public void MakeFriends(Panda panda1, Panda panda2)
{
if (pandaFriends.ContainsKey(panda1) && pandaFriends.ContainsKey(panda2) == false)
{
AddPanda(panda2);
}
else if (pandaFriends.ContainsKey(panda1) == false && pandaFriends.ContainsKey(panda2))
{
AddPanda(panda1);
}
else if (pandaFriends.ContainsKey(panda1) == false && pandaFriends.ContainsKey(panda2) == false)
{
AddPanda(panda1);
AddPanda(panda2);
}
if (pandaFriends[panda1].Contains(panda2) == false)
{
pandaFriends[panda1].Add(panda2);
}
else
{
throw new PandaException("This panda exist");
}
if (pandaFriends[panda2].Contains(panda1) == false)
{
pandaFriends[panda2].Add(panda1);
}
else
{
throw new PandaException("Existing Panda");
}
}
public bool AreConnected(Panda panda1, Panda panda2)
{
if (!HasPanda(panda1) || !HasPanda(panda2))
{
return(false);
}
var visited = new List <Panda>();
var queue = new Queue <Panda>();
queue.Enqueue(panda1);
while (queue.Count > 0)
{
var pandaContainer = queue.Dequeue();
visited.Add(pandaContainer);
if (pandaFriends[pandaContainer].Contains(panda2))
{
return(true);
}
foreach (var neighbor in pandaFriends[pandaContainer])
{
if (!visited.Contains(neighbor))
{
queue.Enqueue(neighbor);
}
}
}
return(false);
}
public void AddPanda(Panda panda)
{
if (this.HasPanda(panda))
{
throw new PandaException.PandaAlreadyThereException("The panda is already in network!");
}
else
{
this.pandasAndFriends.Add(panda, new List<Panda>());
}
}
public void AddPanda(Panda panda)
{
if (!pandaFriends.ContainsKey(panda))
{ // not null!!!
pandaFriends.Add(panda, new List <Panda>());
}
else
{
throw new PandaException("This panda exist in the friends network");
}
}
public bool HasPanda(Panda panda)
{
if (this.pandaFriends.ContainsKey(panda))
{
return(true);
}
else
{
return(false);
}
}
public bool IsFemale(Panda panda)
{
if (panda.IsMale(panda))
{
return(false);
}
else
{
return(true);
}
}
public bool IsMale(Panda panda)
{
if (panda.Gender.Equals("Male"))
{
return(true);
}
else
{
return(false);
}
}
public bool AreFriends(Panda panda1, Panda panda2)
{
if (pandaFriends[panda1].Contains(panda2) && pandaFriends[panda2].Contains(panda1))
{
return(true);
}
else
{
return(false);
}
}
public List <Panda> FriendsOf(Panda panda)
{
if (this.HasPanda(panda))
{
return(this.pandaFriends[panda].ToList());
}
else
{
throw new PandaException("Panda not existing in the SocialNetwork");
}
}
public bool AreFriends(Panda firstPanda, Panda secondPanda)
{
if (this.HasPanda(firstPanda) && this.HasPanda(secondPanda))
{
if (this.pandasAndFriends[firstPanda].Contains(secondPanda) && this.pandasAndFriends[secondPanda].Contains(firstPanda))
{
return true;
}
}
return false;
}
public int ConnectionLevel(Panda firstPanda, Panda secondPanda)
{
if (this.HasPanda(firstPanda) && this.HasPanda(secondPanda))
{
if (AreFriends(firstPanda, secondPanda))
{
return 1;
}
else
{
List<Panda> friends = this.FriendsOf(firstPanda);
int level = 1;
while (true)
{
if (friends.Contains(secondPanda))
{
break;
}
int friendsCount = friends.Count;
for (int i = 0; i < friends.Count; i++)
{
var friendList = this.FriendsOf(friends[i]);
for (int j = 0; j < friendList.Count; j++)
{
if (!friends.Contains(friendList[j]) && !friendList[j].Equals(firstPanda))
{
friends.Add(friendList[j]);
i++;
}
}
}
if (friendsCount == friends.Count)
{
return -1;
}
level++;
}
return level;
}
}
throw new PandaException.PandaIsNotOnNetworkException();
}
public static void Main()
{
//var network = new PandaSocialNetwork();
var ivo = new Panda("Ivo", "*****@*****.**", GenderType.Male);
var rado = new Panda("Rado", "*****@*****.**", GenderType.Male);
var tony = new Panda("Tony", "*****@*****.**", GenderType.Female);
var tonyz = new Panda("Tonyz", "*****@*****.**", GenderType.Female);
// Adding pandas to network:
//network.AddPanda(ivo);
//network.AddPanda(rado);
//network.AddPanda(tony);
//network.AddPanda(tonyz);
// Make some of them to be friends:
//network.MakeFriends(ivo, rado);
//network.MakeFriends(rado, tony);
IPandaSocialNetworkStorageProvider provider = new PandaSocialNetworkStorageProvider();
IPandaSocialNetworkStorageProvider dataProvider = new PandaSocialNetworkAdoNetStorageProvider();
// provider.Save(network, "MyNetwork"); // Make save of network
// var network = provider.Load("MyNetwork"); // network is loaded from save file.
string connectionString = ConfigurationManager.ConnectionStrings["PandaSocialNetowrk"].ConnectionString;
var network = dataProvider.Load(connectionString);
// dataProvider.Save(network, connectionString); // Save network to DB
// Check some methods:
Console.WriteLine(network.ConnectionLevel(ivo, rado)); // 1
Console.WriteLine(network.ConnectionLevel(ivo, tony)); // 2
Console.WriteLine(network.ConnectionLevel(ivo, tonyz)); // -1
Console.WriteLine(network.AreConnected(ivo, tonyz));
network.MakeFriends(tony, tonyz);
foreach (var friend in network.FriendsOf(rado))
{
Console.WriteLine(friend.ToString());
}
Console.WriteLine(network.HowManyGenderInNetwork(7, rado, GenderType.Female)); // 2
}
public bool AreConnected(Panda firstPanda, Panda secondPanda)
{
if (this.HasPanda(firstPanda) && this.HasPanda(secondPanda))
{
if (this.ConnectionLevel(firstPanda, secondPanda) > 0)
{
return true;
}
else
{
return false;
}
}
throw new PandaException.PandaIsNotOnNetworkException();
}
public PandaSocialNetwork Load(string connectionString)
{
using (var connection = new SqlConnection(connectionString))
{
connection.Open();
var network = new PandaSocialNetwork();
string getAllPandas = "SELECT * FROM Panda";
SqlCommand getAllPandasSQL = new SqlCommand(getAllPandas, connection);
var reader = getAllPandasSQL.ExecuteReader();
var pandaList = new List<Panda>();
while (reader.Read())
{
var panda = new Panda((string)reader["Name"], (string)reader["Email"], (GenderType)reader["Gender"]);
panda.Id = (int)reader["Id"];
pandaList.Add(panda);
}
reader.Close();
foreach (var panda in pandaList)
{
if (!network.HasPanda(panda))
{
network.AddPanda(panda);
}
string getFiendsCommand = "SELECT pf.Friend_Id FROM PandaSocialNetowrk.dbo.PandaFriends pf JOIN PandaSocialNetowrk.dbo.Panda p ON p.Id = pf.Panda_Id WHERE pf.Panda_Id = @pandaId";
SqlCommand getFriendsSQL = new SqlCommand(getFiendsCommand, connection);
getFriendsSQL.Parameters.AddWithValue("@pandaId", panda.Id);
var idReader = getFriendsSQL.ExecuteReader();
while (idReader.Read())
{
int id = (int)idReader["Friend_Id"];
var friend = pandaList.Where(p => p.Id == id).LastOrDefault();
if (!network.AreFriends(panda,friend))
{
network.MakeFriends(panda, friend);
}
}
idReader.Close();
}
return network;
}
}
public int HowManyGenderInNetwork(int level, Panda panda, GenderType gender)
{
var visited = new List <Panda>();
var queue = new Queue <ConnectionLevelNode>();
int genderResult = 0;
queue.Enqueue(new ConnectionLevelNode()
{
Node = panda,
Level = 0
});
while (queue.Count > 0)
{
var pandaContainer = queue.Dequeue();
visited.Add(pandaContainer.Node);
if (pandaContainer.Level <= level)
{
if (pandaContainer.Node.Gender == gender)
{
genderResult = genderResult + 1;
}
}
else
{
break;
}
foreach (var neighbor in pandaFriends[pandaContainer.Node])
{
if (!visited.Contains(neighbor))
{
queue.Enqueue(new ConnectionLevelNode()
{
Node = neighbor,
Level = pandaContainer.Level + 1
});
}
}
}
return(genderResult);
}
static void Main(string[] args)
{
Panda panda1 = new Panda(name: "Peter", email: "*****@*****.**", gender: GenderType.Male);
Panda panda2 = new Panda(name: "Maria", email: "*****@*****.**", gender: GenderType.Female);
Panda panda3 = new Panda(name: "Jim", email: "*****@*****.**", gender: GenderType.Male);
Panda panda4 = new Panda(name: "Jennifer", email: "*****@*****.**", gender: GenderType.Female);
Panda panda5 = new Panda(name: "Joe", email: "*****@*****.**", gender: GenderType.Male);
Panda panda6 = new Panda(name: "Tim", email: "*****@*****.**", gender: GenderType.Male);
Panda panda7 = new Panda(name: "Bob", email: "*****@*****.**", gender: GenderType.Male);
Panda panda8 = new Panda(name: "Victoria", email: "*****@*****.**", gender: GenderType.Female);
Panda panda9 = new Panda(name: "Julie", email: "*****@*****.**", gender: GenderType.Female);
Panda panda10 = new Panda(name: "Jerry", email: "jerryhackbg.com", gender: GenderType.Male);
SocialNetwork network = new SocialNetwork();
network.AddPanda(panda1);
network.AddPanda(panda2);
network.AddPanda(panda3);
network.AddPanda(panda4);
network.AddPanda(panda5);
network.AddPanda(panda6);
network.AddPanda(panda7);
network.AddPanda(panda8);
network.AddPanda(panda9);
network.MakeFriends(panda1, panda2);
network.MakeFriends(panda1, panda3);
network.MakeFriends(panda2, panda4);
network.MakeFriends(panda2, panda5);
network.MakeFriends(panda3, panda6);
network.MakeFriends(panda3, panda7);
network.MakeFriends(panda4, panda8);
network.MakeFriends(panda4, panda9);
Console.WriteLine(network.HowManyGenderInNetwork(3, panda1, GenderType.Female));
Console.WriteLine(network.ConnectionLevel(panda1, panda9));
Console.WriteLine(network.AreFriends(panda1, panda3));
Console.WriteLine(network.AreConnected(panda2, panda10));
}
public int ConnectionLevel(Panda panda1, Panda panda2)
{
var visited = new List <Panda>();
var queue = new Queue <ConnectionLevelNode>();
queue.Enqueue(new ConnectionLevelNode()
{
Node = panda1,
Level = 0
});
while (queue.Count > 0)
{
var nodeLevel = queue.Dequeue();
visited.Add(nodeLevel.Node);
if (pandaFriends[nodeLevel.Node].Contains(panda2))
{
return(nodeLevel.Level + 1);
}
foreach (var neighbor in pandaFriends[nodeLevel.Node])
{
if (!visited.Contains(neighbor))
{
queue.Enqueue(new ConnectionLevelNode()
{
Node = neighbor,
Level = nodeLevel.Level + 1
});
}
}
}
return(-1);
}
public void TestInitialize()
{
network = new PandaSocialNetwork();
ivo = new Panda("Ivo", "*****@*****.**", GenderType.Male);
rado = new Panda("Rado", "*****@*****.**", GenderType.Male);
tony = new Panda("Tony", "*****@*****.**", GenderType.Female);
pesho = new Panda("Pesho", "*****@*****.**", GenderType.Male);
}
public void Save(PandaSocialNetwork network, string connectionString)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
connection.Open();
SqlCommand deleteCommand = new SqlCommand("DELETE FROM Panda", connection);
SqlCommand deleteFriend = new SqlCommand("DELETE FROM PandaFriends", connection);
SqlCommand reseed = new SqlCommand("DBCC CHECKIDENT (Panda, RESEED, 0)", connection);
deleteFriend.ExecuteNonQuery();
deleteCommand.ExecuteNonQuery();
reseed.ExecuteNonQuery();
string addPandaToDbCommand = "INSERT INTO Panda (Name,Email,Gender) VALUES (@name,@email,@gender)";
string addFirendCommand = "INSERT INTO PandaFriends (Panda_Id,Friend_Id) VALUES (@pandaId,@friendId)";
foreach (var panda in network.AllPandasAndFriends)
{
SqlCommand addPandaToDbSQLCommand = new SqlCommand(addPandaToDbCommand, connection);
addPandaToDbSQLCommand.Parameters.AddWithValue("@name", panda.Key.Name);
addPandaToDbSQLCommand.Parameters.AddWithValue("@email", panda.Key.Email);
addPandaToDbSQLCommand.Parameters.AddWithValue("@gender", panda.Key.Gender);
addPandaToDbSQLCommand.ExecuteNonQuery();
}
string getAllPandas = "SELECT * FROM Panda";
SqlCommand getAllPandasSQL = new SqlCommand(getAllPandas, connection);
var reader = getAllPandasSQL.ExecuteReader();
var pandaList = new List<Panda>();
while (reader.Read())
{
var panda = new Panda((string)reader["Name"], (string)reader["Email"], (GenderType)reader["Gender"]);
panda.Id = (int)reader["Id"];
pandaList.Add(panda);
}
reader.Close();
foreach (var panda in pandaList)
{
var friends = network.FriendsOf(panda);
foreach (var friend in friends)
{
foreach (var equalFriend in pandaList)
{
if (friend.Equals(equalFriend))
{
friend.Id = equalFriend.Id;
}
}
}
foreach (var friend in friends)
{
SqlCommand addFriendCommandSQL = new SqlCommand(addFirendCommand, connection);
addFriendCommandSQL.Parameters.AddWithValue("@pandaId", panda.Id);
addFriendCommandSQL.Parameters.AddWithValue("@friendId", friend.Id);
addFriendCommandSQL.ExecuteNonQuery();
}
}
}
}
public List<Panda> FriendsOf(Panda panda)
{
if (this.HasPanda(panda))
{
return this.pandasAndFriends[panda].ToList();
}
throw new PandaException.PandaIsNotOnNetworkException();
}
public bool HasPanda(Panda panda)
{
if (this.pandasAndFriends.ContainsKey(panda))
{
return true;
}
return false;
}
public int HowManyGenderInNetwork(int level, Panda panda, GenderType gender)
{
if (!this.HasPanda(panda))
{
throw new PandaException.PandaIsNotOnNetworkException();
}
List<Panda> friends = this.FriendsOf(panda);
int countLevel = 0;
int genderCount = 0;
while (true)
{
countLevel++;
int friendsCount = friends.Count;
for (int i = 0; i < friends.Count; i++)
{
var friendList = this.FriendsOf(friends[i]);
for (int j = 0; j < friendList.Count; j++)
{
if (!friends.Contains(friendList[j]) && !friendList[j].Equals(panda))
{
friends.Add(friendList[j]);
i++;
}
}
}
if (countLevel == level)
{
genderCount = friends.Where(x => x.Gender == gender).Count();
break;
}
else if (friendsCount == friends.Count)
{
genderCount = friends.Where(x => x.Gender == gender).Count();
break;
}
}
return genderCount;
}
public void MakeFriends(Panda firstPanda, Panda secondPanda)
{
if (this.AreFriends(firstPanda, secondPanda))
{
throw new PandaException.PandasAlreadyFriendsException("This pandas are already friends!");
}
if (!this.HasPanda(firstPanda))
{
this.AddPanda(firstPanda);
}
if (!this.HasPanda(secondPanda))
{
this.AddPanda(secondPanda);
}
this.pandasAndFriends[firstPanda].Add(secondPanda);
this.pandasAndFriends[secondPanda].Add(firstPanda);
}
public void CheckFriendsOfMethodWhenPandaIsNotInNetwork()
{
var panda = new Panda("Panda", "*****@*****.**", GenderType.Male);
network.FriendsOf(panda);
}