<?php

namespace Kletellier\MiniWeb\Core\Kernel;

use Kletellier\MiniWeb\Core\Routing\Router;
use Dotenv\Dotenv;
use Kletellier\PdoWrapper\Connection; 

class Application
{
    protected Router $router;
    protected $_whoops;
    public function __construct()
    {
        // enable error reporting
        $this->setReporting();

        try {
            $dotenv = Dotenv::createImmutable(ROOT);
            $dotenv->load();
        } catch (\Throwable $th) {
            e($th->getMessage());
            die();
        }

        if ($this->isDebug()) {
            $this->_whoops = new \Whoops\Run();
            $handler = new \Whoops\Handler\PrettyPageHandler();
            $this->_whoops->pushHandler($handler);
            $this->_whoops->register();
        }

        $db_config = $this->getDatabaseConfig();

        if (!empty($db_config)) {
            // Initialize DB system
            Connection::init($db_config, array_keys($db_config));
        }

        // Init router
        $this->router = new Router();
    }

    private function isDebug(): bool
    {
        $ret = true;
        if (isset($_ENV["DEBUG"])) {
            $ret = ($_ENV["DEBUG"] == "true");
        }
        return $ret;
    }

    private function getDatabaseConfig(): array
    {
        $ret = [];
        $connections = isset($_ENV["CONNECTIONS"]) ? explode(",", $_ENV["CONNECTIONS"])  : [];
        foreach ($connections as $connection) {
            if ($connection !== "") {
                $conn = [];
                $key = (strtoupper(trim($connection)));
                $conn["TYPE"] = isset($_ENV[$this->getKey("TYPE", $key)]) ? $_ENV[$this->getKey("TYPE", $key)] : null;
                $conn["USER"] = isset($_ENV[$this->getKey("USER", $key)]) ? $_ENV[$this->getKey("USER", $key)] : null;
                $conn["HOST"] = isset($_ENV[$this->getKey("HOST", $key)]) ? $_ENV[$this->getKey("HOST", $key)] : null;
                $conn["PASSWORD"] = isset($_ENV[$this->getKey("PASSWORD", $key)]) ? $_ENV[$this->getKey("PASSWORD", $key)] : null;
                $conn["DATABASE"] = isset($_ENV[$this->getKey("DATABASE", $key)]) ? $_ENV[$this->getKey("DATABASE", $key)] : null;
                $conn["PORT"] = isset($_ENV[$this->getKey("PORT", $key)]) ? $_ENV[$this->getKey("PORT", $key)] : null;
                if ($conn["TYPE"] == "sqlite") {
                    if (!is_file($conn["DATABASE"])) {
                        $conn["DATABASE"] = ROOT . DS . "databases" . DS . $conn["DATABASE"];
                    }
                }
                $ret[$connection] = $conn;
            }
        }
        return $ret;
    }

    private function getKey(string $type, string $name): string
    {
        return "DB_" . $name . "_" . $type;
    }

    /**
     * Enable/Disable error reporting to output buffer
     */
    private function setReporting()
    {
        error_reporting(E_ALL);
        ini_set('display_errors', 'On');
    }

    public function handle()
    {
        try {
            $this->router->run();
        } catch (\Exception $ex) {
            e($ex->getMessage());
            die();
        }
    }
}