Migrate to cookie based session (secure cookie)

finish sign-in sign-up

session.go

@@ -0,0 +1,31 @@
+package main
+
+import "github.com/gin-gonic/gin"
+
+func signup(c *gin.Context) {
+	var user UserLogin
+	if err := c.ShouldBind(&user); err != nil {
+		c.HTML(400, "signup.html", err)
+		return
+	}
+	if err := store.Register(user.Email, user.Password); err != nil {
+		c.HTML(400, "signup.html", err)
+		return
+	}
+	signin(c)
+}
+
+func signin(c *gin.Context) {
+	var user UserLogin
+	if err := c.ShouldBind(&user); err != nil {
+		c.HTML(400, "signin.html", err)
+		return
+	}
+	token, err := store.Login(user.Email, user.Password)
+	if err != nil {
+		c.HTML(401, "signin.html", err)
+		return
+	}
+	c.SetCookie("session", token, 60*60*24*7, "", "", false, false)
+	c.Redirect(303, "/dashboard")
+}