added frontend that can play very bare bones

internal/rest_handler/create_user.go

@@ -29,8 +29,14 @@ func CreateUser(c echo.Context) error {
 	if err != nil {
 		return c.String(http.StatusBadRequest, err.Error())
 	}
-	user := game.NewUser(bodyContent.Name, pub)
-	session.AddUser(user)
 
-	return c.JSON(http.StatusOK, user)
+	user := session.AddUser(game.User{
+		Name: bodyContent.Name,
+		PublicKey: pub,
+	})
+
+	return c.JSON(http.StatusOK, ResponseData{
+		Session: session,
+		User: user,
+	})
 }

internal/rest_handler/guess_letter.go

@@ -32,5 +32,8 @@ func GuessLetter(c echo.Context) error {
 		return c.String(http.StatusBadRequest, err.Error())
 	}
 
-	return c.JSON(http.StatusOK, session)
+	return c.JSON(http.StatusOK, ResponseData{
+		User: user,
+		Session: session,
+	})
 }

internal/rest_handler/helper.go

@@ -8,6 +8,11 @@ import (
 	"github.com/labstack/echo/v4"
 )
 
+type ResponseData struct{
+	Session *game.Session
+	User *game.User
+}
+
 func GetData(c echo.Context) (*game.Session, *game.User, error) {
 	session, err := game.GetSession(c.Param("session"))
 	if err != nil {