Update main.coffee

main.coffee

@@ -15,42 +15,42 @@ isBase64 = (str) ->
 
 app = express()
 app.set 'json spaces', 4
-# limit upload file
+
+# Limit upload file
 app.use express.json limit: limitSize
 app.use express.urlencoded extended: true, limit: limitSize
-# logger
+
+# Logger middleware
 app.use (req, res, next) ->
 	time = new Date().toLocaleString 'id', timeZone: 'Asia/Jakarta'
 	console.log "[#{time}] #{req.method}: #{req.url}"
 	next()
-# allow user to access file in tmpFolder
+
+# Serve static files from tmpFolder
 app.use '/file', express.static tmpFolder
 
 app.all '/', (_, res) -> res.send 'POST /upload'
 
-app.all '/upload', (req, res) ->
-	if req.method isnt 'POST'
-		res.json message: 'Method not allowed'
-
+app.post '/upload', async (req, res) ->
 	{ file } = req.body
-	if not file and typeof file isnt 'string' and not isBase64 file
-		res.json message: 'Payload body file must be filled in base64 format'
+	if not file or typeof file isnt 'string' or not isBase64(file)
+		res.status(400).json message: 'Payload body file must be filled in base64 format'
+		return
+
+	fileBuffer = Buffer.from(file, 'base64')
+	ftype = await fromBuffer(fileBuffer) or { mime: 'application/octet-stream', ext: 'bin' }
 
-	fileBuffer = Buffer.from file, 'base64'
-	ftype = await fromBuffer fileBuffer
-	if not ftype then ftype = mime: 'file', ext: 'bin'
-	
 	randomName = Math.random().toString(36).slice(2)
 	fileName = "#{ftype.mime.split('/')[0]}-#{randomName}.#{ftype.ext}"
 	await fs.promises.writeFile "#{tmpFolder}/#{fileName}", fileBuffer
-		
+	
 	res.json
 		name: fileName,
 		size:
-			bytes: fileBuffer.length,
-			readable: bytes fileBuffer.length, unitSeparator: ' '
+			bytes: fileBuffer.length
+			readable: bytes(fileBuffer.length, unitSeparator: ' ')
 		,
-		type: ftype,
+		type: ftype
 		url: "https://#{process.env.SPACE_HOST}/file/#{fileName}"
 
-app.listen 7860, () -> console.log 'App running on port', 7860
+app.listen 7860, -> console.log 'App running on port', 7860