Changes

server-rs/src/routes/streetview.rs

@@ -0,0 +1,84 @@
+use std::sync::Arc;
+
+use axum::http::StatusCode;
+use axum::response::{IntoResponse, Json};
+use serde::{Deserialize, Serialize};
+use tracing::warn;
+
+use crate::state::AppState;
+
+#[derive(Deserialize)]
+pub struct StreetViewQuery {
+    lat: f64,
+    lon: f64,
+}
+
+#[derive(Deserialize)]
+struct GoogleMetadataResponse {
+    status: String,
+    #[serde(default)]
+    pano_id: String,
+}
+
+#[derive(Serialize)]
+struct StreetViewResponse {
+    status: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pano_id: Option<String>,
+}
+
+pub async fn get_streetview(
+    state: Arc<AppState>,
+    query: axum::extract::Query<StreetViewQuery>,
+) -> impl IntoResponse {
+    let url = format!(
+        "https://maps.googleapis.com/maps/api/streetview/metadata?location={},{}&radius=1000&source=outdoor&key={}",
+        query.lat, query.lon, state.google_maps_api_key
+    );
+
+    let resp = match state.http_client.get(&url).send().await {
+        Ok(r) => r,
+        Err(e) => {
+            warn!("Street View metadata request failed: {e}");
+            return (
+                StatusCode::BAD_GATEWAY,
+                Json(StreetViewResponse {
+                    status: "ERROR".to_string(),
+                    pano_id: None,
+                }),
+            );
+        }
+    };
+
+    let meta: GoogleMetadataResponse = match resp.json().await {
+        Ok(m) => m,
+        Err(e) => {
+            warn!("Failed to parse Street View metadata: {e}");
+            return (
+                StatusCode::BAD_GATEWAY,
+                Json(StreetViewResponse {
+                    status: "ERROR".to_string(),
+                    pano_id: None,
+                }),
+            );
+        }
+    };
+
+    if meta.status == "OK" {
+        (
+            StatusCode::OK,
+            Json(StreetViewResponse {
+                status: "OK".to_string(),
+                pano_id: Some(meta.pano_id),
+            }),
+        )
+    } else {
+        (
+            StatusCode::OK,
+            Json(StreetViewResponse {
+                status: meta.status,
+                pano_id: None,
+            }),
+        )
+    }
+}