using System;
using System.Windows.Forms;
using TradeIdeas.MiscSupport;
using TradeIdeas.TIProData.Interfaces;

namespace TradeIdeas.TIProGUI
{
    /// <summary>
    /// TopListHistoricalTimeFrame class.  Enables User to view a history
    /// "snapshot" (or keep real time) for a TopList Form.
    /// </summary>
    public partial class TopListHistoricalTimeFrame : Form
    {
        private const float DEFAULT_FONT_SIZE = 8.25F;
        private FontManager _fontManager;
        private DateTime dateTimePickerVal;
        public bool isOK = false;

        /// <summary>
        /// 
        /// </summary>
        /// <param name="initialTime">
        /// This can be null.
        /// In that case we'll pick an appropriate time.
        /// </param>
        public TopListHistoricalTimeFrame(DateTime? initialTime = null)
        {
            InitializeComponent();
            _fontManager = new FontManager(this, DEFAULT_FONT_SIZE);
            _fontManager.selectTheFont();
            Font = GuiEnvironment.FontSettings;
            populateStrings();
            if (initialTime.HasValue)
            {
                try
                {
                    historyDateTimePicker.Value = initialTime.Value;
                }
                catch
                {
                    historyDateTimePicker.Value = historyDateTimePicker.MinDate;
                }
            }
            // Open window in the center of the parent
            this.StartPosition = FormStartPosition.CenterParent;
            Icon = GuiEnvironment.Icon;
        }

        public void populateStrings()
        {
            historyDateTimePicker.CustomFormat = GuiEnvironment.DateTimePickerFormat;
            /* limit the maximum and minimum dates that the user can choose (like with 'history time frame' in Alert window)..*/
            historyDateTimePicker.MaxDate = ServerFormats.Now.AddDays(1);
            IConnectionMaster connectionMaster = GuiEnvironment.FindConnectionMaster("");
            if (null != connectionMaster && null != connectionMaster.SendManager)
            {
                DateTime? oldestAlert = GuiEnvironment.GetGeneralInfo(connectionMaster.SendManager).GetOldestAlert();
                if (oldestAlert.HasValue)
                    historyDateTimePicker.MinDate = oldestAlert.Value;
                else
                    historyDateTimePicker.MinDate = historyDateTimePicker.MaxDate.AddDays(-50);
            }
            else
                historyDateTimePicker.MinDate = historyDateTimePicker.MaxDate.AddDays(-50);
        }
        public DateTime getDateTimeValue()
        {
            return dateTimePickerVal;
        }
        private void btnCancel_Click(object sender, EventArgs e)
        {
            isOK = false;
            this.Close();
        }
        private void btnOK_Click(object sender, EventArgs e)
        {
            isOK = true;
            dateTimePickerVal = historyDateTimePicker.Value;
            this.Close();
        }
    }
}