Add ability to download an apps backup config

dashboard/src/components/app/Backups.vue

@@ -7,9 +7,13 @@ const t = i18n.t;
 import { ref, watch, onMounted, useTemplateRef } from 'vue';
 import { Icon, Button, Switch, Checkbox, FormGroup, TextInput, TableView, ButtonGroup, Dialog } from 'pankow';
 import { prettyLongDate } from 'pankow/utils';
+import { SECRET_PLACEHOLDER } from '../../constants.js';
+import { download } from '../../utils.js';
 import AppsModel from '../../models/AppsModel.js';
+import BackupsModel from '../../models/BackupsModel.js';
 
 const appsModel = AppsModel.create();
+const backupsModel = BackupsModel.create();
 
 const props = defineProps([ 'app' ]);
 
@@ -88,6 +92,32 @@ function getDownloadLink(backup) {
   return `${origin}/api/v1/apps/${props.app.id}/backups/${backup.id}/download?access_token=${accessToken}`;
 }
 
+async function onDownloadConfig(backup) {
+  const [error, backupConfig] = await backupsModel.getConfig();
+  if (error) return console.error(error);
+
+  // secrets and tokens already come with placeholder characters we remove them
+  const tmp = {
+    remotePath: backup.remotePath,
+    encrypted: !!backupConfig.password  // we add this just to help the import UI
+  };
+
+  Object.keys(backupConfig).forEach(k => {
+    const v = backupConfig[k];
+    if (v && typeof v === 'object') { // to hide mountOptions.password and the likes
+      tmp[k] = {};
+      Object.keys(v).forEach(function (j) {
+        if (v[j] !== SECRET_PLACEHOLDER) tmp[k][j] = v[j];
+      });
+    } else {
+      if (backupConfig[k] !== SECRET_PLACEHOLDER) tmp[k] = v;
+    }
+  });
+
+  const filename = `${props.app.fqdn}-backup-config-${(new Date(backup.creationTime)).toISOString().split('T')[0]}.json`;
+  download(filename, JSON.stringify(tmp, null, 4));
+}
+
 async function refresh() {
   const [error, result] = await appsModel.backups(props.app.id);
   if (error) return console.error(error);