package com.battery.business.service.impl;

import java.math.BigDecimal;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.time.Clock;
import java.time.Instant;
import java.util.Date;
import java.util.HexFormat;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.lang.Nullable;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import com.alibaba.fastjson2.JSON;
import com.battery.device.api.TestDataObservationAdapter;
import com.battery.device.api.TestDataObservationAdapter.CabinetRealtime;
import com.battery.device.api.TestDataObservationAdapter.CycleRecord;
import com.battery.device.api.TestDataObservationAdapter.CollectorMeasurement;
import com.battery.device.api.TestDataObservationAdapter.CollectorRealtime;
import com.battery.device.api.TestDataObservationAdapter.SampleWatermark;
import com.battery.device.api.TestDataObservationAdapter.StepRecord;
import com.battery.device.api.model.ChannelIdentity;
import com.battery.business.domain.TTest;
import com.battery.business.domain.TTestBattery;
import com.battery.business.domain.TTestChannelBinding;
import com.battery.business.domain.TTestCycleRecord;
import com.battery.business.domain.TTestRealtimeRecord;
import com.battery.business.domain.TTestStepRecord;
import com.battery.business.mapper.TTestMapper;
import com.battery.business.service.ITTestService;
import com.battery.business.service.ITestDataReceptionService;

/** 接收期间将成功观测直接归属测试，并写入实时、工步和循环事实表。 */
@Service
public class TestDataReceptionServiceImpl implements ITestDataReceptionService
{
    private static final Logger log = LoggerFactory.getLogger(TestDataReceptionServiceImpl.class);
    private final TTestMapper mapper;
    private final ITTestService tests;
    private final TestDataObservationAdapter adapter;
    private final TestWarningExceptionService warningExceptions;
    private final Clock clock;
    private final Map<String, Instant> lastSnapshotAt = new java.util.concurrent.ConcurrentHashMap<>();
    private final Map<Long, Instant> lastRealtimeCheckAt = new java.util.concurrent.ConcurrentHashMap<>();
    /** 每个测试电池上次读取工步与循环的时刻；读取节奏对齐来源写库周期，不跟着调度节奏。 */
    private final Map<String, Instant> lastAggregateAt = new java.util.concurrent.ConcurrentHashMap<>();
    /** 每个测试电池各自的接收水位；只存在内存中，重启后按来源里的最新一行重新取水位。 */
    private final Map<String, SampleCursor> sampleCursors = new java.util.concurrent.ConcurrentHashMap<>();


    @Autowired
    public TestDataReceptionServiceImpl(TTestMapper mapper, ITTestService tests, @Nullable TestDataObservationAdapter adapter,
            TestWarningExceptionService warningExceptions)
    { this(mapper, tests, adapter, warningExceptions, Clock.systemUTC()); }

    /** 允许测试固定接收时间，生产运行仍使用 UTC 系统时钟。 */
    public TestDataReceptionServiceImpl(TTestMapper mapper, ITTestService tests, TestDataObservationAdapter adapter, Clock clock)
    { this(mapper, tests, adapter, new TestWarningExceptionService(mapper), clock); }

    public TestDataReceptionServiceImpl(TTestMapper mapper, ITTestService tests, TestDataObservationAdapter adapter)
    { this(mapper, tests, adapter, new TestWarningExceptionService(mapper), Clock.systemUTC()); }

    private TestDataReceptionServiceImpl(TTestMapper mapper, ITTestService tests, TestDataObservationAdapter adapter,
            TestWarningExceptionService warningExceptions, Clock clock)
    { this.mapper = mapper; this.tests = tests; this.adapter = adapter; this.warningExceptions = warningExceptions; this.clock = clock; }

    /**
     * 接收调度入口：对全部接收中的测试判定实时超限与来源离线异常，并按各自节奏保存成功观测。
     *
     * <p>前置条件：测试处于“检测中 + 接收中”。预警判定按约 5 秒节奏，柜端逐行接收和工步、
     * 循环汇总按来源写库节奏限流；只有成功观测且可归属本测试的数据才写入事实表，不执行历史补采。</p>
     *
     * @throws org.springframework.dao.DataAccessException 任一写入失败时整个接收事务回滚，本轮不保存任何测试的数据
     */
    @Override @Transactional(rollbackFor = Exception.class)
    public void captureReceivedData()
    {
        for (TTest test : receivingTests()) {
            Instant now = clock.instant();
            Instant previous = lastRealtimeCheckAt.get(test.getTestId());
            // STEP 1: 按约 5 秒节奏判定当前来源离线事实与实时超限，预警不受采样入库周期限制。
            // 实时预警独立于持久化槽位，并与暂停、停止和删除共享测试事务锁。
            if (previous == null || !now.isBefore(previous.plusSeconds(5))) {
                warningExceptions.recordOfflineSources(test, Date.from(now));
                for (TTestBattery battery : batteries(test)) saveRealtime(test, battery);
                lastRealtimeCheckAt.put(test.getTestId(), now);
            }
            // STEP 2: 单独按来源写库节奏读取工步与循环汇总，避免每秒重查厂商库。
            for (TTestBattery battery : batteries(test)) saveDeviceAggregates(test, battery);
        }
    }

    private List<TTest> receivingTests()
    {
        List<Long> ids = mapper.selectReceivingTestIds(); if (ids == null) return List.of();
        return ids.stream().map(id -> {
            TTest locked = mapper.selectTestByIdForUpdate(id);
            if (locked == null || !"RUNNING".equals(locked.getTestStatus()) || !"RECEIVING".equals(locked.getReceptionStatus())) return null;
            TTest current = tests.selectTestById(id);
            return current != null && "RUNNING".equals(current.getTestStatus()) && "RECEIVING".equals(current.getReceptionStatus()) ? current : null;
        }).filter(java.util.Objects::nonNull).toList();
    }
    private List<TTestBattery> batteries(TTest test) { return test.getBatteries() == null ? List.of() : test.getBatteries(); }

    /**
     * 保存单个测试电池的一次实时观测：来源支持设备数据行时逐行落库，否则回落到轮询槽位。
     *
     * <p>前置条件：测试正在接收且绑定通道完整。柜端与采集器分别判断成功，失败来源的字段保持为空。</p>
     *
     * @param test   接收中的测试
     * @param battery 测试内的一个电池号及其通道绑定
     */
    private void saveRealtime(TTest test, TTestBattery battery)
    {
        if (adapter == null) return;
        TTestChannelBinding binding = battery.getBinding(); if (binding == null || binding.getDevid() == null || binding.getChlid() == null) return;
        // STEP 1: 优先按来源水位逐行接收柜端事实（同秒多行都保留），槽位只留给采集器端。
        boolean rowBased = persistCabinetSamples(test, battery, binding);
        // STEP 2: 来源不按设备数据行接收时，落到轮询槽位，保持原来的组合观测语义。
        saveRealtimeSlot(test, battery, binding, !rowBased);
    }

    /**
     * 按来源水位逐行接收柜端事实。水位是"开始接收"或"继续接收"这一刻来源里的最新一行，
     * 因此水位之前的数据行即使仍在来源里也不进本测试，暂停期间的空档也不会被补回来。
     *
     * <p>前置条件：调用方持有该测试电池的接收游标。读取节奏按来源写库周期限流；
     * 实例缺失、来源不可达或读取失败时明确失败并留痕，不回退到其他实例。</p>
     *
     * @param test    接收中的测试
     * @param battery 测试内的一个电池号
     * @param binding 该电池号绑定的检测柜通道
     * @return 该来源是否按设备数据行接收；来源不支持或被拒绝时返回 false，调用方回落到轮询槽位
     */
    private boolean persistCabinetSamples(TTest test, TTestBattery battery, TTestChannelBinding binding)
    {
        String key = test.getTestId() + ":" + battery.getTestBatteryId();
        Instant boundary = test.getReceptionBoundaryAtUtc() == null ? null : test.getReceptionBoundaryAtUtc().toInstant();
        SampleCursor cursor = sampleCursors.computeIfAbsent(key, ignored -> new SampleCursor());
        synchronized (cursor)
        {
            // STEP 1: 开始接收与继续接收都会推进接收边界，边界变化即重新取水位，暂停期间的数据不补采。
            if (!java.util.Objects.equals(cursor.boundary, boundary))
            {
                cursor.boundary = boundary; cursor.watermark = null; cursor.rowBased = null; cursor.sampledAt = null;
            }
            if (Boolean.FALSE.equals(cursor.rowBased)) return false;
            ChannelIdentity channel = channelIdentity(binding);
            Instant now = clock.instant();
            long interval = persistenceInterval(binding);
            // 厂商写库节奏是 60 秒，取数不必更快；展示节奏由控制台轮询单独承担。
            if (cursor.sampledAt != null && now.isBefore(cursor.sampledAt.plusMillis(interval)))
                return Boolean.TRUE.equals(cursor.rowBased);
            try
            {
                // STEP 2: 首次接触该边界时只记录水位，不把水位之前的历史行带入本测试。
                if (cursor.watermark == null)
                {
                    cursor.sampledAt = now;
                    SampleWatermark watermark = adapter.currentWatermark(channel);
                    if (watermark == null)
                    {
                        // 来源不按设备数据行接收（例如开发模拟器）：柜端事实继续走轮询槽位。
                        cursor.rowBased = false;
                        return false;
                    }
                    cursor.watermark = watermark;
                    cursor.rowBased = true;
                    return true;
                }
                // STEP 3: 逐行写入水位之后的设备事实，每行成功后推进水位。
                List<CabinetRealtime> rows = adapter.samplesSince(channel, cursor.watermark);
                cursor.sampledAt = now;
                for (CabinetRealtime row : rows)
                {
                    insertCabinetSample(test, battery, binding, row);
                    cursor.watermark = new SampleWatermark(row.deviceTime(), row.sequenceId());
                }
                return true;
            }
            catch (RuntimeException exception)
            {
                // 实例缺失、来源不可达或读取失败：明确失败并留痕，下一轮重试；不回退到其他实例。
                log.warn("柜端逐行接收失败 testId={}, bindingId={}, adapterCode={}", test.getTestId(),
                        binding.getBindingId(), binding.getAdapterCode(), exception);
                cursor.sampledAt = now;
                return Boolean.TRUE.equals(cursor.rowBased);
            }
        }
    }

    /**
     * 把一行设备事实写成一条实时记录；来源行身份保证重复接收幂等、同身份不同内容报冲突。
     * 归属边界由水位在设备时间里判定（见 {@link #persistCabinetSamples}），
     * 这里不用服务器取数时间反推设备时间。
     *
     * @param test    接收中的测试
     * @param battery 测试内的一个电池号
     * @param binding 该电池号绑定的检测柜通道
     * @param row     来源返回的一行柜端事实；设备时间或服务器接收时间缺失时丢弃不写
     */
    private void insertCabinetSample(TTest test, TTestBattery battery, TTestChannelBinding binding, CabinetRealtime row)
    {
        if (row.deviceTime() == null || row.serverReceivedAt() == null) return;
        // STEP 1: 先用本次成功观测判定实时超限，异常不依赖采样入库周期。
        Date observedAt = Date.from(row.serverReceivedAt());
        evaluateCabinet(test, binding, "VOLTAGE", BigDecimal.valueOf(row.voltageV()), "V", observedAt);
        evaluateCabinet(test, binding, "CURRENT", BigDecimal.valueOf(row.currentA()), "A", observedAt);
        evaluateCabinet(test, binding, "CAPACITY", BigDecimal.valueOf(row.capacityAh()), "Ah", observedAt);
        evaluateCabinet(test, binding, "ENERGY", BigDecimal.valueOf(row.energyWh()), "Wh", observedAt);
        // STEP 2: 按来源身份组装记录，槽位留空以允许同秒多行各自成立。
        String identity = sourceIdentity(binding);
        String recordId = row.sourceRecordId() == null || row.sourceRecordId().isBlank()
                ? "cabinet:" + row.sequenceId() : row.sourceRecordId();
        TTestRealtimeRecord value = new TTestRealtimeRecord();
        value.setTestId(test.getTestId()); value.setTestBatteryId(battery.getTestBatteryId());
        value.setBindingId(binding.getBindingId()); value.setAdapterCode(binding.getAdapterCode());
        // 设备数据行不是系统轮询槽位，槽位留空：同秒多行因此可以各自成立（ADR-0051 的槽位可空机制）。
        value.setCaptureSlotUtc(null); value.setServerReceivedAtUtc(observedAt);
        value.setCabinetDevtype(binding.getDevtype()); value.setCabinetDevid(binding.getDevid());
        value.setCabinetSubdevid(binding.getSubdevid()); value.setCabinetChlid(binding.getChlid());
        value.setCabinetAdapterTimezoneId(row.timezoneId());
        value.setCabinetSequenceId(row.sequenceId());
        value.setCabinetDeviceTimeUtc(Date.from(row.deviceTime()));
        value.setCabinetDeviceTimeRaw(row.deviceTimeRaw());
        value.setCycleNo(row.cycleNo()); value.setStepNo(row.stepNo()); value.setStepType(row.stepType());
        value.setStepName(row.stepName());
        value.setVoltageV(BigDecimal.valueOf(row.voltageV())); value.setCurrentA(BigDecimal.valueOf(row.currentA()));
        value.setCapacityAh(BigDecimal.valueOf(row.capacityAh())); value.setEnergyWh(BigDecimal.valueOf(row.energyWh()));
        Map<String, Object> extension = new LinkedHashMap<>();
        if (row.relativeTimeSeconds() != null) extension.put("relativeTimeSeconds", row.relativeTimeSeconds());
        value.setExtensionMeasurementsJson(JSON.toJSONString(extension));
        value.setSourceIdentity(identity); value.setSourceRecordId(recordId);
        value.setContentSha256(hash(value));
        // STEP 3: 按来源行身份幂等；同内容重复接收忽略，同身份但内容不同时保留原事实并告警，不覆盖。
        String existing = mapper.selectRealtimeRecordHashBySourceRecord(battery.getTestBatteryId(), identity, recordId);
        if (existing != null)
        {
            if (!existing.equalsIgnoreCase(HexFormat.of().formatHex(value.getContentSha256())))
                log.warn("实时记录内容冲突，拒绝覆盖 testId={}, testBatteryId={}, sourceRecordId={}",
                        test.getTestId(), battery.getTestBatteryId(), recordId);
            return;
        }
        mapper.insertRealtimeRecord(value);
    }

    /**
     * 向轮询槽位写入一条实时采样记录，柜端与采集器端的成功观测在同一行合并保存。
     *
     * <p>前置条件：调用方已判定该来源不按设备数据行接收。槽位按持久化周期对齐，同一槽位只写一行；
     * 柜端和采集器端分别判断成功，失败来源的身份、时间和指标保持为空。</p>
     *
     * @param test          接收中的测试
     * @param battery       测试内的一个电池号
     * @param binding       该电池号绑定的检测柜通道
     * @param includeCabinet 本次是否把柜端事实合并进该槽位
     */
    private void saveRealtimeSlot(TTest test, TTestBattery battery, TTestChannelBinding binding, boolean includeCabinet)
    {
        // STEP 1: 柜端和采集器端分别判断成功，各取最近一次成功观测；同一槽位只写一行，失败来源的身份、时间和指标保持为空。
        Instant now = clock.instant(); long interval = persistenceInterval(binding); String key = test.getTestId() + ":" + battery.getTestBatteryId();
        CabinetRealtime cabinet = includeCabinet ? latestCabinet(binding) : null;
        if (cabinet != null && !accepted(test, cabinet.deviceTime(), cabinet.serverReceivedAt())) cabinet = null;
        CollectorRealtime collector = latestCollector(battery);
        Map<String, CollectorMeasurement> mapped = mappedCollectorMetrics(test, battery, collector);
        if (cabinet == null && (collector == null || !collector.online() || mapped.isEmpty())) return;
        // STEP 2: 槽位尚未到期或历史行被删除都不能阻断实时告警，当前成功测量先判定预警。
        if (cabinet != null) {
            Date observedAt = Date.from(cabinet.serverReceivedAt());
            evaluateCabinet(test, binding, "VOLTAGE", BigDecimal.valueOf(cabinet.voltageV()), "V", observedAt);
            evaluateCabinet(test, binding, "CURRENT", BigDecimal.valueOf(cabinet.currentA()), "A", observedAt);
            evaluateCabinet(test, binding, "CAPACITY", BigDecimal.valueOf(cabinet.capacityAh()), "Ah", observedAt);
            evaluateCabinet(test, binding, "ENERGY", BigDecimal.valueOf(cabinet.energyWh()), "Wh", observedAt);
        }
        for (CollectorMeasurement measurement : mapped.values().stream().distinct().toList()) {
            warningExceptions.evaluate(test, "COLLECTOR", battery.getCollectorId() + ":" + measurement.channelCode(),
                    measurement.metricCode(), measurement.value(), measurement.unit(), Date.from(measurement.serverReceivedAt()));
        }
        // STEP 3: 按持久化周期限流并对齐槽位；删除修订随数据库保留，重启后同一槽位也不能重新出现。
        Instant previous = lastSnapshotAt.get(key); if (previous != null && now.isBefore(previous.plusMillis(interval))) return;
        Instant collectorTime = mapped.values().stream().map(CollectorMeasurement::deviceTime).max(Instant::compareTo).orElse(null);
        Instant slot = Instant.ofEpochMilli((now.toEpochMilli() / interval) * interval);
        if (mapper.wasRealtimeSlotDeleted(test.getTestId(), battery.getTestBatteryId(), slot.toEpochMilli())) return;
        // STEP 4: 组装组合观测行，只写成功来源的字段。
        TTestRealtimeRecord row = new TTestRealtimeRecord(); row.setTestId(test.getTestId()); row.setTestBatteryId(battery.getTestBatteryId()); row.setBindingId(binding.getBindingId());
        row.setAdapterCode(binding.getAdapterCode()); row.setCaptureSlotUtc(Date.from(slot)); row.setServerReceivedAtUtc(Date.from(now));
        if (cabinet != null) { row.setCabinetDevtype(binding.getDevtype()); row.setCabinetDevid(binding.getDevid()); row.setCabinetSubdevid(binding.getSubdevid()); row.setCabinetChlid(binding.getChlid()); row.setCabinetAdapterTimezoneId(cabinet.timezoneId()); }
        if (collector != null && collector.online() && !mapped.isEmpty()) { row.setCollectorId(battery.getCollectorId()); row.setCollectorAdapterTimezoneId(collector.timezoneId()); }
        row.setCabinetSequenceId(cabinet == null ? null : cabinet.sequenceId()); row.setCabinetDeviceTimeUtc(cabinet == null ? null : Date.from(cabinet.deviceTime())); row.setCabinetDeviceTimeRaw(cabinet == null ? null : cabinet.deviceTimeRaw());
        row.setCollectorSequenceId(mapped.values().stream().map(CollectorMeasurement::sequenceId).max(Long::compareTo).orElse(null)); row.setCollectorDeviceTimeUtc(collectorTime == null ? null : Date.from(collectorTime)); row.setCollectorDeviceTimeRaw(mapped.values().stream().filter(value -> value.deviceTime().equals(collectorTime)).map(CollectorMeasurement::deviceTimeRaw).findFirst().orElse(null));
        if (cabinet != null) { row.setCycleNo(cabinet.cycleNo()); row.setStepNo(cabinet.stepNo()); row.setStepType(cabinet.stepType()); row.setStepName(cabinet.stepName()); row.setVoltageV(BigDecimal.valueOf(cabinet.voltageV())); row.setCurrentA(BigDecimal.valueOf(cabinet.currentA())); row.setCapacityAh(BigDecimal.valueOf(cabinet.capacityAh())); row.setEnergyWh(BigDecimal.valueOf(cabinet.energyWh())); }
        row.setTemperature(metricValue(mapped, "TEMPERATURE")); row.setPositivePotential(metricValue(mapped, "POSITIVE_POTENTIAL")); row.setNegativePotential(metricValue(mapped, "NEGATIVE_POTENTIAL")); row.setCollectorChannelCode(mapped.values().stream().map(CollectorMeasurement::channelCode).findFirst().orElse(null));
        Map<String, Object> extension = new LinkedHashMap<>();
        // 工步内相对时长由成功柜端观测提供，不以轮询槽位或服务器时间推算。
        if (cabinet != null && cabinet.relativeTimeSeconds() != null) extension.put("relativeTimeSeconds", cabinet.relativeTimeSeconds());
        for (Map.Entry<String, CollectorMeasurement> e : mapped.entrySet()) if (!isFixedMetric(e.getKey()))
        {
            Map<String, Object> value = new LinkedHashMap<>(); value.put("value", e.getValue().value()); value.put("unit", e.getValue().unit()); value.put("channelCode", e.getValue().channelCode()); extension.put(e.getKey(), value);
        }
        row.setExtensionMeasurementsJson(JSON.toJSONString(extension)); row.setSourceIdentity(sourceIdentity(binding));
        row.setSourceRecordId(sourceRecordId(cabinet, mapped));
        row.setContentSha256(hash(row));
        // STEP 5: 同一槽位内容不相同报冲突并保留原事实；插入被忽略时再核对一次并发写入。
        String old = mapper.selectRealtimeRecordContentHash(test.getTestId(), battery.getTestBatteryId(), row.getCaptureSlotUtc());
        if (old != null) { if (!old.equalsIgnoreCase(HexFormat.of().formatHex(row.getContentSha256()))) log.warn("实时采样内容冲突，拒绝覆盖 testId={}, testBatteryId={}, captureSlotUtc={}", test.getTestId(), battery.getTestBatteryId(), slot); return; }
        int inserted = mapper.insertRealtimeRecord(row);
        if (inserted == 0)
        {
            String actual = mapper.selectRealtimeRecordContentHash(test.getTestId(), battery.getTestBatteryId(), row.getCaptureSlotUtc());
            if (actual != null && !actual.equalsIgnoreCase(HexFormat.of().formatHex(row.getContentSha256())))
                log.warn("实时采样并发内容冲突，拒绝覆盖 testId={}, testBatteryId={}, captureSlotUtc={}", test.getTestId(), battery.getTestBatteryId(), slot);
        }
        lastSnapshotAt.put(key, now);
    }

    private void evaluateCabinet(TTest test, TTestChannelBinding binding, String metricCode, BigDecimal value, String unit, Date occurredAt)
    {
        if (value != null) warningExceptions.evaluate(test, "CABINET", sourceIdentity(binding), metricCode, value, unit, occurredAt);
    }

    /**
     * 保存单个测试电池的工步与循环汇总事实，来源编号或明确的时间组合保证重复观测幂等。
     *
     * <p>前置条件：测试正在接收且绑定通道完整。只接受来源返回的统计记录，不从实时采样推算；
     * 已按授权物理删除的汇总不会因为重复观测被写回。</p>
     *
     * @param test    接收中的测试
     * @param battery 测试内的一个电池号及其通道绑定
     */
    private void saveDeviceAggregates(TTest test, TTestBattery battery)
    {
        // STEP 1: 按来源写库节奏限流，避免接收调度每秒重查厂商库。
        // 工步、循环只接受来源返回的统计记录，并以来源编号或明确的时间组合执行幂等。
        if (adapter == null) return; TTestChannelBinding binding = battery.getBinding(); if (binding == null || binding.getDevid() == null || binding.getChlid() == null) return;
        String key = test.getTestId() + ":" + battery.getTestBatteryId();
        // 接收调度每秒跑一次，而来源按自己的写库节奏产出工步：不按来源节奏限流会每秒重查厂商库。
        // 汇总用来源声明的汇总间隔：它可能比实时行的间隔长（推式来源的落地表在本地）。
        Instant now = clock.instant(); Instant previous = lastAggregateAt.get(key);
        if (previous != null && now.isBefore(previous.plusMillis(aggregateInterval(binding)))) return;
        lastAggregateAt.put(key, now);
        // STEP 2: 读取来源的工步与循环汇总；来源不可达时本轮放弃，下一轮重试。
        ChannelIdentity channel = new ChannelIdentity(binding.getAdapterCode(), binding.getDevtype(), binding.getDevid(), binding.getSubdevid(), binding.getChlid());
        List<StepRecord> steps; List<CycleRecord> cycles; try { steps = adapter.stepRecords(channel); cycles = adapter.cycleRecords(channel); } catch (RuntimeException ex) { return; }
        String identity = sourceIdentity(binding);
        // STEP 3: 逐条写入可归属的实际工步，已删除的来源行跳过，内容不一致时保留原事实。
        for (StepRecord source : steps == null ? List.<StepRecord>of() : steps)
        {
            if (!accepted(test, source.endedAt(), source.serverReceivedAt())) continue;
            TTestStepRecord row = new TTestStepRecord(); row.setTestId(test.getTestId()); row.setTestBatteryId(battery.getTestBatteryId()); row.setBindingId(binding.getBindingId()); row.setAdapterCode(binding.getAdapterCode()); row.setSourceIdentity(identity); row.setSourceRecordId(blankToNull(source.sourceRecordId())); row.setAdapterTimezoneId(source.timezoneId()); row.setCycleNo(source.cycleNo()); row.setStepNo(source.stepNo()); row.setStepType(source.stepType()); row.setStepName(source.stepName()); row.setDeviceTimeUtc(Date.from(source.endedAt())); row.setDeviceTimeRaw(source.deviceTimeRaw()); row.setServerReceivedAtUtc(Date.from(source.serverReceivedAt())); row.setVoltageV(BigDecimal.valueOf(source.endVoltageV())); row.setCurrentA(BigDecimal.valueOf(source.endCurrentA())); row.setCapacityAh(decimal(source.capacityAh())); row.setEnergyWh(decimal(source.energyWh())); row.setDedupeKey(row.getSourceRecordId() == null ? "fallback:" + source.endedAt() + ":" + source.cycleNo() + ":" + source.stepNo() : "record:" + row.getSourceRecordId()); row.setContentSha256(hash(row));
            // 物理删除依靠已有修订追溯识别来源，重复观测不能把已删除汇总重新写回。
            row.setExtensionMeasurementsJson(JSON.toJSONString(source.measurements()));
            row.setContentSha256(hash(row));
            if (mapper.wasAggregateDeleted(test.getTestId(), "STEP", battery.getTestBatteryId(), identity, row.getDedupeKey())) continue;
            if (mapper.insertStepRecord(row) == 0)
            {
                String actual = mapper.selectStepRecordContentHash(row.getTestBatteryId(), row.getSourceIdentity(), row.getDedupeKey());
                if (actual != null && !actual.equalsIgnoreCase(HexFormat.of().formatHex(row.getContentSha256())))
                    log.warn("工步记录内容冲突，拒绝覆盖 testId={}, dedupeKey={}", test.getTestId(), row.getDedupeKey());
            }
        }
        // STEP 4: 逐条写入可归属的循环汇总，来源类别随记录保存以便区分推导值与设备事实。
        for (CycleRecord source : cycles == null ? List.<CycleRecord>of() : cycles)
        {
            if (!accepted(test, source.endedAt(), source.serverReceivedAt())) continue;
            TTestCycleRecord row = new TTestCycleRecord(); row.setTestId(test.getTestId()); row.setTestBatteryId(battery.getTestBatteryId()); row.setBindingId(binding.getBindingId()); row.setAdapterCode(binding.getAdapterCode()); row.setSourceIdentity(identity); row.setAdapterTimezoneId(source.timezoneId()); row.setSourceRecordId(blankToNull(source.sourceRecordId())); row.setSourceKind(source.sourceKind()); row.setCycleNo(source.cycleNo()); row.setDeviceTimeUtc(Date.from(source.endedAt())); row.setDeviceTimeRaw(source.deviceTimeRaw()); row.setServerReceivedAtUtc(Date.from(source.serverReceivedAt())); row.setChargeCapacityAh(BigDecimal.valueOf(source.chargeCapacityAh())); row.setDischargeCapacityAh(BigDecimal.valueOf(source.dischargeCapacityAh())); row.setChargeEnergyWh(BigDecimal.valueOf(source.chargeEnergyWh())); row.setDischargeEnergyWh(BigDecimal.valueOf(source.dischargeEnergyWh())); row.setEfficiency(decimal(source.efficiency())); row.setDedupeKey(row.getSourceRecordId() == null ? "fallback:" + source.endedAt() + ":" + source.cycleNo() : "record:" + row.getSourceRecordId()); row.setContentSha256(hash(row));
            if (mapper.wasAggregateDeleted(test.getTestId(), "CYCLE", battery.getTestBatteryId(), identity, row.getDedupeKey())) continue;
            if (mapper.insertCycleRecord(row) == 0)
            {
                String actual = mapper.selectCycleRecordContentHash(row.getTestBatteryId(), row.getSourceIdentity(), row.getDedupeKey());
                if (actual != null && !actual.equalsIgnoreCase(HexFormat.of().formatHex(row.getContentSha256())))
                    log.warn("循环记录内容冲突，拒绝覆盖 testId={}, dedupeKey={}", test.getTestId(), row.getDedupeKey());
            }
        }
    }

    private CabinetRealtime latestCabinet(TTestChannelBinding b) { try { return adapter.latestCabinet(channelIdentity(b)); } catch (RuntimeException ex) { return null; } }
    private static ChannelIdentity channelIdentity(TTestChannelBinding b) { return new ChannelIdentity(b.getAdapterCode(), b.getDevtype(), b.getDevid(), b.getSubdevid(), b.getChlid()); }
    private CollectorRealtime latestCollector(TTestBattery b) { if (b.getCollectorId() == null || b.getBinding() == null) return null; try { return adapter.latestCollector(b.getBinding().getAdapterCode(), mapper.selectCollectorCode(b.getCollectorId())); } catch (RuntimeException ex) { return null; } }
    private Map<String, CollectorMeasurement> mappedCollectorMetrics(TTest test, TTestBattery battery, CollectorRealtime source)
    {
        Map<String, CollectorMeasurement> result = new LinkedHashMap<>();
        if (source == null || !source.online() || battery.getCollectorChannels() == null) return result;
        for (var binding : battery.getCollectorChannels()) for (var measurement : source.measurements()) {
            if (accepted(test, measurement.deviceTime(), measurement.serverReceivedAt())
                    && java.util.Objects.equals(binding.getChannelCode(), measurement.channelCode())
                    && TestWarningExceptionService.matchesCollectorMetric(binding.getMeasurementCode(), measurement.metricCode())) {
                // 绑定角色区分主、辅助测量；不能用设备通用指标名覆盖其他物理通道。
                result.put(binding.getMeasurementCode().toUpperCase(Locale.ROOT), measurement);
            }
        }
        return result;
    }
    private static boolean isFixedMetric(String code) { return List.of("TEMPERATURE", "POSITIVE_POTENTIAL", "NEGATIVE_POTENTIAL", "PRIMARY_TEMPERATURE", "PRIMARY_POSITIVE_POTENTIAL", "PRIMARY_NEGATIVE_POTENTIAL").contains(code); }
    private static BigDecimal metricValue(Map<String, CollectorMeasurement> values, String code) {
        var measurement = values.get("PRIMARY_" + code);
        if (measurement == null) measurement = values.get(code);
        return measurement == null ? null : measurement.value();
    }
    private static String sourceRecordId(CabinetRealtime cabinet, Map<String, CollectorMeasurement> measurements)
    {
        List<String> parts = new java.util.ArrayList<>();
        if (cabinet != null) parts.add("cabinet:" + cabinet.sequenceId());
        measurements.values().stream().map(CollectorMeasurement::sequenceId).max(Long::compareTo)
                .ifPresent(sequence -> parts.add("collector:" + sequence));
        return String.join(":", parts);
    }
    private long persistenceInterval(TTestChannelBinding b) { try { return Math.max(100L, adapter.persistenceIntervalMillis(channelIdentity(b))); } catch (RuntimeException ex) { return 60000L; } }
    private long aggregateInterval(TTestChannelBinding b) { try { return Math.max(100L, adapter.aggregateIntervalMillis(channelIdentity(b))); } catch (RuntimeException ex) { return 60000L; } }
    private static String sourceIdentity(TTestChannelBinding b) { return String.join(":", String.valueOf(b.getAdapterCode()), String.valueOf(b.getDevtype()), String.valueOf(b.getDevid()), String.valueOf(b.getSubdevid()), String.valueOf(b.getChlid())); }
    private static String timezone(TTestChannelBinding b) { return b.getAdapterTimezoneId() == null || b.getAdapterTimezoneId().isBlank() ? "Asia/Hong_Kong" : b.getAdapterTimezoneId(); }
    private static String blankToNull(String value) { return value == null || value.isBlank() ? null : value; }
    /** 设备未提供的单项值保持为空：零是设备事实，缺失不能写成零。 */
    private static BigDecimal decimal(Double value) { return value == null ? null : BigDecimal.valueOf(value); }
    // 实时提醒与持久化共用归属边界，避免同一旧观测只在首页触发异常。
    static boolean accepted(TTest test, Instant deviceTime, Instant serverReceivedAt)
    {
        if (deviceTime != null && test.getStartedAtUtc() != null && deviceTime.isBefore(test.getStartedAtUtc().toInstant())) return false;
        return serverReceivedAt != null && (test.getReceptionBoundaryAtUtc() == null || !serverReceivedAt.isBefore(test.getReceptionBoundaryAtUtc().toInstant()));
    }

    private byte[] hash(Object value)
    {
        // 重复观测比较设备内容，不把服务器轮询时间作为内容变化。
        Map<String, Object> content = new java.util.TreeMap<>(JSON.parseObject(JSON.toJSONString(value)));
        content.remove("serverReceivedAtUtc");
        try { return MessageDigest.getInstance("SHA-256").digest(JSON.toJSONBytes(content)); }
        catch (Exception ex) { throw new IllegalStateException("无法计算测试数据内容摘要", ex); }
    }

    /** 单个测试电池的逐行接收状态：接收边界、来源水位、是否按行接收与上次取数时间。 */
    private static final class SampleCursor
    {
        private Instant boundary;
        private SampleWatermark watermark;
        private Boolean rowBased;
        private Instant sampledAt;
    }
}