public void StartFriendship(int userId, int friendId)
{
using (DbContextTransaction transaction = dbContext.Database.BeginTransaction())
{
try
{
FriendshipType commonType = dbContext.FriendshipTypes
.Where(ft => ft.TypeOwnerId == userId && ft.Title == "common").First();
Friendship friendship = new Friendship()
{
UserId = userId,
FriendId = friendId,
TypeId = commonType.Id
};
dbContext.Friendships.Add(friendship);
dbContext.SaveChanges();
Friendship reverseFriendship = ReverseFriendship(friendship);
dbContext.Friendships.Add(reverseFriendship);
dbContext.SaveChanges();
DeleteRequest(friendId, userId);
transaction.Commit();
}
catch
{
transaction.Rollback();
throw;
}
}
}
public FriendshipType FindFriendshipType(int commonOwnerId, string title)
{
FriendshipType type = dbContext.FriendshipTypes.Where(ft => ft.TypeOwnerId == commonOwnerId && ft.Title == title)
.First();
return(type);
}
public void AddFriendshipType(string typeTitle, int ownerId)
{
FriendshipType type = new FriendshipType()
{
Title = typeTitle,
TypeOwnerId = ownerId
};
dbContext.FriendshipTypes.Add(type);
dbContext.SaveChanges();
}
private Friendship ReverseFriendship(Friendship friendship)
{
FriendshipType commonType = FindFriendshipType(friendship.FriendId, "common");
Friendship reverseFriendship = new Friendship()
{
UserId = friendship.FriendId,
FriendId = friendship.UserId,
TypeId = commonType.Id
};
return(reverseFriendship);
}
public void AddUser(User user)
{
using (DbContextTransaction transaction = dbContext.Database.BeginTransaction())
{
try
{
User addedUser = dbContext.Users.Add(user);
dbContext.SaveChanges();
int mainWallTypeId = dbContext.WallTypes.Where(wt => wt.Title == WallTypes.Main.ToString()).First()
.Id;
int photoWallTypeId = dbContext.WallTypes.Where(wt => wt.Title == WallTypes.Photo.ToString())
.First().Id;
Wall mainWall = new Wall()
{
OwnerId = addedUser.Id,
WallTypeId = mainWallTypeId,
Title = WallTypes.Main.ToString()
};
Wall avatarsWall = new Wall()
{
OwnerId = addedUser.Id,
WallTypeId = photoWallTypeId,
Title = "Avatars"
};
FriendshipType commonFriendship = new FriendshipType()
{
Title = "common",
TypeOwnerId = addedUser.Id
};
dbContext.FriendshipTypes.Add(commonFriendship);
dbContext.Walls.Add(mainWall);
dbContext.Walls.Add(avatarsWall);
dbContext.SaveChanges();
transaction.Commit();
}
catch
{
transaction.Rollback();
throw;
}
}
}
