update

backend/src/repositories/node_repository.rs

@@ -0,0 +1,37 @@
+use scylla::Session;
+use std::sync::Arc;
+use crate::domain::node::MapNode;
+use std::error::Error;
+
+#[cfg_attr(test, mockall::automock)]
+#[async_trait::async_trait]
+pub trait NodeRepositoryTrait: Send + Sync {
+    async fn find_nodes_in_tile(&self, z: i32, x: i32, y: i32) -> Result<Vec<MapNode>, Box<dyn Error + Send + Sync>>;
+}
+
+pub struct NodeRepository {
+    session: Arc<Session>,
+}
+
+impl NodeRepository {
+    pub fn new(session: Arc<Session>) -> Self {
+        Self { session }
+    }
+}
+
+#[async_trait::async_trait]
+impl NodeRepositoryTrait for NodeRepository {
+    async fn find_nodes_in_tile(&self, z: i32, x: i32, y: i32) -> Result<Vec<MapNode>, Box<dyn Error + Send + Sync>> {
+        let query = "SELECT id, lat, lon, tags FROM map_data.nodes WHERE zoom = ? AND tile_x = ? AND tile_y = ?";
+        let rows = self.session.query(query, (z, x, y)).await?.rows.unwrap_or_default();
+        
+        let mut nodes = Vec::with_capacity(rows.len());
+        for row in rows {
+            let (id, lat, lon, tags) = row.into_typed::<(i64, f64, f64, std::collections::HashMap<String, String>)>()
+                .map_err(|e| Box::<dyn Error + Send + Sync>::from(format!("Serialization error: {}", e)))?;
+            
+            nodes.push(MapNode { id, lat, lon, tags });
+        }
+        Ok(nodes)
+    }
+}