<?php

if (!class_exists('DotEnv')) {
    class DotEnv
    {
        /**
         * The directory where the .env file is located.
         *
         * @var string
         */
        protected $path;

        public function __construct(string $path)
        {
            if (!file_exists($path)) {
                throw new \InvalidArgumentException(sprintf('%s does not exist', $path));
            }
            $this->path = $path;
        }

        public function load(): void
        {
            if (!is_readable($this->path)) {
                throw new \RuntimeException(sprintf('%s file is not readable', $this->path));
            }

            $lines = file($this->path, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
            foreach ($lines as $line) {
                if (strpos(trim($line), '#') === 0) {
                    continue;
                }

                list($name, $value) = explode('=', $line, 2);
                $name = trim($name);
                $value = trim($value);

                if (!array_key_exists($name, $_SERVER) && !array_key_exists($name, $_ENV)) {
                    putenv(sprintf('%s=%s', $name, $value));
                    $_ENV[$name] = $value;
                    $_SERVER[$name] = $value;
                }
            }
        }
    }
}
