add endpoint for list by tag

Author: nikhilsinhaparseable

src/handlers/http/modal/server.rs

@@ -307,6 +307,13 @@ impl Server {
                         .authorize(Action::ListDashboard),
                 ),
             )
+            .service(
+                web::resource("/list_by_tag/{tag}").route(
+                    web::get()
+                        .to(dashboards::list_dashboards_by_tag)
+                        .authorize(Action::ListDashboard),
+                ),
+            )
             .service(
                 web::scope("/{dashboard_id}")
                     .service(

src/handlers/http/users/dashboards.rs

@@ -204,6 +204,21 @@ pub async fn list_tags() -> Result<impl Responder, DashboardError> {
     Ok((web::Json(tags), StatusCode::OK))
 }
 
+pub async fn list_dashboards_by_tag(tag: Path<String>) -> Result<impl Responder, DashboardError> {
+    let tag = tag.into_inner();
+    if tag.is_empty() {
+        return Err(DashboardError::Metadata("Tag cannot be empty"));
+    }
+
+    let dashboards = DASHBOARDS.list_dashboards_by_tag(&tag).await;
+    let dashboard_summaries = dashboards
+        .iter()
+        .map(|dashboard| dashboard.to_summary())
+        .collect::<Vec<_>>();
+
+    Ok((web::Json(dashboard_summaries), StatusCode::OK))
+}
+
 #[derive(Debug, thiserror::Error)]
 pub enum DashboardError {
     #[error("Failed to connect to storage: {0}")]

src/users/dashboards.rs

@@ -345,6 +345,21 @@ impl Dashboards {
         tags
     }
 
+    /// List dashboards by tag
+    /// This function returns a list of dashboards that have the specified tag
+    pub async fn list_dashboards_by_tag(&self, tag: &str) -> Vec<Dashboard> {
+        let dashboards = self.0.read().await;
+        dashboards
+            .iter()
+            .filter(|d| {
+                d.tags
+                    .as_ref()
+                    .map_or(false, |tags| tags.contains(&tag.to_string()))
+            })
+            .cloned()
+            .collect()
+    }
+
     /// Ensure the user is the owner of the dashboard
     /// This function is called when updating or deleting a dashboard
     /// check if the user is the owner of the dashboard