Combine current facts with native battle plans

game/mixed-battle-question.ts

@@ -0,0 +1,38 @@
+import {
+  BATTLE_CLAIM_MAX_DEPTH, BATTLE_CLAIM_MAX_NODES, BATTLE_CLAIM_MAX_TERMS,
+} from './battle-claim-expression';
+import { parsePlanClaim, PlanClaimError, type PlanClaim } from './battle-promises';
+import type { MixedActionExpression } from './mixed-action-question';
+
+export const MIXED_BATTLE_MAX_NODES = BATTLE_CLAIM_MAX_NODES;
+export const MIXED_BATTLE_MAX_TERMS = BATTLE_CLAIM_MAX_TERMS;
+export const MIXED_BATTLE_MAX_DEPTH = BATTLE_CLAIM_MAX_DEPTH;
+export const MIXED_BATTLE_MAX_LEAVES = BATTLE_CLAIM_MAX_NODES;
+
+export type MixedBattleActionClaim = Exclude<PlanClaim, { kind: 'and' | 'or' }>;
+export type MixedBattleClaim = {
+  battle: string | null;
+  territory: string;
+  mixed: MixedActionExpression<MixedBattleActionClaim>;
+};
+
+/** One native plan leaf only; mixed groups share the outer logical budget. */
+export function parseBattleActionClaim(
+  value: unknown,
+  leaders: readonly string[],
+): MixedBattleActionClaim {
+  const fail = (): never => {
+    throw new PlanClaimError('Supply one original battle-plan condition without metadata or groups.');
+  };
+  if (!value || typeof value !== 'object' || Array.isArray(value)) return fail();
+  const node = value as Record<string, unknown>;
+  const keys = node.kind === 'dial' || node.kind === 'support' ? 'compare,kind,value'
+    : node.kind === 'weapon' || node.kind === 'defense' ? 'kind,name'
+      : node.kind === 'leader' ? 'kind,leader'
+        : node.kind === 'kwisatz' ? 'kind,use' : null;
+  if (keys === null || Object.keys(node).sort().join(',') !== keys) return fail();
+  const action = parsePlanClaim(node, [...leaders]);
+  if (action.kind === 'dial' || action.kind === 'support' || action.kind === 'weapon' ||
+    action.kind === 'defense' || action.kind === 'leader' || action.kind === 'kwisatz') return action;
+  return fail();
+}