implement POST message creation

api/message.go

@@ -8,6 +8,8 @@ import (
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/render"
 
+	"github.com/google/uuid"
+
 	"time"
 )
 
@@ -57,6 +59,35 @@ func ListMessages(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
+func newMessageID() string {
+	return "msg_" + uuid.New().String()
+}
+
+func NewMessage(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Invalid request method", http.StatusMethodNotAllowed)
+		return
+	}
+
+	var msg Message
+	err := json.NewDecoder(r.Body).Decode(&msg)
+	if err != nil {
+		http.Error(w, "Invalid JSON", http.StatusBadRequest)
+		return
+	}
+
+	msg.ID = newMessageID()
+
+	msg.Timestamp = time.Now()
+
+	err = dbAddMessage(&msg)
+	if err != nil {
+		render.Render(w, r, ErrRender(err))
+		return
+	}
+
+}
+
 type messageKey struct{}
 
 type Message struct {