#!/usr/bin/php
<?php

class Openvpn implements IPluggable
{
    private PluginContext $context;

    public function restart()
    {
        //restart ovpn
        return shell_exec($this->context->getConfig()["ovpn"]["restart_cmd"]);
    }

    public function init(PluginContext $context): void
    {
        $this->context = $context;
        $this->checkConfig();
    }

    private function checkConfig(): void
    {
        $config = $this->context->getConfig();
        if (!isset($config["ovpn"])) {
            $config["ovpn"] = $this->context->getMetadata()["config"];
        }
    }

    public function getRoutingConfig(): array
    {
        $networks = (new NetworkConfigReader())->getConfigs();
        $data = [];

        //add new routes
        foreach ($this->context->getConfig() ["networks"] as $key) {
            if (isset($networks[$key])) {
                foreach ($networks[$key]["networks"] as $route) {
                    $parts = explode("/", $route);
                    $mask = long2ip(-1 << (32 - (int)$parts[1]));
                    $dst = $parts[0];
                    $data[] = "push \"route {$dst} {$mask}\"";
                }
            }
        }

        return $data;
    }
}