<?php

namespace App\Http\Controllers;

use App\Models\Peer;
use App\Models\User;
use App\Models\VPN;
use App\Services\WGRest;
use Illuminate\Foundation\Auth\Access\AuthorizesRequests;
use Illuminate\Foundation\Bus\DispatchesJobs;
use Illuminate\Foundation\Validation\ValidatesRequests;
use Illuminate\Http\Request;
use Illuminate\Routing\Controller as BaseController;
use Illuminate\Support\Facades\View;
use IPTools\Network;

class VPNController extends BaseController
{
    use AuthorizesRequests, DispatchesJobs, ValidatesRequests;

    public function overview(Request $request) {
        $id = $request->input("id");
        $vpn = VPN::query()->where("id", "=", $id)->first();
        session()->put("current_vpn", $vpn->id);
        View::share("currentVPNName", $vpn->name);

        //Calculate Free IPS
        $network = Network::parse($vpn->network);
        $usedIPs = Peer::query()->where("vpn_id", "=", $vpn->id)->count();

        $percent = (100 / $network->count()) * $usedIPs ;

        return view("vpn.overview", ["currentVPN"=>$vpn, "percent" => $percent ]);
    }

    public function accessView() {
        $vpn_id = session()->get("current_vpn");
        $users = User::query()->get();
        return view("vpn.access", ["users" => $users, "vpn_id" => $vpn_id]);
    }

    public function setAccess(Request $request) {
        $vpn_id = session()->get("current_vpn");
        $user = User::query()->where("id", "=", $request->input("id"))->firstOrFail();
        $user->setVPNRole($vpn_id, $request->input("access"));

        return redirect("/vpn/access");
    }

    public function newView() {
        return view("vpn.new");
    }

    public function new(Request $request) {
        $vpn = new VPN();
        $vpn->name = $request->input("name");
        $vpn->displayName = $request->input("display_name");
        $vpn->listen_port = $request->input("port");
        $vpn->network = $request->input("network");

        $privateKey = $request->input("private_key");
        if(empty($privateKey)) {
            $privateKey = exec('wg genkey');
        }
        $vpn->private_key = $privateKey;
        $vpn->public_key = null;
        $vpn->saveOrFail();
    }

    public function sendToRest(WGRest $WGRest) {
        $vpn_id = session()->get("current_vpn");
        $vpn = VPN::query()->where("id", "=", $vpn_id)->firstOrFail();

        $WGRest->createDevice($vpn->name, $vpn->listen_port, $vpn->private_key, $vpn->network);
        return redirect("/vpn?id=".$vpn->id);
    }
}