diff --git a/assets/style.css b/assets/style.css
index d784e47..7cdae1d 100644
--- a/assets/style.css
+++ b/assets/style.css
@@ -270,7 +270,7 @@ ul.navpage_list {
         display: flex !important;
         max-height: 200px !important;
         width: inherit;
-        box-sizing: border-box;
+        box-sizing: content-box;
         transition-delay: .1s;
     }
     .navsite_item:not(:hover) .navpage_list {
diff --git a/endpoints/upload.php b/endpoints/upload.php
index cf2d47a..4a44a2a 100644
--- a/endpoints/upload.php
+++ b/endpoints/upload.php
@@ -8,7 +8,10 @@ function endpoint($endpoint_data): array
     return match ($endpoint_data["action"]) {
         "getMyFiles" => listFiles(),
         "getAllFiles" => listFiles(false),
-        "UploadFiles" => parseIncomingFiles(),
+        "uploadFiles" => parseIncomingFiles(),
+        "addToGroup" => addToGroup($endpoint_data['group_id'], $endpoint_data['file_id']),
+        "myFileExists" => fileExists($endpoint_data['file_id'], ),
+        "FileExists" => fileExists($endpoint_data['file_id'], false),
         default => ["Status" => "Fail", "message" => "Invalid action"],
     };
 }
\ No newline at end of file
diff --git a/lib/endpoint.php b/lib/endpoint.php
index c9c1b30..c2eb651 100644
--- a/lib/endpoint.php
+++ b/lib/endpoint.php
@@ -24,11 +24,24 @@ function getEndpoint($endpoint_name): string
     $endpoint_file = $routerConfig["endpoint_dir"] . $endpoint_name . ".php";
 
     if (file_exists($endpoint_file)){
-        $output = runEndpoint($endpoint_file);
+        $output_tmp = runEndpoint($endpoint_file);
+        $output["Endpoint"] = $endpoint_name;
+        switch (gettype($output)) {
+            case 'string':
+                $output = $output_tmp;
+                $output['Status'] = 'Success';
+                break;
+            case 'bool':
+                $output['Status'] = $output ? 'Success' : 'Fail';
+                break;
+            default:
+                $output['Status'] = 'Fail';
+                $output["Error"] = "Endpoint error";
+                http_response_code(500);
+        }
     }
     else{
         $output["Error"] = "Not found";
-        $output["Endpoint"] = $endpoint_name;
         http_response_code(404);
     }
 
diff --git a/lib/meme.php b/lib/meme.php
new file mode 100644
index 0000000..f74a4b4
--- /dev/null
+++ b/lib/meme.php
@@ -0,0 +1,18 @@
+<?php
+
+function addMeme(string $memeText, int $imageID): bool
+{
+    global $mysqli;
+    if(fileExists($imageID)){
+        $stmtMemeAdd = $mysqli->prepare('INSERT INTO Memes (AuthorID, TextContent, FileID) VALUES (?, ?, ?)');
+        $stmtMemeAdd->bind_param('isi', $_SESSION['ID'], htmlspecialchars($memeText), $imageID);
+        $stmtMemeAdd->execute();
+        return true;
+    }
+    return false;
+}
+
+function renderMemeGallery() :string
+{
+    return "";
+}
\ No newline at end of file
diff --git a/lib/upload.php b/lib/upload.php
index df125a4..f18aa8b 100644
--- a/lib/upload.php
+++ b/lib/upload.php
@@ -43,7 +43,7 @@ function getIncomingFiles(): array
     return $files3;
 }
 
-function saveUploadedFileInDatabase($filePath, $fileType):bool
+function saveUploadedFileInDatabase($filePath, $fileType): bool
 {
     global $mysqli;
     $stmt = $mysqli->prepare("INSERT INTO Files (Path, Type, UploadedBy, UploadedAt) VALUES (?, ?, ?, NOW())");
@@ -91,20 +91,20 @@ function doImageUpload($inFile, $outFile): bool
     }
 }
 
-function listFiles($onlyMine = true):array
+function listFiles($onlyMine = true): array
 {
     $output = ["Status" => "Fail"];
     require_once "lib/account.php";
-    if(($onlyMine && isLoggedIn()) || (!$onlyMine && isModerator())) {
+    if (($onlyMine && isLoggedIn()) || (!$onlyMine && isModerator())) {
         global $mysqli;
         $query = "SELECT ID, Path, Type, UploadedAt, UploadedBy FROM Files";
 
-        if($onlyMine){
+        if ($onlyMine) {
             $query .= " WHERE UploadedBy = ?";
         }
 
         $stmt = $mysqli->prepare($query);
-        if($onlyMine) {
+        if ($onlyMine) {
             $stmt->bind_param("i", $_SESSION["ID"]);
         }
 
@@ -164,7 +164,7 @@ function parseIncomingFiles(): array
         }
     }
     $output = ["Status" => "Fail"];
-    if($success){
+    if ($success) {
         $output["Status"] = "Success";
     }
     return $output;
@@ -180,10 +180,52 @@ function getUploadPath($type = "unknown", $filename = "hehe"): string
         'image' => 'webp',
         default => 'dummy',
     };
-    if($extension != "dummy") {
+    if ($extension != "dummy") {
         return "uploads/$type/$id/$date/$filename.$extension";
-    }
-    else {
+    } else {
         return "";
     }
+}
+
+function fileExists(int $fileId, bool $onlyMine = true): bool
+{
+    if(!$fileId) {
+        return false;
+    }
+    global $mysqli;
+    if (!$onlyMine && !isAdmin()) {
+        $onlyMine = true;
+    }
+    $query = 'SELECT ID FROM Files WHERE ID = ?' . $onlyMine ? ' AND UploadedBy = ?' : '';
+    $stmtfileexists = $mysqli->prepare($query);
+    if ($onlyMine) {
+        $stmtfileexists->bind_param('ii', $fileId, $_SESSION['id']);
+    } else {
+        $stmtfileexists->bind_param('i', $fileId);
+    }
+    $stmtfileexists->execute();
+    return $stmtfileexists->affected_rows > 0;
+}
+
+function addToGroup(int $groupId, int $fileId): bool
+{
+    $output = ["Status" => "Fail"];
+    if (!$groupId || !$fileId) {
+        return $output;
+    }
+    global $mysqli;
+    $stmtcheck = $mysqli->prepare('SELECT ID FROM FileGroups WHERE CreatorID != ? AND ID = ?');
+    $stmtcheck->bind_param('ii', $_SESSION['id'], $groupId);
+    $stmtcheck->execute();
+    if ($stmtcheck->affected_rows == 0) {
+        if (fileExists($fileId, false)) {
+            $stmtadd = $mysqli->prepare('INSERT INTO FileGroups (FileID, CreatorID, ID) VALUES (?, ?, ?)');
+            $stmtadd->bind_param('iii', $fileId, $_SESSION['id'], $groupId);
+            $stmtadd->execute();
+            if ($stmtadd->affected_rows > 0) {
+                $output["Status"] = "Success";
+            }
+        }
+    }
+    return $output;
 }
\ No newline at end of file