Can check for uploaded files

src/entities/RequestHandler.ts

@@ -3,6 +3,7 @@ import { APIHelper } from "../helpers/APIHelper";
 import { APIClient } from "./APIClient";
 import { checkMail } from "../utils/StringUtils";
 import { AccountHelper } from "../helpers/AccountHelper";
+import { UploadedFile } from "express-fileupload";
 
 /**
  * Response to a request
@@ -169,6 +170,31 @@ export class RequestHandler {
 		return param === "true" || param === true;
 	}
 
+	/**
+	 * Get information about an uploaded file
+	 * 
+	 * @param name The name of the posted file
+	 */
+	private GetUploadedFile(name: string) : undefined | UploadedFile {
+		
+		if(!this.req.files)
+			return undefined;
+
+		if(this.req.files[name] instanceof Array)
+			this.error(500, "Multiple upload are not supported!");
+		
+		return <UploadedFile|undefined>this.req.files[name];
+	}
+
+	/**
+	 * Check out whether a file has been included in the request or not
+	 * 
+	 * @param name The name of the file to check
+	 */
+	public hasFile(name: string) : boolean {
+		return this.GetUploadedFile(name) != undefined;
+	}
+
 
 	/**
 	 * Validate API tokens