3 files changed, 56 insertions, 1 deletions
diff --git a/planetwars-server/src/db/bots.rs b/planetwars-server/src/db/bots.rs
index d99a459..108c692 100644
--- a/planetwars-server/src/db/bots.rs
+++ b/planetwars-server/src/db/bots.rs
@@ -11,7 +11,7 @@ pub struct NewBot<'a> {
     pub name: &'a str,
 }
 
-#[derive(Queryable, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Queryable, Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub struct Bot {
     pub id: i32,
     pub owner_id: Option<i32>,
diff --git a/planetwars-server/src/db/mod.rs b/planetwars-server/src/db/mod.rs
index 7a950c6..84ed2a6 100644
--- a/planetwars-server/src/db/mod.rs
+++ b/planetwars-server/src/db/mod.rs
@@ -1,4 +1,5 @@
 pub mod bots;
 pub mod matches;
+pub mod ratings;
 pub mod sessions;
 pub mod users;
diff --git a/planetwars-server/src/db/ratings.rs b/planetwars-server/src/db/ratings.rs
new file mode 100644
index 0000000..8262fed
--- /dev/null
+++ b/planetwars-server/src/db/ratings.rs
@@ -0,0 +1,54 @@
+use diesel::{prelude::*, PgConnection, QueryResult};
+use serde::{Deserialize, Serialize};
+
+use crate::db::bots::Bot;
+use crate::schema::{bots, ratings, users};
+
+#[derive(Queryable, Debug, Insertable, PartialEq, Serialize, Deserialize)]
+pub struct Rating {
+    pub bot_id: i32,
+    pub rating: f64,
+}
+
+pub fn get_rating(bot_id: i32, db_conn: &PgConnection) -> QueryResult<Option<f64>> {
+    ratings::table
+        .filter(ratings::bot_id.eq(bot_id))
+        .select(ratings::rating)
+        .first(db_conn)
+        .optional()
+}
+
+pub fn set_rating(bot_id: i32, rating: f64, db_conn: &PgConnection) -> QueryResult<usize> {
+    diesel::insert_into(ratings::table)
+        .values(Rating { bot_id, rating })
+        .on_conflict(ratings::bot_id)
+        .do_update()
+        .set(ratings::rating.eq(rating))
+        .execute(db_conn)
+}
+
+#[derive(Queryable, Serialize, Deserialize)]
+pub struct Author {
+    id: i32,
+    username: String,
+}
+
+#[derive(Queryable, Serialize, Deserialize)]
+pub struct RankedBot {
+    pub bot: Bot,
+    pub author: Option<Author>,
+    pub rating: f64,
+}
+
+pub fn get_bot_ranking(db_conn: &PgConnection) -> QueryResult<Vec<RankedBot>> {
+    bots::table
+        .left_join(users::table)
+        .inner_join(ratings::table)
+        .select((
+            bots::all_columns,
+            (users::id, users::username).nullable(),
+            ratings::rating,
+        ))
+        .order_by(ratings::rating.desc())
+        .get_results(db_conn)
+}