LevelOS-Core/DAL/DALIcmsUf.cs

using Microsoft.Data.SqlClient;
using MLL;
using System;
using System.Collections.Generic;
using System.Data;

namespace DALL
{
    public class DALIcmsUf
    {
        private readonly string connectionString;

        public DALIcmsUf(string conexao)
        {
            connectionString = conexao;
        }

        #region INSERT

        public bool Inserir(ModeloIcmsUf modelo)
        {
            using SqlConnection conn = new(connectionString);

            string sql = @"
            INSERT INTO ICMS_UF
            (
                COD_ITEM,
                UF,
                ICMS
            )
            VALUES
            (
                @COD_ITEM,
                @UF,
                @ICMS
            )";

            using SqlCommand cmd = new(sql, conn);

            PreencherParametros(cmd, modelo);

            conn.Open();

            return cmd.ExecuteNonQuery() > 0;
        }

        #endregion

        #region UPDATE

        public bool Alterar(ModeloIcmsUf modelo)
        {
            using SqlConnection conn = new(connectionString);

            string sql = @"
            UPDATE ICMS_UF SET
                COD_ITEM=@COD_ITEM,
                UF=@UF,
                ICMS=@ICMS
            WHERE ID_ICMS_UF=@ID_ICMS_UF";

            using SqlCommand cmd = new(sql, conn);

            PreencherParametros(cmd, modelo);

            cmd.Parameters.AddWithValue(
                "@ID_ICMS_UF",
                modelo.ID_ICMS_UF);

            conn.Open();

            return cmd.ExecuteNonQuery() > 0;
        }

        #endregion

        #region DELETE

        public bool Excluir(int id)
        {
            using SqlConnection conn = new(connectionString);

            using SqlCommand cmd = new(
                "DELETE FROM ICMS_UF WHERE ID_ICMS_UF=@ID",
                conn);

            cmd.Parameters.AddWithValue("@ID", id);

            conn.Open();

            return cmd.ExecuteNonQuery() > 0;
        }

        #endregion

        #region CARREGAR

        public ModeloIcmsUf? Carregar(int id)
        {
            using SqlConnection conn = new(connectionString);

            using SqlCommand cmd = new(
                "SELECT * FROM ICMS_UF WHERE ID_ICMS_UF=@ID",
                conn);

            cmd.Parameters.AddWithValue("@ID", id);

            conn.Open();

            using SqlDataReader dr = cmd.ExecuteReader();

            if (dr.Read())
                return PreencherModelo(dr);

            return null;
        }

        #endregion

        #region CARREGAR POR CÓDIGO

        public ModeloIcmsUf? CarregarPorCodigo(string codigo)
        {
            using SqlConnection conn = new(connectionString);

            using SqlCommand cmd = new(
                "SELECT * FROM ICMS_UF WHERE CODIGO=@CODIGO",
                conn);

            cmd.Parameters.AddWithValue("@CODIGO", codigo);

            conn.Open();

            using SqlDataReader dr = cmd.ExecuteReader();

            if (dr.Read())
                return PreencherModelo(dr);

            return null;
        }

        #endregion

        #region LISTAR

        public List<ModeloIcmsUf> Listar(string? codigo = null,string? codItem = null,string? uf = null)
        {
            List<ModeloIcmsUf> lista = [];

            using SqlConnection conn = new(connectionString);

            string sql = @"
            SELECT *
            FROM ICMS_UF
            WHERE 1=1";

            using SqlCommand cmd = new();

            if (!string.IsNullOrWhiteSpace(codigo))
            {
                sql += " AND CODIGO LIKE @CODIGO";

                cmd.Parameters.AddWithValue(
                    "@CODIGO",
                    "%" + codigo + "%");
            }

            if (!string.IsNullOrWhiteSpace(codItem))
            {
                sql += " AND COD_ITEM=@COD_ITEM";

                cmd.Parameters.AddWithValue(
                    "@COD_ITEM",
                    codItem);
            }

            if (!string.IsNullOrWhiteSpace(uf))
            {
                sql += " AND UF=@UF";

                cmd.Parameters.AddWithValue(
                    "@UF",
                    uf);
            }

            sql += " ORDER BY UF";

            cmd.Connection = conn;
            cmd.CommandText = sql;

            conn.Open();

            using SqlDataReader dr = cmd.ExecuteReader();

            while (dr.Read())
            {
                lista.Add(
                    PreencherModelo(dr));
            }

            return lista;
        }

        #endregion

        #region EXISTE

        public bool Existe(string codItem, string uf)
        {
            using SqlConnection conn = new(connectionString);

            string sql = @"
            SELECT COUNT(*)
            FROM ICMS_UF
            WHERE COD_ITEM=@COD_ITEM
            AND UF=@UF";

            using SqlCommand cmd = new(sql, conn);

            cmd.Parameters.AddWithValue("@COD_ITEM", codItem);
            cmd.Parameters.AddWithValue("@UF", uf);

            conn.Open();

            return Convert.ToInt32(
                cmd.ExecuteScalar()) > 0;
        }

        #endregion

        #region QUANTIDADE TOTAL

        public int QuantidadeTotal()
        {
            using SqlConnection conn = new(connectionString);

            using SqlCommand cmd = new(
                "SELECT COUNT(*) FROM ICMS_UF",
                conn);

            conn.Open();

            return Convert.ToInt32(
                cmd.ExecuteScalar());
        }

        #endregion

        #region PREENCHER MODELO

        private ModeloIcmsUf PreencherModelo(SqlDataReader dr)
        {
            return new ModeloIcmsUf
            {
                ID_ICMS_UF = Convert.ToInt32(dr["ID_ICMS_UF"]),
                CODIGO = Convert.ToString(dr["CODIGO"]) ?? "",
                COD_ITEM = Convert.ToString(dr["COD_ITEM"]) ?? "",
                UF = Convert.ToString(dr["UF"]) ?? "",
                ICMS = Convert.ToString(dr["ICMS"]) ?? ""
            };
        }

        #endregion

        #region PREENCHER PARÂMETROS

        private void PreencherParametros(
            SqlCommand cmd,
            ModeloIcmsUf modelo)
        {
            cmd.Parameters.AddWithValue(
                "@COD_ITEM",
                modelo.COD_ITEM);

            cmd.Parameters.AddWithValue(
                "@UF",
                modelo.UF);

            cmd.Parameters.AddWithValue(
                "@ICMS",
                modelo.ICMS);
        }

        #endregion
    }
}