export default {
async fetch(request, env) {
const url = new URL(request.url);
const path = url.pathname;
if (!isPublicRequest(request, path)) {
const isAuthorized = await checkAuthorization(request, env);
if (!isAuthorized) {
return new Response('Unauthorized', { status: 401 });
}
}
switch (path) {
case '/':
return await handleDefaultGet(env);
case '/all':
return await handleAllGet(env);
case '/qr':
return await handleQrGet(env);
case '/manage':
return await handleManageGet(env);
case '/manage/upload':
return await handleUpload(request, env);
case '/manage/remove':
return await handleRemove(request, env);
case '/manage/replace':
return await handleReplace(request, env);
case '/manage/select':
return await handleSelect(request, env);
default:
return new Response('Not found', { status: 404 });
}
},
};
// Helper function to determine if a request is public
function isPublicRequest(request, path) {
return request.method === 'GET';
}
// Helper function to check authorization
async function checkAuthorization(request, env) {
const authHeader = request.headers.get('X-Auth-Bearer');
const storedAuthKey = env.AUTH_KEY_SECRET;
return authHeader === storedAuthKey;
}
async function handleDefaultGet(env) {
const index = await getIndex(env);
const selectedFile = index.find((file) => file.selected);
return new Response(`
Tutorium Resources
`, { headers: { 'Content-Type': 'text/html' } });
}
// GET for "/all"
async function handleAllGet(env) {
const index = await getIndex(env);
index.reverse();
const selectedFile = index.find((file) => file.selected);
const listItems = index.map(file => `
${file.name} - Uploaded on ${file.upload_date}
Download
`).join('');
return new Response(`
All Files - Tutorium Resources
`, { headers: { 'Content-Type': 'text/html' } });
}
// GET for "/manage"
async function handleManageGet(env) {
const index = await getIndex(env);
const tableRows = index.map((file, i) => `
| ${file.name} |
|
|
|
`).join('');
return new Response(`
Manage Files - Tutorium Resources
`, { headers: { 'Content-Type': 'text/html' } });
}
async function handleQrGet(env) {
const index = await getIndex(env);
const selectedFile = index.find((file) => file.selected);
return new Response(`
QR Code - Tutorium Resources
`, { headers: { 'Content-Type': 'text/html' } });
}
// POST for "/manage/select"
async function handleSelect(request, env) {
const { filename } = await request.json();
const index = await getIndex(env);
// Mark the selected file and unselect others
index.forEach((file) => {
file.selected = (file.filename === filename);
});
await updateIndex(env, index);
return new Response('Selected file updated successfully');
}
// POST for "/manage/upload"
async function handleUpload(request, env) {
const formData = await request.formData();
const file = formData.get('file');
const displayName = formData.get('displayName');
// Validate file and displayName
if (!file || !displayName) {
return new Response('File and display name are required', { status: 400 });
}
const filename = `${Date.now()}_${file.name}`;
await env.CDN_BUCKET.put(`uni/ws2425/tutorien/epr/loesungen/${filename}`, file.stream());
// Update index.json with the new file
const index = await getIndex(env);
index.push({
name: displayName,
upload_date: new Date().toISOString(),
filename,
selected: false
});
await updateIndex(env, index);
return new Response('File uploaded', { status: 200 });
}
// POST for "/manage/remove"
async function handleRemove(request, env) {
const { filename } = await request.json();
await env.CDN_BUCKET.delete(`uni/ws2425/tutorien/epr/loesungen/${filename}`);
const index = await getIndex(env);
const updatedIndex = index.filter(file => file.filename !== filename);
await updateIndex(env, updatedIndex);
return new Response('File removed successfully');
}
// POST for "/manage/replace"
async function handleReplace(request, env) {
const formData = await request.formData();
const newFile = formData.get('newFile');
const filename = formData.get('filename');
await env.CDN_BUCKET.put(`uni/ws2425/tutorien/epr/loesungen/${filename}`, newFile.stream());
return new Response('File replaced successfully');
}
// Helper functions
async function getIndex(env) {
const indexObj = await env.CDN_BUCKET.get('uni/ws2425/tutorien/epr/index.json');
return indexObj ? JSON.parse(await indexObj.text()) : [];
}
async function updateIndex(env, index) {
await env.CDN_BUCKET.put('uni/ws2425/tutorien/epr/index.json', JSON.stringify(index));
}
Download
View All Files
Discord