done purchases remove, ocr scan, read image

express-server/node_modules/express-fileupload/lib/tempFileHandler.js

@@ -0,0 +1,42 @@
+const fs = require('fs');
+let writeStream;
+let tempFilePath;
+
+module.exports.getTempFilePath = function() {
+  return tempFilePath;
+};
+
+module.exports.cleanupStream = function() {
+  writeStream.end();
+
+  fs.unlink(tempFilePath, function(err) {
+    if (err) throw err;
+  });
+};
+
+module.exports.complete = function(){
+  writeStream.end();
+};
+
+module.exports.tempFileHandler = function(options, fieldname, filename) {
+  const dir = __dirname + (options.tempFileDir || '/tmp/');
+
+  if (!fs.existsSync(dir)) {
+    fs.mkdirSync(dir);
+  }
+  tempFilePath = dir + 'tmp' + Date.now();
+  writeStream = fs.createWriteStream(tempFilePath);
+  let fileSize = 0; // eslint-disable-line
+
+  return function(data) {
+    writeStream.write(data);
+    fileSize += data.length;
+    if (options.debug) {
+      return console.log( // eslint-disable-line
+        `Uploaded ${data.length} bytes for `,
+        fieldname,
+        filename
+      ); 
+    }
+  };
+};