using System;

using System.Collections.Generic;

using System.IO;

using Microsoft.CodeAnalysis;

using Microsoft.CodeAnalysis.Emit;

using Microsoft.CodeAnalysis.MSBuild;

namespace Roslyn.TryItOut

{

    class Program

    {

        static void Main(string[] args)

        {

            string solutionUrl = "C:\\Dev\\Roslyn.TryItOut\\Roslyn.TryItOut.sln";

            string outputDir = "C:\\Dev\\Roslyn.TryItOut\\output";

            if (!Directory.Exists(outputDir))

            {

                Directory.CreateDirectory(outputDir);

            }

            bool success = CompileSolution(solutionUrl, outputDir);

            if (success)

            {

                Console.WriteLine("Compilation completed successfully.");

                Console.WriteLine("Output directory:");

                Console.WriteLine(outputDir);

            }

            else

            {

                Console.WriteLine("Compilation failed.");

            }

            Console.WriteLine("Press the any key to exit.");

            Console.ReadKey();

        }

        private static bool CompileSolution(string solutionUrl, string outputDir)

        {

            bool success = true;

            MSBuildWorkspace workspace = MSBuildWorkspace.Create();

            Solution solution = workspace.OpenSolutionAsync(solutionUrl).Result;

            ProjectDependencyGraph projectGraph = solution.GetProjectDependencyGraph();

            Dictionary<string, Stream> assemblies = new Dictionary<string, Stream>();

            foreach (ProjectId projectId in projectGraph.GetTopologicallySortedProjects())

            {

                Compilation projectCompilation = solution.GetProject(projectId).GetCompilationAsync().Result;

                if (null != projectCompilation && !string.IsNullOrEmpty(projectCompilation.AssemblyName))

                {

                    using (var stream = new MemoryStream())

                    {

                        EmitResult result = projectCompilation.Emit(stream);

                        if (result.Success)

                        {

                            string fileName = string.Format("{0}.dll", projectCompilation.AssemblyName);

                            using (FileStream file = File.Create(outputDir + '\\' + fileName))

                            {

                                stream.Seek(, SeekOrigin.Begin);

                                stream.CopyTo(file);

                            }

                        }

                        else

                        {

                            success = false;

                        }

                    }

                }

                else

                {

                    success = false;

                }

            }

            return success;

        }

    }

}