Fuel Log Import basic functionality

Web/DAL/DataService.cs

@@ -1,8 +1,8 @@
 using System;
 using System.Collections.Generic;
-using System.Data;
 using System.Data.Entity;
 using System.Linq;
+using System.Text.RegularExpressions;
 using MileageTraker.Web.Context;
 using MileageTraker.Web.Models;
 using MileageTraker.Web.Utility;
@@ -409,6 +409,20 @@ namespace MileageTraker.Web.DAL
 			return _db.Vehicles.Find(id);
 		}
 
+		public Vehicle GetVehicleByTag(string tagNumber)
+		{
+			var vehicle = GetVehicles().FirstOrDefault(v => v.TagNumber == tagNumber);
+			if (vehicle != null)
+				return vehicle; // exact match, this is optimal for the DB query
+
+			// no match, normalize the tags, have to get all the vehicles for regex
+			var vehicles = GetVehicles().ToList();
+			Func<string, string> b = s => Regex.Replace(s.ToLower(), @"-|\s", "");
+			vehicle = vehicles.FirstOrDefault(v => b(v.TagNumber) == b(tagNumber));
+
+			return vehicle;
+		}
+
 		public void UpdateCurrentOdometer(string vehicleId)
 		{
 			var mostRecentOdometerQuery =
@@ -630,6 +644,40 @@ namespace MileageTraker.Web.DAL
 			return _db.FuelLogs.Find(id);
 		}
 
+		public IEnumerable<FuelLog> GetDuplicateFuelLogs(FuelLog log)
+		{
+			return
+				from dbLog in GetFuelLogs()
+				where
+					dbLog.Date == log.Date &&
+					dbLog.GasPurchased == log.GasPurchased &&
+					dbLog.TagNumber == log.TagNumber
+				select dbLog;
+		}
+
+		public Log GetMatchingLog(FuelLog fuelLog)
+		{
+			var logs = GetLogs();
+
+			// matching by Date, Gas Purchased (gallons), and Vehicle
+
+			var vehicle = GetVehicleByTag(fuelLog.TagNumber);
+			if (vehicle != null)
+				logs = logs.Where(log => log.VehicleId == vehicle.VehicleId);
+			else return null;
+
+			logs = logs.Where(log => 
+				log.Date.Year == fuelLog.Date.Year &&
+				log.Date.Month == fuelLog.Date.Month &&
+				log.Date.Day == fuelLog.Date.Day
+				);
+			logs = logs.Where(log => log.GasPurchased == fuelLog.GasPurchased);
+
+			//logs = logs.Where(log => log.User.FullName == fuelLog.DriverFullName);
+			//logs = logs.Where(log => log.EndOdometer == fuelLog.Odometer);
+
+			return logs.FirstOrDefault();
+		}
 
 		public IList<DateTime> GetValidFuelLogMonths()
 		{