import {
	type CombatantId,
	type DomainError,
	type DomainEvent,
	editCombatant,
	isDomainError,
} from "@initiative/domain";
import type { EncounterStore } from "./ports.js";

export function editCombatantUseCase(
	store: EncounterStore,
	id: CombatantId,
	newName: string,
): DomainEvent[] | DomainError {
	const encounter = store.get();
	const result = editCombatant(encounter, id, newName);

	if (isDomainError(result)) {
		return result;
	}

	store.save(result.encounter);
	return result.events;
}