Add calendar implementation: models, storage, CLI

storage.py

@@ -0,0 +1,44 @@
+import json
+import os
+from typing import List
+from models import Event
+
+DATA_FILE = "calendar_data.json"
+
+def load_events() -> List[Event]:
+    """Загружает события из JSON файла"""
+    if not os.path.exists(DATA_FILE):
+        return []
+    
+    try:
+        with open(DATA_FILE, 'r', encoding='utf-8') as f:
+            data = json.load(f)
+            return [Event.from_dict(item) for item in data]
+    except (json.JSONDecodeError, FileNotFoundError):
+        return []
+
+def save_events(events: List[Event]) -> None:
+    """Сохраняет события в JSON файл"""
+    with open(DATA_FILE, 'w', encoding='utf-8') as f:
+        data = [event.to_dict() for event in events]
+        json.dump(data, f, ensure_ascii=False, indent=2)
+
+def add_event(event: Event) -> None:
+    """Добавляет новое событие"""
+    events = load_events()
+    events.append(event)
+    save_events(events)
+
+def remove_event(index: int) -> bool:
+    """Удаляет событие по индексу (начиная с 0)"""
+    events = load_events()
+    if 0 <= index < len(events):
+        del events[index]
+        save_events(events)
+        return True
+    return False
+
+def get_events_by_date(date: str) -> List[Event]:
+    """Возвращает события на конкретную дату"""
+    events = load_events()
+    return [e for e in events if e.date == date]