Initial

backend/internal/auth/handler.go

@@ -0,0 +1,31 @@
+package auth
+
+import (
+	"net/http"
+	"time"
+)
+
+func SigninSetup(w http.ResponseWriter, cookieName, cookieValue string, expiresAt time.Time, secure bool) {
+	maxAge := expiresAt.Sub(time.Now().UTC())
+	http.SetCookie(w, &http.Cookie{
+		Name:     cookieName,
+		Value:    cookieValue,
+		Path:     "/",
+		HttpOnly: true,
+		SameSite: http.SameSiteLaxMode,
+		Secure:   secure,
+		MaxAge:   int(maxAge.Seconds()),
+	})
+}
+
+func SignoutCleanup(w http.ResponseWriter, cookieName string, secure bool) {
+	http.SetCookie(w, &http.Cookie{
+		Name:     cookieName,
+		Value:    "",
+		Path:     "/",
+		HttpOnly: true,
+		Secure:   secure,
+		SameSite: http.SameSiteLaxMode,
+		MaxAge:   -1,
+	})
+}