static void Main(string[] args)
{
FileStream readLogs;
using (readLogs = new FileStream(OUTPUT_FILE, FileMode.OpenOrCreate)) { };
int readCount = File.ReadLines(OUTPUT_FILE).Count();
using (readLogs = new FileStream(OUTPUT_FILE, FileMode.Append))
using (StreamWriter writer = new StreamWriter(readLogs))
{
IEnumerable<string> lines = File.ReadLines(INPUT_FILE).Skip(readCount);
List<ReceiptItem> receiptItems = new List<ReceiptItem>();
int newReceiptId = 0;
foreach (string line in lines)
{
//Search for business rule pattern
var dateMatch = Regex.Match(line, DATE_PATTERN, RegexOptions.IgnoreCase);
var purchaseItemMatch = Regex.Match(line, PURCHASE_ITEM_PATTERN, RegexOptions.IgnoreCase);
//if line contains a date and time (regex)
if (dateMatch.Success)
{
Console.WriteLine(dateMatch.Value);
// create a Receipt object
DateTime d = default(DateTime);
DateTime.TryParse(dateMatch.Value,out d);
if (d != DateTime.MinValue)
{
newReceiptId = ReceiptBLL.UpdateReceipt(new Receipt() { Date = d });
receiptItems = new List<ReceiptItem>();
}
else
{
continue; //something weird might have happened
}
}
// start processing line items (regex)
if (purchaseItemMatch.Success)
{
Console.WriteLine("{0}:{1}", purchaseItemMatch.Groups[1].Value, purchaseItemMatch.Groups[2].Value);
// create a list<ReceiptItem>
ReceiptItem item = new ReceiptItem();
item.Name = purchaseItemMatch.Groups[1].Value;
decimal cost = 0M;
decimal.TryParse(purchaseItemMatch.Groups[2].Value, out cost);
item.Cost = cost;
item.ProductName = ReceiptBLL.UpdateReceiptItem(newReceiptId, item);
receiptItems.Add(item);
}
//process as line read.
writer.WriteLine(line);
}
}
}
private static List<ReceiptItem> GetGenericReceiptItemList(DataTable dt)
{
List<ReceiptItem> list = new List<ReceiptItem>();
foreach (DataRow dr in dt.Rows)
{
ReceiptItem item = new ReceiptItem();
item.Id = Convert.ToInt32(dr["Id"]);
item.Name = dr["Name"].ToString();
list.Add(item);
}
return list;
}
//Save receipt item
public static string UpdateReceiptItem(int receiptId, ReceiptItem item)
{
string productName = string.Empty;
if (receiptId > 0)
{
productName = daReceiptItems.InsertQuery(receiptId, item.Name).ToString();
}
return productName;
}