Fix query failure when using template (#13)

Author: vincent-chung-paypay

package.json

@@ -1,6 +1,6 @@
 {
   "name": "quickwit-datasource",
-  "version": "0.8.1+paypay",
+  "version": "0.8.2+paypay",
   "description": "Quickwit datasource",
   "scripts": {
     "build": "webpack -c ./.config/webpack/webpack.config.ts --env production",

src/datasource/base.ts

@@ -402,7 +402,12 @@ export class BaseQuickwitDataSource
     }
 
     adhocFilters.forEach((filter) => {
-      finalQuery = addAddHocFilter(finalQuery, filter);
+      // Replace template variables in filter values
+      const interpolatedFilter = {
+        ...filter,
+        value: this.templateSrv.replace(filter.value),
+      };
+      finalQuery = addAddHocFilter(finalQuery, interpolatedFilter);
     });
 
     return finalQuery;