Fixes https://github.com/nextcloud/mail/issues/1391



Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Signed-off-by: Robin Appelman <robin@icewind.nl>

Fixes https://github.com/nextcloud/mail/issues/765



Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Apparently the horde libs do not produce a valid MIME unless you
actually use the 'send' method. Since they fortunatelly have a
null transport with an empty impl, we can use this to have the same
encoding magic going on as we do have in place for actually sending
messages via SMTP. Now drafts stored to IMAP are encoded correctly.

Fixes https://github.com/nextcloud/mail/issues/9



Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

* Move sending logic from controller into its own serivce
* Create service contract/interface to decouple HTTP controller from service implementation
* Decompose logic into multiple small, readable methods
* Wrap data in immutable data classes/objects to prevent long parameter lists and easy testing
* Add basic unit tests that cover the main code paths

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

Signed-off-by: Joas Schilling <coding@schilljs.com>

Signed-off-by: Jan-Christoph Borchardt <hey@jancborchardt.net>

Signed-off-by: Joas Schilling <coding@schilljs.com>