reverted back to up/downvotes, configured log4net a little more

Src/VideoGameQuotes.Api/CannotVoteTwiceException.cs

@@ -0,0 +1,7 @@
+using System;
+
+namespace VideoGameQuotes.Api {
+	public class CannotVoteTwiceException : Exception {
+		public CannotVoteTwiceException(string message = null, Exception innerException = null) : base(message, innerException) { }
+	}
+}

Src/VideoGameQuotes.Api/Quote.cs

@@ -23,22 +23,24 @@ namespace VideoGameQuotes.Api {
 		public virtual IEnumerable<Vote> Votes { get { return votes; } }
 		public virtual IEnumerable<QuoteFlag> Flags { get { return flags; } }
 
-		public virtual void VoteFor(User user, int value) {
+		public virtual void VoteFor(User user, VoteDirection direction) {
 			var currentVote = votes.SingleOrDefault(vote => vote.Voter == user);
 			if (currentVote != null) {
+				if (currentVote.Direction == direction) {
+					throw new CannotVoteTwiceException();
+				}
+
 				votes.Remove(currentVote);
-				currentVote.Value = value;
+				currentVote.Direction = direction;
-				currentVote.Modified = DateTime.UtcNow;
+				currentVote.Created = DateTime.UtcNow;
 				votes.Add(currentVote);
 			} else {
-				votes.Add(new Vote { Value = value, Quote = this, Voter = user });
+				votes.Add(new Vote { Direction = direction, Quote = this, Voter = user });
-			}
 			}
 		}
 
-	public static class QuoteExtensions {
+		public virtual int UpVotes { get { return Votes.Count(vote => vote.Direction == VoteDirection.Up); } }
-		public static int GetTotalPoints(this Quote quote) {
+		public virtual int DownVotes { get { return Votes.Count(vote => vote.Direction == VoteDirection.Down); } }
-			return quote.Votes.Sum(vote => (int)vote);
+		public virtual int NetVotes { get { return Votes.Sum(vote => (int)vote); } }
-		}
 	}
 }

Src/VideoGameQuotes.Api/VideoGameQuotes.Api.csproj

@@ -64,6 +64,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="CannotVoteTwiceException.cs" />
     <Compile Include="Game.cs" />
     <Compile Include="ICurrentUserProvider.cs" />
     <Compile Include="Persistence\IUserRepository.cs" />
@@ -78,6 +79,7 @@
     <Compile Include="User.cs" />
     <Compile Include="UserGroup.cs" />
     <Compile Include="Vote.cs" />
+    <Compile Include="VoteDirection.cs" />
   </ItemGroup>
   <ItemGroup>
     <EmbeddedResource Include="Mappings\User.hbm.xml" />

Src/VideoGameQuotes.Api/Vote.cs

@@ -3,18 +3,13 @@ using Portoa.Persistence;
 
 namespace VideoGameQuotes.Api {
 	public class Vote : Entity<Vote, int> {
-		public Vote() {
-			Created = DateTime.UtcNow;
-		}
-
 		public virtual User Voter { get; set; }
 		public virtual Quote Quote { get; set; }
 		public virtual DateTime Created { get; set; }
-		public virtual DateTime? Modified { get; set; }
+		public virtual VoteDirection Direction { get; set; }
-		public virtual int Value { get; set; }
 
 		public static explicit operator int(Vote vote) {
-			return vote.Value;
+			return vote.Direction == VoteDirection.Up ? 1 : -1;
 		}
 	}
 }

Src/VideoGameQuotes.Api/VoteDirection.cs

@@ -0,0 +1,6 @@
+namespace VideoGameQuotes.Api {
+	public enum VoteDirection {
+		Up = 1,
+		Down = 0
+	}
+}

Src/VideoGameQuotes.Web/Global.asax.cs

@@ -13,7 +13,8 @@ namespace VideoGameQuotes.Web {
 			Container
 				.AddNewExtension<ConfigureLog4Net>()
 				.Configure<ILog4NetConfigurator>()
-				.SetName("VideoGameQuotes.Web");
+				.SetName("VideoGameQuotes.Web")
+				.UseXml();
 				
 			Container
 				.AddNewExtension<LogAllMethodCalls>()

Tests/VideoGameQuotes.Api.Tests/QuoteTests.cs

@@ -3,16 +3,34 @@
 namespace VideoGameQuotes.Api.Tests {
 	[TestFixture]
 	public class QuoteTests {
+
 		[Test]
-		public void Should_remove_old_vote_if_voting_for_same_quote() {
+		[ExpectedException(typeof(CannotVoteTwiceException))]
+		public void Should_not_allow_voting_in_the_same_direction_twice() {
 			var quote = new Quote();
 			var user = new User();
 
-			quote.VoteFor(user, 5);
+			quote.VoteFor(user, VoteDirection.Up);
-			Assert.That(quote.GetTotalPoints(), Is.EqualTo(5));
+			quote.VoteFor(user, VoteDirection.Up);
+		}
+
+		[Test]
+		public void Should_remove_old_vote_if_voting_in_opposite_direction() {
+			var quote = new Quote();
+			var user = new User();
+
+			quote.VoteFor(user, VoteDirection.Up);
+
+			Assert.That(quote.UpVotes, Is.EqualTo(1));
+			Assert.That(quote.DownVotes, Is.EqualTo(0));
+			Assert.That(quote.NetVotes, Is.EqualTo(1));
+
+			quote.VoteFor(user, VoteDirection.Down);
+
+			Assert.That(quote.UpVotes, Is.EqualTo(0));
+			Assert.That(quote.DownVotes, Is.EqualTo(1));
+			Assert.That(quote.NetVotes, Is.EqualTo(-1));
+		}
 
-			quote.VoteFor(user, 7);
-			Assert.That(quote.GetTotalPoints(), Is.EqualTo(7));
-		}
 	}
 }