public IResponse CreateTrade()
{
string token;
if (!(Context.Information.TryGetValue("Authorization", out token)))
{
return(new TextResponse(StatusCodesEnum.Unauthorized, "Unauthorized command!"));
}
string username = Db.GetUsernameFromToken(token);
if (username == null)
{
return(new TextResponse(StatusCodesEnum.Unauthorized, "Unauthorized command!"));
}
TradeCards trade = JsonConvert.DeserializeObject <TradeCards>(Context.Payload);
string erg = Db.CreateTrade(username, trade);
if (erg == null)
{
return(new TextResponse(StatusCodesEnum.InternalServerError, "Internal database error!"));
}
if (erg.Equals("Card was not found in the users stack!"))
{
return(new TextResponse(StatusCodesEnum.NotFound, erg));
}
if (erg.Equals("Card is currently in a deck!"))
{
return(new TextResponse(StatusCodesEnum.Forbidden, erg));
}
return(new TextResponse(StatusCodesEnum.Created, erg));
}
public List <TradeCards> ShowAvailableTrades()
{
using var conn = new NpgsqlConnection(ConnectionString);
conn.Open();
var cmd = new NpgsqlCommand("Select id, username, card_id, typ, element, damage from trade", conn);
cmd.Prepare();
try
{
// ReSharper disable once PossibleNullReferenceException
var reader = cmd.ExecuteReader();
List <TradeCards> trades = new List <TradeCards>();
while (reader.Read())
{
var trade = new TradeCards();
trade.Id = (string)reader[0];
trade.Username = (string)reader[1];
trade.CardId = (string)reader[2];
trade.RequirementType = (string)reader[3];
trade.RequirementElement = (string)reader[4];
trade.RequirementDamage = (double)((decimal)reader[5]);
trades.Add(trade);
}
return(trades);
}
catch (PostgresException)
{
return(null);
}
}
public int ExecuteTrade(string username, string tradeId, string cardId)
{
using var conn = new NpgsqlConnection(ConnectionString);
conn.Open();
var tradeCardJson = new JsonCard();
var tradeRequest = new TradeCards();
//Check if trade exists
var cmd = new NpgsqlCommand("Select * from trade where id = @id", conn);
cmd.Parameters.AddWithValue("id", tradeId);
cmd.Prepare();
//Check if user owns trade
var cmd2 = new NpgsqlCommand("Select * from trade where username = @username and id = @id", conn);
cmd2.Parameters.AddWithValue("username", username);
cmd2.Parameters.AddWithValue("id", tradeId);
cmd2.Prepare();
//Check if user owns card and get card data
var cmd3 = new NpgsqlCommand("Select id, name, damage from player_cards inner join cards on player_cards.card_id = cards.id where username = @username and card_id = @card_id", conn);
cmd3.Parameters.AddWithValue("username", username);
cmd3.Parameters.AddWithValue("card_id", cardId);
cmd3.Prepare();
//Get trade data
var cmd4 = new NpgsqlCommand("Select id, username, card_id, typ, element, damage from trade where id = @id", conn);
cmd4.Parameters.AddWithValue("id", tradeId);
cmd4.Prepare();
//Check if card to be traded meets requirements
//Delete trade request
var cmd5 = new NpgsqlCommand("DELETE FROM trade where card_id = @card_id", conn);
//Update player_cards information (needs card_id from tradeRequest)
var cmd6 = new NpgsqlCommand("UPDATE player_cards SET username = @username where card_id = @card_id", conn);
cmd6.Parameters.AddWithValue("username", username);
//Update second player_cards information (needs username from tradeRequest)
var cmd7 = new NpgsqlCommand("UPDATE player_cards SET username = @username where card_id = @card_id", conn);
cmd7.Parameters.AddWithValue("card_id", cardId);
try
{
//check if Trade request exists
var reader = cmd.ExecuteReader();
if (!reader.HasRows)
{
return(-2);
}
reader.Close();
//Check if user owns trade
var reader2 = cmd2.ExecuteReader();
if (reader2.HasRows)
{
return(-3);
}
reader2.Close();
//Check if user owns card and get card data
var reader3 = cmd3.ExecuteReader();
if (!reader3.HasRows)
{
return(-4);
}
while (reader3.Read())
{
tradeCardJson.Id = (string)reader3[0];
tradeCardJson.Name = (string)reader3[1];
tradeCardJson.Damage = (double)((decimal)reader3[2]);
}
var tradeCard = tradeCardJson.ConvertToCard();
reader3.Close();
var reader4 = cmd4.ExecuteReader();
while (reader4.Read())
{
//id, username, card_id, typ, element, damage
tradeRequest.Id = (string)reader4[0];
tradeRequest.Username = (string)reader4[1];
tradeRequest.CardId = (string)reader4[2];
tradeRequest.RequirementType = (string)reader4[3];
tradeRequest.RequirementElement = (string)reader4[4];
tradeRequest.RequirementDamage = (double)((decimal)reader4[5]);
}
reader4.Close();
//Check if card to be traded meets requirements
if (tradeCard.Damage < tradeRequest.RequirementDamage)
{
return(-10);
}
if (!tradeRequest.RequirementType.Equals(""))
{
if (tradeRequest.RequirementType.ToLower().Equals("monster") && tradeCard is SpellCard)
{
return(-11);
}
if (tradeRequest.RequirementType.ToLower().Equals("spell") && tradeCard.GetType().IsSubclassOf(typeof(MonsterCard)))
{
return(-11);
}
}
if (!tradeRequest.RequirementElement.Equals(""))
{
if (tradeRequest.RequirementElement.ToLower().Equals("fire") && !(tradeCard.Element is Fire))
{
return(-12);
}
if (tradeRequest.RequirementElement.ToLower().Equals("water") && !(tradeCard.Element is Water))
{
return(-12);
}
if ((tradeRequest.RequirementElement.ToLower().Equals("normal") || tradeRequest.RequirementElement.ToLower().Equals("regular")) && !(tradeCard.Element is Normal))
{
return(-12);
}
}
cmd5.Parameters.AddWithValue("card_id", tradeRequest.CardId);
cmd5.Prepare();
if (cmd5.ExecuteNonQuery() == -1)
{
return(-13);
}
cmd6.Parameters.AddWithValue("card_id", tradeRequest.CardId);
cmd6.Prepare();
if (cmd6.ExecuteNonQuery() == -1)
{
return(-14);
}
cmd7.Parameters.AddWithValue("username", tradeRequest.Username);
cmd7.Prepare();
if (cmd7.ExecuteNonQuery() == -1)
{
return(-14);
}
return(1);
}
catch (PostgresException)
{
return(-1);
}
}
public string CreateTrade(string username, TradeCards trade)
{
using var conn = new NpgsqlConnection(ConnectionString);
conn.Open();
//Check if card is owned
var cmd = new NpgsqlCommand("Select * from player_cards where username = @username and card_id = @card_id", conn);
cmd.Parameters.AddWithValue("username", username);
cmd.Parameters.AddWithValue("card_id", trade.CardId);
cmd.Prepare();
//Check if card is in deck
var cmd2 = new NpgsqlCommand("Select * from player_deck where username = @username and card_id = @card_id", conn);
cmd2.Parameters.AddWithValue("username", username);
cmd2.Parameters.AddWithValue("card_id", trade.CardId);
cmd2.Prepare();
//Create Trade
var cmd3 = new NpgsqlCommand("INSERT INTO trade (id, username, card_id, typ, element, damage) VALUES (@id, @username, @card_id, @typ, @element, @damage)", conn);
cmd3.Parameters.AddWithValue("id", trade.Id);
cmd3.Parameters.AddWithValue("username", username);
cmd3.Parameters.AddWithValue("card_id", trade.CardId);
if (trade.RequirementType != null)
{
cmd3.Parameters.AddWithValue("typ", trade.RequirementType);
}
else
{
cmd3.Parameters.AddWithValue("typ", "");
}
if (trade.RequirementElement != null)
{
cmd3.Parameters.AddWithValue("element", trade.RequirementElement);
}
else
{
cmd3.Parameters.AddWithValue("element", "");
}
cmd3.Parameters.AddWithValue("damage", trade.RequirementDamage);
cmd3.Prepare();
try
{
var reader = cmd.ExecuteReader();
if (!reader.HasRows)
{
return("Card was not found in the users stack!");
}
reader.Close();
var reader2 = cmd2.ExecuteReader();
if (reader2.HasRows)
{
return("Card is currently in a deck!");
}
reader2.Close();
cmd3.ExecuteNonQuery();
return("Successfully created trade request!");
}
catch (PostgresException)
{
return("Internal database error!");
}
}