basic leaderboard, %b command

src/commands/gambling/balance.rs

@@ -3,7 +3,7 @@ use crate::common::{self, Context, Error};
 use poise::serenity_prelude as serenity;
 
 /// Tells you what your or someone else's balance is
-#[poise::command(slash_command, prefix_command, aliases("bal"))]
+#[poise::command(slash_command, prefix_command, aliases("bal", "b"))]
 pub async fn balance(ctx: Context<'_>, user: Option<serenity::User>) -> Result<(), Error> {
     let user = user.as_ref().unwrap_or(ctx.author());
     let db = &ctx.data().database;

src/commands/gambling/leaderboard.rs

@@ -0,0 +1,30 @@
+
+use crate::common::{Context, Error};
+use poise::serenity_prelude::UserId;
+use sqlx::Row;
+
+/// Display a leaderboard of the top 10 wealthiest players
+#[poise::command(slash_command, prefix_command)]
+pub async fn leaderboard(ctx: Context<'_>) -> Result<(), Error> {
+    let db = &ctx.data().database;
+
+    let rows = sqlx::query(
+        r#"
+        SELECT id, balance FROM bank
+        ORDER BY balance DESC
+        LIMIT 10
+        "#
+    ).fetch_all(db).await?;
+
+    let users: Vec<(_, i32)> = rows.iter().map(|row| (UserId::new(row.get::<i64, _>(0) as u64), row.get(1))).collect();
+    let mut output = String::new();
+
+    for (id, balance) in users {
+        let user = id.to_user(ctx).await?;
+        output += &format!("{} - {}\n", user.display_name(), balance);
+    }
+
+    ctx.reply(format!("```\n{output}```")).await?;
+
+    Ok(())
+}

src/commands/mod.rs

@@ -17,6 +17,7 @@ pub fn commands() -> Vec<Command<Data, Error>> {
         gambling::give::give(),
         gambling::wager::wager(),
         gambling::daily::daily(),
+        gambling::leaderboard::leaderboard(),
         eval::eval(),
         self_roles::role(),
     ]