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88 lines
2.9 KiB
88 lines
2.9 KiB
require('dotenv').config();
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const fs = require('fs-extra');
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const uuid = require('uuid').v4;
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const express = require('express');
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const multer = require('multer');
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const zws = require('./zws');
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const { path, saveData, log, verify } = require('./utils');
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//#region Variables, module setup
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const app = express();
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const upload = multer({ dest: 'uploads/' });
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const resourceIdSize = 8;
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var tokens = [];
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var data = {};
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preStartup();
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startup();
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function preStartup() {
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// Make sure .env exists
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if (!fs.existsSync(path('.env'))) {
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fs.copyFileSync(path('.env.example'), path('.env'));
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log('File [.env] created');
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require('dotenv').config();
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} else log('File [.env] exists');
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// Make sure data.json exists
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if (!fs.existsSync(path('data.json'))) {
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fs.writeJsonSync(path('data.json'), data, { spaces: 4 });
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log('File [data.json] created');
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} else log('File [data.json] exists');
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// Make sure auth.json exists and generate the first key
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if (!fs.existsSync(path('auth.json'))) {
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tokens.push(uuid().replace(/-/g, ''));
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fs.writeJsonSync(path('auth.json'), { tokens }, { spaces: 4 });
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log('File [auth.json] created');
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log(`\n!! Important: save this token in a secure spot: ${tokens[0]}`);
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} else log('File [auth.json] exists');
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// Read tokens and data
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tokens = fs.readJsonSync(path('auth.json')).tokens;
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data = fs.readJsonSync(path('data.json'));
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log('Tokens & data read from filesystem');
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}
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function startup() {
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// Upload file
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app.post('/', upload.single('file'), (req, res) => {
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if (!verify(req, tokens)) return res.sendStatus(401);
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log(`Uploaded: ${req.file.originalname} (${req.file.mimetype})`);
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// Save the file information
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let resourceId = zws(resourceIdSize); //todo: use crypto-random-string for alternative resourceId
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data[resourceId] = req.file;
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saveData(data);
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res.type('json').send({ resource: `http://lh:${process.env.PORT}/${resourceId}`, delete: `http://lh:${process.env.PORT}/delete/${req.file.filename}` });
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});
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// View file
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app.get('/:resourceId', (req, res) => {
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let resourceId = req.params.resourceId;
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if (data[resourceId]) res.type(data[resourceId].mimetype).sendFile(path(data[resourceId].path));
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else res.sendStatus(404);
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});
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// Delete file
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app.get('/delete/:filename', (req, res) => {
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let filename = req.params.filename;
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let resourceId = Object.keys(data)[Object.values(data).indexOf(Object.values(data).find((d) => d.filename == filename))];
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if (!resourceId || !data[resourceId]) return res.sendStatus(400);
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log(`Deleted: ${data[resourceId].originalname} (${data[resourceId].mimetype})`);
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// Save the file information
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fs.rmSync(path(data[resourceId].path));
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delete data[resourceId];
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saveData(data);
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res.type('text').send('File has been deleted!');
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})
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app.listen(process.env.PORT, () => log(`Server started on port ${process.env.PORT}\nAuthorized tokens: ${tokens.length}\nAvailable files: ${Object.keys(data).length}`));
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} |