# Initial Concept
`silverbullet-icalendar` is a Plug for SilverBullet that reads external iCalendar data (.ics format) and integrates it into the SilverBullet environment.

# Product Definition - SilverBullet iCalendar Plug

## Vision
A reliable and seamless bridge between external iCalendar services and the SilverBullet knowledge management environment, enabling users to consolidate their scheduling data within their personal workspace.

## Target Audience
- SilverBullet users who need to integrate external calendars (Google, Nextcloud, Outlook, etc.) directly into their notes and queries.

## Core Goals & Features
- **Reliable Multi-Source Synchronization:** Support for fetching and parsing `.ics` data from various providers like Google Calendar and Nextcloud.
- **SilverBullet Index Integration:** Seamlessly index calendar events using the `ical-event` tag, making them instantly queryable using SilverBullet's Lua Integrated Query (LIQ).
- **Robust Timezone Handling:** Accurate conversion and shifting of event times to ensure consistency regardless of the source provider's configuration.
- **Cache Management:** Efficient local caching of calendar data with user-configurable durations and force-sync capabilities.
- **Clean Indexing:** Sanitization of complex iCalendar objects into flat, query-friendly metadata.

## Technology Stack (Inferred)
- **Language:** TypeScript
- **Runtime:** Deno
- **Platform:** SilverBullet Plug API
- **Parsing Library:** `ts-ics`