refacto: Changing click cooldown to daily actions for users and teams

server/db/usersDb.js

@@ -13,6 +13,29 @@ export async function initUsersSchema() {
       created_at TIMESTAMPTZ NOT NULL DEFAULT NOW()
     );
   `);
+  await initUserActionQuotaSchema();
+}
+
+export async function initUserActionQuotaSchema() {
+  await usersPool.query(`
+    CREATE TABLE IF NOT EXISTS user_action_quota (
+      user_id INTEGER PRIMARY KEY REFERENCES users(id) ON DELETE CASCADE,
+      actions_remaining INTEGER NOT NULL DEFAULT 0,
+      quota_reset_at TIMESTAMPTZ NOT NULL DEFAULT '1970-01-01 00:00:00+00'
+    );
+  `);
+}
+
+// ── Helpers ───────────────────────────────────────────────────────────────────
+
+/** Returns the next noon (12:00:00) UTC after the current moment. */
+export function nextNoonUtc() {
+  const now = new Date();
+  const noon = new Date(Date.UTC(
+    now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate(), 12, 0, 0, 0
+  ));
+  if (noon <= now) noon.setUTCDate(noon.getUTCDate() + 1);
+  return noon;
 }
 
 // ── Queries ───────────────────────────────────────────────────────────────────
@@ -50,4 +73,42 @@ export async function getTeamPlayerCounts() {
   const result = { blue: 0, red: 0 };
   for (const row of rows) result[row.team] = row.count;
   return result;
+}
+
+// ── User action quota ─────────────────────────────────────────────────────────
+
+/** Returns the current quota row for a user, or null if it doesn't exist. */
+export async function getUserActionsRow(userId) {
+  const { rows } = await usersPool.query(
+    `SELECT actions_remaining, quota_reset_at FROM user_action_quota WHERE user_id = $1`,
+    [userId]
+  );
+  return rows[0] ?? null;
+}
+
+/** Insert or overwrite the quota row for a user. */
+export async function resetUserActions(userId, actionsRemaining, quotaResetAt) {
+  await usersPool.query(
+    `INSERT INTO user_action_quota (user_id, actions_remaining, quota_reset_at)
+     VALUES ($1, $2, $3)
+     ON CONFLICT (user_id) DO UPDATE
+       SET actions_remaining = $2,
+           quota_reset_at    = $3`,
+    [userId, actionsRemaining, quotaResetAt]
+  );
+}
+
+/**
+ * Atomically decrements actions_remaining by 1 if > 0.
+ * Returns the updated row (with new actions_remaining), or null if already 0.
+ */
+export async function decrementUserActions(userId) {
+  const { rows } = await usersPool.query(
+    `UPDATE user_action_quota
+     SET actions_remaining = actions_remaining - 1
+     WHERE user_id = $1 AND actions_remaining > 0
+     RETURNING actions_remaining`,
+    [userId]
+  );
+  return rows[0] ?? null;
 }