<?php

if (str_ends_with($_GET['_'], "/")) {
    $pagename = substr($_GET['_'], 0, strlen($_GET['_']) - 1);
} else {
    $pagename = $_GET['_'];
}

$toplevel = explode("/", $pagename)[0];

if (in_array($toplevel, ["editor", "icons", "species", "uploads"])) {
    $filename = explode("/", $pagename)[1];
    if (file_exists($_SERVER['DOCUMENT_ROOT'] . "/assets/" . $toplevel . "/" . $filename)) {
        header("Location: /assets/" . $toplevel . "/" . $filename) and die();
    } else {
        header("Location: /?error=File not found") and die();
    }
} elseif ($toplevel === "") {
    require_once $_SERVER['DOCUMENT_ROOT'] . "/pages/home.php";
} else {
    if (file_exists($_SERVER['DOCUMENT_ROOT'] . "/pages/" . $toplevel . ".php")) {
        require_once $_SERVER['DOCUMENT_ROOT'] . "/pages/" . $toplevel . ".php";
    } else if ($toplevel === "cloudburst" || $toplevel === "raindrops") {
        require_once $_SERVER['DOCUMENT_ROOT'] . "/pages/page.php";
    } else {
        header("Location: /?error=Page not found: " . strip_tags($pagename)) and die();
    }
}