Updated the discord.ts controller

controller/discord.ts

@@ -1,4 +1,5 @@
 import DiscordOauth2 from 'discord-oauth2';
+
 const oauth = new DiscordOauth2();
 
 /**
@@ -14,6 +15,33 @@ export const createTokenByCode = (code: string) => oauth.tokenRequest({
     code
 });
 
+/**
+ * Generate a new access token from the refresh token
+ * @param refreshToken The token to refresh the access token
+ */
+export const generateToken = (refreshToken: string) => oauth.tokenRequest({
+    grantType: "refresh_token",
+    scope: "identify guilds",
+    clientId: process.env.DC_CLIENT,
+    clientSecret: process.env.DC_SECRET,
+    redirectUri: process.env.DC_REDIRECT_URI,
+    refreshToken
+});
+
+/**
+ * Gets the guilds from the access token.
+ * This function also automatically renews the access token if it expires
+ * @param refreshDate The date of when to renew the provided access token
+ * @param refreshToken The token to refresh the access token
+ * @param accessToken The token to access the discord api
+ */
+export const getGuilds = async (refreshDate: Date, refreshToken: string, accessToken: string) => {
+    let token = accessToken;
+    if (refreshDate.getDate() > Date.now())
+        token = (await generateToken(refreshToken)).access_token;
+    return await oauth.getUserGuilds(token);
+}
+
 /**
  * Gets user information from the discord api
  * @param token The access token of the user