try out a generic ApiResponse

src/server.rs

@@ -4,11 +4,30 @@ use actix_web::{web, App, Error, HttpResponse, HttpServer};
 use futures::Future;
 use lootalot_db::{DbApi, Pool, QueryResult};
 use lootalot_db::{Item, LootManager};
+use lootalot_db as db;
 use serde::{Deserialize, Serialize};
 use std::env;
+use std::default;
 
 type AppPool = web::Data<Pool>;
 
+#[derive(Serialize, Deserialize, Debug)]
+enum Update {
+    NoUpdate,
+    Wealth,
+    ItemAdded,
+    ItemRemoved,
+    ClaimAdded,
+    ClaimRemoved,
+}
+
+#[derive(Serialize, Deserialize, Debug, Default)]
+struct ApiResponse<T> {
+    value: Option<T>, // The value requested, if any
+    notify: Option<String>, // A text to notify user, if relevant
+    updates: Option<Vec<Update>>, // A list of updates, if any
+    errors: Option<String>, // A text describing errors, if any
+}
 /// Wraps call to the DbApi and process its result as a async HttpResponse
 ///
 /// Provides a convenient way to call the api inside a route definition. Given a connection pool,
@@ -33,7 +52,7 @@ type AppPool = web::Data<Pool>;
 pub fn db_call<J, Q>(pool: AppPool, query: Q) -> impl Future<Item = HttpResponse, Error = Error>
 where
     J: serde::ser::Serialize + Send + 'static,
-    Q: Fn(DbConnection) -> QueryResult<J> + Send + 'static,
+    Q: Fn(DbConnection) -> ApiResponse<J> + Send + 'static,
 {
     let conn = pool.get().unwrap();
     web::block(move || query(conn)).then(|res| match res {
@@ -74,23 +93,54 @@ mod endpoints {
     }
 
     pub fn players_list(pool: AppPool) -> impl Future<Item = HttpResponse, Error = Error> {
-        db_call(pool, move |api| api.fetch_players())
+        db_call(pool, move |conn| {
+            let (value, errors) = match db::Players(conn).all() {
+                Ok(v) => (Some(v), None),
+                Err(e) => (None, Some(e.to_string())),
+            };
+            ApiResponse {
+                value,
+                errors,
+                ..Default::default()
+            }
+        })
     }
 
     pub fn player_loot(
         pool: AppPool,
         player_id: web::Path<i32>,
     ) -> impl Future<Item = HttpResponse, Error = Error> {
-        db_call(pool, move |conn| LootManager(&conn, *player_id).all())
+        db_call(pool, move |conn| {
+            let (value, errors) = {
+                match db::LootManager(&conn, *player_id).all() {
+                    Ok(v) => (Some(v), None),
+                    Err(e) => (None, Some(e.to_string())),
+                }
+            };
+            ApiResponse {
+                value,
+                errors,
+                ..Default::default()
+            }
+        })
     }
 
     pub fn update_wealth(
         pool: AppPool,
-        data: web::Json<WealthUpdate>,
+        (player, data): (web::Path<i32>, web::Json<WealthUpdate>),
     ) -> impl Future<Item = HttpResponse, Error = Error> {
-        db_call(pool, move |api| {
-            api.as_player(data.player_id)
-                .update_wealth(data.value_in_gp)
+        db_call(pool, move |conn| {
+            let (updates, errors) =
+                match db::AsPlayer(conn, player)
+                    .update_wealth(data.value_in_gp) {
+                        Ok(w) => (Some(vec![w.as_tuple(),]), None),
+                        Err(e) => (None, Some(e.to_string())),
+                    };
+            ApiResponse {
+                updates,
+                errors,
+                ..Default::default()
+            }
         })
     }