1 files changed, 39 insertions, 0 deletions
diff --git a/src/app/Models/Comment.php b/src/app/Models/Comment.php
new file mode 100644
index 0000000..464cfe2
--- /dev/null
+++ b/src/app/Models/Comment.php
@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+// Comment model: database operations for the comments table.
+
+namespace App\Models;
+
+use App\Database;
+
+class Comment
+{
+    private \PDO $pdo;
+
+    public function __construct()
+    {
+        $this->pdo = Database::getInstance()->getPdo();
+    }
+
+    public function create(int $userId, int $postId, string $content): int
+    {
+        $stmt = $this->pdo->prepare(
+            'INSERT INTO comments (user_id, post_id, content) VALUES (:user_id, :post_id, :content)'
+        );
+        $stmt->execute(['user_id' => $userId, 'post_id' => $postId, 'content' => $content]);
+        return (int) $this->pdo->lastInsertId();
+    }
+
+    public function findByPostId(int $postId): array
+    {
+        $stmt = $this->pdo->prepare(
+            'SELECT comments.*, users.username FROM comments
+             JOIN users ON comments.user_id = users.id
+             WHERE comments.post_id = :post_id
+             ORDER BY comments.created_at ASC'
+        );
+        $stmt->execute(['post_id' => $postId]);
+        return $stmt->fetchAll();
+    }
+}