using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using NHibernate;
using Results.Entities;
using ResultsBrowser.Filters;
using ResultsBrowser.Resources;

namespace ResultsBrowser
{
    public partial class ResultsBrowserWnd : Form
    {
        IList<Filters.IFilter> filters;

        public ResultsBrowserWnd()
        {
            InitializeComponent();
            filters = new List<Filters.IFilter>();
        }

        private void ResultsBrowserWnd_Load(object sender, EventArgs e)
        {
            Localize();
            RedrawTestBenches();

            checkBox1.Checked = true;
        }

        void RedrawTestBenches()
        {
            checkBox1.Text = Program.LocalSettings.Bench1;
            checkBox2.Text = Program.LocalSettings.Bench2;
            checkBox3.Text = Program.LocalSettings.Bench3;

            checkBox1.Visible = !string.IsNullOrEmpty(checkBox1.Text);
            checkBox2.Visible = !string.IsNullOrEmpty(checkBox2.Text);
            checkBox3.Visible = !string.IsNullOrEmpty(checkBox3.Text);
        }

        void Localize()
        {
            Text = "Results Browser";           /// or Statistics
            filtersGroupBox.Text = "Filters";
            resultsGroupBox.Text = "Query results";
            settingsBtn.Text = "Settings";
            addFilterBtn.Text = "Add filter";
            loadQueryBtn.Text = "Load query";
            saveQueryBtn.Text = "Save query";
            testBenchesGroupBox.Text = "Test benches";
            executeQueryBtn.Text = "Execute query";
        }

        private void settingsBtn_Click(object sender, EventArgs e)
        {
            if (new Forms.DatabaseSettingsDlg().ShowDialog() == DialogResult.OK)
            {
                RedrawTestBenches();
            }
        }

        private void addFilterBtn_Click(object sender, EventArgs e)
        {
            Forms.AddFilterDlg dlg = new Forms.AddFilterDlg();
            if (dlg.ShowDialog() == DialogResult.OK && dlg.SelectedFilterName != null)
            {
                Filters.IFilter filter = Factory.GetFilter(dlg.SelectedFilterName);
                filters.Add(filter);
                filtersFlowLayoutPanel.Controls.Add(filter.GetFilterUI());
            }
        }

        private void loadQueryBtn_Click(object sender, EventArgs e)
        {
			OpenFileDialog dlg = new OpenFileDialog();
			if (dlg.ShowDialog() == DialogResult.OK)
			{
				FiltersConfig filtersConfig = FiltersConfig.Load(dlg.FileName);

                filters.Clear();
				filtersFlowLayoutPanel.Controls.Clear();
                ///
				for (int i = 0; i < filtersConfig.FiltersCount; i++)
				{
                    Filters.IFilter filter = Factory.LoadFilter(filtersConfig.FilterName[i], filtersConfig.FilterData[i]);
                    filters.Add(filter);
					filtersFlowLayoutPanel.Controls.Add(filter.GetFilterUI());
				}
			}
        }

        private void saveQueryBtn_Click(object sender, EventArgs e)
        {
			StringBuilder sb = new StringBuilder();

            FiltersConfig filtersConfig = new FiltersConfig(filters.Count);

			try
			{
                for (int i = 0; i < filters.Count; i++)
				{
					filtersConfig.FilterName[i] = filters[i].GetThisFilterName();
					sb.Clear();
					filters[i].UI2Data();
					filters[i].Save(sb);
					filtersConfig.FilterData[i] = sb.ToString();
				}
			}
			catch (Exception exc)
			{
				MessageBox.Show(exc.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
				return;
			}

			SaveFileDialog dlg = new SaveFileDialog();
			if (dlg.ShowDialog() == DialogResult.OK)
			{
				filtersConfig.Save(dlg.FileName);
			}
        }

        private void checkBox1_CheckedChanged(object sender, EventArgs e)
        {

        }

        private void checkBox2_CheckedChanged(object sender, EventArgs e)
        {

        }

        private void checkBox3_CheckedChanged(object sender, EventArgs e)
        {

        }

        private void executeQueryBtn_Click(object sender, EventArgs e)
        {
            try
            {
                foreach (var filter in filters) filter.UI2Data();   /// Update filter data

                IList<WaterMeter> waterMeters = null;
                IList<WaterMeter> waterMeters2;

                Results.DB.ConnectionString = checkBox1.Checked ? Program.LocalSettings.ConnectionString1 :
                                             (checkBox2.Checked ? Program.LocalSettings.ConnectionString2 :
                                             (checkBox3.Checked ? Program.LocalSettings.ConnectionString3 :
                                                                  Program.LocalSettings.ConnectionString1));

                ISession[] sessions = new ISession[] { Results.DB.CreateSession() };

                foreach (var filter in filters)
                {
                    waterMeters2 = filter.ExecuteQuery(sessions, waterMeters);
                    waterMeters = waterMeters2;
                }

                resultsListBox.Items.Clear();

                foreach (var wm in waterMeters) resultsListBox.Items.Add(wm.ToString());
            }
            catch (Exception exc)
            {
                MessageBox.Show(exc.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                return;
            }
        }
    }
}