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import * as Config from "./config";
function generateNonce(): string {
var arr = new Uint8Array(20);
window.crypto.getRandomValues(arr);
return Array.from(arr, b => b.toString(16).padStart(2, "0")).join("");
}
export function startTwitchAuth() {
const nonce = generateNonce();
document.cookie = `authnonce=${nonce}; path=/;`;
window.location.href =
`https://id.twitch.tv/oauth2/authorize?response_type=id_token`
+ `&client_id=${Config.CLIENT_ID}`
+ `&redirect_uri=${Config.URL}`
+ `&scope=openid`
+ `&nonce=${nonce}`
+ `&claims=${{id_token: {preferred_username: null}}}`
;
}
export function getFragmentQuery(): Map<string, string> {
let query = new Map();
const hashQuery = document.location.hash.slice(1).split("&");
for (let equals of hashQuery) {
const pair = equals.split("=");
query.set(decodeURIComponent(pair[0]), decodeURIComponent(pair[1]));
}
return query;
}
export function getAuthToken(): String | null {
const frag = getFragmentQuery();
const token = frag.get("id_token");
if (token) {
document.cookie = `id_token=${token}; path=/; SameSite=Strict`;
}
for (let c of document.cookie.split("; ")) {
const [k, v] = c.split("=");
if (k === "id_token") return v;
}
return null;
}
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