From 13c298e51d595d5f01308b93762f7868871fc4e1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=D0=98=D0=B3=D0=BE=D1=80=D1=8C=20=D0=9D=D0=B0=D0=B4=D0=B5?=
 =?UTF-8?q?=D0=B8=D0=BD?= <igor_26reg@mail.ru>
Date: Wed, 11 Feb 2026 11:27:57 +0300
Subject: [PATCH] fix(calendar): prevent empty calendar state from overriding
 legacy mode

- CalendarManager no longer updates state when no calendars found
- Shows friendly message 'Events displayed in classic mode'
- Integration stays uninitialized, uses legacy fetchEventsCombined
- This ensures existing events always visible without Calendar records
---
 backend/static/js/components/calendarManager.js | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/backend/static/js/components/calendarManager.js b/backend/static/js/components/calendarManager.js
index ac5177d7..afc8dc9a 100644
--- a/backend/static/js/components/calendarManager.js
+++ b/backend/static/js/components/calendarManager.js
@@ -42,6 +42,19 @@ export function initCalendarManager(options = {}) {
     try {
       calendars = await getMyCalendars();
       
+      // Если календарей нет - не обновляем состояние (используем legacy режим)
+      if (calendars.length === 0) {
+        console.log('[CalendarManager] No calendars found, keeping legacy mode');
+        container.innerHTML = `
+          <div class="text-center text-muted py-3">
+            <i class="bi-calendar-x mb-2" style="font-size: 2rem;"></i>
+            <p class="mb-0">Календари не настроены</p>
+            <small>События отображаются в классическом режиме</small>
+          </div>
+        `;
+        return;
+      }
+      
       // По умолчанию все календари видимы
       visibleCalendarIds = new Set(calendars.map(cal => cal.id));