it works

src/routes/tasks.ts

@@ -35,20 +35,18 @@ async function getTasks(req, res) {
         let data = fs.readFileSync(path.join(EXPORTED_PATH, item), 'utf8');
         let status = JSON.parse(data);
 
-        let requestedUrl = `http://${req.headers.host}`;
-        let downloadLink = '';
-        let deleteLink = '';
+        let filename = '';
         if(status.status === 'finished') {
-          downloadLink = `<a class="download-csv" href="${requestedUrl}/static/${file.name}.csv" target="_blank"><i class="fa fa-download"></i></a>`;
+          filename = file.name;
         }
         resp.push({
           timestamp: status.time,
-          user: status.user,
+          username: status.user,
           datasourceRef: status.datasourceRef,
           rowsCount: status.exportedRows,
           progress: status.progress,
           status: status.status,
-          downloadLink,
+          filename,
         });
       }
 

src/services/exporter.ts

@@ -21,7 +21,7 @@ const TIMESTAMP_COLUMN = 'timestamp';
 export class Exporter {
   private exportedRows = 0;
   private createdTimestamp: number;
-  private user: string;
+  private username: string;
   private datasourceRef: DataSourceRef;
 
   private initCsvStream() {
@@ -44,9 +44,9 @@ export class Exporter {
       let time = moment().valueOf();
       let data = {
         time,
-        user: this.user,
+        username: this.username,
         exportedRows: this.exportedRows,
-        progress: progress.toLocaleString('en', { style: 'percent' }),
+        progress: progress,
         status,
         datasourceRef: this.datasourceRef,
       };
@@ -58,11 +58,11 @@ export class Exporter {
     }
   }
 
-  public async export(data: Target[], datasourceUrl: string, user: string, from: number, to: number) {
-    this.user = user;
+  public async export(data: Target[], datasourceUrl: string, username: string, from: number, to: number) {
+    this.username = username;
 
     this.validateTargets(datasourceUrl, data);
-    
+
     // console.log('ds', data[0].datasource)
     const targets = data.map(target => {
       console.log({
@@ -72,17 +72,18 @@ export class Exporter {
       return {
         ...target,
         metric: new QueryConfig(
-          QueryType.GRAFANA, 
+          QueryType.GRAFANA,
           {
             ...target.datasource,
             url: datasourceUrl
-          }, 
+          },
           target.panel.targets
         )
       }
     });
 
-    this.datasourceRef = data.length === 1 ? data[0].datasource : { uid: 'all', type: 'all' };
+    const datasource = data[0].datasource;
+    this.datasourceRef = data.length === 1 ? { uid: datasource.uid, type: datasource.type } : { uid: 'all', type: 'all' };
 
     await this.updateStatus(ExportStatus.EXPORTING, 0);
 

src/types/index.ts

@@ -80,7 +80,8 @@ export interface PanelModel {
   alert?: any;
 }
 
-export type Task = DataQuery & {
+// TODO: rename to query
+export type Task = Omit<DataQuery, 'datasource'> & {
   selected: boolean;
   panel: PanelModel;
   datasource: DataSourceSettings;
@@ -88,10 +89,10 @@ export type Task = DataQuery & {
 
 export type TaskTableRowConfig = {
   timestamp: number;
-  user: string;
+  username: string;
   datasourceRef: DataSourceRef;
   rowsCount: number;
   progress: number;
   status: string;
-  downloadLink: string;
+  filename?: string;
 };