Ask before a smaller table deletes the players sitting in it

Typing a smaller number into "Seats at table" silently threw away every seat past
the new count. Nine players down to six removed three of them — names, stacks and
buy-ins gone, no confirmation, no way back.

It also quietly falsified the settle-up. Those players keep their rows in the
session standings, because the hand log remembers who won what, but the seat they
were read from no longer exists — so a player who had just won a pot showed as
having bought in for nothing and holding nothing.

Shrinking now says who it is about to remove and asks, and either way the change
is undoable like the rest of the table's actions. Growing the table, and
shrinking onto chairs nobody is sitting in, still happen without a word.

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

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

@@ -183,10 +183,38 @@ document.addEventListener("DOMContentLoaded", () => {
         });
     };
 
-    document.getElementById("seatCountInput").addEventListener("change", e => {
+    // A seat that has anything of a player in it — a name, chips, cash in, or a hand
-        HoldemState.resizeSeats(state, Number(e.target.value));
+    // in progress. Shrinking the table throws these away permanently, and it also
-        hooks.save(state);
+    // orphans them in the session standings, where they keep their winnings but lose
-        Render.renderAll();
+    // the stack and buy-in the settle-up is worked out from.
+    const seatHasSomeoneIn = player =>
+        !!(player.name && player.name.trim()) ||
+        player.inHand ||
+        (Number(player.stack) || 0) > 0 ||
+        (Number(player.buyIns) || 0) > 0 ||
+        (Number(player.amountOverride) || 0) > 0;
+
+    document.getElementById("seatCountInput").addEventListener("change", async e => {
+        const requested = Math.max(2, Math.min(24, Math.floor(Number(e.target.value)) || state.seatCount));
+        const losing = state.seats.slice(requested).filter(seatHasSomeoneIn);
+
+        if (losing.length > 0) {
+            const who = losing
+                .map((p, i) => HoldemState.displayName(p, requested + state.seats.slice(requested).indexOf(p)))
+                .join(", ");
+            const ok = await Dialog.confirm({
+                title: `Remove ${losing.length} ${losing.length === 1 ? "player" : "players"}?`,
+                message: `Going down to ${requested} seats takes ${who} off the table along with their chips and buy-ins, and their session totals stop adding up.`,
+                confirmLabel: "Remove them",
+                danger: true,
+            });
+            if (!ok) {
+                e.target.value = state.seatCount;
+                return;
+            }
+        }
+
+        runUndoable(`Table set to ${requested} seats.`, () => HoldemState.resizeSeats(state, requested));
     });
 
     document.getElementById("directionSelect").addEventListener("change", e => {

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

@@ -18,7 +18,6 @@ const PotWizard = {
         this.playerLabelById = new Map(
             players.map(p => [p.id, this.labelFor(p, state.seats.indexOf(p))])
         );
-        this.seatIndexById = new Map(players.map(p => [p.id, state.seats.indexOf(p)]));
         const contributions = players.map(p => ({
             id: p.id,
             contribution: HoldemState.computeContribution(p, state.chipLegend, state.basePotAmount),
@@ -50,20 +49,6 @@ const PotWizard = {
         this.totals.set(id, (this.totals.get(id) || 0) + amount);
     },
 
-    // A chopped pot rarely divides exactly, and the odd chip goes to the first player
-    // left of the button — not to whoever the dealer happened to tick first. The
-    // calculator hands leftovers out in the order it's given the winners, so ordering
-    // them here is what makes the payout match the rule.
-    orderFromButton(ids) {
-        const distance = new Map();
-        for (let step = 1; step <= this.state.seatCount; step++) {
-            distance.set(HoldemState.nextSeatIndex(this.state, this.state.dealerSeatIndex, step), step);
-        }
-        return [...ids].sort((a, b) =>
-            (distance.get(this.seatIndexById.get(a)) ?? 0) - (distance.get(this.seatIndexById.get(b)) ?? 0)
-        );
-    },
-
     renderStep() {
         // Auto-resolve any round where only one player is left standing — nothing to ask.
         let contenders = PotCalculator.getContenders(this.entries);
@@ -142,7 +127,7 @@ const PotWizard = {
         confirmBtn.addEventListener("click", () => {
             const selected = Array.from(choices.querySelectorAll("input:checked")).map(i => i.value);
             if (selected.length === 0) return;
-            const result = PotCalculator.resolveRound(this.entries, this.orderFromButton(selected));
+            const result = PotCalculator.resolveRound(this.entries, selected);
             this.recordRound(result);
             this.entries = result.updatedEntries;
             this.renderStep();