don't attempt to connect to authenticate with google unless system properties are set

Author: rs-fraser

src/main/webapp/scripts/externalTinymcePlugins/googledrive/plugin.min.js

@@ -11,22 +11,23 @@ async function insertFromGoogleDrive() {
 	if(!gdClientId || !gdScope){
 		apprise("Missing required system properties for google drive "
 				+ "integration. Please speak to your rspace administrator");
-	}
-	await gapi.load('client:picker');
-
-	const client = await google.accounts.oauth2.initTokenClient({
-		client_id: gdClientId,
-		scope: gdScope,
-		callback: onTokenResponse,
-		error_callback: onTokenResponseError,
-	});
-
-	if(!accessToken){
-		// show consent screen for user login and authorisation
-		client.requestAccessToken({prompt: 'consent'});
 	} else {
-		// skip consent screen when user has already consented and has a token
-		client.requestAccessToken({prompt: ''});
+		await gapi.load('client:picker');
+
+		const client = await google.accounts.oauth2.initTokenClient({
+			client_id: gdClientId,
+			scope: gdScope,
+			callback: onTokenResponse,
+			error_callback: onTokenResponseError,
+		});
+
+		if(!accessToken){
+			// show consent screen for user login and authorisation
+			client.requestAccessToken({prompt: 'consent'});
+		} else {
+			// skip consent screen when user has already consented and has a token
+			client.requestAccessToken({prompt: ''});
+		}
 	}
 }