feat(disqus): add disqus integration

packages/backend/src/apps/disqus/auth/verify-credentials.js

@@ -0,0 +1,34 @@
+import { URLSearchParams } from 'url';
+
+const verifyCredentials = async ($) => {
+  const oauthRedirectUrlField = $.app.auth.fields.find(
+    (field) => field.key == 'oAuthRedirectUrl'
+  );
+  const redirectUri = oauthRedirectUrlField.value;
+  const params = new URLSearchParams({
+    grant_type: 'authorization_code',
+    client_id: $.auth.data.apiKey,
+    client_secret: $.auth.data.apiSecret,
+    redirect_uri: redirectUri,
+    code: $.auth.data.code,
+  });
+
+  const { data } = await $.http.post(
+    `https://disqus.com/api/oauth/2.0/access_token/`,
+    params.toString()
+  );
+
+  await $.auth.set({
+    accessToken: data.access_token,
+    tokenType: data.token_type,
+    apiKey: $.auth.data.apiKey,
+    apiSecret: $.auth.data.apiSecret,
+    scope: $.auth.data.scope,
+    userId: data.user_id,
+    expiresIn: data.expires_in,
+    refreshToken: data.refresh_token,
+    screenName: data.username,
+  });
+};
+
+export default verifyCredentials;