using System;
using System.IO;
using System.Text;
using System.Windows.Forms;
 
using Microsoft.TeamFoundation.Client; // NuGet
using Microsoft.TeamFoundation.VersionControl.Client; // GAC
 
namespace TFSHistory
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            var tpp = new TeamProjectPicker(TeamProjectPickerMode.SingleProject, true);
            var result = tpp.ShowDialog();
            if (result != DialogResult.OK) return;
 
            var tpc = tpp.SelectedTeamProjectCollection;
            var versionControl = tpc.GetService<VersionControlServer>();
 
            var tp = versionControl.GetTeamProject(tpp.SelectedProjects[0].Name);
            var path = tp.ServerItem;
 
            var q = versionControl.QueryHistory(path, VersionSpec.Latest, 0, RecursionType.Full, null, new ChangesetVersionSpec(1), VersionSpec.Latest, Int32.MaxValue, false, true, false, false);
           
            using (var file = new StreamWriter(@"fichier.csv", true, Encoding.UTF8))
            {
                file.AutoFlush = true;
                file.WriteLine("CS, Date, User, Comment");
 
                foreach (Changeset cs in q)
                {
                    if (cs.Committer.Contains("Elastic")) continue;
                    if (string.IsNullOrWhiteSpace(cs.Comment)) continue;
 
                    var comment = cs.Comment;
                    comment = comment.Replace(',', ' ');
                    comment = comment.Replace(Environment.NewLine, " ");
 
                    file.WriteLine(string.Format("{0},{1},{2},{3}", cs.ChangesetId, cs.CreationDate, cs.Committer, comment));
                }
            }
        }
    }
}