implement Scylla database

api/message.go

@@ -65,7 +65,8 @@ func EditMessage(w http.ResponseWriter, r *http.Request) {
 	}
 
 	message.Body = body
-	message.Edited = time.Now()
+	editedTime := time.Now()
+	message.Edited = &editedTime
 
 	err = dbUpdateMessage(message)
 	if err != nil {
@@ -85,7 +86,7 @@ func DeleteMessage(w http.ResponseWriter, r *http.Request) {
 		render.Render(w, r, ErrNotFound)
 		return
 	}
-	dbDeleteMessage(message.ID)
+	dbDeleteMessage(message.ID.String())
 	if err := render.Render(w, r, NewMessageResponse(message)); err != nil {
 		render.Render(w, r, ErrRender(err))
 		return
@@ -104,8 +105,8 @@ func ListMessages(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func newMessageID() string {
-	return "msg_" + uuid.New().String()
+func newMessageID() uuid.UUID {
+	return uuid.New()
 }
 
 func NewMessage(w http.ResponseWriter, r *http.Request) {
@@ -135,7 +136,6 @@ func NewMessage(w http.ResponseWriter, r *http.Request) {
 		UserID:    user.ID,
 		Body:      body,
 		Timestamp: time.Now(),
-		Edited:    time.Time{},
 	}
 
 	err = dbAddMessage(&msg)
@@ -150,11 +150,11 @@ func NewMessage(w http.ResponseWriter, r *http.Request) {
 type messageKey struct{}
 
 type Message struct {
-	ID        string    `json:"id"`
-	UserID    string    `json:"user_id"`
-	Body      string    `json:"body"`
-	Timestamp time.Time `json:"timestamp"`
-	Edited    time.Time `json:"edited"`
+	ID        uuid.UUID  `json:"id"`
+	UserID    uuid.UUID  `json:"user_id"`
+	Body      string     `json:"body"`
+	Timestamp time.Time  `json:"timestamp"`
+	Edited    *time.Time `json:"edited"`
 }
 
 type MessageRequest struct {
@@ -175,8 +175,8 @@ type MessageResponse struct {
 
 func (m MessageResponse) MarshalJSON() ([]byte, error) {
 	type OrderedMessageResponse struct {
-		ID        string       `json:"id"`
-		UserID    string       `json:"user_id"`
+		ID        uuid.UUID    `json:"id"`
+		UserID    uuid.UUID    `json:"user_id"`
 		Body      string       `json:"body"`
 		Timestamp string       `json:"timestamp"`
 		Edited    *string      `json:"edited,omitempty"` // Use a pointer to allow null values
@@ -185,7 +185,7 @@ func (m MessageResponse) MarshalJSON() ([]byte, error) {
 	}
 
 	var edited *string
-	if !m.Message.Edited.IsZero() { // Check if Edited is not the zero value
+	if m.Message.Edited != nil { // Check if Edited is not the zero value
 		editedStr := m.Message.Edited.Format(time.RFC3339)
 		edited = &editedStr
 	}