Manage/DVD list and search and paging

src/Controllers/Manage/ManageDVDController.php

@@ -6,21 +6,34 @@
     use Models\Exceptions\BadRouteException;
     use Models\Exceptions\RouteNotFoundException;
     use Models\QueryModel\DVDQueryModel;
-    use Models\ViewModels\DVDViewModel;
+    use Models\ViewModels\ManageDVDViewModel;
     use Services\DVDService;
-    use Views\Manage\DVD\DVDView;
+    use Views\Manage\DVD\ManageDVDView;
 
     class ManageDVDController
     {
         public function index()
         {
-            $viewModel = new DVDViewModel();
+            $viewModel = new ManageDVDViewModel();
             $service = DVDService::getInstance();
+
             $queryModel = new DVDQueryModel();
-            $queryModel->IsOffered=true;
+            if(!empty($_GET))
+            {
+                $queryModel->setFromQueryString($_GET);
+            }
+            else
+            {
+                header('Location: ' . parse_url($_SERVER["REQUEST_URI"], PHP_URL_PATH)."?".$queryModel->getQueryString(), true, 303);
+                die();
+            }
+
             $viewModel->Query = $queryModel;
             $viewModel->FilteredCount = $service->getDVDCount($queryModel);
-            new DVDView($viewModel);
+            $viewModel->DVDs = $service->getDVDs($queryModel);
+            $viewModel->TotalPages = ceil($viewModel->FilteredCount / $queryModel->Limit);
+            $viewModel->CurrentPage = ($queryModel->Offset / $queryModel->Limit) + 1;
+            new ManageDVDView($viewModel);
         }
 
         /**

src/Models/QueryModel/BaseQueryModel.php

@@ -4,8 +4,8 @@
 {
     class BaseQueryModel
     {
-        public int $limit = 10;
-        public int $offset = 0;
+        public int $Limit = 10;
+        public int $Offset = 0;
     }
 }
 

src/Models/QueryModel/DVDQueryModel.php

@@ -4,7 +4,33 @@
 {
     class DVDQueryModel extends BaseQueryModel
     {
-        public bool|null $IsOffered;
+        public bool|null $IsOffered = null;
+        public string|null $OrderBy = null;
+        public string|null $OrderDesc = null;
+        public string|null $Search = null;
+
+        public function getQueryString(): string
+        {
+            return "IsOffered=$this->IsOffered&".
+                "OrderBy=$this->OrderBy&".
+                "OrderDesc=$this->OrderDesc&".
+                "Search=$this->Search&".
+                "Limit=$this->Limit&".
+                "Offset=$this->Offset";
+        }
+
+        public function setFromQueryString(array $param): void
+        {
+
+            $this->IsOffered = array_key_exists('IsOffered', $param) && $param['IsOffered'] !== ''
+                ? filter_var($param['IsOffered'], FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)
+                : null;
+            $this->OrderBy = $param['OrderBy'] ?? '';
+            $this->OrderDesc = $param['OrderDesc'] ?? '';
+            $this->Search = $param['Search'] ?? '';
+            $this->Limit = isset($param['Limit']) ? (int)$param['Limit'] : 10;
+            $this->Offset = isset($param['Offset']) ? (int)$param['Offset'] : 0;
+        }
     }
 }
 

src/Models/ViewModels/DVDViewModel.php → src/Models/ViewModels/ManageDVDViewModel.php

@@ -6,11 +6,13 @@
     use Interfaces\IViewModel;
     use Models\QueryModel\DVDQueryModel;
 
-    class DVDViewModel implements IViewModel
+    class ManageDVDViewModel implements IViewModel
     {
         public array $DVDs;
         public int $FilteredCount;
         public DVDQueryModel $Query;
+        public int $TotalPages;
+        public int $CurrentPage;
     }
 }
 

src/Services/DVDService.php

@@ -22,10 +22,16 @@ public function getDVDCount(DVDQueryModel $queryModel = null):int
                 ->from("dvds");
             if($queryModel)
             {
-                if($queryModel->IsOffered != null)
+                if($queryModel->IsOffered !== null)
                 {
                     $queryBuilder->where("IsOffered", "=", $queryModel->IsOffered);
                 }
+
+                if($queryModel->Search !== null)
+                {
+                    $queryBuilder->where("Title", "LIKE", "%" . $queryModel->Search. "%");
+                    $queryBuilder->where("LocalTitle", "LIKE", "%" . $queryModel->Search. "%");
+                }
             }
 
 
@@ -40,28 +46,52 @@ public function getDVDCount(DVDQueryModel $queryModel = null):int
             return 0;
         }
 
-        public function getDVDs(DVDQueryModel $query): array
+        public function getDVDs(DVDQueryModel $queryModel): array
         {
             $result = array();
-            $query = "SELECT Id, Title, LocalTitle, Synopsis, Notation, Note, Certification, IsOffered, Quantity, Price, Year FROM dvds LIMIT ?, ?;";
+            $queryBuilder = (new QueryBuilder())
+                ->select(["Id", "Title", "LocalTitle", "Synopsis", "Notation", "Note", "Certification", "IsOffered", "Quantity", "Price", "Year"])
+                ->from("dvds")
+                ->limit($queryModel->Offset, $queryModel->Limit);
 
-            $values = array(
-                $offset = $query->offset,
-                $limit = $query->limit
-            );
+            if($queryModel->IsOffered !== null)
+            {
+                $queryBuilder->where("IsOffered", "=", $queryModel->IsOffered);
+            }
 
-            $queryResult = $this->fetchAllStatement($query, $values);
+            if($queryModel->Search !== null)
+            {
+                $queryBuilder->where("Title", "LIKE", "%" . $queryModel->Search. "%");
+                $queryBuilder->where("LocalTitle", "LIKE", "%" . $queryModel->Search. "%");
+            }
 
-            if($queryResult && array_count_values($queryResult) > 0)
+            if($queryModel->OrderBy !== null &&
+                $queryModel->OrderBy !== "" &&
+                $this->isAllowedOrderColumn($queryModel->OrderBy))
+            {
+                $queryBuilder->orderBy($queryModel->OrderBy, $queryModel->OrderDesc);
+            }
+
+            $query = $queryBuilder->getQuery();
+
+            $queryResult = $this->fetchAllStatement($query->sql, $query->params);
+
+            if($queryResult && count($queryResult) > 0)
             {
                 foreach($queryResult as $row)
                 {
-                    array_push($result, $row);
+                    $result[] = $row;
                 }
             }
 
             return $result;
         }
+
+        function isAllowedOrderColumn(string $column): bool
+        {
+            $allowedOrderColumns = array("Quantity", "Year", "Title", "IsOffered", "Price");
+            return in_array($column, $allowedOrderColumns);
+        }
     }
 }
 

src/Utils/Query/QueryBuilder.php

@@ -10,12 +10,16 @@ class QueryBuilder
         protected array $where = [];
         protected int|null $limit;
         protected int|null $offset;
+        protected string|null $orderBy;
+        protected bool|null $orderDesc;
         protected array $params;
 
         function __construct()
         {
             $this->limit = null;
             $this->offset = null;
+            $this->orderDesc = null;
+            $this->orderBy = null;
             $this->params = [];
         }
 
@@ -35,11 +39,15 @@ public function where($column, $operator, $value) {
             return $this;
         }
 
-        public function limit($offset, $limit) {
+        public function limit(int $offset, int $limit) {
             $this->limit = $limit;
             $this->offset = $offset;
-            $this->params[] = $offset;
-            $this->params[] = $limit;
+            return $this;
+        }
+
+        public function orderBy(string $column, bool $descending = true) {
+            $this->orderDesc = $descending;
+            $this->orderBy = $column;
             return $this;
         }
 
@@ -48,9 +56,13 @@ public function getQuery():QueryModel {
             if (!empty($this->where)) {
                 $sql .= " WHERE " . implode(' AND ', $this->where);
             }
+            if ($this->orderBy !== "" && $this->orderDesc !== null) {
+                $sql .= " ORDER BY $this->orderBy " . ($this->orderDesc ? 'DESC' : 'ASC') . " ";
+            }
             if ($this->limit) {
-                $sql .= " LIMIT ?, ?";
+                $sql .= " LIMIT $this->offset, $this->limit";
             }
+            $sql .= ";";
             $result = new QueryModel();
             $result->sql = $sql;
             $result->params = $this->params;

src/Views/BaseView.php

@@ -12,12 +12,13 @@ abstract class BaseView
         protected string $viewName;
         protected string $subTitle;
         protected string $subContent;
+        protected string $subScripts;
         public LayoutViewModel $layoutData;
         protected string $cssInclude;
 
         protected abstract function render();
 
-        protected function renderLayout(LayoutViewModel $viewModel, IVIewModel|null $contentData): void
+        protected function renderLayout(LayoutViewModel $viewModel, IVIewModel|null $contentData, bool $hasJS = false): void
         {
             if(!isset($this->viewName))
             {
@@ -38,11 +39,26 @@ protected function renderLayout(LayoutViewModel $viewModel, IVIewModel|null $con
                 $this->layoutData->isLoggedIn = false;
             }
 
+            if($hasJS)
+            {
+                $this->subScripts = $this->loadJS($this->viewName);
+            }
+            else
+            {
+                $this->subScripts = "";
+            }
             $this->subContent = $this->loadView($this->viewName, $contentData);
             $this->cssInclude = $this->loadCSS($this->viewName, $contentData);
             require "Layout/LayoutView.template.php";
         }
 
+        protected function loadJS(string $viewFiles): string
+        {
+            ob_start();
+            include $viewFiles . ".js";
+            return ob_get_clean();
+        }
+
         protected function loadView(string $viewFiles, IViewModel|null $pData): string
         {
             $data = $pData;

src/Views/Layout/LayoutView.template.php

@@ -4,6 +4,11 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>C218 - <?php echo $this->layoutData->pageSubTitle ?? "Home" ?></title>
+    <script type="text/javascript">
+        <?php
+            echo $this->subScripts;
+        ?>
+    </script>
 </head>
 <body>
     <style>

src/Views/Manage/DVD/ManageDVDView.js

@@ -0,0 +1,30 @@
+function orderBy(column) {
+    let url = new URL(window.location.href);
+    let orderDesc = url.searchParams.get('OrderDesc');
+    url.searchParams.set("OrderBy", column);
+    if (!orderDesc || orderDesc === "") {
+        url.searchParams.set("OrderDesc", "True");
+    } else if (orderDesc === "True") {
+        url.searchParams.set("OrderDesc", "False");
+    } else if (orderDesc === "False") {
+        url.searchParams.set("OrderDesc", "");
+        url.searchParams.set("OrderBy", "");
+    }
+
+    window.location.href = url.toString();
+}
+
+function search() {
+    let url = new URL(window.location.href);
+    const query = document.querySelector('#dvd-search-input').value.trim();
+    if (query) {
+        url.searchParams.set("Search", query);
+    }
+    window.location.href = url.toString();
+}
+
+function changePage(offset) {
+    let url = new URL(window.location.href);
+    url.searchParams.set("Offset", offset);
+    window.location.href = url.toString();
+}

src/Views/Manage/DVD/DVDView.php → src/Views/Manage/DVD/ManageDVDView.php

@@ -3,17 +3,17 @@
 namespace Views\Manage\DVD
 {
 
-    use Models\ViewModels\DVDViewModel;
+    use Models\ViewModels\ManageDVDViewModel;
     use Models\ViewModels\LayoutViewModel;
     use Views\BaseView;
 
-    class DVDView extends BaseView
+    class ManageDVDView extends BaseView
     {
-        private DVDViewModel $data;
+        private ManageDVDViewModel $data;
 
-        function __construct(DVDViewModel $viewModel)
+        function __construct(ManageDVDViewModel $viewModel)
         {
-            $this->viewName="Manage/DVD/DVDView";
+            $this->viewName="Manage/DVD/ManageDVDView";
             $this->subTitle="DVD";
 
             $this->data = $viewModel;
@@ -24,7 +24,7 @@ protected function render(): void
         {
             $layoutData = new LayoutViewModel();
             $layoutData -> pageSubTitle = $this->subTitle;
-            parent::renderLayout($layoutData, $this->data);
+            parent::renderLayout($layoutData, $this->data, true);
         }
     }
 }