Initial Release v1.0.0: Full feature set with Docker automation, Nginx/Alpine stack

app/Models/VoucherTemplateModel.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Models;
+
+use App\Core\Database;
+
+class VoucherTemplateModel {
+
+    public function getAll() {
+        $db = Database::getInstance();
+        $stmt = $db->query("SELECT * FROM voucher_templates");
+        return $stmt->fetchAll();
+    }
+    
+    public function getBySession($sessionName) {
+        // Templates can be global or session specific, but allow session filtering
+        $db = Database::getInstance();
+        $stmt = $db->query("SELECT * FROM voucher_templates WHERE session_name = ? OR session_name = 'global'", [$sessionName]);
+        return $stmt->fetchAll();
+    }
+
+    public function getById($id) {
+        $db = Database::getInstance();
+        $stmt = $db->query("SELECT * FROM voucher_templates WHERE id = ?", [$id]);
+        return $stmt->fetch();
+    }
+
+    public function add($data) {
+        $db = Database::getInstance();
+        $sql = "INSERT INTO voucher_templates (session_name, name, content) VALUES (?, ?, ?)";
+        return $db->query($sql, [
+            $data['session_name'],
+            $data['name'],
+            $data['content']
+        ]);
+    }
+
+    public function update($id, $data) {
+        $db = Database::getInstance();
+        $sql = "UPDATE voucher_templates SET name=?, content=?, updated_at=CURRENT_TIMESTAMP WHERE id=?";
+        return $db->query($sql, [
+            $data['name'],
+            $data['content'],
+            $id
+        ]);
+    }
+
+    public function delete($id) {
+        $db = Database::getInstance();
+        return $db->query("DELETE FROM voucher_templates WHERE id = ?", [$id]);
+    }
+}