BealeEngineering/BealeEngineering/BealeEngineering.Core/Logic/Adapter/ImportXeroInvoiceFlatFile.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BealeEngineering.Core.Logic.Adapter
{
    public class ImportXeroInvoiceFlatFile
    {
        public ImportXeroInvoiceFlatFile()
        {
            // ensure XeroInvoiceFlatFile hasn't changed
            int propertyCount = new Model.Import.XeroInvoiceFlatFile().GetType().GetProperties().Count();
            if (propertyCount != 32)
            {
                throw new Exception("Model.Import.XeroInvoiceFlatFile has changed, it's adapter class may need updating.");
            }
            propertyCount = new Model.Import.XeroInvoiceFlatFile.LineItem().GetType().GetProperties().Count();
            if (propertyCount != 13)
            {
                throw new Exception("Model.Import.XeroInvoiceFlatFile.LineItem has changed, it's adapter class may need updating.");
            }
        }

        public List<Model.Import.XeroInvoiceFlatFile> SaleInvoice(List<Model.Sale.Invoice> invoiceList)
        {
            if (invoiceList == null || !invoiceList.Any()) { return null; }

            var xeroInvoiceList = new List<Model.Import.XeroInvoiceFlatFile>();
            for (int i = 0; i < invoiceList.Count(); i++)
            {
                var xeroInvoice = new Model.Import.XeroInvoiceFlatFile();

                xeroInvoice.ContactName = invoiceList[i].ContactName;
                xeroInvoice.Currency = invoiceList[i].CurrencyCode;
                if (invoiceList[i].DueDateIsSet) { xeroInvoice.DueDate = invoiceList[i].DueDate; }
                xeroInvoice.InvoiceDate = invoiceList[i].InvoiceDate;
                xeroInvoice.InvoiceNumber = invoiceList[i].SaleInvoiceNumber;
                xeroInvoice.Reference = invoiceList[i].Reference;
                xeroInvoice.Status = invoiceList[i].Status;
                xeroInvoice.TaxTotal = invoiceList[i].TaxTotal;
                xeroInvoice.Total = invoiceList[i].InvoiceTotal;
                if (invoiceList[i].IsCreditNote) { xeroInvoice.Type = "Sales credit note"; }
                else { xeroInvoice.Type = "Sales invoice"; }

                // invoice lines
                if (invoiceList[i].InvoiceLineListIsSet)
                {
                    xeroInvoice.LineItemList = new List<Model.Import.XeroInvoiceFlatFile.LineItem>();
                    for (int j = 0; j < invoiceList[i].InvoiceLineList.Count(); j++)
                    {
                        var line = new Model.Import.XeroInvoiceFlatFile.LineItem();
                        line.AccountCode = invoiceList[i].InvoiceLineList[j].AccountCode;
                        line.Description = invoiceList[i].InvoiceLineList[j].Description;
                        line.Discount = invoiceList[i].InvoiceLineList[j].Discount;
                        line.InventoryItemCode = invoiceList[i].InvoiceLineList[j].InventoryItemCode;
                        line.LineAmount = invoiceList[i].InvoiceLineList[j].LineNetAmount;
                        line.Quantity = invoiceList[i].InvoiceLineList[j].Quantity;
                        line.TaxAmount = invoiceList[i].InvoiceLineList[j].TaxAmount;
                        line.TaxType = invoiceList[i].InvoiceLineList[j].TaxType;
                        line.UnitAmount = invoiceList[i].InvoiceLineList[j].UnitAmount;

                        xeroInvoice.LineItemList.Add(line);
                    }
                }
                xeroInvoiceList.Add(xeroInvoice);
            }
            return xeroInvoiceList;
        }

        public List<Model.Import.XeroInvoiceFlatFile> XeroInvoiceFlatFileDTO(List<Model.Import.XeroInvoiceFlatFileDTO> flatData)
        {
            if (flatData == null || !flatData.Any()) { return null; }

            // ensure flat data is in invoice number order
            var invDictionary = new Dictionary<string, int>();
            string lastUniqueString = "";
            foreach (var line in flatData)
            {
                // invoice number isn't unique, can be duplicated if one invoice is void/deleted
                string uniqueString = line.InvoiceNumber + line.Status;
                if (uniqueString != lastUniqueString)
                {
                    lastUniqueString = uniqueString;
                    if (invDictionary.ContainsKey(lastUniqueString))
                    {
                        throw new Exception("Invoices are not grouped in CSV flatfile.");
                    }
                    else
                    {
                        invDictionary.Add(lastUniqueString, 0);
                    }
                }
            }

            // create the invoice list
            var dictionaryList = new Dictionary<string, Model.Import.XeroInvoiceFlatFile>();

            for (int i = 0; i < flatData.Count(); i++)
            //foreach (var line in flatData)
            {
                string invoiceNumber = flatData[i].InvoiceNumber;

                if (!dictionaryList.ContainsKey(invoiceNumber))
                {
                    var invoice = new Model.Import.XeroInvoiceFlatFile();

                    invoice.ContactName = flatData[i].ContactName;
                    invoice.Currency = flatData[i].Currency;
                    invoice.DueDate = flatData[i].DueDate;
                    invoice.EmailAddress = flatData[i].EmailAddress;
                    invoice.InvoiceAmountDue = flatData[i].InvoiceAmountDue;
                    invoice.InvoiceAmountPaid = flatData[i].InvoiceAmountPaid;
                    invoice.InvoiceDate = flatData[i].InvoiceDate;
                    invoice.InvoiceNumber = flatData[i].InvoiceNumber;
                    invoice.PlannedDate = flatData[i].PlannedDate;
                    invoice.POAddressLine1 = flatData[i].POAddressLine1;
                    invoice.POAddressLine2 = flatData[i].POAddressLine2;
                    invoice.POAddressLine3 = flatData[i].POAddressLine3;
                    invoice.POAddressLine4 = flatData[i].POAddressLine4;
                    invoice.POCity = flatData[i].POCity;
                    invoice.POCountry = flatData[i].POCountry;
                    invoice.POPostalCode = flatData[i].POPostalCode;
                    invoice.PORegion = flatData[i].PORegion;
                    invoice.Reference = flatData[i].Reference;
                    invoice.SAAddressLine1 = flatData[i].SAAddressLine1;
                    invoice.SAAddressLine2 = flatData[i].SAAddressLine2;
                    invoice.SAAddressLine3 = flatData[i].SAAddressLine3;
                    invoice.SAAddressLine4 = flatData[i].SAAddressLine4;
                    invoice.SACity = flatData[i].SACity;
                    invoice.SACountry = flatData[i].SACountry;
                    invoice.SAPostalCode = flatData[i].SAPostalCode;
                    invoice.SARegion = flatData[i].SARegion;
                    invoice.Sent = flatData[i].Sent;
                    invoice.Status = flatData[i].Status;
                    invoice.TaxTotal = flatData[i].TaxTotal;
                    invoice.Total = flatData[i].Total;
                    invoice.Type = flatData[i].Type;

                    dictionaryList.Add(invoiceNumber, invoice);
                }

                var item = new Model.Import.XeroInvoiceFlatFile.LineItem();

                item.AccountCode = flatData[i].AccountCode;
                item.Description = flatData[i].Description;
                item.Discount = flatData[i].Discount;
                item.InventoryItemCode = flatData[i].InventoryItemCode;
                item.LineAmount = flatData[i].LineAmount;
                item.Quantity = flatData[i].Quantity;
                item.TaxAmount = flatData[i].TaxAmount;
                item.TaxType = flatData[i].TaxType;
                item.TrackingName1 = flatData[i].TrackingName1;
                item.TrackingName2 = flatData[i].TrackingName2;
                item.TrackingOption1 = flatData[i].TrackingOption1;
                item.TrackingOption2 = flatData[i].TrackingOption2;
                item.UnitAmount = flatData[i].UnitAmount;

                dictionaryList[invoiceNumber].LineItemList.Add(item);
            }

            return dictionaryList.Values.ToList();
        }
    }
}