Add TuxiNet branding and document templates

app/Models/Model.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Models;
+
+use App\Core\Database;
+use PDO;
+
+abstract class Model
+{
+    protected static string $table;
+    protected static string $primaryKey = 'id';
+
+    /**
+     * @return array<int, static>
+     */
+    public static function all(): array
+    {
+        $stmt = Database::connection()->query('SELECT * FROM ' . static::$table);
+        $rows = $stmt->fetchAll();
+        return array_map(fn($row) => static::fromArray($row), $rows);
+    }
+
+    public static function find(int $id): ?static
+    {
+        $stmt = Database::connection()->prepare('SELECT * FROM ' . static::$table . ' WHERE ' . static::$primaryKey . ' = :id LIMIT 1');
+        $stmt->execute(['id' => $id]);
+        $row = $stmt->fetch();
+        if (!$row) {
+            return null;
+        }
+        return static::fromArray($row);
+    }
+
+    /**
+     * @param array<string, mixed> $attributes
+     */
+    abstract protected static function fromArray(array $attributes): static;
+}