Add option to apply filter actions to existing articles (#7959)

* Add option to apply filter actions to existing articles

* make fix-all

* Fixes

* Another approach with preview
New approach: https://github.com/FreshRSS/FreshRSS/pull/7959/commits/20479475c90ac954b991b3703c3cc76c16aa2d5c

<img width="666" height="202" alt="image" src="https://github.com/user-attachments/assets/bb68ede4-60c8-4e0c-9317-c5ed7a6ad7df" />

Additional improvements:
* Also implemented at category level, and at global level
* Also implemented for favourites at global level

Shortcomings:
* Does not always work reliably with advanced regex, since the DB's flavour is not necessarily the same than PHP's

Related: https://github.com/FreshRSS/FreshRSS/pull/8141

* make fix-all

---------

Co-authored-by: Alexandre Alapetite <alexandre@alapetite.fr>

3 files changed, 67 insertions, 0 deletions

diff --git a/app/Controllers/categoryController.php b/app/Controllers/categoryController.php
index 5ad83e977..2212a158b 100644
--- a/app/Controllers/categoryController.php
+++ b/app/Controllers/categoryController.php
@@ -171,6 +171,30 @@ class FreshRSS_category_Controller extends FreshRSS_ActionController {
 		}
 	}
 
+	public function viewFilterAction(): void {
+		$id = Minz_Request::paramInt('id');
+		if ($id === 0) {
+			Minz_Error::error(400);
+			return;
+		}
+		$filteractions = Minz_Request::paramTextToArray('filteractions_read');
+		$filteractions = array_map(fn(string $action): string => trim($action), $filteractions);
+		$filteractions = array_filter($filteractions, fn(string $action): bool => $action !== '');
+		$search = "c:$id (";
+		foreach ($filteractions as $action) {
+			$search .= "($action) OR ";
+		}
+		$search = preg_replace('/ OR $/', '', $search);
+		$search .= ')';
+		Minz_Request::forward([
+			'c' => 'index',
+			'a' => 'index',
+			'params' => [
+				'search' => $search,
+			],
+		], redirect: true);
+	}
+
 	/**
 	 * This action deletes a category.
 	 * Feeds in the given category are moved in the default category.
diff --git a/app/Controllers/configureController.php b/app/Controllers/configureController.php
index 427fcb584..17c6c20bd 100644
--- a/app/Controllers/configureController.php
+++ b/app/Controllers/configureController.php
@@ -180,6 +180,25 @@ class FreshRSS_configure_Controller extends FreshRSS_ActionController {
 		FreshRSS_View::prependTitle(_t('conf.reading.title') . ' · ');
 	}
 
+	public function viewFilterAction(): void {
+		$search = '';
+		$filters_name = Minz_Request::paramString('filters_name', plaintext: true);
+		$filteractions = Minz_Request::paramTextToArray($filters_name);
+		$filteractions = array_map(fn(string $action): string => trim($action), $filteractions);
+		$filteractions = array_filter($filteractions, fn(string $action): bool => $action !== '');
+		foreach ($filteractions as $action) {
+			$search .= "($action) OR ";
+		}
+		$search = preg_replace('/ OR $/', '', $search);
+		Minz_Request::forward([
+			'c' => 'index',
+			'a' => 'index',
+			'params' => [
+				'search' => $search,
+			],
+		], redirect: true);
+	}
+
 	/**
 	 * This action handles the integration configuration page.
 	 *
diff --git a/app/Controllers/subscriptionController.php b/app/Controllers/subscriptionController.php
index ccd421a41..244a16671 100644
--- a/app/Controllers/subscriptionController.php
+++ b/app/Controllers/subscriptionController.php
@@ -409,6 +409,30 @@ class FreshRSS_subscription_Controller extends FreshRSS_ActionController {
 		}
 	}
 
+	public function viewFilterAction(): void {
+		$id = Minz_Request::paramInt('id');
+		if ($id === 0) {
+			Minz_Error::error(400);
+			return;
+		}
+		$filteractions = Minz_Request::paramTextToArray('filteractions_read');
+		$filteractions = array_map(fn(string $action): string => trim($action), $filteractions);
+		$filteractions = array_filter($filteractions, fn(string $action): bool => $action !== '');
+		$search = "f:$id (";
+		foreach ($filteractions as $action) {
+			$search .= "($action) OR ";
+		}
+		$search = preg_replace('/ OR $/', '', $search);
+		$search .= ')';
+		Minz_Request::forward([
+			'c' => 'index',
+			'a' => 'index',
+			'params' => [
+				'search' => $search,
+			],
+		], redirect: true);
+	}
+
 	/**
 	 * This action displays the bookmarklet page.
 	 */