feat: Move to Astro

src/pages/api/run.ts

@@ -0,0 +1,146 @@
+import { objectMap, objectOmit } from '@dzeio/object-util'
+import URLManager from '@dzeio/url-manager'
+import type { APIRoute } from 'astro'
+import { exec as execSync } from 'child_process'
+import fs from 'fs/promises'
+import { evaluate } from 'mathjs'
+import os from 'node:os'
+import path from 'node:path/posix'
+import { promisify } from 'node:util'
+import FilesUtils from '../../libs/FilesUtils'
+import { buildRFC7807Error } from '../../libs/HTTPError'
+import { getParams } from '../../libs/gcodeUtils'
+
+const exec = promisify(execSync)
+
+let tmpDir: string
+
+export const post: APIRoute = async ({ request }) => {
+	if (!tmpDir) {
+		tmpDir = await fs.mkdtemp(path.join(os.tmpdir(), 'paas-'))
+	}
+
+	const query = new URLManager(request.url).query()
+	const file = (Math.random() * 1000000).toFixed(0)
+	console.log('started processing new request', file)
+	await fs.mkdir(`${tmpDir}/files`, { recursive: true })
+	
+	const overrides = objectOmit(query, 'algo', 'config')
+	const configName = query?.config ?? 'config'
+	let config = `${import.meta.env.CONFIGS_PATH}/` + configName + '.ini'
+	if (!await FilesUtils.exists(config)) {
+		console.log('request finished in error :(', file)
+		return buildRFC7807Error({
+			type: '/missing-config-file',
+			status: 404,
+			title: 'Configuration file is missing',
+			details: `the configuration file "${configName}" is not available on the remote server`
+		})
+	}
+	const stlPath = `${tmpDir}/files/${file}.stl`
+	const gcodePath = `${tmpDir}/files/${file}.gcode`
+	
+	// write file
+	await fs.writeFile(stlPath, new Uint8Array(Buffer.from(await request.arrayBuffer())), {
+		encoding: null
+	})
+	// console.log(fs.statSync(stlPath).size, req.body.length)
+	let additionnalParams = objectMap(overrides, (value, key) => `--${(key as string).replace(/_/g, '-')} ${value}`).join(' ')
+	const slicer = import.meta.env.PRUSASLICER_PATH ?? 'prusa-slicer'
+	if (slicer.includes('prusa')) {
+		additionnalParams += ' --export-gcode'
+	}
+	const cmd = `${slicer} ${stlPath} --load ${config} --output ${gcodePath} ${additionnalParams}`
+	try {
+		await exec(cmd, {
+			timeout: 60000
+		})
+	} catch (e: any) {
+		console.log('request finished in error :(', file)
+		const line = e.toString()
+		console.error(e)
+		if (line.includes('Objects could not fit on the bed')) {
+			await fs.rm(stlPath)
+			return buildRFC7807Error({
+				type: '/object-too-large',
+				status: 413,
+				title: 'Object is too large'
+			})
+		} else if (line.includes('No such file')) {
+			await fs.rm(stlPath)
+			return buildRFC7807Error({
+				type: '/missing-config-file',
+				status: 404,
+				title: 'Configuration file is missing',
+				details: `the configuration file "${configName}" is not available on the remote server`
+			})
+		} else if (line.includes('Unknown option')) {
+			await fs.rm(stlPath)
+			return buildRFC7807Error({
+				type: '/slicer-option-unknown',
+				status: 400,
+				title: ' config override doew not exists',
+				details: 'an override does not exists, please contact an administrator or refer to the documentation'
+			})
+		} else if (
+			line.includes('is not recognized as an internal or external command') ||
+			line.includes('.dll was not loaded')
+		) {
+			await fs.rm(stlPath)
+			return buildRFC7807Error({
+				type: '/slicer-not-found',
+				status: 408,
+				title: 'the slicer used to process this file has not been found',
+				details: 'the server has a misconfiguration meaning that we can\'t process the request, please contact an administrator',
+				additionnalInfo: line.includes('dll') ? 'Missing DLL' : 'Slicer not found '
+			})
+		} else if (line.includes('ETIMEDOUT')) {
+			await fs.rm(stlPath)
+			return buildRFC7807Error({
+				type: '/timed-out-slicing',
+				status: 408,
+				title: 'Timed out slicing file',
+				detail: `The file you are trying to process takes too long to be processed`,
+				processingTimeoutMillis: 60000
+			})
+		}
+		return buildRFC7807Error({
+			type: '/general-input-output-error',
+			status: 500,
+			title: 'General I/O error',
+			details: 'A server error make it impossible to slice the file, please contact an administrator with the json error',
+			fileId: file,
+			config: configName,
+			// fileSize: req.body.length,
+			overrides: overrides,
+			serverMessage:
+				e.toString().replace(cmd, '***SLICER***').replace(stlPath, configName ?? `***FILE***`).replace(`${path}/configs/`, '').replace('.ini', '')
+		})
+	}
+	const gcode = await fs.readFile(gcodePath, 'utf-8')
+	await fs.rm(stlPath)
+	await fs.rm(gcodePath)
+	const params = getParams(gcode)
+	let price = -1
+	if (query?.algo) {
+		let algo = query.algo as string
+		// objectLoop(params, (value, key) => {
+		// 	if (typeof value !== 'number') {
+		// 		return
+		// 	}
+		// 	while (algo.includes(key)) {
+		// 		algo = algo.replace(key, value.toString())
+		// 	}
+		// })
+		price = evaluate(algo, params)
+	}
+	console.log('request successfull :)', file)
+	return {
+		status: 200,
+		body: JSON.stringify({
+			price: parseFloat(price.toFixed(2)),
+			...getParams(gcode),
+			gcode
+		})
+	}
+}