Expose grouped Truthtrance current-fact questions

components/truth-fact-expression-fields.tsx

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+'use client';
+
+import type { ReactElement } from 'react';
+import type { GameView } from '@/game/engine';
+import type { TruthFact } from '@/game/truthtrance';
+import {
+  TRUTH_FACT_MAX_DEPTH,
+  TRUTH_FACT_MAX_NODES,
+  TRUTH_FACT_MAX_TERMS,
+  truthFactExpressionError,
+  truthFactExpressionSize,
+} from '@/game/truth-fact-expression';
+import { TruthFactFields } from './mixed-shipment-fields';
+import { Button } from './ui/button';
+
+const newFact = (): TruthFact => ({ kind: 'hand', name: 'Shield' });
+
+/** Controlled structure editor. Leaf controls retain their existing validators. */
+export function TruthFactExpressionFields({ value, game, target, disabled, onChange }: {
+  value: TruthFact;
+  game: GameView;
+  target: string;
+  disabled: boolean;
+  onChange: (fact: TruthFact) => void;
+}) {
+  const size = truthFactExpressionSize(value);
+  const commit = (next: TruthFact) => {
+    if (!disabled && !truthFactExpressionError(next)) onChange(next);
+  };
+  const render = (
+    node: TruthFact,
+    path: string,
+    replace: (next: TruthFact) => TruthFact,
+    remove?: () => TruthFact,
+  ): ReactElement => {
+    const group = node.kind === 'and' || node.kind === 'or';
+    const allowed = (next: TruthFact) => !disabled && !truthFactExpressionError(replace(next));
+    const change = (next: TruthFact) => commit(replace(next));
+    const wrap = (kind: 'and' | 'or'): TruthFact => ({ kind, terms: [node, newFact()] });
+    return <fieldset key={path} data-truth-fact-path={path} className="grid min-w-0 gap-2 p-2">
+      <legend>{group ? `Group ${path} · ${node.kind.toUpperCase()}` : `Current fact ${path}`}</legend>
+      {group ? <>
+        <label>
+          Group {path} meaning
+          <select value={node.kind} disabled={disabled} onChange={event => {
+            const kind = event.target.value;
+            if (kind === 'and' || kind === 'or') change({ ...node, kind });
+          }}>
+            <option value="and">All conditions · AND</option>
+            <option value="or">At least one condition · OR</option>
+          </select>
+        </label>
+        {node.terms.map((term, index) => render(
+          term,
+          `${path}.${index + 1}`,
+          next => replace({ ...node, terms: node.terms.map((old, i) => i === index ? next : old) }),
+          () => {
+            const terms = node.terms.filter((_, i) => i !== index);
+            return replace(terms.length === 1 ? terms[0] : { ...node, terms });
+          },
+        ))}
+        <div className="flex flex-wrap gap-2">
+          <Button type="button" data-truth-fact-control={`add-${path}`}
+            disabled={!allowed({ ...node, terms: [...node.terms, newFact()] })}
+            onClick={() => change({ ...node, terms: [...node.terms, newFact()] })}>
+            Add current fact
+          </Button>
+          <Button type="button" data-truth-fact-control={`nested-${path}`}
+            disabled={!allowed({ ...node, terms: [...node.terms, { kind: 'and', terms: [newFact(), newFact()] }] })}
+            onClick={() => change({ ...node, terms: [...node.terms, { kind: 'and', terms: [newFact(), newFact()] }] })}>
+            Add nested group
+          </Button>
+        </div>
+      </> : <TruthFactFields value={node} game={game} target={target} onChange={change} />}
+      <div className="flex flex-wrap gap-2">
+        <Button type="button" data-truth-fact-control={`and-${path}`} disabled={!allowed(wrap('and'))}
+          onClick={() => change(wrap('and'))}>Group with AND</Button>
+        <Button type="button" data-truth-fact-control={`or-${path}`} disabled={!allowed(wrap('or'))}
+          onClick={() => change(wrap('or'))}>Group with OR</Button>
+        {remove && <Button type="button" data-truth-fact-control={`remove-${path}`} disabled={disabled}
+          onClick={() => commit(remove())}>Remove {group ? 'group' : 'fact'}</Button>}
+      </div>
+    </fieldset>;
+  };
+  return <fieldset disabled={disabled} data-testid="truth-fact-expression"
+    className="grid min-w-0 gap-2 [&_select]:min-w-0 [&_select]:max-w-full [&_button]:max-w-full [&_button]:min-h-11 [&_button]:h-auto [&_button]:py-2 [&_button]:whitespace-normal">
+    <legend>Current-fact expression</legend>
+    <p className="fine">
+      AND requires all conditions; OR requires at least one. The player gives one aggregate answer
+      for the whole expression. No makes the whole expression false, not necessarily every condition.
+    </p>
+    <p className="fine">
+      Current facts are evaluated when the player answers. They create no promise to keep cards,
+      spice or forces afterward.
+    </p>
+    <p className="fine">
+      App limits: {TRUTH_FACT_MAX_TERMS} terms per group, {TRUTH_FACT_MAX_NODES} total clauses
+      including groups, and {TRUTH_FACT_MAX_DEPTH} levels of grouping. These are input limits,
+      not additional printed rules.
+    </p>
+    <p className="fine">{size.nodes} / {TRUTH_FACT_MAX_NODES} total clauses · {size.depth} / {TRUTH_FACT_MAX_DEPTH} levels of grouping</p>
+    {render(value, '1', next => next)}
+  </fieldset>;
+}