using System;
using System.Windows.Forms;

namespace DTS.Serialization.TDM
{
    public partial class TDMParameterDlg : Form
    {
        private readonly double _min;
        private readonly double _max;
        protected TDMParameterDlg()
        {
        }
        public TDMParameterDlg(string testName, double testStart, double testEnd)
        {
            InitializeComponent();
            DialogResult = DialogResult.Cancel;
            var di = new System.IO.DirectoryInfo(Properties.Settings1.Default.TDMFolder);
            if (!di.Exists)
            {
                di.Create();
            }
            var path = System.IO.Path.Combine(di.FullName, string.Format("{0}.csv", testName));
            tbLocation.Text = path;
            //tbStart.Text = (testStart*1000D).ToString();
            //tbStop.Text = (testEnd*1000D).ToString();
            var start = testStart * 1000D;
            var stop = testEnd * 1000D;
            _min = start;
            _max = stop;
            if (Properties.Settings1.Default.DefaultStart < start) { tbStart.Text = start.ToString(); }
            else { tbStart.Text = Properties.Settings1.Default.DefaultStart.ToString(); }

            if (Properties.Settings1.Default.DefaultStop > stop) { tbStop.Text = stop.ToString(); }
            else { tbStop.Text = Properties.Settings1.Default.DefaultStop.ToString(); }
        }

        private void btnBrowse_Click(object sender, EventArgs e)
        {
            using (var dlg = new SaveFileDialog())
            {
                dlg.Filter = "TDM CSV (*.csv)|*.csv";
                dlg.FilterIndex = 0;
                dlg.RestoreDirectory = true;
                dlg.OverwritePrompt = true;

                var fi = new System.IO.FileInfo(tbLocation.Text);
                dlg.InitialDirectory = fi.Directory.FullName;
                dlg.FileName = tbLocation.Text;

                if (DialogResult.OK == dlg.ShowDialog(this))
                {
                    tbLocation.Text = dlg.FileName;
                }
            }
        }

        private void btnOK_Click(object sender, EventArgs e)
        {
            errorProvider1.SetError(tbStart, null);
            errorProvider1.SetError(tbStop, null);
            var fi = new System.IO.FileInfo(tbLocation.Text);
            Properties.Settings1.Default.TDMFolder = fi.Directory.FullName;

            var dstart = double.MinValue;
            if (double.TryParse(tbStart.Text, out dstart))
            {
                Properties.Settings1.Default.DefaultStart = dstart;
            }
            else
            {
                errorProvider1.SetError(tbStart, "Could not parse");
                return;
            }
            var dend = double.MinValue;
            if (double.TryParse(tbStop.Text, out dend))
            {
                Properties.Settings1.Default.DefaultStop = dend;
            }
            else
            {
                errorProvider1.SetError(tbStop, "Could not parse");
                return;
            }

            if (dend < dstart) { errorProvider1.SetError(tbStart, "Start must be before end"); return; }
            if (dend > _max) { errorProvider1.SetError(tbStop, string.Format("exceeds max data in test ({0} ms)", _max)); return; }
            if (dstart < _min) { errorProvider1.SetError(tbStart, string.Format("test does not contain requested region, min start is ({0} ms)", _min)); return; }

            Properties.Settings1.Default.Save();
            DialogResult = DialogResult.OK;
            Close();
        }

        public string FileName => tbLocation.Text;

        public double Start => double.Parse(tbStart.Text) / 1000D;
        public double Stop => double.Parse(tbStop.Text) / 1000D;

        private void btnCancel_Click(object sender, EventArgs e)
        {
            DialogResult = DialogResult.Cancel;
            Close();
        }
    }
}