// =====================================================
// CLOUD DEBT
// =====================================================
const batteryNetPowerW = parsed.batteryCurrentA * derived.batteryVoltageRef;
let cloudDebtNextKwh = params.cloudDebtPrevKwh;

if (sessionObservedActive) {
  if (batteryNetPowerW < 0 && !isGridSource) {
    cloudDebtNextKwh += (Math.abs(batteryNetPowerW) * cfg.sampleSeconds) / 3600000;
  } else if (batteryNetPowerW > 0) {
    cloudDebtNextKwh -= (batteryNetPowerW * cfg.sampleSeconds) / 3600000;
  }
} else if (batteryNetPowerW > 0) {
  cloudDebtNextKwh -= (batteryNetPowerW * cfg.sampleSeconds) / 3600000;
}

cloudDebtNextKwh = clamp(cloudDebtNextKwh, 0, params.cloudDebtMaxKwh * 4);

const cloudDebtMeaningful =
  cloudDebtNextKwh > cfg.cloudDebtMeaningfulThresholdKwh;

const cloudEventDischargingNow =
  sessionObservedActive &&
  !isGridSource &&
  parsed.batteryCurrentA < -Math.max(1, params.batteryNeutralBandA) &&
  cloudDebtMeaningful;

const continuingCloudEvent =
  cloudEventDischargingNow &&
  history.cloudDebtStartedMsPrev !== null &&
  params.cloudDebtPrevKwh > cfg.cloudDebtRecoveryThresholdKwh;

const enteringCloudDebt =
  cloudEventDischargingNow && !continuingCloudEvent;

const cloudDebtActive = cloudEventDischargingNow;

const cloudDebtStartedMs =
  cloudEventDischargingNow
    ? (continuingCloudEvent ? history.cloudDebtStartedMsPrev : nowMs)
    : null;

const cloudDebtDurationMinutes =
  cloudDebtActive && cloudDebtStartedMs !== null
    ? Math.max(0, (nowMs - cloudDebtStartedMs) / 60000)
    : 0;

const effectiveCloudToleranceMinutes =
  params.cloudToleranceMinutes +
  (solarPotentialContext ? batteryTune.global.solarPotentialGraceMinutes : 0) +
  (houseSpikeDetected ? batteryTune.global.houseSpikeGraceMinutes : 0);

const cloudToleranceOk =
  cloudDebtNextKwh <= params.cloudDebtMaxKwh &&
  (
    !cloudDebtActive ||
    cloudDebtDurationMinutes <= effectiveCloudToleranceMinutes
  );

// =====================================================
// LEGACY / FORECAST MODES
// =====================================================
const batteryFullHarvestMode =
  parsed.forecastModeEnabled &&
  context.profile !== 'night_hc' &&
  context.profile !== 'outside_window' &&
  parsed.soc >= params.batteryFullSoc &&
  parsed.todayRemainingKwh >= params.batteryFullForecastMinKwh &&
  derived.projectedEndSocAfterCharge >= (derived.endDayGuardSoc - 2);

const forecastCommitMode =
  parsed.forecastModeEnabled &&
  context.profile !== 'night_hc' &&
  context.profile !== 'outside_window' &&
  parsed.soc >= params.forecastCommitSocFloor &&
  parsed.todayRemainingKwh >= params.forecastCommitMinKwh &&
  derived.projectedEndSocAfterCharge >= derived.endDayGuardSoc;

const batteryPriorityMode =
  !batteryFullHarvestMode && !forecastCommitMode;

// =====================================================
// EVCS NIGHT ENGINE
// =====================================================
const nightSessionActive =
  context.profile === 'night_hc' &&
  parsed.evcsVehicleConnected;

const nightSessionStartSocPct =
  nightSessionActive
    ? (
        Number.isFinite(history.nightSessionStartSocPct)
          ? history.nightSessionStartSocPct
          : parsed.soc
      )
    : null;

const nightSessionStartAt =
  nightSessionActive
    ? (history.nightSessionStartAt || '')
    : '';

const nightSessionStartMs =
  nightSessionActive
    ? (history.nightSessionStartMs ?? null)
    : null;

const nightSessionNeedsCapture =
  nightSessionActive &&
  (
    !Number.isFinite(history.nightSessionStartSocPct) ||
    !nightSessionStartAt ||
    nightSessionStartMs === null
  );

const nightSessionNeedsClear =
  !nightSessionActive &&
  (
    Number.isFinite(history.nightSessionStartSocPct) ||
    !!history.nightSessionStartAt
  );

const batteryHardFloorPct =
  params.evcsNightBatteryHardFloorPct;

const batteryMorningTargetPct =
  parsed.todayRemainingKwh >= params.evcsNightStrongForecastKwh
    ? params.evcsNightTargetStrongForecastPct
    : parsed.todayRemainingKwh >= params.evcsNightMediumForecastKwh
      ? params.evcsNightTargetMediumForecastPct
      : params.evcsNightTargetWeakForecastPct;

const maxBatteryDischargePoints =
  nightSessionActive && Number.isFinite(nightSessionStartSocPct)
    ? Math.max(0, nightSessionStartSocPct - batteryMorningTargetPct)
    : 0;

const gridTakeoverTriggerPct =
  Math.max(batteryHardFloorPct, batteryMorningTargetPct);

const batteryKwhMissingToTarget =
  nightSessionActive
    ? Math.max(
        0,
        ((batteryMorningTargetPct - parsed.soc) / 100) * cfg.batteryUsableCapacityKwh
      )
    : 0;

const batteryRecoveryMinutesNeeded =
  nightSessionActive && params.evcsNightBatteryRecoveryPowerKw > 0
    ? (batteryKwhMissingToTarget / params.evcsNightBatteryRecoveryPowerKw) * 60
    : 0;

const batteryRecoveryUrgent =
  nightSessionActive &&
  Number.isFinite(lifecycle.minutesUntilDeparture) &&
  lifecycle.minutesUntilDeparture >= 0 &&
  (
    batteryRecoveryMinutesNeeded + params.evcsNightDepartureSafetyMin
      >= lifecycle.minutesUntilDeparture
  );

const batteryBelowHardFloor =
  parsed.soc <= batteryHardFloorPct;

const batteryBelowMorningTarget =
  parsed.soc < batteryMorningTargetPct;

const batteryAtOrBelowGridTakeoverTrigger =
  parsed.soc <= gridTakeoverTriggerPct;

const batteryAssistAllowed =
  nightSessionActive &&
  !batteryBelowHardFloor &&
  !batteryRecoveryUrgent &&
  parsed.soc > gridTakeoverTriggerPct;

const nightGridTakeoverNeeded =
  nightSessionActive &&
  (
    batteryBelowHardFloor ||
    batteryAtOrBelowGridTakeoverTrigger ||
    batteryRecoveryUrgent
  );

const nightPreferredSourceMode =
  !nightSessionActive
    ? 'blocked'
    : batteryAssistAllowed
      ? 'battery_assist_night'
      : (
          batteryBelowHardFloor ||
          batteryBelowMorningTarget ||
          batteryRecoveryUrgent
        )
        ? 'grid_forced'
        : 'grid_hc_allowed';

const batteryRecoveryAllowedNow =
  nightSessionActive &&
  nightGridTakeoverNeeded &&
  (
    batteryBelowMorningTarget ||
    batteryRecoveryUrgent
  );

const batteryTargetReached =
  nightSessionActive &&
  parsed.soc >= batteryMorningTargetPct;

// =====================================================
// PROFILE-BASED THRESHOLDS
// =====================================================
const profileSocStartFloor =
  context.profile === 'morning_solar' ? params.morningSocMin :
  context.profile === 'midday_hc_or_solar' ? params.middaySocMin :
  context.profile === 'evening_high_soc' ? params.eveningSocStartMin :
  params.socStartMin;

const profileSocHoldFloor =
  context.profile === 'morning_solar' ? Math.max(params.socStopMin, params.morningSocMin - 10) :
  context.profile === 'midday_hc_or_solar' ? Math.max(params.socStopMin, params.middaySocMin - 15) :
  context.profile === 'evening_high_soc' ? params.eveningSocStopMin :
  params.socStopMin;

const profileSpecificDischargeFloorA =
  context.profile === 'morning_solar' ? params.morningBatteryMaxDischargeA :
  context.profile === 'midday_hc_or_solar' ? params.middayBatteryMaxDischargeA :
  context.profile === 'evening_high_soc' ? params.eveningBatteryMaxDischargeA :
  params.batteryDischargeSoftA;

const profileBatteryDischargeFloorA =
  Math.max(profileSpecificDischargeFloorA, batteryDischargeSoftDynamicA);