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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
namespace BCDD
{
class ParScoreInvalidException : FieldNotFoundException
{
public ParScoreInvalidException() : base() { }
public ParScoreInvalidException(String msg) : base(msg) { }
}
class ParScore
{
private PBNBoard board;
private static Regex pbnContractPattern = new Regex(@"(\d)([CDHSN])(X?)\s+([NESW])");
private static Regex pbnScorePattern = new Regex(@"(NS|EW)\s+(-?\d})");
private static Regex jfrContractPattern = new Regex(@"^(\d)([CDHSN])(D?)([NESW])(-?\d+)$");
public ParScore(PBNBoard board)
{
this.board = board;
}
public ParContract GetPBNParContract()
{
String contractField = this.board.GetOptimumResult();
if ("Pass".Equals(contractField))
{
return new ParContract();
}
Match contractMatch = ParScore.pbnContractPattern.Match(contractField);
if (!contractMatch.Success)
{
throw new ParScoreInvalidException("Invalid format for OptimumResult field: " + contractField);
}
String scoreField = this.board.GetOptimumScore();
Match scoreMatch = ParScore.pbnScorePattern.Match(scoreField);
if (!scoreMatch.Success)
{
throw new ParScoreInvalidException("Invalid format for OptimumScore field: " + scoreField);
}
int score = Int16.Parse(scoreMatch.Groups[2].Value);
if ("EW".Equals(scoreMatch.Groups[1].Value))
{
score = -score;
}
ParContract contract = new ParContract(Int16.Parse(contractMatch.Groups[1].Value),
contractMatch.Groups[2].Value[0],
contractMatch.Groups[4].Value[0],
"X".Equals(contractMatch.Groups[3].Value),
score);
return contract.Validate();
}
public ParContract GetJFRParContract()
{
String parString = this.board.GetMinimax();
Match parMatch = ParScore.jfrContractPattern.Match(parString);
if (!parMatch.Success)
{
throw new ParScoreInvalidException("Invalid format for Minimax field: " + parString);
}
if ("0".Equals(parMatch.Groups[4].Value))
{
return new ParContract(); // pass-out
}
ParContract contract = new ParContract(Int16.Parse(parMatch.Groups[1].Value),
parMatch.Groups[2].Value[0],
parMatch.Groups[4].Value[0],
"D".Equals(parMatch.Groups[3].Value),
Int16.Parse(parMatch.Groups[5].Value));
return contract.Validate();
}
private bool determineVulnerability(String vulnerability, char declarer)
{
vulnerability = vulnerability.ToUpper();
return "ALL".Equals(vulnerability) || "BOTH".Equals(vulnerability)
|| (!"LOVE".Equals(vulnerability) && !"NONE".Equals(vulnerability) && vulnerability.Contains(declarer));
}
private ParContract getHighestMakeableContract(int[,] ddTable, bool forNS = true, bool forEW = true)
{
ParContract contract = new ParContract();
int tricks = 0;
for (int i = 0; i < 4; i++)
{
if ((i % 2 == 0 && forNS)
|| (i % 2 == 1 && forEW))
{
for (int j = 0; j < 5; j++)
{
int level = ddTable[i, j] - 6;
if (level >= contract.Level)
{
contract.Level = level;
contract.Denomination = BCalcWrapper.DENOMINATIONS[j];
contract.Declarer = BCalcWrapper.PLAYERS[i];
tricks = ddTable[i, j];
}
}
}
}
String vulnerability = this.board.GetVulnerable().ToUpper();
bool vulnerable = this.determineVulnerability(vulnerability, contract.Declarer);
contract.Score = contract.CalculateScore(tricks, vulnerable);
return contract;
}
public ParContract GetDDTableParContract(int[,] ddTable)
{
String dealer = this.board.GetDealer();
String vulnerability = this.board.GetVulnerable().ToUpper();
ParContract nsHighest = this.getHighestMakeableContract(ddTable, true, false);
ParContract ewHighest = this.getHighestMakeableContract(ddTable, false, true);
bool nsPlaying = ("N".Equals(dealer) || "S".Equals(dealer));
if (nsHighest == ewHighest)
{
return nsPlaying ? nsHighest.Validate() : ewHighest.Validate();
}
bool defenseVulnerability = this.determineVulnerability(vulnerability, nsPlaying ? 'E' : 'N');
ParContract highest = nsHighest.Higher(ewHighest) ? nsHighest : ewHighest;
ParContract highestDefense = highest.GetDefense(ddTable, defenseVulnerability);
if (highestDefense != null)
{
return highestDefense.Validate();
}
int denominationIndex = Array.IndexOf(BCalcWrapper.DENOMINATIONS, highest.Denomination);
int declarerIndex = Array.IndexOf(BCalcWrapper.PLAYERS, highest.Declarer);
List<int> playerIndexes = new List<int>();
playerIndexes.Add(declarerIndex);
playerIndexes.Add((declarerIndex + 2) & 3);
bool vulnerable = this.determineVulnerability(vulnerability, highest.Declarer);
int scoreSquared = highest.Score * highest.Score;
List<ParContract> possibleOptimums = new List<ParContract>();
for (int i = 0; i < 5; i++)
{
foreach (int player in playerIndexes)
{
int level = highest.Level;
if (i > denominationIndex)
{
level--;
}
while (level > 0)
{
ParContract contract = new ParContract(level, BCalcWrapper.DENOMINATIONS[i], BCalcWrapper.PLAYERS[player], false, 0);
contract.Score = contract.CalculateScore(ddTable[player, i], vulnerable);
if (scoreSquared < contract.Score * highest.Score)
{
possibleOptimums.Add(contract.GetDefense(ddTable, defenseVulnerability) ?? contract);
}
else
{
break;
}
level--;
}
}
}
foreach (ParContract contract in possibleOptimums)
{
if (Math.Abs(contract.Score) > Math.Abs(highest.Score) || (contract.Score == highest.Score && contract.Higher(highest)))
{
highest = contract;
}
}
return highest.Validate();
}
public ParContract GetParContract(int[,] ddTable)
{
try
{
return this.GetJFRParContract();
}
catch (FieldNotFoundException)
{
try
{
return this.GetPBNParContract();
}
catch (FieldNotFoundException)
{
return this.GetDDTableParContract(ddTable);
}
}
}
}
}
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