using System;
using System.Windows.Forms;

namespace DataStreamMeter
{
    public partial class MeterSimulationDlg : Form
    {
        MeterSimulation meterSimulation;
        double currentFlow;


        public string MeterID;


        public void OnMeterdata(MeterDataEventArgs args)
        {
            if (MeterDataHandler == null) return;
            MeterDataHandler(null, args);
        }
        public event EventHandler<MeterDataEventArgs> MeterDataHandler;


        /// <summary>
        /// Default constructor with no meter
        /// </summary>
        public MeterSimulationDlg()
            : this(null, string.Empty)
        {
        }

        public MeterSimulationDlg(MeterSimulation meterSimulation, string meterID)
        {
            InitializeComponent();
            this.meterSimulation = meterSimulation;
            meterIDTextBox.Text = meterID;

            currentFlow = 0;
            flowm3phTextBox.Text = currentFlow.ToString();
            flowTrackBar.Value = Convert.ToInt32(currentFlow);

            MeterDataHandler += delegate(object sender, MeterDataEventArgs args)
            {
                if (InvokeRequired)
                {
                    Invoke(new EventHandler<MeterDataEventArgs>(DisplayMeterData), sender, args);
                }
                else
                {
                    DisplayMeterData(sender, args);
                }
            };

            if (meterSimulation != null)
            {
                timer1.Enabled = true;
                timer1.Start();
            }
        }

        private void flowTrackBar_Scroll(object sender, EventArgs e)
        {
            currentFlow = flowTrackBar.Value;
            flowm3phTextBox.Text = currentFlow.ToString("F2");
        }

        private void setFlowButton_Click(object sender, EventArgs e)
        {
            GetDblValueDlg dlg = new GetDblValueDlg("Enter flow in [m3/h] please", 0, 25.0);
            if (dlg.ShowDialog() == DialogResult.OK)
            {
                currentFlow = dlg.DblValue;
                flowm3phTextBox.Text = currentFlow.ToString();
                flowTrackBar.Value = Convert.ToInt32(currentFlow);
            }
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            lastUITickTextBox.Text = DateTime.Now.ToString("HH:mm:ss fff");
            meterSimulation.TimerTick(currentFlow);
        }

        void DisplayMeterData(object sender, MeterDataEventArgs args)
        {
            stateTextBox.Text = args.State.ToString();
            timeTextBox.Text = args.Time.ToString();
            volumeTextBox.Text = args.Volume.ToString();
            flowTextBox.Text = args.Flow.ToString();
        }
    }
}