Merge pull request #95 from neovasky/master

feat(calendar): add comprehensive Calendar app support via CalDAV protocol

Author: cbcoutinho

README.md

@@ -13,6 +13,7 @@ The server provides integration with multiple Nextcloud apps, enabling LLMs to i
 | App | Support Status | Description |
 |-----|----------------|-------------|
 | **Notes** | ✅ Full Support | Create, read, update, delete, and search notes. Handle attachments via WebDAV. |
+| **Calendar** | ✅ Full Support | Complete calendar integration - create, update, delete events. Support for recurring events, reminders, attendees, and all-day events via CalDAV. |
 | **Tables** | ⚠️ Row Operations | Read table schemas and perform CRUD operations on table rows. Table management not yet supported. |
 | **Files (WebDAV)** | ✅ Full Support | Complete file system access - browse directories, read/write files, create/delete resources. |
 
@@ -29,6 +30,22 @@ The server provides integration with multiple Nextcloud apps, enabling LLMs to i
 | `nc_notes_delete_note` | Delete a note by ID |
 | `nc_notes_search_notes` | Search notes by title or content |
 
+### Calendar Tools
+
+| Tool | Description |
+|------|-------------|
+| `nc_calendar_list_calendars` | List all available calendars for the user |
+| `nc_calendar_create_event` | Create a comprehensive calendar event with full feature support (recurring, reminders, attendees, etc.) |
+| `nc_calendar_list_events` | **Enhanced:** List events with advanced filtering (min attendees, duration, categories, status, search across all calendars) |
+| `nc_calendar_get_event` | Get detailed information about a specific event |
+| `nc_calendar_update_event` | Update any aspect of an existing event |
+| `nc_calendar_delete_event` | Delete a calendar event |
+| `nc_calendar_create_meeting` | Quick meeting creation with smart defaults |
+| `nc_calendar_get_upcoming_events` | Get upcoming events in the next N days |
+| `nc_calendar_find_availability` | **New:** Intelligent availability finder - find free time slots for meetings with attendee conflict detection |
+| `nc_calendar_bulk_operations` | **New:** Bulk update, delete, or move events matching filter criteria |
+| `nc_calendar_manage_calendar` | **New:** Create, delete, and manage calendar properties |
+
 ### Tables Tools
 
 | Tool | Description |
@@ -89,6 +106,98 @@ await nc_webdav_write_file("NewProject/docs/notes.md", "# My Notes\n\nContent he
 await nc_webdav_delete_resource("old_file.txt")
 ```
 
+### Calendar Integration
+
+The server provides comprehensive calendar integration through CalDAV, enabling you to:
+
+- List all available calendars
+- Create, read, update, and delete calendar events  
+- Handle recurring events with RRULE support
+- Manage event reminders and notifications
+- Support all-day and timed events
+- Handle attendees and meeting invitations
+- Organize events with categories and priorities
+
+**Usage Examples:**
+
+```python
+# List available calendars
+calendars = await nc_calendar_list_calendars()
+
+# Create a simple event
+await nc_calendar_create_event(
+    calendar_name="personal",
+    title="Team Meeting", 
+    start_datetime="2025-07-28T14:00:00",
+    end_datetime="2025-07-28T15:00:00",
+    description="Weekly team sync",
+    location="Conference Room A"
+)
+
+# Create a recurring weekly meeting
+await nc_calendar_create_event(
+    calendar_name="work",
+    title="Weekly Standup",
+    start_datetime="2025-07-28T09:00:00", 
+    end_datetime="2025-07-28T09:30:00",
+    recurring=True,
+    recurrence_rule="FREQ=WEEKLY;BYDAY=MO"
+)
+
+# Quick meeting creation
+await nc_calendar_create_meeting(
+    title="Client Call",
+    date="2025-07-28",
+    time="15:00",
+    duration_minutes=60,
+    attendees="[email protected],[email protected]"
+)
+
+# Get upcoming events  
+events = await nc_calendar_get_upcoming_events(days_ahead=7)
+
+# Advanced search - find all meetings with 5+ attendees lasting 2+ hours
+long_meetings = await nc_calendar_list_events(
+    calendar_name="",  # Search all calendars
+    search_all_calendars=True,
+    start_date="2025-07-01",
+    end_date="2025-07-31", 
+    min_attendees=5,
+    min_duration_minutes=120,
+    title_contains="meeting"
+)
+
+# Find availability for a 1-hour meeting with specific attendees
+availability = await nc_calendar_find_availability(
+    duration_minutes=60,
+    attendees="[email protected],[email protected]",
+    date_range_start="2025-07-28",
+    date_range_end="2025-08-04",
+    business_hours_only=True,
+    exclude_weekends=True,
+    preferred_times="09:00-12:00,14:00-17:00"
+)
+
+# Bulk update all team meetings to new location
+bulk_result = await nc_calendar_bulk_operations(
+    operation="update",
+    title_contains="team meeting",
+    start_date="2025-08-01", 
+    end_date="2025-08-31",
+    new_location="Conference Room B",
+    new_reminder_minutes=15
+)
+
+# Create a new project calendar
+new_calendar = await nc_calendar_manage_calendar(
+    action="create",
+    calendar_name="project-alpha",
+    display_name="Project Alpha Calendar",
+    description="Calendar for Project Alpha team",
+    color="#FF5722"
+)
+```
+
 ### Note Attachments
 
 This server supports adding and retrieving note attachments via WebDAV. Please note the following behavior regarding attachments:

nextcloud_mcp_server/client/__init__.py

@@ -11,6 +11,7 @@
 from .notes import NotesClient
 from .webdav import WebDAVClient
 from .tables import TablesClient
+from .calendar import CalendarClient
 from ..controllers.notes_search import NotesSearchController
 
 logger = logging.getLogger(__name__)
@@ -46,6 +47,7 @@ def __init__(self, base_url: str, username: str, auth: Auth | None = None):
         self.notes = NotesClient(self._client, username)
         self.webdav = WebDAVClient(self._client, username)
         self.tables = TablesClient(self._client, username)
+        self.calendar = CalendarClient(self._client, username)
 
         # Initialize controllers
         self._notes_search = NotesSearchController()