public List <TotalSalesData> ReadInTotalSystemSalesReport()
{
string fullPath = Path.Combine(filePath, reportName);
List <string> fileLines = new List <string>();
List <TotalSalesData> outputList = new List <TotalSalesData>();
if (File.Exists(fullPath))
{
try
{
using (StreamReader sr = new StreamReader(fullPath))
{
while (!sr.EndOfStream)
{
fileLines.Add(sr.ReadLine());
}
for (int i = 0; i < fileLines.Count - 2; i++)
{
string[] data = fileLines[i].Split("|");
TotalSalesData temp = new TotalSalesData(data[0], decimal.Parse(data[2]), int.Parse(data[1]));
outputList.Add(temp);
}
}
}
catch (IOException e)
{
}
}
return(outputList);
}
public void UpdateTotalSalesReport(List <Purchases> purchaseList)
{
string fullPath = Path.Combine(filePath, reportName);
decimal totalSales = 0M;
List <TotalSalesData> oldDataList = ReadInTotalSystemSalesReport();
foreach (Purchases thisPurchase in purchaseList)
{
bool existsInOldData = false;
foreach (TotalSalesData thisData in oldDataList)
{
if (thisPurchase.ItemName == thisData.Name)
{
existsInOldData = true;
thisData.TotalSoldQuantity += thisPurchase.QuantityOrdered;
thisData.TotalPurchasedRevenue += thisPurchase.TotalPurchaseCost;
}
}
if (!existsInOldData)
{
TotalSalesData temp = new TotalSalesData(thisPurchase.ItemName, thisPurchase.TotalPurchaseCost, thisPurchase.QuantityOrdered);
oldDataList.Add(temp);
}
}
foreach (TotalSalesData data in oldDataList)
{
totalSales += data.TotalPurchasedRevenue;
}
try
{
using (StreamWriter sw = new StreamWriter(fullPath, false))
{
foreach (TotalSalesData data in oldDataList)
{
sw.WriteLine(data.Name + "|" + data.TotalSoldQuantity + "|" + data.TotalPurchasedRevenue);
}
sw.WriteLine("\n**TOTAL SALES** $" + totalSales);
}
}
catch (IOException e)
{
}
}
