initial commit

Signed-off-by: Florian BOUILLON <f.bouillon@aptatio.com>

src/main.js

@@ -0,0 +1,89 @@
+const express = require('express')
+const fs = require('fs')
+const execSync = require('child_process').execSync;
+const { objectMap } = require('@dzeio/object-util')
+
+const server = express()
+
+fs.mkdirSync('files', { recursive: true })
+
+/**
+ * 
+ * @param {string} data the GCode source
+ * @returns {number} the time in seconds
+ */
+function decodeGCode(data) {
+
+	const line = data.split('\n').find((it) => it.includes('estimated printing time'))
+	if (!line) {
+		console.error('line not found :(')
+		process.exit(1)
+	}
+	const time = line.split('=')[1].trim()
+	let timeInSec = 0
+	for (const it of time.split(' ')) {
+		const lastChar = it.charAt(it.length - 1)
+		const time = parseInt(it.slice(0, it.length - 1), 10)
+		console.log(it)
+		switch (lastChar) {
+			case 'm':
+				timeInSec += time * 60
+				break;
+			case 's':
+				timeInSec += time
+				break;
+			case 'h':
+				timeInSec += time * 60 * 60
+				break;
+			case 'd':
+				timeInSec += time * 60 * 60 * 24
+				break;
+			default:
+				throw new Error(`error parsing time ${it} (${time})`)
+		}
+	}
+	console.log('orig', time, 'secs:', timeInSec, 'mins:', timeInSec / 60, 'hours:', timeInSec / 60 / 60, 'days:', timeInSec / 60 / 60 / 24)
+	return timeInSec
+}
+
+
+server.use ((req, res, next) => {
+    var data = '';
+    req.setEncoding('utf8');
+    req.on('data', function(chunk) { 
+       data += chunk;
+    });
+
+    req.on('end', function() {
+        req.body = data;
+        next();
+    });
+});
+
+const path = process.cwd()
+
+server.get('/', (req, res) => {
+	res.send('send through POST in body the stl')
+})
+
+const config = `${path}/configs/config.ini`
+
+server.post('/', (req, res) => {
+	const overrides = req.query
+	const file = (Math.random() * 1000000).toFixed(0)
+	const stlPath = `${path}/files/${file}.stl`
+	const gcodePath = `${path}/files/${file}.gcode`
+	console.log(stlPath)
+	fs.writeFileSync(stlPath, req.body)
+	const additionnalParams = objectMap(overrides, (v, k) => `--${k} ${v}`).join(' ')
+	const cmd = `${process.env.SLICER_PATH} --export-gcode ${stlPath} --load ${config} --output ${gcodePath} ${additionnalParams}`
+	execSync(cmd)
+	const gcode = fs.readFileSync(gcodePath, 'utf-8')
+	const time = decodeGCode(gcode)
+	res.json({ timeToPrint: time, gcode })
+	// res.sendFile(gcodePath)
+})
+
+server.listen(3000, undefined, () => {
+	console.log(`🚀 Server ready at localhost:3000`);
+})