Tonight

server-rs/src/routes/hexagon_stats.rs

@@ -19,6 +19,7 @@ use crate::parsing::{
 use crate::state::SharedState;
 
 use super::stats;
+use super::travel_time::{load_travel_data, parse_optional_travel, row_passes_travel_filters};
 
 #[derive(Serialize)]
 pub struct HistogramStats {
@@ -76,6 +77,9 @@ pub struct HexagonStatsParams {
     /// shortest travel time for this mode+slug (so it has journey data).
     pub journey_mode: Option<String>,
     pub journey_slug: Option<String>,
+    /// Pipe-separated travel time entries: `mode:slug|mode:slug:min:max`.
+    /// Optional min:max applies as a filter (exclude properties outside range).
+    pub travel: Option<String>,
     /// Share-link code; grants bbox-scoped access for unlicensed users.
     pub share: Option<String>,
 }
@@ -118,6 +122,9 @@ pub async fn get_hexagon_stats(
 
     let (fields_specified, field_set) = parse_field_set(params.fields.as_deref());
 
+    let travel_entries = parse_optional_travel(params.travel.as_deref())
+        .map_err(|err| (StatusCode::BAD_REQUEST, err).into_response())?;
+
     // Load travel time data for central_postcode selection (if requested)
     let journey_travel_data = match (&params.journey_mode, &params.journey_slug) {
         (Some(mode), Some(slug)) if state.travel_time_store.has_destination(mode, slug) => {
@@ -134,6 +141,8 @@ pub async fn get_hexagon_stats(
         let need_parent = needs_parent(resolution);
         let num_features = state.data.num_features;
         let feature_data = &state.data.feature_data;
+        let travel_data = load_travel_data(&state.travel_time_store, &travel_entries)?;
+        let has_travel = !travel_entries.is_empty();
 
         let (min_lat, min_lon, max_lat, max_lon) = h3_cell_bounds(cell, 0.001);
 
@@ -153,6 +162,12 @@ pub async fn get_hexagon_stats(
                         num_features,
                     )
                 {
+                    if has_travel {
+                        let postcode = state.data.postcode(row);
+                        if !row_passes_travel_filters(postcode, &travel_entries, &travel_data) {
+                            return;
+                        }
+                    }
                     matching_rows.push(row);
                 }
             });
@@ -235,6 +250,7 @@ pub async fn get_hexagon_stats(
             total_count,
             filters = num_filters,
             filters_raw = filters_str.as_deref().unwrap_or("-"),
+            travel_entries = travel_entries.len(),
             ms = format_args!("{:.1}", elapsed.as_secs_f64() * 1000.0),
             "GET /api/hexagon-stats"
         );