#region License Information
/* HeuristicLab
 * Copyright (C) 2002-2010 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System.Collections.Generic;
using System.IO;
using System.Text.RegularExpressions;
using System;

namespace HeuristicLab.PDPSimulation {
  class TSPLibDynPDPParser : DynPDPParser {
    public TSPLibDynPDPParser(string file)
      : base(file) {
    }

    public override void Parse() {
      string line;
      Regex reg = new Regex(@"-?(\d+\.\d+|\d+)");
      MatchCollection m;

      using (var reader = new StreamReader(file)) {

        line = reader.ReadLine();
        problemName = line.Split(':')[1].Remove(0, 1);

        line = reader.ReadLine();
        string vehicleLine = problemName = line.Split(':')[1].Remove(0, 1);
        int vehicleCount = int.Parse(vehicleLine);

        line = reader.ReadLine();
        string capacityLine = problemName = line.Split(':')[1].Remove(0, 1);
        int capacity = int.Parse(capacityLine);

        line = reader.ReadLine();
        string dueTimeLine = problemName = line.Split(':')[1].Remove(0, 1);
        int dueTime = int.Parse(dueTimeLine);

        List<int> xCoord = new List<int>();
        List<int> yCoord = new List<int>();

        line = reader.ReadLine();
        line = reader.ReadLine();
        m = reg.Matches(line);
        while (m.Count == 3) {
          xCoord.Add(int.Parse(m[1].Value, System.Globalization.CultureInfo.InvariantCulture));
          yCoord.Add(int.Parse(m[2].Value, System.Globalization.CultureInfo.InvariantCulture));

          line = reader.ReadLine();
          m = reg.Matches(line);
        }

        for (int i = 0; i < vehicleCount; i++) {
          Vehicle v = new Vehicle();

          v.xCoord = xCoord[0];
          v.yCoord = yCoord[0];
          v.capacity = capacity;
          v.readyTime = 0;
          v.dueTime = dueTime;

          vehicles.Add(v);
        }

        if (line.Contains("EDGE_WEIGHT_TYPE: EXPLICIT")) {
          line = reader.ReadLine();

          int count = xCoord.Count;

          distanceMatrix.useDistanceMatrix = true;
          distanceMatrix.coordinates = new int[count, 2];
          for (int i = 0; i < count; i++) {
            distanceMatrix.coordinates[i, 0] = xCoord[i];
            distanceMatrix.coordinates[i, 1] = yCoord[i];
          }

          distanceMatrix.matrix = new double[count, count];

          line = reader.ReadLine();
          m = reg.Matches(line);

          int j = 0;
          while (m.Count == count) {
            for (int i = 0; i < count; i++) {
              distanceMatrix.matrix[i, j] = double.Parse(m[i].Value, System.Globalization.CultureInfo.InvariantCulture);              
            }

            line = reader.ReadLine();
            m = reg.Matches(line);
            j++;
          }

          if (j != count)
            throw new Exception("Invalid distance matrix definition");
        }

        line = reader.ReadLine();
        m = reg.Matches(line);

        while (m.Count == 11) {
          Order o = new Order();

          int pickupId = int.Parse(m[1].Value, System.Globalization.CultureInfo.InvariantCulture);
          int deliveryId = int.Parse(m[2].Value, System.Globalization.CultureInfo.InvariantCulture);
          double pickupTWOpen = double.Parse(m[3].Value, System.Globalization.CultureInfo.InvariantCulture);
          double pickupTWClose = double.Parse(m[4].Value, System.Globalization.CultureInfo.InvariantCulture);
          double pickupServiceTime = double.Parse(m[5].Value, System.Globalization.CultureInfo.InvariantCulture);
          double deliveryTWOpen = double.Parse(m[6].Value, System.Globalization.CultureInfo.InvariantCulture);
          double deliveryTWClose = double.Parse(m[7].Value, System.Globalization.CultureInfo.InvariantCulture);
          double deliveryServiceTime = double.Parse(m[8].Value, System.Globalization.CultureInfo.InvariantCulture);
          double demand = double.Parse(m[9].Value, System.Globalization.CultureInfo.InvariantCulture);
          double revealed = double.Parse(m[10].Value, System.Globalization.CultureInfo.InvariantCulture);

          o.revealedTime = revealed;
          o.pickupXCoord = xCoord[pickupId];
          o.pickupYCoord = yCoord[pickupId];
          o.deliveryXCoord = xCoord[deliveryId];
          o.deliveryYCoord = yCoord[deliveryId];
          o.demand = demand;
          o.pickupServiceTime = pickupServiceTime;
          o.pickupReadyTime = pickupTWOpen;
          o.pickupDueTime = pickupTWClose;
          o.deliveryServiceTime = deliveryServiceTime;
          o.deliveryReadyTime = deliveryTWOpen;
          o.deliveryDueTime = deliveryTWClose;

          orders.Add(o);

          line = reader.ReadLine();
          m = reg.Matches(line);
        }
      }
    }
  }
}