implement (most) of stats endpoint

1 files changed, 59 insertions, 1 deletions

diff --git a/rust/fatcat-api/src/server.rs b/rust/fatcat-api/src/server.rs
index 2716dfc5..7eb73122 100644
--- a/rust/fatcat-api/src/server.rs
+++ b/rust/fatcat-api/src/server.rs
@@ -38,7 +38,7 @@ use swagger::{ApiError, Context, XSpanId};
 use models;
 use {AcceptEditgroupResponse, Api, CreateContainerBatchResponse, CreateContainerResponse, CreateCreatorBatchResponse, CreateCreatorResponse, CreateEditgroupResponse, CreateFileBatchResponse,
      CreateFileResponse, CreateReleaseBatchResponse, CreateReleaseResponse, CreateWorkBatchResponse, CreateWorkResponse, GetContainerResponse, GetCreatorReleasesResponse, GetCreatorResponse,
-     GetEditgroupResponse, GetEditorChangelogResponse, GetEditorResponse, GetFileResponse, GetReleaseFilesResponse, GetReleaseResponse, GetWorkReleasesResponse, GetWorkResponse,
+     GetEditgroupResponse, GetEditorChangelogResponse, GetEditorResponse, GetFileResponse, GetReleaseFilesResponse, GetReleaseResponse, GetStatsResponse, GetWorkReleasesResponse, GetWorkResponse,
      LookupContainerResponse, LookupCreatorResponse, LookupFileResponse, LookupReleaseResponse};
 
 header! { (Warning, "Warning") => [String] }
@@ -2101,6 +2101,64 @@ where
 
     let api_clone = api.clone();
     router.get(
+        "/v0/stats",
+        move |req: &mut Request| {
+            let mut context = Context::default();
+
+            // Helper function to provide a code block to use `?` in (to be replaced by the `catch` block when it exists).
+            fn handle_request<T>(req: &mut Request, api: &T, context: &mut Context) -> Result<Response, Response>
+            where
+                T: Api,
+            {
+                context.x_span_id = Some(req.headers.get::<XSpanId>().map(XSpanId::to_string).unwrap_or_else(|| self::uuid::Uuid::new_v4().to_string()));
+                context.auth_data = req.extensions.remove::<AuthData>();
+                context.authorization = req.extensions.remove::<Authorization>();
+
+                // Query parameters (note that non-required or collection query parameters will ignore garbage values, rather than causing a 400 response)
+                let query_params = req.get::<UrlEncodedQuery>().unwrap_or_default();
+                let param_more = query_params.get("more").and_then(|list| list.first()).and_then(|x| x.parse::<String>().ok());
+
+                match api.get_stats(param_more, context).wait() {
+                    Ok(rsp) => match rsp {
+                        GetStatsResponse::Success(body) => {
+                            let body_string = serde_json::to_string(&body).expect("impossible to fail to serialize");
+
+                            let mut response = Response::with((status::Status::from_u16(200), body_string));
+                            response.headers.set(ContentType(mimetypes::responses::GET_STATS_SUCCESS.clone()));
+
+                            context.x_span_id.as_ref().map(|header| response.headers.set(XSpanId(header.clone())));
+
+                            Ok(response)
+                        }
+                        GetStatsResponse::GenericError(body) => {
+                            let body_string = serde_json::to_string(&body).expect("impossible to fail to serialize");
+
+                            let mut response = Response::with((status::Status::from_u16(0), body_string));
+                            response.headers.set(ContentType(mimetypes::responses::GET_STATS_GENERIC_ERROR.clone()));
+
+                            context.x_span_id.as_ref().map(|header| response.headers.set(XSpanId(header.clone())));
+
+                            Ok(response)
+                        }
+                    },
+                    Err(_) => {
+                        // Application code returned an error. This should not happen, as the implementation should
+                        // return a valid response.
+                        Err(Response::with((status::InternalServerError, "An internal error occurred".to_string())))
+                    }
+                }
+            }
+
+            handle_request(req, &api_clone, &mut context).or_else(|mut response| {
+                context.x_span_id.as_ref().map(|header| response.headers.set(XSpanId(header.clone())));
+                Ok(response)
+            })
+        },
+        "GetStats",
+    );
+
+    let api_clone = api.clone();
+    router.get(
         "/v0/work/:id",
         move |req: &mut Request| {
             let mut context = Context::default();