Can be automatically be notified of comments creation

src/controllers/CommentsController.ts

@@ -6,6 +6,7 @@ import { time } from "../utils/DateUtils";
 import { CommentsHelper } from "../helpers/CommentsHelper";
 import { NotifEventType } from "../entities/Notification";
 import { NotificationsHelper } from "../helpers/NotificationsHelper";
+import { AbstractUserConnectionContainer } from "../entities/UserConnectionContainer";
 
 /**
  * Comments controller
@@ -145,7 +146,7 @@ export class CommentsController {
 	 * @param h Request handler
 	 * @param c Comment
 	 */
-	public static async CommentToAPI(h: RequestHandler, c: Comment) : Promise<any> {
+	public static async CommentToAPI(h: AbstractUserConnectionContainer, c: Comment) : Promise<any> {
 		return {
 			ID: c.id,
 			userID: c.userID,

src/controllers/UserWebSocketActions.ts

@@ -13,6 +13,9 @@ import { EventsHelper } from "../helpers/EventsHelper";
 import { ConversationMessage } from "../entities/ConversationMessage";
 import { ConversationsController } from "./ConversationsController";
 import { PostAccessLevel } from "../entities/Post";
+import { Comment } from "../entities/Comment";
+import { CommentsController } from "./CommentsController";
+import { AbritraryUserConnection } from "../entities/UserConnectionContainer";
 
 export class UserWebSocketActions {
 
@@ -122,7 +125,7 @@ export class UserWebSocketActions {
 		for(const client of UserWebSocketController.active_clients.filter(
 			(e) => e.registeredConversations.has(msg.convID))) {
 
-			UserWebSocketController.Send(client.userID, client.socketID, new WsMessage({
+			UserWebSocketController.SendToClient(client, new WsMessage({
 				id: "",
 				title: "new_conv_message",
 				data: ConversationsController.ConversationMessageToAPI(msg)
@@ -132,6 +135,24 @@ export class UserWebSocketActions {
 		}
 
 	}
+
+	/**
+	 * Propagate the creation of a new comment
+	 * 
+	 * @param c New comment
+	 */
+	public static async CreatedNewComment(c: Comment) {	
+
+		for(const client of UserWebSocketController.active_clients.filter((e) => e.registeredPosts.has(c.postID))) {
+
+			UserWebSocketController.SendToClient(client, new WsMessage({
+				id: "",
+				title: "new_comment",
+				data: await CommentsController.CommentToAPI(new AbritraryUserConnection(client.userID), c)
+			}))
+
+		}
+	}
 }
 
 
@@ -143,3 +164,6 @@ EventsHelper.Listen("updated_number_unread_conversations", async (e) => await Us
 
 // When a new message is sent
 EventsHelper.Listen("sent_conversation_message", async (e) => await UserWebSocketActions.SentNewConversationMessage(e.msg));
+
+// When a comment is created
+EventsHelper.Listen("comment_created", async (e) => await UserWebSocketActions.CreatedNewComment(e.comment))

src/controllers/UserWebSocketController.ts

@@ -221,11 +221,21 @@ export class UserWebSocketController {
 			(e) => e.userID == userID
 				&& (socketID.length == 0 || e.socketID == socketID)))
 		{
-			if(entry.ws.readyState == ws.OPEN)
-				entry.ws.send(JSON.stringify(message));
+			this.SendToClient(entry, message);
 		}
 	}
 
+	/**
+	 * Send a message to a specific client
+	 * 
+	 * @param client Target client
+	 * @param message The message to send
+	 */
+	public static SendToClient(client: ActiveClient, message: WsMessage) {
+		if(client.ws.readyState == ws.OPEN)
+			client.ws.send(JSON.stringify(message));
+	}
+
 	/**
 	 * Check out whether a user has an active websocket or not
 	 * 

src/entities/BaseRequestsHandler.ts

@@ -15,8 +15,9 @@ import { PostAccessLevel } from "./Post";
 import { CommentsHelper } from "../helpers/CommentsHelper";
 import { checkVirtualDirectory } from "../utils/VirtualDirsUtils";
 import { ConversationsHelper } from "../helpers/ConversationsHelper";
+import { AbstractUserConnectionContainer } from "./UserConnectionContainer";
 
-export abstract class BaseRequestsHandler {
+export abstract class BaseRequestsHandler implements AbstractUserConnectionContainer {
 
 	protected abstract get userID() : number;
 

src/entities/UserConnectionContainer.ts

@@ -0,0 +1,29 @@
+/**
+ * Simple user connection container
+ * 
+ * @author Pierre Hubert
+ */
+
+export abstract class  AbstractUserConnectionContainer {
+	public abstract getUserId() : number;
+	public abstract get signedIn() : boolean;
+}
+
+/**
+ * Fake user connnection checker used for notifications in WebSockets
+ */
+export class AbritraryUserConnection implements AbstractUserConnectionContainer {
+	
+	constructor(private userID: number) {}
+	
+	public getUserId(): number {
+		if(!this.signedIn)
+			throw new Error("User is not signed in!");
+
+		return this.userID;
+	}
+	public get signedIn(): boolean {
+		return this.userID > 0;
+	}
+
+}

src/helpers/CommentsHelper.ts

@@ -3,6 +3,7 @@ import { DatabaseHelper } from "./DatabaseHelper";
 import { unlinkSync, existsSync } from "fs";
 import { LikesHelper, LikesType } from "./LikesHelper";
 import { mysql_date, time } from "../utils/DateUtils";
+import { EventsHelper } from "./EventsHelper";
 
 /**
  * Comments helper
@@ -20,7 +21,7 @@ export class CommentsHelper {
 	 * @param comment Information about the comment to create
 	 */
 	public static async Create(comment: Comment) : Promise<number> {
-		return await DatabaseHelper.InsertRow(COMMENTS_TABLE, {
+		const commentID = await DatabaseHelper.InsertRow(COMMENTS_TABLE, {
 			ID_texte: comment.postID,
 			ID_personne: comment.userID,
 			date_envoi: mysql_date(),
@@ -28,6 +29,14 @@ export class CommentsHelper {
 			commentaire: comment.content,
 			image_commentaire: comment.hasImage ? comment.imagePath : ""
 		});
+
+		// Propagate event
+		comment.id = commentID;
+		await EventsHelper.Emit("comment_created", {
+			comment: comment
+		});
+
+		return commentID
 	}
 
 	/**

src/helpers/EventsHelper.ts

@@ -1,5 +1,6 @@
 import { APIClient } from "../entities/APIClient";
 import { ConversationMessage } from "../entities/ConversationMessage";
+import { Comment } from "../entities/Comment";
 
 /**
  * Events manager
@@ -28,6 +29,11 @@ export interface SentNewConversationMessageEvent {
 	msg: ConversationMessage
 }
 
+// When a comment is created
+export interface CommentCreatedEvent {
+	comment: Comment
+}
+
 /**
  * Global map of all possible events
  */
@@ -35,7 +41,8 @@ export interface EventsMap {
 	"destroyed_login_tokens": DestroyedLoginTokensEvent,
 	"updated_number_notifications": UpdatedNotificationsNumberEvent,
 	"updated_number_unread_conversations": UpdateNumberUnreadConversationsEvent,
-	"sent_conversation_message": SentNewConversationMessageEvent
+	"sent_conversation_message": SentNewConversationMessageEvent,
+	"comment_created": CommentCreatedEvent
 }
 
 export class EventsHelper {