package com.battery.device.api;

import java.util.List;
import java.util.Map;
import java.util.Set;
import com.battery.device.model.AdapterCapabilities;
import com.battery.device.model.ChannelIdentity;
import com.battery.device.model.DetectedChannel;
import com.battery.device.model.HistoryAvailability;
import com.battery.device.model.HistoryPage;
import com.battery.device.model.RealtimeSnapshot;

/** 没有启用具体设备实现时使用的空适配器，不连接外部设备。 */
public final class NoopDeviceAdapter implements DeviceAdapter
{
    private final String adapterCode;

    public NoopDeviceAdapter(String adapterCode)
    {
        this.adapterCode = adapterCode == null || adapterCode.isBlank() ? "noop" : adapterCode;
    }

    @Override public String adapterCode() { return adapterCode; }

    @Override public AdapterCapabilities capabilities()
    {
        // Noop 不宣称发现或观测能力，避免业务把空结果误认为设备离线快照之外的成功事实。
        return new AdapterCapabilities(false, false, false, false);
    }

    @Override public List<DetectedChannel> discoverChannels() { return List.of(); }

    @Override public Map<ChannelIdentity, RealtimeSnapshot> inquire(Set<ChannelIdentity> channels)
    {
        return Map.of();
    }

    @Override public List<HistoryAvailability> inquireHistory(Set<ChannelIdentity> channels)
    {
        return List.of();
    }

    @Override public HistoryPage downloadHistory(ChannelIdentity channel, String btsTestId,
            long startPosition, int limit)
    {
        return new HistoryPage(channel, btsTestId, startPosition, startPosition, List.of());
    }
}