => '');
console.error(`Failed to trigger export: ${res.status} ${res.statusText} - ${errorText}`);
throw new Error(`Failed to trigger export: ${res.status} ${res.statusText}`);
}
let data = await res.json();
// If data is an array, it's ready
if (Array.isArray(data)) return data;
// If not, poll for the export file
let fileUrl = data.download_url || data.url || null;
let tries = 0;
while (!fileUrl && tries < 20) {
await new Promise(r => setTimeout(r, 2000));
res = await fetch(exportUrl, { headers });
if (!res.ok) {
let errorText = await res.text().catch(() => '');
console.error(`Failed to poll export: ${res.status} ${res.statusText} - ${errorText}`);
throw new Error(`Failed to poll export: ${res.status} ${res.statusText}`);
}
data = await res.json();
fileUrl = data.download_url || data.url || null;
tries++;
}
if (!fileUrl) throw new Error('Label Studio export did not become ready');
// 2. Download the export file
res = await fetch(fileUrl.startsWith('http') ? fileUrl : `${API_URL.replace('/api','')}${fileUrl}`, { headers });
if (!res.ok) {
let errorText = await res.text().catch(() => '');
console.error(`Failed to download export: ${res.status} ${res.statusText} - ${errorText}`);
throw new Error(`Failed to download export: ${res.status} ${res.statusText}`);
}
return await res.json();
}
async function fetchProjectIdsAndTitles() {
try {
const response = await fetch(`${API_URL}/projects/`, {
headers: {
'Authorization': `Token ${API_TOKEN}`,
'Content-Type': 'application/json'
}
});
if (!response.ok) {
let errorText = await response.text().catch(() => '');
console.error(`Failed to fetch projects: ${response.status} ${response.statusText} - ${errorText}`);
throw new Error(`HTTP error! status: ${response.status}`);
}
const data = await response.json();
if (!data.results || !Array.isArray(data.results)) {
throw new Error('API response does not contain results array');
}
// Extract id and title from each project
const projects = data.results.map(project => ({
id: project.id,
title: project.title
}));
console.log(projects)
return projects;
} catch (error) {
console.error('Failed to fetch projects:', error);
return [];
}
}
module.exports = { fetchLableStudioProject, fetchProjectIdsAndTitles };
//getLableStudioProject(20)
//fetchProjectIdsAndTitles()