DataOutput.cs

using System;
using System.Collections.Generic;
using System.Text;
using Google.OrTools.ConstraintSolver;
using System.Diagnostics;
using VrpTest.Struct;

namespace VrpTest
{
    public class DataOutput : IDataOutput
    {
        public void PrintSolution(Day day,
            RoutingModel routing,
            RoutingIndexManager manager,
            Assignment solution)
        {
            PrintToConsole(day, routing, manager, solution);
            //ShowOnMap(day, routing, manager, solution);
        }

        public int PrintStatus(RoutingModel routing)
        {
            switch (routing.GetStatus())
            {
                case 0:
                    Console.WriteLine("Problem is not solved yet.");
                    return 0;            
                case 1:
                    Console.WriteLine("Problem is solved");                    
                    return 1;
                case 2:
                    Console.WriteLine("No solution found to the problem.");
                    return 2;
                case 3:
                    Console.WriteLine("Time limit reached before finding a solution.");
                    return 3;
                case 4:
                    Console.WriteLine("Model, model parameters, or flags are not valid.");
                    return 4;
                default:
                    return -1;                    
            }
            
        }

        void ShowOnMap( Day day,
            RoutingModel routing,
            RoutingIndexManager manager,
            Assignment solution)
        {
            List<List<int>> routes = new List<List<int>>();

            for (int i = 0; i < day.Vehicles.Count; ++i)
            {
                var index = routing.Start(i);
                List<int> route = new List<int>();

                while (routing.IsEnd(index) == false)
                {
                    route.Add(manager.IndexToNode((int)index));          

                    index = solution.Value(routing.NextVar(index));
                }
                route.Add(manager.IndexToNode((int)index));
                routes.Add(route);

            }




            for (int i = 0; i < routes.Count; i++)
            {
                string url = "https://www.google.com.tr/maps/dir/";
                foreach (var item in routes[i])
                {
                    url += day.Addresses[item].Replace('+',',') + "/";
                }
                //url += data.addresses[data.Depot];
                Process process = new Process();
                process.StartInfo.UseShellExecute = true;
                process.StartInfo.FileName = "chrome";
                process.StartInfo.Arguments = url;
                process.Start();

            }



        }

        public void PrintToConsole(
             Day day,
             RoutingModel routing,
             RoutingIndexManager manager,
             Assignment solution)
        {

            Console.WriteLine("Day " + day.DayNum);

            if (day.Locations.Count != 0)
            {
                // Display dropped nodes.
                string droppedNodes = "Dropped nodes:";
                for (int index = 0; index < routing.Size(); ++index)
                {
                    if (routing.IsStart(index) || routing.IsEnd(index))
                    {
                        continue;
                    }
                    if (solution.Value(routing.NextVar(index)) == index)
                    {
                        droppedNodes += " " + manager.IndexToNode(index);
                    }
                }
                Console.WriteLine("{0}", droppedNodes);
                // Inspect solution.

                for (int i = 0; i < day.Vehicles.Count; i++)
                {
                    Console.WriteLine("Route for Vehicle {0}:", i);
                    long routeDuration = 0;

                    var index = routing.Start(i);

                    while (routing.IsEnd(index) == false)
                    {
                        Console.Write("{0} -> ", manager.IndexToNode((int)index));
                        var previousIndex = index;

                        index = solution.Value(routing.NextVar(index));

                        routeDuration += routing.GetArcCostForVehicle(previousIndex, index, 0);
                    }
                    Console.WriteLine("{0}", manager.IndexToNode((int)index));
                    Console.WriteLine("Duration of the route: {0}mins", routeDuration);
                }

                Console.WriteLine("Minimum duration of the routes: {0}mins", day.MinDur);
                Console.WriteLine("Maximum duration of the routes: {0}mins", day.MaxDur);
            }
            else
            {                
                Console.WriteLine("This day is holiday.");
            }

            
            
        }

      
    }
}