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import GameServer from "./server";
import { ipcRenderer } from "electron";
let LAST_TOS = "";
export default async function CheckNAcceptTOS(
server: GameServer
): Promise<boolean> {
try {
let thisVersion = await getTOSVersion(server.TOSLink);
console.log(server.TOSLink, thisVersion);
LAST_TOS = thisVersion;
return localStorage.getItem(server.TOSLink) == thisVersion;
} catch (err) {
console.log("TOS check Error", err);
return true;
}
}
async function getTOSVersion(address: string): Promise<string> {
// Returns date or if not found the hash of the whole page
const PageContent = await request(address);
const date = PageContent.match(/Last Update: \d\d\d\d-\d\d-\d\d/g);
let hash: string;
if (!date || date.length > 1) {
hash = HashString(
PageContent.replace(/ |\t|\n/g, "").replace(/<.+?>/g, "r")
).toString(16);
} else {
hash = date[0].replace(/ /g, "");
}
return hash;
}
function request(url: string): Promise<string> {
return new Promise((res, rej) => {
var xhr = new XMLHttpRequest();
xhr.open("GET", url);
xhr.addEventListener("error", (ev) => {
rej(ev);
});
xhr.onload = function () {
if (xhr.status === 200) {
res(xhr.responseText);
} else {
rej(new Error(`xhr.status: ${xhr.status} != 200`));
}
};
xhr.send();
});
}
// Hash function from http://werxltd.com/wp/2010/05/13/javascript-implementation-of-javas-string-hashcode-method/
function HashString(s: string) {
let hash = 0;
if (s.length == 0) return hash;
for (let i = 0; i < s.length; i++) {
let char = s.charCodeAt(i);
hash = (hash << 5) - hash + char;
hash = hash & hash; // Convert to 32bit integer
}
return hash;
}
export function acceptLastTOS(server: GameServer) {
localStorage.setItem(server.TOSLink, LAST_TOS);
}
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