API support edit multiple tags (#7060)

* API support edit multiple tags
fix https://github.com/FreshRSS/FreshRSS/issues/7057

* Doc typo

p/api/greader.php

@@ -785,9 +785,11 @@ final class GReaderAPI {
 	}
 
 	/**
-	 * @param array<string> $e_ids
+	 * @param array<string> $e_ids IDs of the items to edit
+	 * @param array<string> $as tags to add to all the listed items
+	 * @param array<string> $rs tags to remove from all the listed items
 	 */
-	private static function editTag(array $e_ids, string $a, string $r): never {
+	private static function editTag(array $e_ids, array $as, array $rs): never {
 		foreach ($e_ids as $i => $e_id) {
 			if (!ctype_digit($e_id) || $e_id[0] === '0') {
 				$e_ids[$i] = hex2dec(basename($e_id));	//Strip prefix 'tag:google.com,2005:reader/item/'
@@ -798,64 +800,73 @@ final class GReaderAPI {
 		$entryDAO = FreshRSS_Factory::createEntryDao();
 		$tagDAO = FreshRSS_Factory::createTagDao();
 
-		switch ($a) {
-			case 'user/-/state/com.google/read':
-				$entryDAO->markRead($e_ids, true);
-				break;
-			case 'user/-/state/com.google/starred':
-				$entryDAO->markFavorite($e_ids, true);
-				break;
-			/*case 'user/-/state/com.google/tracking-kept-unread':
-				break;
-			case 'user/-/state/com.google/like':
-				break;
-			case 'user/-/state/com.google/broadcast':
-				break;*/
-			default:
-				$tagName = '';
-				if (str_starts_with($a, 'user/-/label/')) {
-					$tagName = substr($a, 13);
-				} else {
-					$user = Minz_User::name() ?? '';
-					$prefix = 'user/' . $user . '/label/';
-					if (str_starts_with($a, $prefix)) {
-						$tagName = substr($a, strlen($prefix));
+		foreach ($as as $a) {
+			switch ($a) {
+				case 'user/-/state/com.google/read':
+					$entryDAO->markRead($e_ids, true);
+					break;
+				case 'user/-/state/com.google/starred':
+					$entryDAO->markFavorite($e_ids, true);
+					break;
+				case 'user/-/state/com.google/broadcast':
+				case 'user/-/state/com.google/like':
+				case 'user/-/state/com.google/tracking-kept-unread':
+					// Not supported
+					break;
+				default:
+					$tagName = '';
+					if (str_starts_with($a, 'user/-/label/')) {
+						$tagName = substr($a, 13);
+					} else {
+						$user = Minz_User::name() ?? '';
+						$prefix = 'user/' . $user . '/label/';
+						if (str_starts_with($a, $prefix)) {
+							$tagName = substr($a, strlen($prefix));
+						}
 					}
-				}
-				if ($tagName != '') {
-					$tagName = htmlspecialchars($tagName, ENT_COMPAT, 'UTF-8');
-					$tag = $tagDAO->searchByName($tagName);
-					if ($tag == null) {
-						$tagDAO->addTag(['name' => $tagName]);
+					if ($tagName !== '') {
+						$tagName = htmlspecialchars($tagName, ENT_COMPAT, 'UTF-8');
 						$tag = $tagDAO->searchByName($tagName);
-					}
-					if ($tag != null) {
-						foreach ($e_ids as $e_id) {
-							$tagDAO->tagEntry($tag->id(), $e_id, true);
+						if ($tag === null) {
+							$tagDAO->addTag(['name' => $tagName]);
+							$tag = $tagDAO->searchByName($tagName);
+						}
+						if ($tag !== null) {
+							foreach ($e_ids as $e_id) {
+								$tagDAO->tagEntry($tag->id(), $e_id, true);
+							}
 						}
 					}
-				}
-				break;
+					break;
+			}
 		}
-		switch ($r) {
-			case 'user/-/state/com.google/read':
-				$entryDAO->markRead($e_ids, false);
-				break;
-			case 'user/-/state/com.google/starred':
-				$entryDAO->markFavorite($e_ids, false);
-				break;
-			default:
-				if (str_starts_with($r, 'user/-/label/')) {
-					$tagName = substr($r, 13);
-					$tagName = htmlspecialchars($tagName, ENT_COMPAT, 'UTF-8');
-					$tag = $tagDAO->searchByName($tagName);
-					if ($tag != null) {
-						foreach ($e_ids as $e_id) {
-							$tagDAO->tagEntry($tag->id(), $e_id, false);
+
+		foreach ($rs as $r) {
+			switch ($r) {
+				case 'user/-/state/com.google/read':
+					$entryDAO->markRead($e_ids, false);
+					break;
+				case 'user/-/state/com.google/starred':
+					$entryDAO->markFavorite($e_ids, false);
+					break;
+				case 'user/-/state/com.google/broadcast':
+				case 'user/-/state/com.google/like':
+				case 'user/-/state/com.google/tracking-kept-unread':
+					// Not supported
+					break;
+				default:
+					if (str_starts_with($r, 'user/-/label/')) {
+						$tagName = substr($r, 13);
+						$tagName = htmlspecialchars($tagName, ENT_COMPAT, 'UTF-8');
+						$tag = $tagDAO->searchByName($tagName);
+						if ($tag !== null) {
+							foreach ($e_ids as $e_id) {
+								$tagDAO->tagEntry($tag->id(), $e_id, false);
+							}
 						}
 					}
-				}
-				break;
+					break;
+			}
 		}
 
 		exit('OK');
@@ -1153,10 +1164,12 @@ final class GReaderAPI {
 				case 'edit-tag':	//http://blog.martindoms.com/2010/01/20/using-the-google-reader-api-part-3/
 					$token = isset($_POST['T']) ? trim($_POST['T']) : '';
 					self::checkToken(FreshRSS_Context::userConf(), $token);
-					$a = $_POST['a'] ?? '';	//Add:	user/-/state/com.google/read	user/-/state/com.google/starred
-					$r = $_POST['r'] ?? '';	//Remove:	user/-/state/com.google/read	user/-/state/com.google/starred
+					// Add (Can be repeated to add multiple tags at once):	user/-/state/com.google/read	user/-/state/com.google/starred
+					$as = multiplePosts('a');
+					// Remove (Can be repeated to remove multiple tags at once):	user/-/state/com.google/read	user/-/state/com.google/starred
+					$rs = multiplePosts('r');
 					$e_ids = multiplePosts('i');	//item IDs
-					self::editTag($e_ids, $a, $r);
+					self::editTag($e_ids, $as, $rs);
 					// Always exits
 				case 'rename-tag':	//https://github.com/theoldreader/api
 					$token = isset($_POST['T']) ? trim($_POST['T']) : '';