///
/// Copyright (c) 2018 Sensus Slovensko a.s.
///
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 FluentNHibernate;
using FluentNHibernate.Cfg;
using FluentNHibernate.Cfg.Db;
using Results;
using Results.Entities;
using Statistics.Resources;
using Statistics.UserControls;
using System.Threading;
using System.Globalization;

namespace Statistics
{
    public partial class StatisticsDlg : Form
    {
        static ISessionFactory[] sessionFactories = new ISessionFactory[Program.LocalSettings.ConnectionStrings.Length];


        public StatisticsDlg()
        {
            InitializeComponent();
            
            ///ManageCheckGroupBox(timePeriodCheckBox, timePeriodGroupBox);

            for (int midId = 1; midId < Program.LocalSettings.MidNames.Length; midId++)
            {
                TabPage tp = new TabPage();
                tp.Text = Program.LocalSettings.MidNames[midId];

                MidOrWaterMetersCtrl ctrl = new MidOrWaterMetersCtrl();
                ctrl.MidId = midId;
                ctrl.ParentDlg = this;
                ctrl.Dock = DockStyle.Fill;

                tp.Controls.Add(ctrl);
                midsTabControl.TabPages.Add(tp);
            }

            radioButton1.Checked = true;
            timePeriodGroupBox.Enabled = false;
            
            Localize();
        }

        void Localize()
        {
            Text = string.Format("MID {0}", Strings.Statistics);
            //timePeriodCheckBox.Text = Strings.Time_period;
            fromLabel1.Text = Strings.From;
            toLabel1.Text = Strings.To;
            radioButton1.Text = Strings.Last_week;
            radioButton2.Text = Strings.Last_month;
            radioButton3.Text = Strings.Last_3_months;
            radioButton4.Text = Strings.From_to;
        }

        private void StatisticsDlg_Load(object sender, EventArgs e)
        {
            Statistics.LocalSettings ls = Program.LocalSettings;
            Width = (ls.MainWndWidth > 0) ? ls.MainWndWidth : 1000;
            Height = (ls.MainWndHeight > 0) ? ls.MainWndHeight : 750;
            Left = (ls.MainWndLeft != 0) ? ls.MainWndLeft : 50;
            Top = (ls.MainWndTop != 0) ? ls.MainWndTop : 50;

            switch (ls.SelectedRadioButtonNumber)
            {
                case 1: radioButton1.Checked = true; break;
                case 2: radioButton2.Checked = true; break;
                case 3: radioButton3.Checked = true; break;
                case 4: radioButton4.Checked = true; break;
            }

            for (int i = 1; i < Program.LocalSettings.MidNames.Length; i++)
            {
                (midsTabControl.TabPages[i - 1].Controls[0] as MidOrWaterMetersCtrl).Data2UI();
            }

            for (int i = 0; i < Program.LocalSettings.ConnectionStrings.Length; i++)
            {
                string connStr = Program.LocalSettings.GetConnectionString(i);

                if (!string.IsNullOrEmpty(connStr))
                {
                    try
                    {
                        sessionFactories[i] = Fluently.Configure()
                                                      .Database(MySQLConfiguration.Standard.ConnectionString(connStr))
                                                      .Mappings(m => m.FluentMappings.AddFromAssemblyOf<Results.Entities.Batch>())
                                                      .ExposeConfiguration(BuildSchema)
                                                      .BuildSessionFactory();
                    }
                    catch (Exception)
                    {
                        sessionFactories[i] = null;
                        MessageBox.Show(string.Format("Cannot open one of database of {0}", Program.LocalSettings.GetBenchName(i)), "Error", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);                
                    }
                }
            }
        }

        void BuildSchema(NHibernate.Cfg.Configuration config)
        {
            /// This NHibernate tool takes a configuration with mapping info and exports a database schema
            new NHibernate.Tool.hbm2ddl.SchemaExport(config).SetOutputFile("db_schema");
        }

        private void ManageCheckGroupBox(CheckBox chk, GroupBox grp)
        {
            /// Make sure the CheckBox isn't in the GroupBox. This will only happen the first time.
            if (chk.Parent == grp)
            {
                grp.Parent.Controls.Add(chk);                                       /// Reparent the CheckBox so it's not in the GroupBox.
                chk.Location = new Point(chk.Left + grp.Left, chk.Top + grp.Top);   /// Adjust the CheckBox's location.
                chk.BringToFront();                                                 /// Move the CheckBox to the top of the stacking order.
            }

            /// Enable or disable the GroupBox.
            grp.Enabled = chk.Checked;
        }

        //private void timePeriodCheckBox_CheckedChanged(object sender, EventArgs e)
        //{
        //    ManageCheckGroupBox(timePeriodCheckBox, timePeriodGroupBox);
        //}


        /// <summary>
        /// Called by a child form.
        /// Reads and returns results from DB required by the child form to update it's content.
        /// </summary>
        /// <param name="benchId">0-based bench Id.</param>
        /// <param name="midId">1-based MID Id.</param>
        /// <returns>Required test results</returns>
        public IList<TestRslt> UpdateRequest(int benchId, int midId)
        {
            if ((benchId < 0) || (benchId >= Program.LocalSettings.BenchNames.Length) || (sessionFactories[benchId] == null))
            {
                MessageBox.Show(string.Format("Cannot load statistics of {0}", Program.LocalSettings.GetBenchName(benchId)));
                return null;
            }

            Thread thread = new Thread(() => Application.Run(new Forms.ModelessForm()
            {
                Title = string.Empty,
                Message = Strings.searching_,
                BackgroundColor = Color.LightGreen,
                FontFamily = "Arial",
                FontSize = 14,
                FontStyle = FontStyle.Regular,
            }));
            thread.CurrentCulture = CultureInfo.CurrentCulture;
            thread.CurrentUICulture = CultureInfo.CurrentUICulture;
            thread.Start();

            DateTime from;
            DateTime to;
            GetDateRange(out from, out to);

            try
            {
                ISession session = sessionFactories[benchId].OpenSession();
                var listOfComponentsWithFlowmeter = session.QueryOver<Components>()
                                                           .Where(x => (x.Flowmeter == Program.LocalSettings.MidNames[midId]))
                                                           .List();
                IList<TestRslt> testRslts = new List<TestRslt>();
                foreach (var cmpnts in listOfComponentsWithFlowmeter)
                {
                    var listOfRslts = session.QueryOver<TestRslt>()
                                             .Where(x => ((x.EndTime >= from) && (x.EndTime <= to)))
                                             .And(x => (x.Components == cmpnts))
                                             .List();
                    foreach (var tr in listOfRslts) testRslts.Add(tr);
                }

                Forms.ModelessForm.CloseForm();
                session.Close();
                return testRslts;
            }
            catch (Exception exc)
            {
                Forms.ModelessForm.CloseForm();
                MessageBox.Show(string.Format("Error loading statistics of {0}\r\n{1}", Program.LocalSettings.GetBenchName(benchId), exc.Message));
                return null;
            }
        }

        void GetDateRange(out DateTime from, out DateTime to)
        {
            if (radioButton1.Checked)
            {
                /// Last week
                from = DateTime.Now.Date.AddDays(-7);
                to = DateTime.Now;
            }
            else if (radioButton2.Checked)
            {
                /// Last month
                from = DateTime.Now.Date.AddDays(-31);
                to = DateTime.Now;
            }
            else if (radioButton3.Checked)
            {
                /// Last 3 months
                from = DateTime.Now.Date.AddDays(-91);
                to = DateTime.Now;
            }
            else
            {
                /// From / to
                from = dateTimeFromPicker.Value.Date;
                to = dateTimeToPicker.Value.Date.AddDays(1).AddTicks(-1);
            }
        }

        private void radioButton4_CheckedChanged(object sender, EventArgs e)
        {
            timePeriodGroupBox.Enabled = radioButton4.Checked;
        }

        private void StatisticsDlg_FormClosing(object sender, FormClosingEventArgs e)
        {
            LocalSettings ls = Program.LocalSettings;

            ls.ManiWndMaximized = (WindowState == FormWindowState.Maximized);
            if (WindowState == FormWindowState.Normal)
            {
                ls.MainWndLeft = Location.X;
                ls.MainWndTop = Location.Y;
                ls.MainWndWidth = Size.Width;
                ls.MainWndHeight = Size.Height;
            }
            else
            {
                /// Maximized or minimized (when restarted, minimized window is restored as normal)
                ls.MainWndLeft = RestoreBounds.Left;
                ls.MainWndTop = RestoreBounds.Top;
                ls.MainWndWidth = RestoreBounds.Width;
                ls.MainWndHeight = RestoreBounds.Height;
            }
            
            if (radioButton1.Checked) ls.SelectedRadioButtonNumber = 1;
            else if (radioButton2.Checked) ls.SelectedRadioButtonNumber = 2;
            else if (radioButton3.Checked) ls.SelectedRadioButtonNumber = 3;
            else if (radioButton4.Checked) ls.SelectedRadioButtonNumber = 4;
            else ls.SelectedRadioButtonNumber = 0;

            for (int i = 1; i < Math.Min(Program.LocalSettings.MidNames.Length, midsTabControl.TabPages.Count + 1); i++)
            {
                if (midsTabControl.TabPages[i - 1].Controls.Count > 0 && midsTabControl.TabPages[i - 1].Controls[0] is MidOrWaterMetersCtrl)
                {
                    (midsTabControl.TabPages[i - 1].Controls[0] as MidOrWaterMetersCtrl).UI2Data();
                }
            }

            ls.Save();
        }
    }
}