Test meme filtering

endpoints/meme.php

@@ -7,7 +7,7 @@ function endpoint($endpoint_data): array
 
     return match ($endpoint_data["action"]) {
         "addMeme" => addMeme($endpoint_data['meme_title'], $endpoint_data['meme_text'], $endpoint_data['meme_image_id']),
-        "renderGallery" => renderMemeGallery(),
+        "renderGallery" => renderMemeGallery($endpoint_data['offset'], $endpoint_data['meme_author'], $endpoint_data['meme_id'], $endpoint_data['meme_keyword']),
         "deleteMeme" => deleteMeme($endpoint_data['meme_id']),
         "getMemeVotes" => getMemeVotes($endpoint_data['meme_id']),
         "deleteVoteMeme" => deleteVoteMeme($endpoint_data['meme_id']),

lib/config.php

@@ -54,6 +54,9 @@ function loadRouterConfig(): array
             'newsarticle' => [
                 'default_permissions' => 255,
             ],
+            'meme' => [
+                'per_page' => 10
+            ],
             'seo' => [
                 'author' => 'Tím AdlerkaTop',
                 'description' => 'Toto je neoficiánla študentská stránka pre Adlerku, kde môžete nájsť plno zaujímavostí.',

lib/meme.php

@@ -8,8 +8,8 @@ require_once "lib/account.php";
  * @param string $title The title of the meme.
  * @param string $memeText The text content of the meme.
  * @param int $imageID The ID of the image associated with the meme.
- * @global mysqli $mysqli The database connection object.
  * @return array Returns an associative array with the operation status and a message.
+ * @global mysqli $mysqli The database connection object.
  */
 function addMeme(string $title, string $memeText, int $imageID): array
 {
@@ -25,6 +25,28 @@ function addMeme(string $title, string $memeText, int $imageID): array
     }
     return $output;
 }
+
+function executeAndRenderMemes(mysqli_stmt $stmt): string {
+    global $routerConfig;
+    $stmt->execute();
+    $stmt->bind_result($memeID, $title, $textContent, $createdAt, $authorID, $filePath, $imageWidth, $imageHeight, $userNickname);
+
+    $memes_out = '';
+    $meme_template = file_get_contents($routerConfig['template_dir'] . "meme.html");
+    $meme_gallery_template = file_get_contents($routerConfig['template_dir'] . 'meme_gallery.html');
+
+    while ($stmt->fetch()) {
+        $memes_out .= renderMeme($memeID, $authorID, $title, $textContent, $createdAt, $filePath, $imageWidth, $imageHeight, $userNickname, $meme_template);
+    }
+
+    $meme_add = isLoggedIn() ? file_get_contents($routerConfig['template_dir'] . 'meme_add.html') : '';
+    $meme_gallery_out = str_replace('__TEMPLATE_MEMES_HERE__', $memes_out, $meme_gallery_template);
+    $meme_gallery_out = str_replace('__TEMPLATE_MEME_ADD__', $meme_add, $meme_gallery_out);
+
+    $stmt->close();
+    return $meme_gallery_out;
+}
+
 /**
  * Renders a meme into HTML based on provided data and a template.
  *
@@ -54,21 +76,19 @@ function renderMeme(int $id, int $authorId, string $title, string $textContent,
     $meme_votes = calculateNetVotes($id);
     $meme_net_votes = $meme_votes['NetVotes'];
 
-    if ($meme_votes['UserVote'] > 0){
+    if ($meme_votes['UserVote'] > 0) {
         $meme_upvote_active = 'fill';
         $meme_downvote_active = 'line';
         $meme_vote_counter_class = 'positive';
         $meme_upvote_button_class = ' visual_hover';
         $meme_downvote_button_class = '';
-    }
+    } elseif (($meme_votes['UserVote'] < 0)) {
-    elseif (($meme_votes['UserVote'] < 0)) {
         $meme_upvote_active = 'line';
         $meme_downvote_active = 'fill';
         $meme_vote_counter_class = 'negative';
         $meme_upvote_button_class = '';
         $meme_downvote_button_class = ' visual_hover';
-    }
+    } else {
-    else {
         $meme_downvote_active = 'line';
         $meme_upvote_active = 'line';
         $meme_vote_counter_class = 'neutral';
@@ -86,60 +106,78 @@ function renderMeme(int $id, int $authorId, string $title, string $textContent,
 
     return str_replace('__TEMPLATE_MEME_TEXT__', htmlspecialchars($textContent), $meme_out);
 }
+
 /**
- * Generates an HTML representation of a gallery of memes from the database.
+ * Renders a gallery of memes, optionally filtered by author ID, meme ID, or a keyword.
- * Renders the memes using renderMeme.
  *
- * @global mysqli $mysqli The database connection object.
+ * This function retrieves memes from the database and returns an HTML string representation.
- * @global array $routerConfig Configuration settings including paths to templates.
+ * It supports filtering by author ID, meme ID, or a keyword that is searched in titles and text content.
- * @return string Returns the complete HTML content of the meme gallery.
+ * It also supports pagination through an offset parameter.
+ *
+ * @param int|null $offset Pagination offset, used to calculate the starting point for records to return.
+ * @param int|null $authorId Optional author ID for filtering memes by a specific author.
+ * @param int|null $memeId Optional meme ID for rendering a single meme.
+ * @param string|null $keyword Optional keyword for full-text search in meme titles and content.
+ * @return string Returns the complete HTML content of the meme gallery, optionally filtered.
  */
-function renderMemeGallery(): string
+function renderMemeGallery(?int $offset = null, ?int $authorId = null, ?int $memeId = null, ?string $keyword = null): string {
-{
+    global $mysqli, $routerConfig;
-    global $mysqli;
-    global $routerConfig;
-    $stmtlist = $mysqli->prepare('SELECT Memes.ID, Memes.Title, Memes.TextContent, Memes.CreatedAt, Memes.AuthorID, Files.Path, Files.Width, Files.Height, Files.Type, Users.Nickname FROM Memes INNER JOIN Users ON Memes.AuthorID = Users.ID INNER JOIN Files ON Memes.FileID = Files.ID');
 
-    // Execute the prepared statement
+    // Start building the SQL query
-    $memeID = 0;
+    $query = 'SELECT Memes.ID, Memes.Title, Memes.TextContent, Memes.CreatedAt, Memes.AuthorID, 
-    $authorID = 0;
+              Files.Path, Files.Width, Files.Height, Users.Nickname
-    $title = "";
+              FROM Memes
-    $textContent = "";
+              INNER JOIN Users ON Memes.AuthorID = Users.ID
-    $filePath = "";
+              INNER JOIN Files ON Memes.FileID = Files.ID';
-    $fileType = "";
-    $userNickname = "";
-    $createdAt = "";
-    $imageWidth = 0;
-    $imageHeight = 0;
-    // Bind the result variables
-    $stmtlist->bind_result($memeID, $title, $textContent, $createdAt, $authorID, $filePath, $imageWidth, $imageHeight, $fileType, $userNickname);
-    $stmtlist->execute();
 
-    $meme_gallery_template = file_get_contents($routerConfig['template_dir'] . 'meme_gallery.html');
+    $conditions = [];
+    $params = [];
+    $types = '';
 
-    // Fetch the results
+    // Add conditions based on provided parameters
-    $memes_out = '';
+    if ($authorId !== null) {
-    $meme_template = file_get_contents($routerConfig['template_dir'] . "meme.html");
+        $conditions[] = 'Memes.AuthorID = ?';
-    $stmtlist->store_result();
+        $params[] = $authorId;
-    while ($stmtlist->fetch()) {
+        $types .= 'i';
-        if (str_starts_with($fileType, 'image')) {
+    }
-            $memes_out .= renderMeme($memeID, $authorID, $title, $textContent, $createdAt, $filePath, $imageWidth, $imageHeight, $userNickname, $meme_template);
+    if ($memeId !== null) {
-        }
+        $conditions[] = 'Memes.ID = ?';
+        $params[] = $memeId;
+        $types .= 'i';
+    }
+    if ($keyword !== null) {
+        $conditions[] = '(Memes.Title LIKE CONCAT("%", ?, "%") OR Memes.TextContent LIKE CONCAT("%", ?, "%"))';
+        $params[] = $keyword;
+        $params[] = $keyword;
+        $types .= 'ss';
     }
-    $meme_add = isLoggedIn() ? file_get_contents($routerConfig['template_dir'] . 'meme_add.html') : '';
-    $meme_gallery_out = str_replace('__TEMPLATE_MEMES_HERE__', $memes_out, $meme_gallery_template);
-    $meme_gallery_out = str_replace('__TEMPLATE_MEME_ADD__', $meme_add, $meme_gallery_out);
 
-// Close the statement
+    // Append conditions to the query
-    $stmtlist->close();
+    if (!empty($conditions)) {
-    return $meme_gallery_out;
+        $query .= ' WHERE ' . join(' AND ', $conditions);
+    }
+
+    if($offset == null) {
+        $offset = 0;
+    }
+    // Add pagination and limit
+    $query .= ' LIMIT ? OFFSET ?';
+    $params[] = $routerConfig['meme']['per_page'];
+    $params[] = $routerConfig['meme']['per_page'] * $offset;
+    $types .= 'ii';
+
+    $stmt = $mysqli->prepare($query);
+    $stmt->bind_param($types, ...$params);
+    return executeAndRenderMemes($stmt);
 }
+
+
 /**
  * Deletes a meme from the database if the current user has the right permissions.
  *
  * @param int $memeID The ID of the meme to delete.
- * @global mysqli $mysqli The database connection object.
  * @return array Returns an associative array with the status of the operation.
+ * @global mysqli $mysqli The database connection object.
  */
 function deleteMeme(int $memeID): array
 {
@@ -161,13 +199,14 @@ function deleteMeme(int $memeID): array
     }
     return $out;
 }
+
 /**
  * Records or updates a vote on a meme by the current user.
  *
  * @param int $memeID The ID of the meme to be voted on.
  * @param int $isUpvote Indicates whether the vote is an upvote (1) or downvote (0).
- * @global mysqli $mysqli The database connection object.
  * @return array Returns an associative array with the status of the vote operation.
+ * @global mysqli $mysqli The database connection object.
  */
 function voteMeme(int $memeID, int $isUpvote): array
 {
@@ -185,12 +224,13 @@ function voteMeme(int $memeID, int $isUpvote): array
     $memeVoteConn->close();
     return $out;
 }
+
 /**
  * Deletes a vote previously made by the current user on a meme.
  *
  * @param int $memeID The ID of the meme whose vote is to be deleted.
- * @global mysqli $mysqli The database connection object.
  * @return array Returns an associative array with the status of the deletion.
+ * @global mysqli $mysqli The database connection object.
  */
 function deleteVoteMeme(int $memeID): array
 {
@@ -205,13 +245,14 @@ function deleteVoteMeme(int $memeID): array
     $memeVoteConn->close();
     return $out;
 }
+
 /**
  * Calculates the net votes for a meme and determines if the current user has voted on it.
  * The array has both the net votes and the user vote(0 when the user hasn't voted)
  *
  * @param int $memeID The ID of the meme for which votes are being calculated.
- * @global mysqli $mysqli The database connection object.
  * @return array Returns an array with net votes and the user's vote status.
+ * @global mysqli $mysqli The database connection object.
  */
 function calculateNetVotes(int $memeID): array
 {