Make file system an available notifier option for testing purpose

config.template.yml

@@ -182,6 +182,10 @@ storage:
 # registration or a TOTP registration.
 # Use only an available configuration: filesystem, gmail
 notifier:
+  # For testing purpose, notifications can be sent in a file
+  # filesystem:
+  #   filename: /tmp/authelia/notification.txt
+
   # Use your gmail account to send the notifications. You can use an app password.
   # gmail:
   #   username: user@example.com

server/src/lib/notifiers/FileSystemNotifier.ts

@@ -0,0 +1,22 @@
+import * as BluebirdPromise from "bluebird";
+import * as util from "util";
+import * as Fs from "fs";
+import { INotifier } from "./INotifier";
+import { Identity } from "../../../types/Identity";
+
+import { FileSystemNotifierConfiguration } from "../configuration/Configuration";
+
+export class FileSystemNotifier implements INotifier {
+  private filename: string;
+
+  constructor(options: FileSystemNotifierConfiguration) {
+    this.filename = options.filename;
+  }
+
+  notify(identity: Identity, subject: string, link: string): BluebirdPromise<void> {
+    const content = util.format("Date: %s\nUser: %s\nSubject: %s\nLink: %s", new Date().toString(), identity.userid,
+      subject, link);
+    const writeFilePromised: any = BluebirdPromise.promisify(Fs.writeFile);
+    return writeFilePromised(this.filename, content);
+  }
+}

server/src/lib/notifiers/NotifierFactory.ts

@@ -3,6 +3,7 @@ import { NotifierConfiguration } from "../configuration/Configuration";
 import { Nodemailer } from "../../../types/Dependencies";
 import { INotifier } from "./INotifier";
 
+import { FileSystemNotifier } from "./FileSystemNotifier";
 import { GMailNotifier } from "./GMailNotifier";
 import { SmtpNotifier } from "./SmtpNotifier";
 
@@ -14,6 +15,9 @@ export class NotifierFactory {
     else if ("smtp" in options) {
       return new SmtpNotifier(options.smtp, nodemailer);
     }
+    else if ("filesystem" in options) {
+      return new FileSystemNotifier(options.filesystem);
+    }
     else {
       throw new Error("No available notifier option detected.");
     }