Add TuxiNet branding and document templates

app/Core/Config.php

@@ -0,0 +1,93 @@
+<?php
+
+namespace App\Core;
+
+class Config
+{
+    private static ?self $instance = null;
+
+    /** @var array<string, mixed> */
+    private array $values = [];
+
+    private function __construct()
+    {
+        $this->loadEnv();
+        $this->loadConfigFiles();
+    }
+
+    public static function getInstance(): self
+    {
+        if (self::$instance === null) {
+            self::$instance = new self();
+        }
+
+        return self::$instance;
+    }
+
+    public function get(string $key, $default = null)
+    {
+        $segments = explode('.', $key);
+        $value = $this->values;
+
+        foreach ($segments as $segment) {
+            if (!is_array($value) || !array_key_exists($segment, $value)) {
+                return $default;
+            }
+            $value = $value[$segment];
+        }
+
+        return $value;
+    }
+
+    /**
+     * @param array<string, mixed> $config
+     */
+    public function set(array $config): void
+    {
+        $this->values = array_replace_recursive($this->values, $config);
+    }
+
+    private function loadEnv(): void
+    {
+        $envPath = base_path('.env');
+        if (!file_exists($envPath)) {
+            return;
+        }
+
+        $lines = file($envPath, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
+        if ($lines === false) {
+            return;
+        }
+
+        foreach ($lines as $line) {
+            if (str_starts_with(trim($line), '#')) {
+                continue;
+            }
+
+            [$name, $value] = array_map('trim', explode('=', $line, 2) + [1 => '']);
+            $value = trim($value, "\"' ");
+            $_ENV[$name] = $value;
+            putenv("{$name}={$value}");
+        }
+    }
+
+    private function loadConfigFiles(): void
+    {
+        $configDir = base_path('config');
+        if (!is_dir($configDir)) {
+            return;
+        }
+
+        $files = glob($configDir . '/*.php');
+        if ($files === false) {
+            return;
+        }
+
+        foreach ($files as $file) {
+            $key = basename($file, '.php');
+            /** @var array<string, mixed> $data */
+            $data = require $file;
+            $this->values[$key] = $data;
+        }
+    }
+}