PI_Assync_PLD/Data/AccessRepository.cs

using PI_Assync_PLD.Models;
using System.Data.OleDb;

public class AccessRepository : IDataRepository
{
    private readonly string _connectionString;

    public AccessRepository(string caminhoBD)
    {
        _connectionString = $"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={caminhoBD};Jet OLEDB:Database Password=gds21";
    }

    public DateTime ObterDataInicial()
    {
        using var conn = new OleDbConnection(_connectionString);
        conn.Open();
        string query = "SELECT MAX(Data) FROM PLD_comp";
        using var cmd = new OleDbCommand(query, conn);
        return cmd.ExecuteScalar() is DateTime data ? data.AddDays(1) : new DateTime(2022, 01, 01);
    }

    public void SalvarPLDs(List<PLDModel> plds, DateTime ultimaData)
    {
        using var conn = new OleDbConnection(_connectionString);
        conn.Open();

        // Filtrar apenas os PLDs mais recentes
        var novosPLDs = plds.FindAll(pld => pld.Dia >= ultimaData);
        if (novosPLDs.Count == 0) return; // Nenhum dado novo, então sair da função

        foreach (var pld in novosPLDs)
        {
            string query = "INSERT INTO PLD_comp (Data, Hora, Submercado, Valor, Mes_ref, Dia_da_semana) " +
                           "VALUES (@Data, @Hora, @Submercado, @Valor, @MesRef, @DiaSemana)";
            using var cmd = new OleDbCommand(query, conn);
            cmd.Parameters.AddWithValue("@Data", pld.Dia);
            cmd.Parameters.AddWithValue("@Hora", pld.Hora);
            cmd.Parameters.AddWithValue("@Submercado", pld.Submercado);
            cmd.Parameters.AddWithValue("@Valor", pld.Valor);
            cmd.Parameters.AddWithValue("@MesRef", pld.Mes);
            cmd.Parameters.AddWithValue("@DiaSemana", pld.DiaSemana);
            cmd.ExecuteNonQuery();
        }
    }
}