feat(attendee): expose member parameter

Idea and original code by Jonas Heinrich (@onny).

Signed-off-by: Richard Steinmetz <[email protected]>

src/properties/attendeeProperty.js

@@ -2,6 +2,7 @@
  * @copyright Copyright (c) 2019 Georg Ehrke
  *
  * @author Georg Ehrke <[email protected]>
+ * @author Richard Steinmetz <[email protected]>
  *
  * @license AGPL-3.0-or-later
  *
@@ -207,6 +208,25 @@ export default class AttendeeProperty extends Property {
 		this.value = startStringWith(email, 'mailto:')
 	}
 
+	/**
+	 * Gets the email addresses of groups the attendee is a part of
+	 *
+	 * @return {string[]|null} The email addresses of the groups
+	 */
+	get member() {
+		return this.getParameter('MEMBER')?.value ?? null
+	}
+
+	/**
+	 * Sets the email addresses of groups the attendee is a part of
+	 *
+	 * @param {string[]} members The email addresses of the groups
+	 */
+	set member(members) {
+		members = members.map(member => startStringWith(member, 'mailto:'))
+		this.updateParameterIfExist('MEMBER', members)
+	}
+
 	/**
 	 * Is this attendee the organizer?
 	 *

tests/unit/properties/attendeeProperty.test.js

@@ -2,6 +2,7 @@
  * @copyright Copyright (c) 2019 Georg Ehrke
  *
  * @author Georg Ehrke <[email protected]>
+ * @author Richard Steinmetz <[email protected]>
  *
  * @license AGPL-3.0-or-later
  *
@@ -265,6 +266,32 @@ it('AttendeeProperty should provide easy getter/setter for email', () => {
 	expect(property.email).toEqual('mailto:[email protected]')
 })
 
+it('AttendeeProperty should provide easy getter/setter for member', () => {
+	const icalValue = ICAL.Property.fromString('ATTENDEE;MEMBER="mailto:[email protected]","mailto:[email protected]":mailto:[email protected]')
+	const property = AttendeeProperty.fromICALJs(icalValue)
+
+	expect(property.member).toEqual(['mailto:[email protected]', 'mailto:[email protected]'])
+
+	property.member = ['[email protected]']
+	expect(property.member).toEqual(['mailto:[email protected]'])
+
+	property.lock()
+	expect(property.isLocked()).toEqual(true)
+
+	expect(() => {
+		property.member = ['mailto:[email protected]']
+	}).toThrow(ModificationNotAllowedError)
+	expect(property.member).toEqual(['mailto:[email protected]'])
+
+	property.unlock()
+})
+
+it('AttendeeProperty should handle missing member gracefully', () => {
+	const property = new AttendeeProperty('ATTENDEE')
+
+	expect(property.member).toEqual(null)
+})
+
 it('AttendeeProperty should provide easy getter/setter for commonName', () => {
 	const icalValue = ICAL.Property.fromString('ATTENDEE;CN=Foo;PARTSTAT=DECLINED123;LANGUAGE=EN:mailto:[email protected]')
 	const property = AttendeeProperty.fromICALJs(icalValue)