cleaning up polling code

src/App.vue

@@ -94,7 +94,7 @@ export default {
         vm.$data.loading = 0;
         return;
       }
-      helper.enabledPolling = 0;
+      helper.disablePolling();
       contentTable.getInstance().loading();
 
       let url = formWrapper.getAttribute("action");

src/actions/updatePage.js

@@ -1,7 +1,5 @@
 import helper from '../utils/helper'
 import eventHandler from '../lib/eventHandler';
-import Http from '../lib/http'
-
 const basePath = "/apps/ncdownloader/status/";
 const tableContainer = ".table";
 export default {
@@ -18,18 +16,16 @@ export default {
             }
             let name = type + "-downloads";
             //avoid repeated click
-            if (currentType === name && helper.enabledPolling) {
+            if (currentType === name && helper.isPolling()) {
                 return;
             }
-            helper.enabledPolling = 1;
-            //$(tableContainer).removeClass().addClass("table " + name);
             container.setAttribute("type", name);
             container.className = "table " + name;
             let delay = 15000;
             if (['active', 'youtube-dl'].includes(type)) {
                 delay = 1500;
             }
-            helper.loop(helper.refresh, delay, ...[path])
+            helper.polling(delay, path);
         };
         eventHandler.add("click", ".waiting-downloads a", event => clickHandler(event, 'waiting'));
         eventHandler.add("click", ".complete-downloads a", event => clickHandler(event, 'complete'));
@@ -38,13 +34,12 @@ export default {
         eventHandler.add("click", ".youtube-dl-downloads a", event => clickHandler(event, 'youtube-dl'));
         eventHandler.add("click", "#ncdownloader-table-wrapper", ".download-file-folder", function (event) {
             event.stopPropagation();
-            const path = "/apps/ncdownloader/update";
+            event.preventDefault();
-            let url = helper.generateUrl(path);
+            let ele = event.target;
-            Http.getInstance(url).setMethod('GET').send();
+            let url = ele.getAttribute("href");
+            helper.scanFolder().then(() => {
+                helper.redirect(url);
+            });
         });
-        helper.polling(function (url) {
-            url = helper.generateUrl(url);
-            Http.getInstance(url).setMethod('GET').send();
-        }, 60000, "/apps/ncdownloader/update");
     }
 }

src/utils/helper.js

@@ -6,6 +6,7 @@ import "toastify-js/src/toastify.css"
 import { translate as t, translatePlural as n } from '@nextcloud/l10n'
 import contentTable from '../lib/contentTable';
 import Http from '../lib/http'
+import Polling from "../lib/polling";
 
 const helper = {
     vue: {},
@@ -16,12 +17,42 @@ const helper = {
         return helper.vue[name];
     },
     generateUrl: generateUrl,
-    loop(callback, delay, ...args) {
+    isPolling() {
-        callback(...args);
+        return Polling.create().isEnabled();
-        clearTimeout(helper.timeoutID);
+    },
-        this.polling(callback, delay, ...args);
+    enabePolling() {
+        Polling.create().enable();
+    },
+    disablePolling() {
+        Polling.create().disable().clear();
+    },
+    polling(delay = 1000, path) {
+        Polling.create().setDelay(delay).run(helper.refresh, path);
+    },
+    scanFolder(path = "/apps/ncdownloader/scanfolder") {
+        let url = helper.generateUrl(path);
+        return new Promise((resolve) => {
+            Http.getInstance(url).setMethod('GET').setHandler(function (data) {
+                resolve(data.status);
+            }).send();
+        });
+    },
+    pollingFolder(delay = 1000) {
+        Polling.create().setDelay(delay).run(helper.scanFolder);
+    },
+    refresh(path) {
+        path = path || "/apps/ncdownloader/status/active";
+        let url = helper.generateUrl(path);
+        Http.getInstance(url).setHandler(function (data) {
+            if (data && data.row) {
+                contentTable.getInstance(data.title, data.row).create();
+            } else {
+                contentTable.getInstance().noData();
+            }
+            if (data.counter)
+                helper.updateCounter(data.counter);
+        }).send();
     },
-    enabledPolling: 0,
     trim(string, char) {
         return string.split(char).filter(Boolean).join(char)
     },
@@ -32,15 +63,6 @@ const helper = {
     ucfirst(string) {
         return string.charAt(0).toUpperCase() + string.slice(1)
     },
-    polling(callback, delay, ...args) {
-        self = this;
-        helper.timeoutID = setTimeout(function () {
-            if (self.enabledPolling) {
-                callback(...args);
-                self.polling(callback, delay, ...args);
-            }
-        }, delay);
-    },
     isURL(url) {
         let regex = '^((https?|ftp)://)([a-z0-9-]+\.)?(?:[-a-zA-Z0-9()@:%_\+.~#?&/=]+)$';
         const pattern = new RegExp(regex, 'i');
@@ -115,19 +137,6 @@ const helper = {
             counter.innerHTML = '<div class="number">' + data[key] + '</div>';
         }
     },
-    refresh(path) {
-        path = path || "/apps/ncdownloader/status/active";
-        let url = helper.generateUrl(path);
-        Http.getInstance(url).setHandler(function (data) {
-            if (data && data.row) {
-                contentTable.getInstance(data.title, data.row).create();
-            } else {
-                contentTable.getInstance().noData();
-            }
-            if (data.counter)
-                helper.updateCounter(data.counter);
-        }).send();
-    },
     html2DOM: function (htmlString) {
         const parser = new window.DOMParser();
         let doc = parser.parseFromString(htmlString, "text/html")
@@ -253,6 +262,9 @@ const helper = {
     resetSearch: function (vm) {
         vm.$data.loading = 0;
         contentTable.getInstance([], []).clear();
+    },
+    redirect(url) {
+        window.location.href = url;
     }
 }