ics

type Address struct {
	Name  string
	Email string
}

type Event struct {
	UID       string    // auto-generated if empty
	Summary   string    // SUMMARY (required)
	Location  string    // LOCATION (optional)
	Start     time.Time // DTSTART (required)
	End       time.Time // DTEND (required)
	Organizer Address   // ORGANIZER
	Attendees []Address // ATTENDEE list (To + Cc, excluding Bcc)
}

type ParsedEvent struct {
	Method       string    // VCALENDAR-level METHOD (REQUEST/REPLY/CANCEL)
	IsLarkDraft  bool      // true when VCALENDAR contains X-LARK-MAIL-DRAFT (Feishu private property indicating the event is editable)
	UID          string    // VEVENT UID
	Summary      string    // VEVENT SUMMARY, RFC 5545 TEXT unescaped
	Location     string    // VEVENT LOCATION, RFC 5545 TEXT unescaped
	Start        time.Time // VEVENT DTSTART
	End          time.Time // VEVENT DTEND
	Organizer    string    // ORGANIZER email (from MAILTO: URI or bare email)
	Attendees    []string  // ATTENDEE emails (from MAILTO: URIs or bare emails)
	OriginalTime int64     // RECURRENCE-ID as Unix seconds, 0 if not present. Used together with UID to derive the Feishu calendar event_id = UID + "_" + OriginalTime.
}