<?php

if (isset($_GET["chrome"])) {
    header("Access-Control-Allow-Origin: chrome-extension://" . preg_replace("/[^a-z]/m", "", $_GET["chrome"]));
    header("Access-Control-Allow-Credentials: true");
}

require_once $_SERVER['DOCUMENT_ROOT'] . "/includes/util/session.inc"; global $isLoggedIn; global $_PROFILE;

if (!$isLoggedIn || !isset($_PROFILE) || !isset($_PROFILE["login"])) {
    header("Location: /-/login");
    die();
}

$request_raw = file_get_contents('php://input');
$json_object = json_decode($request_raw, true);

$host = md5($json_object['host'] ?? $_GET["host"]);

switch ($_GET['type']) {
    case "heartbeat":
        if (file_exists($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/metadata/" . $_PROFILE['login'] . "-" . $host . ".json")) {
            $data = json_decode(file_get_contents($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/metadata/" . $_PROFILE['login'] . "-" . $host . ".json"), true);
            $data["date"] = date('c');
            file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/metadata/" . $_PROFILE['login'] . "-" . $host . ".json", json_encode($data));
        }
        break;

    case "screenshot":
        $id = $json_object['id'];
        $data = base64_decode($json_object['data']);

        if (!file_exists($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/screens")) mkdir($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/screens");
        file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/screens/" . $_PROFILE['login'] . "-" . $host . "-" . $id . ".jpg", $data);
        break;

    case "window":
        $id = sha1($json_object['id']);
        $data = base64_decode($json_object['data']);

        if (!file_exists($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/windows")) mkdir($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/windows");
        file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/windows/" . $_PROFILE['login'] . "-" . $host . "-" . $id . ".jpg", $data);

        if (isset($json_object['icon'])) {
            $data2 = base64_decode($json_object['icon']);
            file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/windows/" . $_PROFILE['login'] . "-" . $host . "-" . $id . ".png", $data2);
        } else {
            file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/windows/" . $_PROFILE['login'] . "-" . $host . "-" . $id . ".png", "");
        }

        break;

    case "data":
        if (!file_exists($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/metadata")) mkdir($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/metadata");
        if (isset($json_object["_session"])) unset($json_object["_session"]);
        file_put_contents($_SERVER['DOCUMENT_ROOT'] . "/includes/data/computers/metadata/" . $_PROFILE['login'] . "-" . $host . ".json", json_encode($json_object));
        break;
}

if (isset($_GET["json"])) {
    die(json_encode([
        "id" => $_PROFILE['login'] . "-" . $host
    ]));
} else {
    die($_PROFILE['login'] . "-" . $host);
}