Import ics files from attachments (mail app)

[murilopereirame]

As a user I want to be able to import calendar events sent from other apps and services with a single click.

AC

• When receiving an event as attachment, and the user clicks the attachment, a preview is displayed with a "Add to calendar" button
• "Add to calendar" button stores the event into the default calendar
• If there's more than one event, we show the preview bubble with a text informing the user that the file has multiple event and if they want to import them all

Notes:

Check what is the best user experience and give recommendations how to implement it?

Option 1. Add "import" action to attachment pop up. A new dialog appears showing the content of the events.

Option 2. Open event editor with "Open" action.

Option 3: Show event preview directly when pressing attachment. similar to "view event" action for calendar invites. see https://github.com/tutao/tutanota/issues/7085

How to deal with multi event files?

Original idea

Since we have .vcf import direct from attachments and also when we share them with Tuta app, would be nice to have the same for .ics files and import them directly to my calendar.