Switched from setTimeout to crontab for watch-mode.

src/app.js

@@ -4,6 +4,7 @@ const config = require('config');
 const Snoowrap = require('snoowrap');
 const exiftool = require('node-exiftool');
 const exiftoolBin = require('dist-exiftool');
+const cron = require('node-cron');
 const { format } = require('date-fns');
 
 require('array.prototype.flatten').shim();
@@ -40,12 +41,6 @@ function fetchSavePosts(userPosts, ep) {
 }
 
 async function initApp() {
-    function watch() {
-        console.log(`[${format(new Date(), 'YYYY-MM-DD HH:mm:ss')}] Watch-mode enabled, checking for new posts ${config.fetch.watch.interval} minutes from now.`);
-
-        setTimeout(initApp, Math.ceil(config.fetch.watch.interval) * 1000 * 60);
-    }
-
     const usersProvided = args.users && args.users.length;
     const postIdsProvided = args.posts && args.posts.length;
 
@@ -62,17 +57,17 @@ async function initApp() {
         await ep.close();
 
         if (args.watch) {
-            watch();
+            console.log(`[${format(new Date(), 'YYYY-MM-DD HH:mm:ss')}] Watch-mode enabled, checking again for new posts according to crontab '${config.fetch.watch.schedule}'.`);
         }
     } catch (error) {
         console.error(error);
-
-        if (args.watch && config.fetch.watch.ignoreErrors) {
-            watch();
-        }
     }
 
     return true;
 }
 
 initApp();
+
+if (args.watch) {
+    cron.schedule(config.fetch.watch.schedule, initApp);
+}