main.go

@@ -32,7 +32,6 @@ type Message struct {
 	Name      string `json:"Name"`
 	Image     string `json:"Image"`
 	Status    string `json:"Status"`
-	Theme     string `json:"Theme"`
 	Timestamp string `json:"Timestamp"`
 }
 
@@ -45,7 +44,6 @@ type Config struct {
 
 type Client struct {
 	conn *websocket.Conn
-	mu   sync.Mutex
 }
 
 type Server struct {
@@ -112,7 +110,7 @@ func (s *Server) addClient(client *Client) {
 	s.mu.Lock()
 	defer s.mu.Unlock()
 	s.clients[client] = true
-	sendAllRecordsToClient(client)
+	broadcastAllRecordsToClient(client)
 }
 
 func (s *Server) removeClient(client *Client) {
@@ -156,30 +154,62 @@ func (s *Server) handleConnections(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func broadcastSingleRecord(s *Server, message Message) {
+func broadcastAllRecords(s *Server) {
+	allRecords, err := fetchAllRecords()
+	if err != nil {
+		log.Println("Error fetching all records:", err)
+	}
+	if len(allRecords) > 0 {
+		var message Message
+		for _, msgContent := range allRecords {
+			err = json.Unmarshal([]byte(msgContent), &message)
+			if err != nil {
+				log.Println("Unable to marshal JSON due to: ", err)
+			}
+			fmt.Printf("Broadcasting %s,%s,%s,%s to %d clients\n", message.Id, message.Status, message.Name, message.Timestamp, len(s.clients))
+
 			for client := range s.clients {
-		sendMessageToClient(client, message)
+				if err := client.conn.WriteMessage(websocket.TextMessage, []byte(msgContent)); err != nil {
+					log.Println("Failed to broadcast update:", err)
+				}
+			}
+		}
 	}
 }
 
-func sendMessageToClient(client *Client, message Message) {
+func broadcastRemovedRecords(s *Server, message Message) {
 	var msgJSON, err = json.Marshal(message)
 	if err != nil {
 		log.Println("Error marshalling json:", err)
 		return
 	}
-	go sendToClient(client, msgJSON)
-}
+	fmt.Printf("Broadcasting removal: %s,%s,%s,%s to %d clients\n", message.Id, message.Status, message.Name, message.Timestamp, len(s.clients))
 
-func sendToClient(client *Client, msgJSON []byte) {
-	client.mu.Lock()
-	defer client.mu.Unlock()
+	for client := range s.clients {
 		if err := client.conn.WriteMessage(websocket.TextMessage, msgJSON); err != nil {
-		log.Println("Failed to send message to client:", err)
+			log.Println("Failed to broadcast update:", err)
+			return
+		}
 	}
 }
 
-func sendAllRecordsToClient(client *Client) {
+func broadcastExpiredRecords(s *Server, removed string) {
+	var message = Message{Id: removed, Name: "", Image: "", Status: "removed", Timestamp: ""}
+	var msgJSON, err = json.Marshal(message)
+	if err != nil {
+		log.Println("Error marshalling json:", err)
+		return
+	}
+	fmt.Printf("Broadcasting expiration: %s to %d clients\n", string(msgJSON), len(s.clients))
+	for client := range s.clients {
+		if err := client.conn.WriteMessage(websocket.TextMessage, msgJSON); err != nil {
+			log.Println("Failed to broadcast update:", err)
+			return
+		}
+	}
+}
+
+func broadcastAllRecordsToClient(c *Client) {
 	allRecords, err := fetchAllRecords()
 	if err != nil {
 		log.Println("Error fetching all records:", err)
@@ -191,8 +221,10 @@ func sendAllRecordsToClient(client *Client) {
 		if err != nil {
 			log.Println("Unable to marshal JSON due to: ", err)
 		}
-		fmt.Printf("Broadcasting %s,%s,%s,%s,%s\n", message.Id, message.Status, message.Name, message.Theme, message.Timestamp)
-		go sendToClient(client, []byte(msgContent))
+		fmt.Printf("Broadcasting %s,%s,%s,%s\n", message.Id, message.Status, message.Name, message.Timestamp)
+		if err := c.conn.WriteMessage(websocket.TextMessage, []byte(msgContent)); err != nil {
+			log.Println("Failed to broadcast update:", err)
+		}
 	}
 }
 
@@ -201,7 +233,7 @@ func (s *Server) listenForExpirationEvents() {
 	defer func(ps *redis.PubSub) {
 		err := ps.Close()
 		if err != nil {
-			log.Println("Error closing redis pubsub:", err)
+
 		}
 	}(ps)
 
@@ -210,9 +242,8 @@ func (s *Server) listenForExpirationEvents() {
 		expiredID := msg.Payload
 		fmt.Println(expiredID)
 		// Broadcast expiration event
-		var message = Message{Id: expiredID, Name: "", Image: "", Status: "removed", Theme: "", Timestamp: ""}
-		fmt.Printf("Broadcasting expiration: %s to %d clients\n", message, len(s.clients))
-		broadcastSingleRecord(s, message)
+		broadcastExpiredRecords(s, expiredID)
+		fmt.Printf("Done Broadcasting Expiration\n")
 	}
 }
 
@@ -232,10 +263,12 @@ func fetchAllRecords() (map[string]string, error) {
 		}
 		records[key] = value
 	}
+
 	return records, nil
 }
 
-func getState(w http.ResponseWriter, r *http.Request) {
+/*
+	func getState(w http.ResponseWriter, r *http.Request) {
 		if r.Method != http.MethodPost {
 			http.Error(w, "Only POST method is allowed", http.StatusMethodNotAllowed)
 			return
@@ -251,7 +284,7 @@ func getState(w http.ResponseWriter, r *http.Request) {
 			http.Error(w, "Invalid JSON format", http.StatusBadRequest)
 			return
 		}
-	fmt.Println(request)
+
 		if request.Id == "" {
 			fmt.Println("Missing or empty Id field")
 			http.Error(w, "Missing or empty Id field", http.StatusBadRequest)
@@ -286,8 +319,8 @@ func getState(w http.ResponseWriter, r *http.Request) {
 		if err != nil {
 			http.Error(w, "Failed to encode response", http.StatusInternalServerError)
 		}
-}
-
+	}
+*/
 func setState(w http.ResponseWriter, r *http.Request, s *Server) {
 	if r.Method != http.MethodPost {
 		http.Error(w, "Only POST method is allowed", http.StatusMethodNotAllowed)
@@ -307,13 +340,17 @@ func setState(w http.ResponseWriter, r *http.Request, s *Server) {
 			http.Error(w, "Failed to delete key from Redis", http.StatusInternalServerError)
 			return
 		}
-		fmt.Printf("Broadcasting removal: %s,%s,%s,%s to %d clients\n", message.Id, message.Status, message.Name, message.Timestamp, len(s.clients))
-	} else {
+		broadcastRemovedRecords(s, message)
+		w.WriteHeader(http.StatusOK)
+		return
+	}
+
 	msgJSON, err := json.Marshal(message)
 	if err != nil {
 		http.Error(w, "Failed to encode message", http.StatusInternalServerError)
 		return
 	}
+
 	timeout := 20 * time.Second
 	err = redisClient.Set(ctx, message.Id, msgJSON, timeout).Err()
 	if err != nil {
@@ -321,10 +358,8 @@ func setState(w http.ResponseWriter, r *http.Request, s *Server) {
 		http.Error(w, "Failed to store data", http.StatusInternalServerError)
 		return
 	}
-		fmt.Printf("Broadcasting message: %s,%s,%s,%s,%s to %d clients\n", message.Id, message.Status, message.Name, message.Theme, message.Timestamp, len(s.clients))
-	}
 
-	broadcastSingleRecord(s, message)
+	broadcastAllRecords(s)
 	w.WriteHeader(http.StatusOK)
 }
 
@@ -385,7 +420,7 @@ func main() {
 
 	// Register routes on the mux router
 	router.HandleFunc("/ws", server.handleConnections).Methods("GET")
-	router.HandleFunc("/get", getState).Methods("POST")
+	//router.HandleFunc("/get", getState).Methods("POST")
 	router.HandleFunc("/set", func(w http.ResponseWriter, r *http.Request) {
 		setState(w, r, server)
 	}).Methods("POST")