From bef85d2d919cb983638aa80f561187b61eb157e7 Mon Sep 17 00:00:00 2001
From: Pierre HUBERT <pierre.git@communiquons.org>
Date: Sat, 28 Mar 2020 14:08:47 +0100
Subject: [PATCH] Delete notifications related with a post when deleting it

---
 src/controllers/PostsController.ts |  2 --
 src/helpers/NotificationsHelper.ts | 12 ++++++++++++
 src/helpers/PostsHelper.ts         |  4 ++++
 3 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/src/controllers/PostsController.ts b/src/controllers/PostsController.ts
index d522389..11372f3 100644
--- a/src/controllers/PostsController.ts
+++ b/src/controllers/PostsController.ts
@@ -349,8 +349,6 @@ export class PostsController {
 
 		await PostsHelper.Delete(postID);
 
-		// TODO : delete all the notifications related with the post
-
 		h.success();
 	}
 
diff --git a/src/helpers/NotificationsHelper.ts b/src/helpers/NotificationsHelper.ts
index 0e3003b..768d4d4 100644
--- a/src/helpers/NotificationsHelper.ts
+++ b/src/helpers/NotificationsHelper.ts
@@ -297,6 +297,18 @@ export class NotificationsHelper {
 		}));
 	}
 
+	/**
+	 * Delete all the notification related with a post
+	 * 
+	 * @param postID Target post id
+	 */
+	public static async DeleteAllRelatedWithPost(postID: number) {
+		await this.Delete(new Notif({
+			onElemType: NotifElemType.POST,
+			onElemID: postID
+		}));
+	}
+
 	/**
 	 * Count the number of unread notifications of a user
 	 * 
diff --git a/src/helpers/PostsHelper.ts b/src/helpers/PostsHelper.ts
index c4e8cde..25af8e3 100644
--- a/src/helpers/PostsHelper.ts
+++ b/src/helpers/PostsHelper.ts
@@ -10,6 +10,7 @@ import { CommentsHelper } from "./CommentsHelper";
 import { existsSync, unlinkSync } from "fs";
 import { SurveyHelper } from "./SurveyHelper";
 import { Movie } from "../entities/Movie";
+import { NotificationsHelper } from "./NotificationsHelper";
 
 /**
  * Posts helper
@@ -563,6 +564,9 @@ export class PostsHelper {
 	public static async Delete(postID: number) {
 		const post = await this.GetSingle(postID);
 
+		// Delete all the notifications related with the post
+		await NotificationsHelper.DeleteAllRelatedWithPost(postID);
+
 		// Delete all the likes associated with the post
 		await LikesHelper.DeleteAll(postID, LikesType.POST);