refacto: Displaying number of players for each team + adding logo at registration

server/db/gameDb.js

@@ -273,3 +273,17 @@ export async function getScores(worldSeed) {
   );
   return rows;
 }
+
+// ── Active player counts (players who have played in the current epoch) ───────
+
+export async function getActivePlayerCounts(worldSeed) {
+  const { rows } = await pool.query(
+    `SELECT team, COUNT(DISTINCT user_id)::int AS count
+     FROM user_cooldowns WHERE world_seed = $1
+     GROUP BY team`,
+    [worldSeed]
+  );
+  const result = { blue: 0, red: 0 };
+  for (const row of rows) result[row.team] = row.count;
+  return result;
+}

server/db/usersDb.js

@@ -42,4 +42,13 @@ export async function getUserById(id) {
     [id]
   );
   return rows[0] ?? null;
+}
+
+export async function getTeamPlayerCounts() {
+  const { rows } = await usersPool.query(
+    `SELECT team, COUNT(*)::int AS count FROM users GROUP BY team`
+  );
+  const result = { blue: 0, red: 0 };
+  for (const row of rows) result[row.team] = row.count;
+  return result;
 }

server/routes/auth.js

@@ -2,7 +2,7 @@ import express from "express";
 import bcrypt from "bcryptjs";
 import jwt from "jsonwebtoken";
 import { JWT_SECRET, authMiddleware } from "../middleware/auth.js";
-import { createUser, getUserByUsername, getUserById } from "../db/usersDb.js";
+import { createUser, getUserByUsername, getUserById, getTeamPlayerCounts } from "../db/usersDb.js";
 
 const router = express.Router();
 
@@ -67,6 +67,17 @@ router.post("/login", async (req, res) => {
   }
 });
 
+// GET /api/auth/player-counts
+router.get("/player-counts", async (_req, res) => {
+  try {
+    const counts = await getTeamPlayerCounts();
+    return res.json(counts);
+  } catch (e) {
+    console.error(e);
+    return res.status(500).json({ error: "database_error" });
+  }
+});
+
 // GET /api/auth/me
 router.get("/me", authMiddleware, async (req, res) => {
   try {

server/routes/game.js

@@ -18,6 +18,7 @@ import {
   setElementBonus,
   getDbCreatedAt,
   getVictoryPoints,
+  getActivePlayerCounts,
 } from "../db/gameDb.js";
 import { computeCell, rowToCellPayload } from "../helpers/cell.js";
 
@@ -246,6 +247,18 @@ router.get("/victory-points", async (_req, res) => {
   }
 });
 
+// GET /api/active-players
+router.get("/active-players", async (_req, res) => {
+  try {
+    const worldSeed = await ensureSeedEpoch();
+    const counts = await getActivePlayerCounts(worldSeed);
+    res.json(counts);
+  } catch (e) {
+    console.error(e);
+    res.status(500).json({ error: "database_error" });
+  }
+});
+
 // GET /api/scores
 router.get("/scores", async (_req, res) => {
   try {