feat(reddit): add reddit integration

packages/backend/src/apps/reddit/auth/refresh-token.ts

@@ -0,0 +1,29 @@
+import { URLSearchParams } from 'node:url';
+import { IGlobalVariable } from '@automatisch/types';
+
+const refreshToken = async ($: IGlobalVariable) => {
+  const headers = {
+    Authorization: `Basic ${Buffer.from(
+      $.auth.data.clientId + ':' + $.auth.data.clientSecret
+    ).toString('base64')}`,
+  };
+  const params = new URLSearchParams({
+    grant_type: 'refresh_token',
+    refresh_token: $.auth.data.refreshToken as string,
+  });
+
+  const { data } = await $.http.post(
+    'https://www.reddit.com/api/v1/access_token',
+    params.toString(),
+    { headers }
+  );
+
+  await $.auth.set({
+    accessToken: data.access_token,
+    expiresIn: data.expires_in,
+    scope: data.scope,
+    tokenType: data.token_type,
+  });
+};
+
+export default refreshToken;