func ensureSessionID()

in src/frontend/middleware.go [85:111]

• 26 lines of code
• 4 McCabe index (conditional complexity)

func ensureSessionID(next http.Handler) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		var sessionID string
		c, err := r.Cookie(cookieSessionID)
		if err == http.ErrNoCookie {
			if os.Getenv("ENABLE_SINGLE_SHARED_SESSION") == "true" {
				// Hard coded user id, shared across sessions
				sessionID = "12345678-1234-1234-1234-123456789123"
			} else {
				u, _ := uuid.NewRandom()
				sessionID = u.String()
			}
			http.SetCookie(w, &http.Cookie{
				Name:   cookieSessionID,
				Value:  sessionID,
				MaxAge: cookieMaxAge,
			})
		} else if err != nil {
			return
		} else {
			sessionID = c.Value
		}
		ctx := context.WithValue(r.Context(), ctxKeySessionID{}, sessionID)
		r = r.WithContext(ctx)
		next.ServeHTTP(w, r)
	}
}