BealeEngineering/BealeEngineering/BealeEngineering.Core/Data/Database/Sale/ReadInvoiceHeader.cs

using Dapper;
using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BealeEngineering.Core.Data.Database.Sale
{
    public class ReadInvoiceHeader : Connection
    {
        public ReadInvoiceHeader(string sqlConnectionString) : base(sqlConnectionString)
        {

        }
        /// <summary>
        /// Setting this will override he other filters, within the sql statement.
        /// </summary>
        protected List<int> SalesInvoiceIdList { get; set; }
        private bool SalesInvoiceIdListListIsSet
        {
            get
            {
                if (SalesInvoiceIdList == null || !SalesInvoiceIdList.Any()) { return false; }
                else { return true; }
            }
        }
        public DateTime DateFrom { get; set; }
        public bool DateFromIsSet
        {
            get
            {
                if (DateFrom == null || DateFrom == default(DateTime)) { return false; }
                else { return true; }
            }
        }
        public DateTime DateTo { get; set; }
        public bool DateToIsSet
        {
            get
            {
                if (DateTo == null || DateTo == default(DateTime)) { return false; }
                else { return true; }
            }
        }
        public List<string> InvoiceNumber { get; set; }
        public bool InvoiceNumberIsSet
        {
            get
            {
                if (InvoiceNumber == null || !InvoiceNumber.Any()) { return false; }
                else { return true; }
            }
        }
        public List<string> Reference { get; set; }
        public bool ReferenceIsSet
        {
            get
            {
                if (Reference == null || !Reference.Any()) { return false; }
                else { return true; }
            }
        }
        public List<Model.Sale.InvoiceHeader> GetBySaleInvoiceId(List<int> orderIdList)
        {
            SalesInvoiceIdList = orderIdList;
            try
            {
                return GetByFilters();
            }
            catch (Exception ex)
            {
                throw ex;
            }
            finally
            {
                SalesInvoiceIdList = null;
            }
        }
        protected void AddSqlWhereString(ref string sqlString, ref DynamicParameters parameters)
        {
            if (string.IsNullOrWhiteSpace(sqlString))
            { throw new Exception("SQL string is empty."); }

            sqlString = sqlString + @"
                WHERE 1=1";

            if (SalesInvoiceIdListListIsSet)
            {
                sqlString = sqlString + @"
                    AND SaleInvoice.SaleInvoiceID IN @saleInvoiceId";

                parameters.Add("@saleInvoiceId", SalesInvoiceIdList);
            }
            else
            {
                if (DateFromIsSet)
                {
                    sqlString = sqlString + @"
                    AND InvoiceDate >= @dateFrom";

                    parameters.Add("@dateFrom", DateFrom);
                }
                if (DateToIsSet)
                {
                    sqlString = sqlString + @"
                    AND InvoiceDate <= @dateTo";

                    parameters.Add("@dateTo", DateTo);
                }
                if (InvoiceNumberIsSet)
                {
                    sqlString = sqlString + @"
                    AND SaleInvoiceNumber IN @salesInvoiceNumber";

                    parameters.Add("@salesInvoiceNumber", InvoiceNumber);
                }
                if (ReferenceIsSet)
                {
                    sqlString = sqlString + @"
                    AND Reference IN @reference";

                    parameters.Add("@reference", Reference);
                }
            }
        }
        public List<Model.Sale.InvoiceHeader> GetByFilters()
        {
            // build the sql string and dapper parameters
            var parameters = new DynamicParameters();
            string sqlString = @"
                SELECT SaleInvoice.SaleInvoiceID
	                ,SaleInvoice.SaleInvoiceNumber
	                ,SaleInvoice.InvoiceDate
	                ,SaleInvoice.DateDue
	                ,SaleInvoice.Reference
	                ,SaleInvoice.CurrencyCode
	                ,SaleInvoice.InvoiceTotal
	                ,SaleInvoice.TaxTotal
	                ,SaleInvoice.IsCreditNote
                    ,SaleInvoice.Status
	                ,Contact.ContactName
                FROM SaleInvoice
                INNER JOIN Contact ON SaleInvoice.ContactID = Contact.ContactID";

            AddSqlWhereString(ref sqlString, ref parameters);

            sqlString = sqlString + @"
                ORDER BY SaleInvoiceID";

            // make the call
            using (SqlConnection conn = new SqlConnection(sqlConnectionString))
            {
                conn.Open();

                var invoiceHeaders = conn.Query<Model.Sale.InvoiceHeader>(sqlString, parameters).ToList();
                return invoiceHeaders;
            }
        }
    }
}