chore: separate backend from frontend

src/route/meta.rs

@@ -0,0 +1,86 @@
+//! Application metadata endpoint for retrieving version and name information.
+
+use poem::Result;
+use poem_openapi::{ApiResponse, Object, OpenApi, payload::Json};
+
+use super::ApiCategory;
+use crate::settings::ApplicationSettings;
+
+#[derive(Object, Debug, Clone, serde::Serialize, serde::Deserialize)]
+struct Meta {
+    version: String,
+    name: String,
+}
+
+impl From<&MetaApi> for Meta {
+    fn from(value: &MetaApi) -> Self {
+        let version = value.version.clone();
+        let name = value.name.clone();
+        Self { version, name }
+    }
+}
+
+#[derive(ApiResponse)]
+enum MetaResponse {
+    /// Success
+    #[oai(status = 200)]
+    Meta(Json<Meta>),
+    /// Too Many Requests - rate limit exceeded
+    #[oai(status = 429)]
+    #[allow(dead_code)]
+    TooManyRequests,
+}
+
+/// API for retrieving application metadata (name and version).
+#[derive(Clone)]
+pub struct MetaApi {
+    name: String,
+    version: String,
+}
+
+impl From<&ApplicationSettings> for MetaApi {
+    fn from(value: &ApplicationSettings) -> Self {
+        let name = value.name.clone();
+        let version = value.version.clone();
+        Self { name, version }
+    }
+}
+
+#[OpenApi(tag = "ApiCategory::Meta")]
+impl MetaApi {
+    #[oai(path = "/meta", method = "get")]
+    async fn meta(&self) -> Result<MetaResponse> {
+        tracing::event!(target: "backend::meta", tracing::Level::DEBUG, "Accessing meta endpoint");
+        Ok(MetaResponse::Meta(Json(self.into())))
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    #[tokio::test]
+    async fn meta_endpoint_returns_correct_data() {
+        let app = crate::get_test_app();
+        let cli = poem::test::TestClient::new(app);
+        let resp = cli.get("/api/meta").send().await;
+        resp.assert_status_is_ok();
+
+        let json_value: serde_json::Value = resp.json().await.value().deserialize();
+
+        assert!(
+            json_value.get("version").is_some(),
+            "Response should have version field"
+        );
+        assert!(
+            json_value.get("name").is_some(),
+            "Response should have name field"
+        );
+    }
+
+    #[tokio::test]
+    async fn meta_endpoint_returns_200_status() {
+        let app = crate::get_test_app();
+        let cli = poem::test::TestClient::new(app);
+        let resp = cli.get("/api/meta").send().await;
+        resp.assert_status_is_ok();
+    }
+}