Can delete a single conversation message

src/controllers/ConversationsController.ts

@@ -340,6 +340,22 @@ export class ConversationsController {
 		h.success("Conversation message content successfully update");
 	}
 
+	/**
+	 * Delete a conversation message
+	 * 
+	 * @param h Request handler
+	 */
+	public static async DeleteMessage(h: RequestHandler) {
+		const messageID = h.postInt("messageID");
+
+		if(!await ConversationsHelper.IsUserMessageOwner(h.getUserId(), messageID))
+			h.error(401, "You do not own this conversation message!");
+		
+		await ConversationsHelper.DeleteMessageById(messageID);
+
+		h.success("Conversation message has been successfully deleted!");
+	}
+
 	/**
 	 * Get and return safely a conversation ID specified in a $_POST Request
 	 * 

src/controllers/Routes.ts

@@ -74,6 +74,8 @@ export const Routes : Route[] = [
 	{path: "/conversations/delete", cb: (h) => ConversationsController.DeleteConversation(h)},
 
 	{path: "/conversations/updateMessage", cb: (h) => ConversationsController.UpdateMessage(h)},
+
+	{path: "/conversations/deleteMessage", cb: (h) => ConversationsController.DeleteMessage(h)},
 	
 
 	// Search controller

src/helpers/ConversationsHelper.ts

@@ -310,6 +310,26 @@ export class ConversationsHelper {
 		})).map(m => this.DBToConversationMessage(convID, m));
 	}
 
+	/**
+	 * Get information about a single conversation message
+	 * 
+	 * @param messageID The ID of the message to get
+	 * @throws If the message was not found
+	 */
+	private static async GetSingleMessage(messageID: number) : Promise<ConversationMessage> {
+		const row = await DatabaseHelper.QueryRow({
+			table: MESSAGES_TABLE,
+			where: {
+				id: messageID
+			}
+		});
+
+		if(row == null)
+			throw Error("The message was not found!");
+		
+		return this.DBToConversationMessage(row.conv_id, row);
+	}
+
 	/**
 	 * Get older messages of a conversation
 	 * 
@@ -565,6 +585,18 @@ export class ConversationsHelper {
 		await this.RemoveMember(convID, memberID);
 	}
 
+	/**
+	 * Delete a conversation message identified by its ID
+	 * 
+	 * @param id The ID of the message to delete
+	 */
+	public static async DeleteMessageById(id: number) {
+		// Get information about the message
+		const message = await this.GetSingleMessage(id);
+
+		await this.DeleteMessage(message);
+	}
+
 	/**
 	 * Delete a conversation message from the database
 	 *