using EVCB_OCPP.Domain;
using EVCB_OCPP.Packet.Messages.SubTypes;
using EVCB_OCPP.WSServer.Helper;
using Microsoft.Data.SqlClient;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace EVCB_OCPP.WSServer.Service;

public class MeterValueDbService
{
    private readonly IDbContextFactory<MeterValueDBContext> meterValueDbContextFactory;
    private readonly ILoggerFactory loggerFactory;
    //private GroupSingleHandler<InsertMeterValueParam> insertMeterValueHandler;

    public MeterValueDbService(IDbContextFactory<MeterValueDBContext> meterValueDbContextFactory, ILoggerFactory loggerFactory)
    {
        this.meterValueDbContextFactory = meterValueDbContextFactory;
        this.loggerFactory = loggerFactory;
        //InitInsertMeterValueHandler();
    }

    public async Task InsertAsync(string chargeBoxId, byte connectorId, decimal value, DateTime createdOn
            , int contextId, int formatId, int measurandId, int phaseId
            , int locationId, int unitId, int transactionId)
    {
        using var db = await meterValueDbContextFactory.CreateDbContextAsync();

        string sp = "[dbo].[uspInsertMeterValueRecord] @ChargeBoxId, @ConnectorId,@Value,@CreatedOn,@ContextId,@FormatId,@MeasurandId,@PhaseId,@LocationId,@UnitId,@TransactionId";

        var param = new InsertMeterValueParam(chargeBoxId, connectorId, value, createdOn, contextId, formatId, measurandId, phaseId, locationId, unitId, transactionId);

        List<SqlParameter> parameter = new List<SqlParameter>();
        parameter.AddInsertMeterValueRecordSqlParameters(
            chargeBoxId: param.chargeBoxId
            , connectorId: (byte)param.connectorId
            , value: param.value
            , createdOn: param.createdOn
            , contextId: param.contextId
            , formatId: param.formatId
            , measurandId: param.measurandId
            , phaseId: param.phaseId
            , locationId: param.locationId
            , unitId: param.unitId
            , transactionId: param.transactionId);

        await db.Database.ExecuteSqlRawAsync(sp, parameter.ToArray());
        //return insertMeterValueHandler.HandleAsync(new InsertMeterValueParam(chargeBoxId, connectorId, value, createdOn, contextId, formatId, measurandId, phaseId, locationId, unitId, transactionId));
    }

//    private void InitInsertMeterValueHandler()
//    {
//        if (insertMeterValueHandler is not null)
//        {
//            throw new Exception($"{nameof(InitInsertMeterValueHandler)} should only called once");
//        }

//        insertMeterValueHandler = new GroupSingleHandler<InsertMeterValueParam>(async (parms) => {

//            using var db = await meterValueDbContextFactory.CreateDbContextAsync();
//            using var trans = await db.Database.BeginTransactionAsync();

//            string sp = "[dbo].[uspInsertMeterValueRecord] @ChargeBoxId," +
//"@ConnectorId,@Value,@CreatedOn,@ContextId,@FormatId,@MeasurandId,@PhaseId,@LocationId,@UnitId,@TransactionId";

//            foreach (var param in parms)
//            {
//                List<SqlParameter> parameter = new List<SqlParameter>();
//                parameter.AddInsertMeterValueRecordSqlParameters(
//                    chargeBoxId: param.chargeBoxId
//                    , connectorId: (byte)param.connectorId
//                    , value: param.value
//                    , createdOn: param.createdOn
//                    , contextId: param.contextId
//                    , formatId: param.formatId
//                    , measurandId: param.measurandId
//                    , phaseId: param.phaseId
//                    , locationId: param.locationId
//                    , unitId: param.unitId
//                    , transactionId: param.transactionId);

//                await db.Database.ExecuteSqlRawAsync(sp, parameter.ToArray());
//            }

//            await trans.CommitAsync();
//        }
//        , loggerFactory.CreateLogger("InsertMeterValueHandler"));
//    }
}

public record InsertMeterValueParam(string chargeBoxId, byte connectorId, decimal value, DateTime createdOn
            , int contextId, int formatId, int measurandId, int phaseId
            , int locationId, int unitId, int transactionId);