Track session standings so the dealer can settle up at the end of the night

The hand log answered "what happened in hand 12"; it couldn't answer "what
does Alice owe". Each resolved pot now records a per-seat ledger (what that
player put in, what they took down) alongside the payouts, and a Session
Standings panel sums it into one row per player — paid in, won, net, sorted
by who's up. The CSV export carries the same table, so one file covers both
the hand-by-hand trail and the cash-out numbers.

Keyed by seat id rather than name, so renaming or reseating a player doesn't
split their totals. Hands recorded before this change have no ledger and are
skipped rather than counted wrong.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_015bnp7xKUPFFSpwkYNFaPgb

JoshHeaps.Net/Pages/Casino/TexasHoldem.cshtml

@@ -86,6 +86,22 @@
                 </div>
             </details>
 
+            <details class="sidebarPanel">
+                <summary>Session Standings</summary>
+                <div class="panelBody">
+                    <div id="standingsTable">
+                        <div class="standingsRow standingsHeader">
+                            <span>Player</span>
+                            <span>In</span>
+                            <span>Won</span>
+                            <span>Net</span>
+                        </div>
+                        <div id="standingsList"></div>
+                    </div>
+                    <p id="standingsEmptyHint" class="fieldHint">Once you resolve a pot, everyone's running total for the night shows up here.</p>
+                </div>
+            </details>
+
             <details class="sidebarPanel">
                 <summary>Hand History</summary>
                 <div class="panelBody">
@@ -169,6 +185,15 @@
     </div>
 </template>
 
+<template id="standingsRowTemplate">
+    <div class="standingsRow">
+        <span class="standingsName"></span>
+        <span class="standingsIn"></span>
+        <span class="standingsWon"></span>
+        <span class="standingsNet"></span>
+    </div>
+</template>
+
 <template id="handHistoryRowTemplate">
     <div class="handHistoryRow">
         <div class="handHistoryRowHeader">

JoshHeaps.Net/wwwroot/css/casino/holdem.css

@@ -617,6 +617,63 @@ body {
     padding: 0.3rem 0.5rem;
 }
 
+#standingsTable {
+    max-height: 260px;
+    overflow-y: auto;
+}
+
+.standingsRow {
+    display: grid;
+    grid-template-columns: minmax(0, 1fr) auto auto auto;
+    gap: 0.5rem;
+    align-items: baseline;
+    padding: 0.3rem 0.1rem;
+    font-size: 0.78rem;
+    border-bottom: 1px solid #232323;
+}
+
+.standingsRow > span:not(:first-child) {
+    text-align: right;
+    font-variant-numeric: tabular-nums;
+    min-width: 4.5rem;
+}
+
+.standingsHeader {
+    color: #777;
+    font-size: 0.7rem;
+    letter-spacing: 0.04em;
+    text-transform: uppercase;
+    border-bottom-color: #3a3a3a;
+    position: sticky;
+    top: 0;
+    background: #1b1b1b;
+}
+
+.standingsName {
+    color: #eee;
+    overflow: hidden;
+    text-overflow: ellipsis;
+    white-space: nowrap;
+}
+
+.standingsIn,
+.standingsWon {
+    color: #999;
+}
+
+.standingsNet {
+    color: #bbb;
+    font-weight: 600;
+}
+
+.standingsNet.netUp {
+    color: #4ec97a;
+}
+
+.standingsNet.netDown {
+    color: #e07b7b;
+}
+
 #handHistoryList {
     display: flex;
     flex-direction: column;

JoshHeaps.Net/wwwroot/js/casino/holdem/handHistoryExport.js

@@ -15,7 +15,7 @@ const HandHistoryExport = {
         }
     },
 
-    toCsv(handHistory) {
+    toCsv(handHistory, standings = []) {
         const rows = [["Hand #", "Time", "Pot", "Payouts"]];
         // handHistory is stored newest-first; the export reads better oldest-first.
         [...handHistory].reverse().forEach(entry => {
@@ -29,6 +29,18 @@ const HandHistoryExport = {
                 payouts,
             ]);
         });
+
+        // The settle-up numbers go in the same file as the hands they came from, so a
+        // dealer handing over one export isn't asked for a second one at cash-out.
+        if (standings.length > 0) {
+            rows.push([]);
+            rows.push(["Session Standings"]);
+            rows.push(["Player", "Paid In", "Won", "Net"]);
+            standings.forEach(row => {
+                rows.push([row.name, Money.format(row.in), Money.format(row.won), Money.formatSigned(row.net)]);
+            });
+        }
+
         return rows.map(row => row.map(f => this.csvField(f)).join(",")).join("\r\n");
     },
 
@@ -39,8 +51,8 @@ const HandHistoryExport = {
         return `holdem-hand-history-${stamp}.csv`;
     },
 
-    download(handHistory) {
+    download(handHistory, standings = []) {
-        const csv = this.toCsv(handHistory);
+        const csv = this.toCsv(handHistory, standings);
         const blob = new Blob([csv], { type: "text/csv;charset=utf-8;" });
         const url = URL.createObjectURL(blob);
         const link = document.createElement("a");

JoshHeaps.Net/wwwroot/js/casino/holdem/main.js

@@ -85,6 +85,6 @@ document.addEventListener("DOMContentLoaded", () => {
 
     document.getElementById("exportHistoryBtn").addEventListener("click", () => {
         if ((state.handHistory || []).length === 0) return;
-        HandHistoryExport.download(state.handHistory);
+        HandHistoryExport.download(state.handHistory, HoldemState.sessionStandings(state));
     });
 });

JoshHeaps.Net/wwwroot/js/casino/holdem/potWizard.js

@@ -37,7 +37,7 @@ const PotWizard = {
     },
 
     labelFor(player, seatIndex) {
-        const name = player.name && player.name.trim() ? player.name.trim() : `Seat ${seatIndex + 1}`;
+        const name = HoldemState.displayName(player, seatIndex);
         const cards = (player.cards || []).filter(Boolean).join(" ");
         return cards ? `${name} (${cards})` : name;
     },
@@ -176,6 +176,7 @@ const PotWizard = {
         applyBtn.textContent = "Start Next Hand";
         applyBtn.addEventListener("click", () => {
             const payouts = Array.from(this.totals.entries()).map(([id, amount]) => ({
+                id,
                 label: this.playerLabelById.get(id),
                 amount,
             }));

JoshHeaps.Net/wwwroot/js/casino/holdem/render.js

@@ -30,6 +30,7 @@ const Render = {
         this.updatePotBadge();
         this.renderSetupFields();
         this.renderTableHint();
+        this.renderStandings();
         this.renderHandHistory();
     },
 
@@ -70,7 +71,7 @@ const Render = {
     },
 
     puckLabel(player, seatIndex) {
-        return player.name && player.name.trim() ? player.name.trim() : `Seat ${seatIndex + 1}`;
+        return HoldemState.displayName(player, seatIndex);
     },
 
     renderSeats() {
@@ -351,6 +352,34 @@ const Render = {
         });
     },
 
+    // ---- Session standings ----
+
+    renderStandings() {
+        const list = document.getElementById("standingsList");
+        const emptyHint = document.getElementById("standingsEmptyHint");
+        const table = document.getElementById("standingsTable");
+        const standings = HoldemState.sessionStandings(this.state);
+
+        list.innerHTML = "";
+        emptyHint.hidden = standings.length > 0;
+        table.hidden = standings.length === 0;
+
+        const template = document.getElementById("standingsRowTemplate");
+        standings.forEach(row => {
+            const node = template.content.firstElementChild.cloneNode(true);
+            node.querySelector(".standingsName").textContent = row.name;
+            node.querySelector(".standingsIn").textContent = Money.format(row.in);
+            node.querySelector(".standingsWon").textContent = Money.format(row.won);
+
+            const netEl = node.querySelector(".standingsNet");
+            netEl.textContent = Money.formatSigned(row.net);
+            netEl.classList.toggle("netUp", row.net > 0);
+            netEl.classList.toggle("netDown", row.net < 0);
+
+            list.appendChild(node);
+        });
+    },
+
     // ---- Hand counter + history ----
 
     formatHandTime(timestamp) {
@@ -391,6 +420,15 @@ const Money = {
         const value = Number(amount) || 0;
         return `$${value.toLocaleString(undefined, { minimumFractionDigits: 2, maximumFractionDigits: 2 })}`;
     },
+
+    // "+$40.00" / "-$40.00" rather than "$-40.00" — a standings column is read at a
+    // glance, and the sign belongs out front where the eye lands first.
+    formatSigned(amount) {
+        const value = Number(amount) || 0;
+        if (value > 0) return `+${this.format(value)}`;
+        if (value < 0) return `-${this.format(Math.abs(value))}`;
+        return this.format(0);
+    },
 };
 
 if (typeof module !== "undefined" && module.exports) {

JoshHeaps.Net/wwwroot/js/casino/holdem/state.js

@@ -88,6 +88,12 @@ const HoldemState = {
         return state;
     },
 
+    // What to call a seat in logs, payouts and standings when the dealer hasn't
+    // typed a name in yet.
+    displayName(player, seatIndex) {
+        return player.name && player.name.trim() ? player.name.trim() : `Seat ${seatIndex + 1}`;
+    },
+
     // Contribution the table calculator will treat this player as having put in.
     computeContribution(player, chipLegend, basePotAmount) {
         if (!player.inHand) return 0;
@@ -146,17 +152,32 @@ const HoldemState = {
 
     // Appends a resolved-pot record to the running session log a dealer can point to
     // for chip-count disputes, then advances the hand counter. `payouts` is
-    // [{ label, amount }, ...] — who got paid what out of this hand's pot(s).
+    // [{ id, label, amount }, ...] — who got paid what out of this hand's pot(s).
+    //
+    // Must be called before startNextHand() clears the seats: the per-player `ledger`
+    // it stores alongside the payouts is what session standings are summed from later,
+    // and it needs this hand's contributions while they're still on the table.
     recordHand(state, payouts) {
         if (typeof state.handNumber !== "number") state.handNumber = 1;
         if (!Array.isArray(state.handHistory)) state.handHistory = [];
 
         const pot = payouts.reduce((sum, p) => sum + p.amount, 0);
+        const wonById = new Map(payouts.map(p => [p.id, p.amount]));
+        const ledger = state.seats
+            .map((player, index) => ({
+                id: player.id,
+                name: this.displayName(player, index),
+                in: this.computeContribution(player, state.chipLegend, state.basePotAmount),
+                won: wonById.get(player.id) || 0,
+            }))
+            .filter(row => row.in > 0 || row.won > 0);
+
         state.handHistory.unshift({
             handNumber: state.handNumber,
             timestamp: Date.now(),
             pot,
             payouts,
+            ledger,
         });
         if (state.handHistory.length > this.MAX_HISTORY_ENTRIES) {
             state.handHistory.length = this.MAX_HISTORY_ENTRIES;
@@ -168,6 +189,34 @@ const HoldemState = {
         state.handHistory = [];
         state.handNumber = 1;
     },
+
+    // Running per-player totals for the whole session, so a dealer settling up at the
+    // end of the night reads one number per person instead of adding up every hand.
+    // Keyed by seat id, which survives renames and reseating; hands recorded before
+    // the ledger existed simply don't contribute to the totals.
+    sessionStandings(state) {
+        const totals = new Map();
+
+        (state.handHistory || []).forEach(entry => {
+            (entry.ledger || []).forEach(row => {
+                // History is newest-first, so the first name seen for an id is the
+                // most recent one the dealer typed.
+                const running = totals.get(row.id) || { id: row.id, name: row.name, in: 0, won: 0 };
+                running.in += row.in;
+                running.won += row.won;
+                totals.set(row.id, running);
+            });
+        });
+
+        return Array.from(totals.values())
+            .map(t => ({
+                ...t,
+                in: Math.round(t.in * 100) / 100,
+                won: Math.round(t.won * 100) / 100,
+                net: Math.round((t.won - t.in) * 100) / 100,
+            }))
+            .sort((a, b) => b.net - a.net);
+    },
 };
 
 if (typeof module !== "undefined" && module.exports) {