Harvester implementation

Harvester.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Xml.Linq;
using WixSharp;
using WixSharp.CommonTasks;

namespace WixSharp
{

    class Harvester
    {
        private static readonly string _heat = Path.Combine(Compiler.WixLocation, "heat.exe");
        private readonly Project _project;
        private readonly string _sourceDir;
        private readonly string _targetDir;
        private readonly IList<ProjectReference> _components;


        public Harvester(Project project, string sourceDir, string targetDir)
        {
            _project = project;
            _sourceDir = sourceDir;
            _targetDir = targetDir;
            _components = new List<ProjectReference>();
            _project.WixSourceGenerated += WixSourceGenerated;
        }

        private void WixSourceGenerated(XDocument document)
        {
            var ns = XNamespace.Get("http://schemas.microsoft.com/wix/2006/wi");
            var defaultFeature = document.Descendants(ns + "Feature")
                .FirstOrDefault(x => x.Attribute("Id")?.Value == _project.DefaultFeature.Id);

            foreach (var project in _components)
            {
                if (project.Binaries)
                    defaultFeature.AddElement(
                        new XElement("ComponentGroupRef",
                            new XAttribute("Id", $"{project.Name}.Binaries")));
                if (project.Content)
                    defaultFeature.AddElement(
                        new XElement("ComponentGroupRef",
                            new XAttribute("Id", $"{project.Name}.Content")));
                if (project.Satellites)
                    defaultFeature.AddElement(
                        new XElement("ComponentGroupRef",
                            new XAttribute("Id", $"{project.Name}.Satellites")));
            }
        }

        public void AddProjects(IEnumerable<ProjectReference> projects)
        {
            foreach (ProjectReference p in projects)
                AddProject(p);
        }

        public void AddProject(ProjectReference project)
        {
            var sourceDir = project.SourceDir ?? _sourceDir;
            var targetDir = project.TargetDir ?? _targetDir;
            if (!System.IO.File.Exists(project.ProjectPath))
                throw new Exception($"Project '{project.ProjectPath}' not found.");


            var output = Path.Combine(_project.OutDir, Path.ChangeExtension(Path.GetFileName(project.ProjectPath), "wxs"));
            var projectDir = Path.GetDirectoryName(project.ProjectPath);

            var args = new[] {
                $"project {project.ProjectPath}",
                project.Binaries ? "-pog Binaries" : "",
                project.Content ? "-pog Content" : "",
                project.Satellites ? "-pog Satellites" : "",
                "-ag","-sfrag",
                $"-directoryid {targetDir}",
                "-template fragment",
                $"-platform AnyCPU",
                $"-projectname {project.Name}",
                $"-out {output}" };

            var pi = new ProcessStartInfo
            {
                FileName = _heat,
                Arguments = string.Join(" ", args),
                CreateNoWindow = true,
                UseShellExecute = false,
                RedirectStandardOutput = true
            };

            using (var p = Process.Start(pi))
            {
                p.WaitForExit();
                if (p.ExitCode != 0)
                    throw new Exception(p.StandardOutput.ReadToEnd());
            }

            var xml = XDocument.Load(output);
            foreach (var fragment in xml.Root.Elements())
                _project.AddXml("Wix", fragment.ToString());

            _project.CandleOptions +=
                $" -d\"{project.Name}.TargetDir\"={sourceDir} " + //As intended the TargetDir for candle is the sourceDir
                $" -d\"{project.Name}.ProjectDir\"={projectDir} ";
            _components.Add(project);

            if (!Compiler.PreserveTempFiles)
                System.IO.File.Delete(output);
        }
    }
}

Program.cs

var project = new ManagedProject(...);

var projectRefs = new[] {
                new ProjectReference(@"path\to\project1.csproj"),
                new ProjectReference(@"path\to\project2.csproj") };

var harvester = new Harvester(project, @"..\bin", "INSTALLDIR");
harvester.AddProjects(projectRefs);

ProjectReference.cs

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

namespace WixSharp
{
    public class ProjectReference
    {
        public string Name { get;  }

        public string SourceDir { get; set; }

        public string TargetDir { get; set; }

        public string ProjectPath { get; }

        public bool Binaries { get; set; } = true;

        public bool Content { get; set; } = true;

        public bool Satellites { get; set; } = true;


        public ProjectReference(string projectPath)
        {
            ProjectPath = projectPath;
            Name = Path.GetFileNameWithoutExtension(projectPath);
        }
    }
}

@GilesBathgate have you managed to run Harvester with project.InstallScope = InstallScope.perUser; and installing to %LocalAppData%? on our project wxs validation fails with ICE38 and ICE64 errors for every file..

I believe something similar to this Harvester was added to wix# 1.12.0 I think the method is project.AddVsProjectOutput

@GilesBathgate thanks, got it all sorted!