Handle user creation upon registration.

controllers/login.go

@@ -1,8 +1,11 @@
 package controllers
 
 import (
+	"goweb/ent/user"
 	"goweb/msg"
 
+	"golang.org/x/crypto/bcrypt"
+
 	"github.com/labstack/echo/v4"
 )
 
@@ -20,6 +23,27 @@ func (l *Login) Get(c echo.Context) error {
 }
 
 func (l *Login) Post(c echo.Context) error {
-	msg.Danger(c, "Invalid credentials. Please try again.")
+	name := c.FormValue("username")
+	pw := c.FormValue("password")
+
+	if name == "" || pw == "" {
+		msg.Warning(c, "All fields are required.")
+		return l.Get(c)
+	}
+
+	u, err := l.Container.Ent.User.
+		Query().
+		Where(user.Username(name)).
+		First(c.Request().Context())
+
+	if err != nil {
+		c.Logger().Errorf("error querying user during login: %v", err)
+	} else {
+		err = bcrypt.CompareHashAndPassword([]byte(u.Password), []byte(pw))
+		if err != nil {
+			msg.Danger(c, "Invalid credentials. Please try again.")
+		}
+	}
+
 	return l.Get(c)
 }