From db9be6bb315297ef83cc3816fd30dabcf7e89a1e Mon Sep 17 00:00:00 2001
From: Pierre HUBERT <pierre.git@communiquons.org>
Date: Sat, 21 Mar 2020 08:40:31 +0100
Subject: [PATCH] Can delete comments

---
 src/entities/Comment.ts       |  4 ++++
 src/helpers/CommentsHelper.ts | 29 ++++++++++++++++++++++++++++-
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/src/entities/Comment.ts b/src/entities/Comment.ts
index 5b3baaa..fa3362c 100644
--- a/src/entities/Comment.ts
+++ b/src/entities/Comment.ts
@@ -36,4 +36,8 @@ export class Comment implements CommentBuilder {
 	get imageURL() : string {
 		return pathUserData(this.imagePath);
 	}
+
+	get imageSysPath() : string {
+		return pathUserData(this.imagePath, true);
+	}
 }
\ No newline at end of file
diff --git a/src/helpers/CommentsHelper.ts b/src/helpers/CommentsHelper.ts
index 2d99428..56d7e2c 100644
--- a/src/helpers/CommentsHelper.ts
+++ b/src/helpers/CommentsHelper.ts
@@ -1,5 +1,7 @@
 import { Comment } from "../entities/Comment";
 import { DatabaseHelper } from "./DatabaseHelper";
+import { unlinkSync, existsSync } from "fs";
+import { LikesHelper, LikesType } from "./LikesHelper";
 
 /**
  * Comments helper
@@ -28,13 +30,38 @@ export class CommentsHelper {
 		return results.map(this.DbToComment);
 	}
 
+	/**
+	 * Permanently delete a comment
+	 * 
+	 * @param comment Information about the comment to delete
+	 */
+	public static async Delete(comment: Comment) {
+
+		// Delete associated image (if any)
+		if(comment.hasImage && existsSync(comment.imageSysPath)) {
+			unlinkSync(comment.imageSysPath);
+		}
+
+		// Delete likes associated with the comment
+		await LikesHelper.DeleteAll(comment.id, LikesType.COMMENT);
+
+		// Delete the comment from the database
+		await DatabaseHelper.DeleteRows(COMMENTS_TABLE, {
+			ID: comment.id
+		})
+	}
+
 	/**
 	 * Delete all the comments associated to a post
 	 * 
 	 * @param postID Target post ID
 	 */
 	public static async DeleteAll(postID: number) {
-		// TODO : implement
+		
+		// Get the comments of the post
+		for(const comment of await this.Get(postID)) {
+			await this.Delete(comment);
+		}
 	}
 
 	/**