This commit fixes a bug in the code that exports subscribers to a CSV
file. This bug caused duplicated entries when exporting subscribers of
dynamic segments. Instead of a given subscriber appearing only once in the
CSV file, they would be included multiple times, and the number of times
would depend on the number of static segments that they had subscribed to.
This bug was caused by a problem in the code that generates the SQL
query used to fetch the subscribers that will be exported. The same
method is used for subscribers not linked to a segment, static
segments, and dynamic segments. The table wp_mailpoet_segments was
included in the query in the three cases, but it should not be included
for dynamic segments as this type of segment does not have a
corresponding entry in this table. Including this table without
specifying a segment ID (as there is not one for dynamic segments),
meant that MySQL would return an extra entry for a given subscriber for
each static segment that they had subscribed to.
[MAILPOET-3900]
This commit refactors the code that handles exporting e-mails opens and
clicks when generating the personal data file to use Doctrine instead of
Paris. I opted to do this in this task as opens and clicks code share
some functionality, and I didn't want to add more code that relies on
Paris, as we are eventually going to remove it.
[MAILPOET-3738]
This commit adds stats about email opens data to the personal data
exported by WP.
To do this, I refactored the code that adds email clicks stats to use
base abstract class with functionality that is shared between both
exporters.
[MAILPOET-3738]
This commit includes information about the user agent used when clicking
links in e-mails to the data that MailPoet exports when the WP tool
"Export Personal Data" is used.
When information about the user agent is not available, the string
'Unknown' is displayed instead.
This information is available under the section "MailPoet Emails
Clicks".
[MAILPOET-3738]
Allow import subscribers with empty confirmed_ip or subscribed_ip when one of the columns is selected in the last step of the import.
Don't allow importing invalid IP addresses - still import the subscriber but remove the invalid IP address.
[MAILPOET-3665]
