package com.battery.device.simulator;
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import java.util.List;
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/** 测试和独立协议合同使用的内存状态存储。 */
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public final class InMemoryBtsSimulatorStateStore implements BtsSimulatorStateStore
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{
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private SimulatorState state;
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private List<RecentRequest> recentRequests = List.of();
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public InMemoryBtsSimulatorStateStore() { }
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public InMemoryBtsSimulatorStateStore(SimulatorState state) { this.state = state; }
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/** 返回已有状态；尚未保存过任何状态时以 defaults 初始化并复用同一实例。 */
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@Override
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public synchronized SimulatorState loadOrInitialize(SimulatorState defaults)
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{
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if (state == null) state = defaults;
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return state;
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}
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/** 保存状态引用，不做拷贝、校验或版本迁移。 */
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@Override
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public synchronized void save(SimulatorState state) { this.state = state; }
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/** 返回最近请求列表；尚未保存过时为空列表。 */
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@Override
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public synchronized List<RecentRequest> loadRecentRequests() { return recentRequests; }
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/** 保存最近请求的不可变副本，调用方后续修改原列表不影响这里。 */
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@Override
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public synchronized void saveRecentRequests(List<RecentRequest> requests) { recentRequests = List.copyOf(requests); }
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/** 用 defaults 覆盖主状态并清空最近请求。 */
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@Override
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public synchronized void reset(SimulatorState defaults)
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{
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state = defaults;
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recentRequests = List.of();
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}
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}
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