From 869fb9691f877116d5b15a92de006d0daf4d70e5 Mon Sep 17 00:00:00 2001
From: René 'Necoro' Neumann <necoro@necoro.eu>
Date: Thu, 17 Oct 2024 00:27:08 +0200
Subject: Restructure and change to chi as muxing framework

---
 session/session.go | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 session/session.go

(limited to 'session/session.go')

diff --git a/session/session.go b/session/session.go
new file mode 100644
index 0000000..5ffd5cd
--- /dev/null
+++ b/session/session.go
@@ -0,0 +1,87 @@
+package session
+
+import (
+	"context"
+	"encoding/gob"
+	"log"
+	"net/http"
+	"os"
+
+	"github.com/gorilla/securecookie"
+	"github.com/gorilla/sessions"
+)
+
+type sessionContextKey struct{}
+
+const (
+	sessionCookie = "sessionKeks"
+	dataKey       = "data"
+)
+
+func init() {
+	gob.Register(sessionData{})
+}
+
+type Session struct {
+	*sessionData
+	s *sessions.Session
+}
+
+type sessionData struct {
+	UserID        int32
+	Authenticated bool
+}
+
+func (s *Session) Save(w http.ResponseWriter, r *http.Request) {
+	s.s.Values[dataKey] = *s.sessionData
+	if err := s.s.Save(r, w); err != nil {
+		log.Panic("Storing session: ", err)
+	}
+}
+
+func (s *Session) MaxAge(maxAge int) {
+	s.s.Options.MaxAge = maxAge
+}
+
+func (s *Session) Invalidate() {
+	s.MaxAge(-1)
+	s.Authenticated = false
+}
+
+func (s *Session) IsNew() bool {
+	return s.s.IsNew
+}
+
+// From extracts the `Session` from the `Request`.
+func From(r *http.Request) Session {
+	s := r.Context().Value(sessionContextKey{}).(*sessions.Session)
+	s.Options.HttpOnly = true
+
+	sd, ok := s.Values[dataKey].(sessionData)
+	if !ok {
+		sd = sessionData{}
+	}
+	return Session{&sd, s}
+}
+
+func Handler() func(next http.Handler) http.Handler {
+	var key []byte
+
+	if envKey := os.Getenv("GOSTEN_SECRET"); len(envKey) >= 32 {
+		key = []byte(envKey)
+	} else {
+		key = securecookie.GenerateRandomKey(32)
+	}
+
+	sessionStore := sessions.NewCookieStore(key)
+
+	return func(next http.Handler) http.Handler {
+		fn := func(w http.ResponseWriter, r *http.Request) {
+			session, _ := sessionStore.Get(r, sessionCookie)
+
+			ctx := context.WithValue(r.Context(), sessionContextKey{}, session)
+			next.ServeHTTP(w, r.WithContext(ctx))
+		}
+		return http.HandlerFunc(fn)
+	}
+}
-- 
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