feat: Implement a net worth leaderboard by aggregating user balance and inventory item values.

src/commands/leveling/leaderboard.ts

@@ -1,8 +1,8 @@
 import { createCommand } from "@/lib/utils";
 import { SlashCommandBuilder } from "discord.js";
 import { DrizzleClient } from "@/lib/DrizzleClient";
-import { users } from "@/db/schema";
-import { desc } from "drizzle-orm";
+import { users, items, inventory } from "@/db/schema";
+import { desc, sql, eq } from "drizzle-orm";
 import { createWarningEmbed } from "@lib/embeds";
 import { getLeaderboardEmbed } from "@/modules/leveling/leveling.view";
 
@@ -12,30 +12,49 @@ export const leaderboard = createCommand({
         .setDescription("View the top players")
         .addStringOption(option =>
             option.setName("type")
-                .setDescription("Sort by XP or Balance")
+                .setDescription("Sort by XP, Balance, or Net Worth")
                 .setRequired(true)
                 .addChoices(
                     { name: "Level / XP", value: "xp" },
-                    { name: "Balance", value: "balance" }
+                    { name: "Balance", value: "balance" },
+                    { name: "Net Worth", value: "networth" }
                 )
         ),
     execute: async (interaction) => {
         await interaction.deferReply();
 
         const type = interaction.options.getString("type", true);
-        const isXp = type === "xp";
 
-        const leaders = await DrizzleClient.query.users.findMany({
-            orderBy: isXp ? desc(users.xp) : desc(users.balance),
-            limit: 10
-        });
+        let leaders;
+
+        if (type === 'networth') {
+            leaders = await DrizzleClient.select({
+                username: users.username,
+                level: users.level,
+                xp: users.xp,
+                balance: users.balance,
+                netWorth: sql<bigint>`${users.balance} + COALESCE(SUM(${items.price} * ${inventory.quantity}), 0)`.as('net_worth')
+            })
+                .from(users)
+                .leftJoin(inventory, eq(users.id, inventory.userId))
+                .leftJoin(items, eq(inventory.itemId, items.id))
+                .groupBy(users.id)
+                .orderBy(desc(sql`net_worth`))
+                .limit(10);
+        } else {
+            const isXp = type === "xp";
+            leaders = await DrizzleClient.query.users.findMany({
+                orderBy: isXp ? desc(users.xp) : desc(users.balance),
+                limit: 10
+            });
+        }
 
         if (leaders.length === 0) {
             await interaction.editReply({ embeds: [createWarningEmbed("No users found.", "Leaderboard")] });
             return;
         }
 
-        const embed = getLeaderboardEmbed(leaders, isXp ? 'xp' : 'balance');
+        const embed = getLeaderboardEmbed(leaders, type as 'xp' | 'balance' | 'networth');
 
         await interaction.editReply({ embeds: [embed] });
     }