fix(ShareAPI): Send mails for mail shares by default

[nfebe]

Summary

It looks like, the frontend it needs to provide the sendMail param for the backend to decide whether mails would be sent.

Our UI does not have that at the moment so it should default to sending emails always for mail shares.

Not exactly sure how this was handled earlier but this is a good starting point.

Resolves : #48012

Checklist

• Backports requested where applicable (ex: critical bugfixes)

[provokateurin]

Fix makes sense, curious how it broke though.

[nfebe]

/backport to stable30

[provokateurin]

Why rebase it so often?

[nfebe]

Why rebase it so often?

Some tests that seem unrelated (cypress especially are failing consistently)...

Re-basing triggers a rerun, but also adds the latest updates on master in case something that broke the tests has been resolved. (Because a bunch of other PRs are failing tests too)...

Now taking a closer to see if something is indeed broken.

[nfebe]

This breaks "File Requests"

server/apps/files_sharing/lib/Controller/ShareAPIController.php

Lines 721 to 727 in 363ba6b

	if (is_string($shareWith) && $shareType === IShare::TYPE_EMAIL) {
	// If sending a mail have been requested, validate the mail address
	if ($share->getMailSend() && !$this->mailer->validateMailAddress($shareWith)) {
	thrownewOCSNotFoundException($this->l->t('Please specify a valid email address'));
	}
	$share->setSharedWith($shareWith);
	}

Why?

• File requests are sent with an empty string for shareWith which the backend uses to check if a shareWith value is available (poorly so)
• The file requests shareType is 4, which is mail share and I am not sure why that is.

[provokateurin]

Oops

[nfebe]

/compile

[susnux]

and what about other things that use the API without specifying what goes to sendMail???

Agree, we can not change default behavior as this would be a breaking change.

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