using CordonelPreadjustmentUi;
using CordonelPreadjustmentUi.Processes.Itinerary;
using GenesisCordonelInterface.Core.DataStorage.Config;
using GenesisCordonelInterface.Core.DataStorage.Reading.Common.Models;
using GenesisCordonelInterface.Core.DataStorage.Reading.Implementation.MeterLoginPasswords;
using GenesisCordonelInterface.Core.DataStorage.Reading.Implementation.PreAdjustmentCalibrationParams;
using System;
using System.Collections.Generic;
using System.IO.Ports;
using System.Threading;
using System.Threading.Tasks;
using Xylem.Common.Hardware.WaterMeter.WaterMeterCore;
using Xylem.Common.Logic.ProductionOrderCore.OrderData;
using Xylem.Common.Ui.CordonelPreadjustmentUi;
using static GenesisCordonelInterface.API.PublicModels;

namespace GenesisCordonelInterface.API
{
    /// <summary>
    /// Public-facing facade for external applications integrating with
    /// Genesis Cordonel Interface.
    /// </summary>
    /// <remarks>
    /// This class exposes a simplified and controlled API for external callers.
    /// It validates public input, maps public request models to internal models,
    /// forwards operations to the internal GCI implementation and exposes status
    /// notifications for meter batch changes.
    ///
    /// This layer should stay thin. Business logic and meter communication are
    /// handled by <see cref="InterfaceGCIToLaatzen"/>.
    /// </remarks>
    public class InterfaceOutsideToGCI
    {
        /// <summary>
        /// Internal GCI implementation used by this public facade.
        /// </summary>
        public readonly InterfaceGCIToLaatzen _innerMeterAPI;

        /// <summary>
        /// Occurs when meter batch status information changes.
        /// </summary>
        public event Action<List<MeterBatchDebugStatus>> MeterBatchStatusChanged;
        private readonly IMeterLoginPasswordReader loginPasswordsReader;
        private readonly IPreAdjustmentCalibrationParamsReader calibrationParamsReader;
        private readonly Core.DataStorage.Writing.CalibrationResultWriter calibrationResultWriter =
            new Core.DataStorage.Writing.CalibrationResultWriter(null);

        /// <summary>Stores one detached completion record without accessing meter ports.</summary>
        public Task<CalibrationWriteResult> StorePreadjustmentCompletionResultAsync(
            PreadjustmentCompletionRecord record, CancellationToken token = default(CancellationToken))
        {
            if (record == null) throw new ArgumentNullException(nameof(record));
            // Capture the progress instance and slot for this write, even if a new
            // batch is initialized while the database operation is still finishing.
            var progress = _innerMeterAPI?._progressProcess;
            int? slot = record.Slot;
            Action<string> diagnostic = null;
            if (progress != null && slot.HasValue && slot.Value > 0)
                diagnostic = message => progress.DebugMessage(message, slot.Value, "DB");
            return calibrationResultWriter.StorePreadjustmentCompletionAsync(record, token, diagnostic);
        }

        /// <summary>Creates a synthetic Completion record and exercises the real configured SQL writer.</summary>
        public async Task<CompletionProcessResult> StoreSimulatedCompletionResultAsync(
            int slot, int pcbId, bool phaseSuccess, string phaseError,
            CancellationToken token, Action<string> diagnostic)
        {
            token.ThrowIfCancellationRequested();
            if (slot <= 0) throw new ArgumentOutOfRangeException(nameof(slot));
            // Synthetic fixture values belong to GCI, not to the hardware Completion process.
            var record = new PreadjustmentCompletionRecord
            {
                Slot = slot, PcbId = pcbId, MeterSize = 2,
                ZeroOffset1 = -20, ZeroOffset2 = -30, ZeroOffset3 = -67,
                FirstHitUpdatePeriod = 10, FirstHitShift = 4,
                FirstHitPercent1 = 17, FirstHitPercent2 = 13, FirstHitPercent3 = 17,
                ToFTempOffset1 = 22260, ToFTempOffset2 = -115410, ToFTempOffset3 = 14992,
                Date = DateTime.UtcNow, Successful = phaseSuccess
            };
            // Optional diagnostic subscribers must never change the storage outcome.
            try { diagnostic?.Invoke("Simulated calibration data; actual SQL write requested. Fixture MeterSize=2."); }
            catch (Exception) { }
            var write = await calibrationResultWriter.StorePreadjustmentCompletionAsync(
                record, token, diagnostic).ConfigureAwait(false);
            var result = new CompletionProcessResult
            {
                Slot = slot, Success = phaseSuccess, ProcessName = "PreAdjustment_Completion",
                ErrorMessage = phaseError
            };
            result.DatabaseRecords.Add(record);
            result.DatabaseWrites.Add(new CompletionDatabaseWriteResult { Slot = slot, Result = write });
            return result;
        }

        /// <summary>Stores Q3 values supplied by TBF; does not perform Q3 calibration.</summary>
        public Task<CalibrationWriteResult> StoreQ3CalibrationResultAsync(
            Q3CalibrationRecord record, CancellationToken token = default(CancellationToken))
        {
            return calibrationResultWriter.StoreQ3CalibrationAsync(record, token);
        }

        public Task<CalibrationWriteResult> StoreQ3CalibrationResultAsync(
            Q3CalibrationRecord record, CancellationToken token, Action<string> diagnostic)
        {
            return calibrationResultWriter.StoreQ3CalibrationAsync(record, token, diagnostic);
        }

        public Task<CalibrationWriteResult> StoreSimulatedQ3CalibrationResultAsync(
            int pcbId, CancellationToken token, Action<string> diagnostic)
        {
            token.ThrowIfCancellationRequested();
            try { diagnostic?.Invoke("Simulated Q3 fixture values; actual SQL write requested."); }
            catch (Exception) { }
            return calibrationResultWriter.StoreQ3CalibrationAsync(new Q3CalibrationRecord
            {
                PcbId = pcbId, P1Offset = -0.3, P1Cal = 15260,
                P2Offset = -0.3, P2Cal = 15451, P3Offset = -0.3, P3Cal = 15204,
                Date = DateTime.UtcNow
            }, token, diagnostic);
        }

        /// <summary>
        /// Initializes a new instance of the public GCI facade.
        /// </summary>
        public InterfaceOutsideToGCI()
        {

        }

        /// <summary>
        /// Initializes a new instance of the public GCI facade.
        /// </summary>
        public InterfaceOutsideToGCI(
            InterfaceGCIToLaatzen innerMeterApi,
            IMeterLoginPasswordReader passwordReader,
            IPreAdjustmentCalibrationParamsReader calibrationReader)
            : this(innerMeterApi, passwordReader, calibrationReader, null)
        {
        }

        public InterfaceOutsideToGCI(
            InterfaceGCIToLaatzen innerMeterApi,
            IMeterLoginPasswordReader passwordReader,
            IPreAdjustmentCalibrationParamsReader calibrationReader,
            GciDataStorageConfig storageConfig)
        {
            _innerMeterAPI = innerMeterApi?? throw new ArgumentNullException(nameof(innerMeterApi));
            loginPasswordsReader = passwordReader ?? throw new ArgumentNullException(nameof(passwordReader));
            calibrationParamsReader = calibrationReader ?? throw new ArgumentNullException(nameof(calibrationReader));
            calibrationResultWriter = new Core.DataStorage.Writing.CalibrationResultWriter(storageConfig);

            //init handlers
            //_innerMeterAPI._progressProcess.OnRequestedCalibrationParamsFromDb += RequestedCalibrationParamsFromDb;
        }

        private async void RequestedCalibrationParamsFromDb(
            object sender,
            EventArgsProcessProgress e)
        {
            var progress = e.Value;
            var source = progress.CancellationSource;
            var token = source.Token;
            try
            {
                token.ThrowIfCancellationRequested();
                DataQuery query = new DataQuery();
                query.QueryParams.Add(((int)e.Value.Setting.MeterSize).ToString());

                Dictionary<string, UInt32> calibrationParams = await ReadPreAdjustmentCalibrationParamsAsync(query, token).ConfigureAwait(false);

                lock (progress)
                {
                    if (!token.IsCancellationRequested && ReferenceEquals(progress.CancellationSource, source))
                        progress.PushedCalibrationParams = calibrationParams;
                }
            }
            catch (OperationCanceledException) { }
            catch (Exception ex)
            {
                if (!token.IsCancellationRequested && ReferenceEquals(progress.CancellationSource, source))
                    progress.DebugMessage($"Calibration params reading failed: {ex.Message}");
            }
            finally
            {
                lock (progress)
                {
                    if (!token.IsCancellationRequested && ReferenceEquals(progress.CancellationSource, source))
                        progress.CalibrationParamsReadEvent.Set();
                }
            }
        }

        // Laatzen ToolBox actions

        #region ================================== PORT DETECTION ==================================

        public PortDetectionResult DetectStreamingPort(int slot)
        {
            var result = _innerMeterAPI?.DetectStreamingPort(slot);
            //RaiseMeterBatchStatusChanged();
            return result;
        }

        public async Task<PortDetectionResult> DetectStreamingPortAsync(
            int slot,
            CancellationToken token = default(CancellationToken))
        {
            var result = await _innerMeterAPI?.DetectStreamingPortAsync(slot, token);
            //RaiseMeterBatchStatusChanged();
            return result;
        }

        public PortDetectionResult DetectRequestPort(int slot)
        {
            var result = _innerMeterAPI?.DetectRequestPort(slot);
            //RaiseMeterBatchStatusChanged();
            return result;
        }

        public async Task<PortDetectionResult> DetectRequestPortAsync(
            int slot,
            CancellationToken token = default(CancellationToken))
        {
            var result = await _innerMeterAPI?.DetectRequestPortAsync(slot, token);
            //RaiseMeterBatchStatusChanged();
            return result;
        }

        #endregion

        #region ================================== INIT/UPDATE/GET slot ==================================

        /// <summary>Acquires streaming reception until the returned lease is disposed.</summary>
        public Task<IDisposable> AcquirePreadjustmentStreamingPortAsync(
            int slot, GciPortConfig streamingPort, CancellationToken token = default)
        {
            if (streamingPort == null) throw new ArgumentNullException(nameof(streamingPort));
            var mappedPort = ModelsMapping.MapPort(streamingPort);
            if (!mappedPort.HasValue) throw new ArgumentException("A streaming port is required.", nameof(streamingPort));
            return _innerMeterAPI.AcquirePreadjustmentStreamingPortAsync(slot, mappedPort.Value, token);
        }

        /// <summary>
        /// Initializes a meter slot using the provided slot configuration.
        /// </summary>
        /// <param name="request">
        /// Slot initialization request containing slot id, configuration source,
        /// password source, request port and streaming port.
        /// </param>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>
        /// Result describing whether the slot was created, updated, already existed or failed.
        /// </returns>
        /// <exception cref="ArgumentNullException">
        /// Thrown when <paramref name="request"/> is null.
        /// </exception>
        public async Task<GciInitSlotResult> InitSlotAsync(
            GciInitSlotRequest request,
            CancellationToken token = default)
        {
            if (request == null)
                throw new ArgumentNullException(nameof(request));

            var result = await _innerMeterAPI.InitSlotAsync(
                request.SlotId,
                ModelsMapping.MapConfigSource(request.ConfigSource),
                ModelsMapping.MapPasswordSource(request.PasswordSource),
                ModelsMapping.MapPort(request.RequestPort),
                ModelsMapping.MapPort(request.StreamingPort),
                token).ConfigureAwait(false);

            //RaiseMeterBatchStatusChanged();

            return result;
        }

        /// <summary>
        /// Updates configuration of an existing meter slot.
        /// </summary>
        /// <param name="request">
        /// Slot configuration request containing updated configuration source,
        /// password source and port settings.
        /// </param>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>
        /// Result describing whether the slot update succeeded or failed.
        /// </returns>
        /// <exception cref="ArgumentNullException">
        /// Thrown when <paramref name="request"/> is null.
        /// </exception>
        public async Task<GciInitSlotResult> UpdateSlotAsync(
            GciInitSlotRequest request,
            CancellationToken token = default)
        {
            if (request == null)
                throw new ArgumentNullException(nameof(request));

            var result = await _innerMeterAPI.UpdateSlotAsync(
                request.SlotId,
                ModelsMapping.MapConfigSource(request.ConfigSource),
                ModelsMapping.MapPasswordSource(request.PasswordSource),
                ModelsMapping.MapPort(request.RequestPort),
                ModelsMapping.MapPort(request.StreamingPort),
                token).ConfigureAwait(false);

            //RaiseMeterBatchStatusChanged();

            return result;
        }

        /// <summary>
        /// Gets information about one meter slot.
        /// </summary>
        /// <param name="slotId">Slot id to query. Must be greater than zero.</param>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>
        /// Slot information including existence, connection state, login state,
        /// PCB id and configured communication ports.
        /// </returns>
        /// <exception cref="ArgumentException">
        /// Thrown when <paramref name="slotId"/> is invalid.
        /// </exception>
        public async Task<GciSlotInfo> GetSlotAsync(
                int slotId,
                CancellationToken token = default)
        {
            if (slotId <= 0)
                throw new ArgumentException("Invalid slot id.");

            var result = await _innerMeterAPI.GetOneMeterInfo(slotId, token).ConfigureAwait(false);

            return result;
        }

        /// <summary>
        /// Gets information about all currently initialized meter slots.
        /// </summary>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>
        /// Collection of slot information records for all known meters.
        /// </returns>
        public async Task<GciAllSlotsInfo> GetAllSlotsAsync(
                CancellationToken token = default)
        {
            var result = await _innerMeterAPI.GetAllMetersInfo(token).ConfigureAwait(false);

            return result;
        }

        /// <summary>
        /// Cleans one meter slot and releases its runtime resources.
        /// </summary>
        /// <param name="slot">Slot id to clean. Must be greater than zero.</param>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>
        /// Result describing whether the slot cleanup succeeded or failed.
        /// </returns>
        /// <exception cref="ArgumentException">
        /// Thrown when <paramref name="slot"/> is invalid.
        /// </exception>
        public async Task<GciCleanSlotResult> CleanSlotAsync(
                int slot,
                CancellationToken token = default)
        {
            if (slot <= 0)
                throw new ArgumentException("Invalid slot id.", nameof(slot));

            var result = await _innerMeterAPI.CleanSlotAsync(slot, token).ConfigureAwait(false);

            //RaiseMeterBatchStatusChanged();

            return result;
        }

        /// <summary>
        /// Cleans all initialized meter slots and releases related runtime resources.
        /// </summary>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>
        /// Result describing whether cleanup of all slots succeeded or failed.
        /// </returns>
        public async Task<GciCleanAllSlotsResult> CleanAllSlotsAsync(
                CancellationToken token = default)
        {
            var result = await _innerMeterAPI.CleanAllSlotsAsync(token).ConfigureAwait(false);

            //RaiseMeterBatchStatusChanged();

            return result;
        }
        #endregion

        #region ================================== PASSWORD ==================================

        /// <summary>
        /// Sets runtime password for the meter assigned to the specified slot.
        /// </summary>
        /// <param name="slot">Slot id. Must be greater than zero.</param>
        /// <param name="password">Password to assign to the meter.</param>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>Result containing password update status.</returns>
        /// <exception cref="ArgumentException">
        /// Thrown when slot id is invalid or password is empty.
        /// </exception>
        public async Task<GciSetPasswordResult> SetPasswordAsync(
            int slot,
            string password,
            CancellationToken token = default)
        {
            if (slot <= 0)
                throw new ArgumentException("Invalid slot id.");

            if (string.IsNullOrWhiteSpace(password))
                throw new ArgumentException("Password is empty.");

            var result = await _innerMeterAPI.SetMeterPasswordAsync(slot, password, token).ConfigureAwait(false);

            //RaiseMeterBatchStatusChanged();

            return result;
        }

        #endregion

        #region ================================== LOGIN ==================================

        /// <summary>
        /// Logs in to the meter assigned to the specified slot.
        /// </summary>
        /// <param name="slot">Slot id. Must be greater than zero.</param>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>Login result containing login state and status message.</returns>
        /// <exception cref="ArgumentException">
        /// Thrown when <paramref name="slot"/> is invalid.
        /// </exception>
        public async Task<PublicModels.GciLoginResult> LoginOneSlotAsync(
            int slot,
            CancellationToken token = default)
        {
            if (slot <= 0)
                throw new ArgumentException("Invalid slot id.");

            var result = await _innerMeterAPI.LoginOneSlotAsync(slot, token).ConfigureAwait(false);
            return result;

            //RaiseMeterBatchStatusChanged();
        }
        #endregion

        #region ================================== CONNECTION ==================================

        /// <summary>
        /// Connects the meter assigned to the specified slot.
        /// </summary>
        /// <param name="slot">Slot id. Must be greater than zero.</param>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>Connection result containing connection state and status message.</returns>
        /// <exception cref="ArgumentException">
        /// Thrown when <paramref name="slot"/> is invalid.
        /// </exception>
        public async Task<GciConnectResult> ConnectOneSlotAsync(
                int slot,
                CancellationToken token = default)
        {
            if (slot <= 0)
                throw new ArgumentException("Invalid slot id.");

            var result = await _innerMeterAPI.ConnectOneSlotAsync(slot, token).ConfigureAwait(false);

            //RaiseMeterBatchStatusChanged();

            return result;
        }

        /// <summary>
        /// Disconnects the meter assigned to the specified slot.
        /// </summary>
        /// <param name="slot">Slot id. Must be greater than zero.</param>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>Disconnect result containing final connection state and status message.</returns>
        /// <exception cref="ArgumentException">
        /// Thrown when <paramref name="slot"/> is invalid.
        /// </exception>
        public async Task<GciDisconnectResult> DisconnectAsync(
                int slot,
                CancellationToken token = default)
        {
            if (slot <= 0)
                throw new ArgumentException("Invalid slot id.");

            var result = await _innerMeterAPI.DisconnectAsync(slot, token).ConfigureAwait(false);

            //RaiseMeterBatchStatusChanged();

            return result;
        }
        #endregion

        #region ================================== PCB ==================================

        /// <summary>
        /// Reads PCB identifier from the meter assigned to the specified slot.
        /// </summary>
        /// <param name="slot">Slot id. Must be greater than zero.</param>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>Result containing PCB id and read status.</returns>
        /// <exception cref="ArgumentException">
        /// Thrown when <paramref name="slot"/> is invalid.
        /// </exception>
        public async Task<GciGetPcbIdResult> GetPcbIdAsync(
                int slot,
                CancellationToken token = default)
        {
            if (slot <= 0)
                throw new ArgumentException("Invalid slot id.");

            var result = await _innerMeterAPI.GetPcbIdAsync(slot, token).ConfigureAwait(false);

            return result;
        }
        #endregion

        #region ================================== READ ==================================

        /// <summary>
        /// Reads a firmware register value from the meter assigned to the specified slot.
        /// </summary>
        /// <param name="slot">Slot id. Must be greater than zero.</param>
        /// <param name="registerName">Register identifier to read.</param>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>
        /// Register read result containing raw register value and operation status.
        /// </returns>
        /// <exception cref="ArgumentException">
        /// Thrown when slot id or register name is invalid.
        /// </exception>
        public async Task<RegisterReadResult> ReadRegisterAsync(
            int slot,
            string registerName,
            CancellationToken token = default)
        {
            if (slot <= 0)
                throw new ArgumentException("Invalid slot id.", nameof(slot));

            if (string.IsNullOrWhiteSpace(registerName))
                throw new ArgumentException("Register name is empty.", nameof(registerName));

            var result = await _innerMeterAPI
                .ReadRegisterAsync(slot, registerName, token)
                .ConfigureAwait(false);

            //RaiseMeterBatchStatusChanged();

            return result;
        }

        #endregion

        #region ================================== WRITE ==================================

        /// <summary>
        /// Writes a value to a firmware register.
        /// </summary>
        /// <param name="slot">Slot id. Must be greater than zero.</param>
        /// <param name="registerName">Register identifier to write.</param>
        /// <param name="value">Value to write.</param>
        /// <param name="storeToDevice">
        /// Indicates whether configuration should be permanently stored.
        /// </param>
        /// <param name="refreshSystemState">
        /// Indicates whether firmware system state should be refreshed after write.
        /// </param>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>
        /// Register write result describing write status.
        /// </returns>
        /// <exception cref="ArgumentException">
        /// Thrown when slot id or register name is invalid.
        /// </exception>
        public async Task<RegisterWriteResult> WriteRegisterAsync(
             int slot,
             string registerName,
             object value,
             bool storeToDevice = false,
             bool refreshSystemState = false,
             CancellationToken token = default)
        {
            if (slot <= 0)
                throw new ArgumentException("Invalid slot id.", nameof(slot));

            if (string.IsNullOrWhiteSpace(registerName))
                throw new ArgumentException("Register name is empty.", nameof(registerName));

            var result = await _innerMeterAPI
                .WriteRegisterAsync(
                    slot,
                    registerName,
                    value,
                    storeToDevice,
                    refreshSystemState,
                    token)
                .ConfigureAwait(false);

            //RaiseMeterBatchStatusChanged();

            return result;
        }
        #endregion

        #region ================================== Password ==================================

        /// <summary>
        /// Updates meter password for the specified slot.
        /// </summary>
        /// <param name="slot">Slot id. Must be greater than zero.</param>
        /// <param name="password">New password.</param>
        /// <param name="token">Cancellation token used to cancel the asynchronous operation.</param>
        /// <returns>
        /// Password update result.
        /// </returns>
        /// <exception cref="ArgumentException">
        /// Thrown when slot id or password is invalid.
        /// </exception>
        public async Task<GciSetPasswordResult> SetMeterPasswordAsync(
            int slot,
            string password,
            CancellationToken token = default)
        {
            if (slot <= 0)
                throw new ArgumentException("Invalid slot id.", nameof(slot));

            if (string.IsNullOrWhiteSpace(password))
                throw new ArgumentException("Password is empty.", nameof(password));

            var result = await _innerMeterAPI
                .SetMeterPasswordAsync(slot, password, token)
                .ConfigureAwait(false);

            //RaiseMeterBatchStatusChanged();

            return result;
        }

        #endregion

        #region ================================== DEBUG STATUS ==================================

        /// <summary>
        /// Gets runtime diagnostic information for all active workers.
        /// </summary>
        /// <returns>
        /// Collection containing worker state, queue information,
        /// current operation and activity timestamps.
        /// </returns>
        public List<WorkerDebugStatus> GetWorkerDebugStatuses()
        {
            return _innerMeterAPI?.GetWorkerDebugStatuses();
        }

        /// <summary>
        /// Gets runtime diagnostic information for all meter slots.
        /// </summary>
        /// <returns>
        /// Collection containing slot state, connection state,
        /// selected state and communication configuration.
        /// </returns>
        public List<MeterBatchDebugStatus> GetMeterBatchDebugStatuses()
        {
            return _innerMeterAPI?.GetMeterBatchDebugStatuses();
        }

        /// <summary>
        /// Raises meter batch status change notification.
        /// </summary>
        /// <remarks>
        /// Intended to notify external consumers after changes in meter state.
        /// </remarks>
        public void RaiseMeterBatchStatusChanged()
        {
            var statuses = GetMeterBatchDebugStatuses();

            var handler = MeterBatchStatusChanged;
            if (handler != null)
                handler(statuses);
        }

        #endregion

        #region ================================== SLOT SELECTION ==================================

        /// <summary>
        /// Sets selection state for a slot.
        /// </summary>
        /// <param name="slot">Slot id.</param>
        /// <param name="selected">Selection state.</param>
        public void SetSlotSelected(int slot, bool selected)
        {
            _innerMeterAPI?.SetSlotSelected(slot, selected);
            RaiseMeterBatchStatusChanged();
        }

        /// <summary>
        /// Determines whether the specified slot is selected.
        /// </summary>
        /// <param name="slot">Slot id.</param>
        /// <returns>
        /// True if slot is selected; otherwise false.
        /// </returns>
        public bool IsSlotSelected(int slot)
        {
            return (bool)(_innerMeterAPI?.IsSlotSelected(slot));
        }

        /// <summary>
        /// Gets all selected slot identifiers.
        /// </summary>
        /// <returns>
        /// Ordered collection of selected slot ids.
        /// </returns>
        public List<int> GetSelectedSlots()
        {
            return _innerMeterAPI?.GetSelectedSlots();
        }

        #endregion

        #region ================================== Register names ==================================

        /// <summary>
        /// Gets all available firmware register identifiers.
        /// </summary>
        /// <returns>
        /// Ordered collection of register names.
        /// </returns>
        public List<string> GetAllRegisterNames()
        {
            return _innerMeterAPI?.GetAllRegisterNames();
        }

        #endregion

        // Laatzen Preadjustment processes

        #region ================================== PreAdjustment ==================================
        public PreAdjustmentInitializationResult Preadjustment_Initialization(
            ProcessProgress pp,
            List<MeterStateControl> mc)
        {
            //init handlers
            pp.OnRequestedCalibrationParamsFromDb -= RequestedCalibrationParamsFromDb;
            pp.OnRequestedCalibrationParamsFromDb += RequestedCalibrationParamsFromDb;

            return _innerMeterAPI?.Preadjustment_Initialization(pp, mc);
        }

        public PreAdjustmentInitializationResult Preadjustment_Initialization(
            ProcessProgress pp,
            List<MeterStateControl> mc,
            CancellationToken token)
        {
            pp.OnRequestedCalibrationParamsFromDb -= RequestedCalibrationParamsFromDb;
            pp.OnRequestedCalibrationParamsFromDb += RequestedCalibrationParamsFromDb;
            return _innerMeterAPI?.Preadjustment_Initialization(pp, mc, token);
        }

        public void CancelPreadjustment()
        {
            _innerMeterAPI?.CancelPreadjustment();
        }

        public Task<PreadjustmentDetectResult> PreAdjustment_DetectAsync(
            IEnumerable<PublicModels.MeterBatchDebugStatus> selectedSlots,
            CancellationToken token = default)
        {
            return _innerMeterAPI.PreAdjustment_DetectAsync(selectedSlots, token);
        }

        public PreadjustmentDetectResult PreAdjustment_DetectDirect(
            IEnumerable<PublicModels.MeterBatchDebugStatus> selectedSlots,
            CancellationToken token = default)
        {
            return _innerMeterAPI.PreAdjustment_DetectDirect(selectedSlots, token);
        }

        public Task<PreAdjustmentProcessResult> PreAdjustment_PreparationAsync(
            int slot,
            CancellationToken token = default)
        {
            return _innerMeterAPI.PreAdjustment_PreparationAsync(slot, token);
        }

        public PreAdjustmentProcessResult PreAdjustment_PreparationDirect()
        {
            return _innerMeterAPI.PreAdjustment_PreparationDirect();
        }

        public PreAdjustmentProcessResult PreAdjustment_PreparationDirect(CancellationToken token)
        {
            return _innerMeterAPI.PreAdjustment_PreparationDirect(token);
        }

        public Task<PreAdjustmentProcessResult> PreAdjustment_AmplitudeTestAsync(
            int slot,
            CancellationToken token = default)
        {
            return _innerMeterAPI.PreAdjustment_AmplitudeTestAsync(slot, token);
        }

        public PreAdjustmentProcessResult PreAdjustment_AmplitudeTestDirect()
        {
            return _innerMeterAPI.PreAdjustment_AmplitudeTestDirect();
        }

        public PreAdjustmentProcessResult PreAdjustment_AmplitudeTestDirect(CancellationToken token)
        {
            return _innerMeterAPI.PreAdjustment_AmplitudeTestDirect(token);
        }

        public Task<PreAdjustmentProcessResult> PreAdjustment_TemperatureCalibrationAsync(
            int slot,
            CancellationToken token = default)
        {
            return _innerMeterAPI.PreAdjustment_TemperatureCalibrationAsync(slot, token);
        }

        public PreAdjustmentProcessResult PreAdjustment_TemperatureCalibrationDirect()
        {
            return _innerMeterAPI.PreAdjustment_TemperatureCalibrationDirect();
        }

        public PreAdjustmentProcessResult PreAdjustment_TemperatureCalibrationDirect(CancellationToken token)
        {
            return _innerMeterAPI.PreAdjustment_TemperatureCalibrationDirect(token);
        }

        public PreAdjustmentProcessResult PreAdjustment_TemperatureCalibrationDirect(
            CalibrationTemperatureInput temperature, CancellationToken token)
        {
            return _innerMeterAPI.PreAdjustment_TemperatureCalibrationDirect(temperature, token);
        }

        public Task<PreAdjustmentProcessResult> PreAdjustment_TemperatureCalibrationAsync(
            int slot, CalibrationTemperatureInput temperature, CancellationToken token)
        {
            return _innerMeterAPI.PreAdjustment_TemperatureCalibrationAsync(slot, temperature, token);
        }

        public TemperatureCalibrationResult PreAdjustment_TemperatureCalibrationDetailedDirect(
            CalibrationTemperatureInput temperature, CancellationToken token)
        {
            return _innerMeterAPI.PreAdjustment_TemperatureCalibrationDetailedDirect(temperature, token);
        }

        public Task<TemperatureCalibrationResult> PreAdjustment_TemperatureCalibrationDetailedAsync(
            int slot, CalibrationTemperatureInput temperature, CancellationToken token)
        {
            return _innerMeterAPI.PreAdjustment_TemperatureCalibrationDetailedAsync(slot, temperature, token);
        }

        public bool PreAdjustment_PushTemperature(
            double temperature)
        {
            return _innerMeterAPI.PreAdjustment_PushTemperature(temperature);
        }

        public bool PreAdjustment_PushTemperature(
            double temperature,
            CancellationToken token)
        {
            token.ThrowIfCancellationRequested();
            return _innerMeterAPI.PreAdjustment_PushTemperature(temperature);
        }

        public Task<PreAdjustmentProcessResult> PreAdjustment_OffsetTestAsync(
            int slot,
            CancellationToken token = default)
        {
            return _innerMeterAPI.PreAdjustment_OffsetTestAsync(slot, token);
        }

        public PreAdjustmentProcessResult PreAdjustment_OffsetTestDirect()
        {
            return _innerMeterAPI.PreAdjustment_OffsetTestDirect();
        }

        public PreAdjustmentProcessResult PreAdjustment_OffsetTestDirect(CancellationToken token)
        {
            return _innerMeterAPI.PreAdjustment_OffsetTestDirect(token);
        }

        public Task<PreAdjustmentProcessResult> PreAdjustment_CompletionAsync(
            int slot,
            CancellationToken token = default)
        {
            return _innerMeterAPI.PreAdjustment_CompletionAsync(slot, token);
        }

        public PreAdjustmentProcessResult PreAdjustment_CompletionDirect()
        {
            return _innerMeterAPI.PreAdjustment_CompletionDirect();
        }

        public PreAdjustmentProcessResult PreAdjustment_CompletionDirect(CancellationToken token)
        {
            return _innerMeterAPI.PreAdjustment_CompletionDirect(token);
        }

        #endregion

        #region ================================== UNI DATA STORAGE READER ==================================

        //LoginPasswords reading

        /// <summary>
        /// Reads meter login password from configured GCI data storage.
        /// </summary>
        /// <param name="query">
        /// Data query containing PCB ID or another configured lookup value.
        /// </param>
        /// <param name="token">
        /// Cancellation token used to cancel the asynchronous operation.
        /// </param>
        /// <returns>
        /// Password if found; otherwise null.
        /// </returns>
        public Task<string> ReadMeterLoginPasswordAsync(
            DataQuery query,
            CancellationToken token = default)
        {
            return loginPasswordsReader.ReadMeterLoginPasswordAsync(
                query,
                token);
        }

        //CalibrationParams reading

        /// <summary>
        /// Reads pre-adjustment calibration parameters
        /// from configured GCI data storage.
        /// </summary>
        /// <param name="query">
        /// Data query containing meter size or another configured lookup value.
        /// </param>
        /// <param name="token">
        /// Cancellation token used to cancel the asynchronous operation.
        /// </param>
        /// <returns>
        /// Dictionary:
        ///
        /// Key:
        ///     Calibration parameter name
        ///
        /// Value:
        ///     Calibration parameter value
        /// </returns>
        public Task<Dictionary<string, UInt32>> ReadPreAdjustmentCalibrationParamsAsync(
            DataQuery query,
            CancellationToken token = default)
        {
            return calibrationParamsReader.ReadCalibrationParamsAsync(
                query,
                token);
        }

        #endregion
    }
}