Using MessageComposer to create invitation emails

[Carl Schwan]

On Wednesday, 19 April 2023 17:42:33 CEST Daniel Vrátil wrote:
> Hi all,

Hi,

> I'm looking at  bug #297956 [0] - invitation emails from KOrganizer do not
> honor signing/encryption preferences.
> 
> Currently iTip messages are built in MailClient in akonadi-calendar repo,
> which is a fairly simplistic and straightforward piece of code.
> 
> After a brief look at how signing/encryption is implemented in KMail it's
> obvious that creating signed/encrypted messages requires non-trivial amount
> of logic and code.
> 
> Luckily most of this code and logic lives in  MessageComposer library inside
> messagelib. It makes a lot of sense to me to reuse this code inside
> akonadi-calendar to generate signed/encrypted iTip messages with behavior
> and UI consistent with KMail. However it requires making akonadi-calendar
> to depend on messagelib, which has non-trivial dependency chain.
> 
> What do you folks think about this? Do you think it's OK to introduce this
> dependency? Or would a simplified sign/encrypt implementation directly in
> akonadi-calendar suffice?

We tried in the last PIM sprint to actually reduce the number of dependencies 
in Kalendar which resulted in splitting some libs in a core/widget parts and 
moving some stuff around.

But Kalendar already depends on mailcommon which depends on messagelib so it 
won't make it worse.

Regarding the encryption handling in messagecomposer I wish this could would 
not depends on QWidgets as it would simplify a few other things in Kalendar as 
well as make it easier to add to akonadi-calendar. I tried to do that in the 
past but converting all the blocking calls from KMessageBox to be more async 
is a bit complicated.

Cheers,
Carl
> 
> Cheers,
> Dan
> 
> [0] https://bugs.kde.org/show_bug.cgi?id=297956