Fix PaginatedResponse index

CHANGELOG.md

@@ -10,11 +10,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Support from JSON document (require RediSearch 2.2)
 - (dev) GitHub Actions
+- Protection against division by 0
 
 ### Fixed
 
 - (dev) Code coverage with XDebug 3
 - (dev) Defined list of allowed Composer plugins
+- Fix `PaginatedResponse` index (now start at 0, and have a linear progression)
 
 ## [2.0.2]
 

src/Redis/Response/CursorResponse.php

@@ -106,6 +106,10 @@ public function getPageSize(): int
 
     public function getPageCount(): int
     {
+        if (0 === $this->size) {
+            return 0;
+        }
+
         return (int) ceil($this->totalCount / $this->size);
     }
 

src/Redis/Response/PaginatedResponse.php

@@ -96,6 +96,10 @@ public function getPageSize(): int
 
     public function getPageCount(): int
     {
+        if (0 === $this->getPageSize()) {
+            return 0;
+        }
+
         return (int) ceil($this->totalCount / $this->getPageSize());
     }
 
@@ -105,7 +109,7 @@ public function key()
             return 0;
         }
 
-        return (int) ceil(($this->lastCommand->getOffset() ?? 0) / $this->getPageSize()) + 1;
+        return (int) floor(($this->lastCommand->getOffset() ?? 0) / $this->getPageSize());
     }
 
     public function valid()