Created package "calls" and verification for frontend and calls

cmd/frontend/verification.go

@@ -0,0 +1,22 @@
+package frontend
+
+import (
+	"html/template"
+	"net/http"
+
+	"github.com/gorilla/sessions"
+	b "streifling.com/jason/cpolis/cmd/backend"
+)
+
+// getSession is used for verifying that the user is logged in and returns their session and an error.
+func getSession(w http.ResponseWriter, r *http.Request, c *b.Config, s *b.CookieStore) (*sessions.Session, error) {
+	session, err := s.Get(r, "cookie")
+	if err != nil {
+		msg := "Session nicht mehr gültig. Bitte erneut anmelden."
+		tmpl, tmplErr := template.ParseFiles(c.WebDir + "/templates/login.html")
+		template.Must(tmpl, tmplErr).ExecuteTemplate(w, "page-content", msg)
+		return nil, err
+	}
+
+	return session, nil
+}