feat(metadata): implement MetadataRequest and supporting classes for file metadata extraction and response formatting

scripts/API/actions/metadata.js

@@ -0,0 +1,24 @@
+const CustomErrors = require(`../../utilities/errors`);
+const Messaging = require(`../../utilities/messaging`);
+
+const MetadataExtractor = require(`../../file-management/analyze`);
+const Cleaner = require(`../response/simple-data`);
+
+const MetadataRequest = class Request {
+	static analyze (REQUEST, RESPONSE) {
+		// Check if the file is valid.
+		if (REQUEST.file) {
+			// Get the file information.
+			const fileInfo = new MetadataExtractor(REQUEST.file).extract([ `originalname`, `mimetype`, `size`]);
+			
+			const cleanedData = (new Cleaner(fileInfo)).format();
+			RESPONSE.status(200).json(cleanedData);
+		} else {
+			// If the file is not valid, return an error.
+			const ERROR = new CustomErrors.Data.Missing(REQUEST.file);
+			Messaging.exception(RESPONSE, ERROR);
+		};
+	};
+}
+
+module.exports = MetadataRequest;