Filter on last user modified (#8093)

Example: `userdate:PT1H` to select only articles modified by user during the last hour
Fix https://github.com/FreshRSS/FreshRSS/issues/4280#issuecomment-3393078024

Useful for instance to bulk mark as unread recently marked articles by error:
1. Click on the toggle button to show the read articles (making sure the toggle for the unread articles is off)
2. Sort by *User modified 9→1*
3. Filter by *user modified date*, for instance to the last 3 hours by typing `userdate:PT3H`
4. Click in the drop-down menu *Mark selection as unread*

P.S.: I have added at the same time a bunch of unit tests for date-related logic

1 files changed, 12 insertions, 0 deletions

diff --git a/app/Models/Entry.php b/app/Models/Entry.php
index 1f99a8345..296c3860f 100644
--- a/app/Models/Entry.php
+++ b/app/Models/Entry.php
@@ -654,6 +654,18 @@ HTML;
 				if ($ok && $filter->getNotMaxPubdate() !== null) {
 					$ok &= $this->date > $filter->getNotMaxPubdate();
 				}
+				if ($ok && $filter->getMinUserdate() !== null) {
+					$ok &= $this->lastUserModified >= $filter->getMinUserdate();
+				}
+				if ($ok && $filter->getNotMinUserdate() !== null) {
+					$ok &= $this->lastUserModified < $filter->getNotMinUserdate();
+				}
+				if ($ok && $filter->getMaxUserdate() !== null) {
+					$ok &= $this->lastUserModified <= $filter->getMaxUserdate();
+				}
+				if ($ok && $filter->getNotMaxUserdate() !== null) {
+					$ok &= $this->lastUserModified > $filter->getNotMaxUserdate();
+				}
 				if ($ok && $filter->getFeedIds() !== null) {
 					$ok &= in_array($this->feedId, $filter->getFeedIds(), true);
 				}