using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using Comal.Classes;
using InABox.Clients;
using InABox.Core;
using InABox.Wpf;
using InABox.WPF;
using Syncfusion.Windows.Tools.Controls;

namespace PRSDesktop
{
    /// <summary>
    ///     Interaction logic for NotificationForm.xaml
    /// </summary>
    public partial class NotificationForm : ThemableWindow
    {
        private CoreTable Employees;
        private CoreTable Jobs;
        private CoreTable Teams;

        public NotificationForm()
        {
            InitializeComponent();
            ContentEdit.SetColor(Colors.LightYellow);
        }

        public string Subject
        {
            get => TitleEdit.Text;
            set => TitleEdit.Text = value;
        }

        public string Description
        {
            get => ContentEdit.Text;
            set => ContentEdit.Text = value;
        }

        public Guid Recipient { get; set; }
        public Guid JobID { get; set; }

        public void OnLoaded(object sender, RoutedEventArgs e)
        {
            new Client<Employee>().Query(
                LookupFactory.DefineFilter<Employee>(),
                LookupFactory.DefineColumns<Employee>(),
                LookupFactory.DefineSort<Employee>(),
                (table, exception) =>
                {
                    Employees = table;
                    Dispatcher.Invoke(() => { ReloadEmployees(Guid.Empty); });
                }
            );

            new Client<EmployeeTeam>().Query(
                null,
                null,
                new SortOrder<EmployeeTeam>(x => x.TeamLink.Name),
                (table, exception) =>
                {
                    Teams = table;
                    Dispatcher.Invoke(() => { ReloadTeams(); });
                }
            );

            new Client<Job>().Query(
                LookupFactory.DefineFilter<Job>(),
                LookupFactory.DefineColumns<Job>(),
                LookupFactory.DefineSort<Job>(),
                (table, exception) =>
                {
                    Jobs = table;
                    Dispatcher.Invoke(() => { ReloadJobs(); });
                }
            );
        }

        private void ReloadTeams()
        {
            var lookups = new Dictionary<Guid, string>
            {
                { Guid.Empty, "" }
            };
            foreach (var row in Teams.Rows)
                lookups[row.Get<EmployeeTeam, Guid>(x => x.TeamLink.ID)] = row.Get<EmployeeTeam, string>(x => x.TeamLink.Name);
            TeamCombo.ItemsSource = null;
            TeamCombo.ItemsSource = lookups;
        }

        private void ReloadEmployees(Guid teamid)
        {
            var lookups = new Dictionary<Guid, string>();
            foreach (var row in Employees.Rows)
            {
                var bInTeam = Teams == null || teamid == Guid.Empty || Teams.Rows.Any(r =>
                    r.Get<EmployeeTeam, Guid>(x => x.TeamLink.ID).Equals(teamid) &&
                    r.Get<EmployeeTeam, Guid>(x => x.EmployeeLink.ID).Equals(row.Get<Employee, Guid>(x => x.ID)));
                if (bInTeam)
                    lookups[row.Get<Employee, Guid>(x => x.ID)] = row.Get<Employee, string>(x => x.Name);
            }

            EmployeeChecks.ItemsSource = null;
            EmployeeChecks.ItemsSource = lookups;

            if (Recipient != Guid.Empty)
                foreach (KeyValuePair<Guid, string> pair in EmployeeChecks.Items)
                    if (pair.Key == Recipient)
                    {
                        EmployeeChecks.SelectedItem = pair;
                        EmployeeChecks.SelectedItems.Add(pair);
                        ReloadNames();
                        break;
                    }
        }

        private void ReloadJobs()
        {
            var lookups = new Dictionary<Guid, string> { { Guid.Empty, "(No Job Selected)" } };
            foreach (var row in Jobs.Rows)
                lookups[row.Get<Job, Guid>(x => x.ID)] =
                    string.Format("{0}: {1}", row.Get<Job, string>(x => x.JobNumber), row.Get<Job, string>(x => x.Name));
            JobDetails.ItemsSource = null;
            JobDetails.ItemsSource = lookups;

            foreach (KeyValuePair<Guid, string> pair in JobDetails.Items)
                if (pair.Key == JobID)
                {
                    JobDetails.SelectedItem = pair;
                    break;
                }
        }

        // private void CheckOKButton(object sender, EventArgs e)
        // {
        //     OK.IsEnabled = (EmployeeChecks.SelectedItems.Count > 0) && !String.IsNullOrWhiteSpace(TitleEdit.Text) && !String.IsNullOrWhiteSpace(ContentEdit.Text);
        // }

        private void CheckOKButton(object sender, SelectionChangedEventArgs e)
        {
            CheckOK(sender);
            ReloadNames();
        }

        // private void CheckOKButton(object sender, TextChangedEventArgs e)
        // {
        //     OK.IsEnabled = (EmployeeChecks.SelectedItems.Count > 0) && !String.IsNullOrWhiteSpace(TitleEdit.Text) && !String.IsNullOrWhiteSpace(ContentEdit.Text);
        // }

        private void CheckOK(object sender)
        {
            OK.IsEnabled = EmployeeChecks.SelectedItems.Count > 0 && !string.IsNullOrWhiteSpace(TitleEdit.Text) &&
                           !string.IsNullOrWhiteSpace(ContentEdit.Text);
        }

        private void EmployeeChecks_ItemChecked(object sender, ItemCheckedEventArgs e)
        {
            OK.IsEnabled = EmployeeChecks.SelectedItems.Count > 0 && !string.IsNullOrWhiteSpace(TitleEdit.Text) &&
                           !string.IsNullOrWhiteSpace(ContentEdit.Text);
            ReloadNames();
        }

        private void ReloadNames()
        {
            var names = new List<string>();
            foreach (KeyValuePair<Guid, string> pair in EmployeeChecks.SelectedItems)
                names.Add(pair.Value);
            Recipients.Text = string.Join("; ", names);
        }

        private void OK_Click(object sender, RoutedEventArgs e)
        {
            using (new WaitCursor())
            {
                var me = new Client<Employee>().Load(new Filter<Employee>(x => x.UserID).IsEqualTo(ClientFactory.UserGuid)).FirstOrDefault();
                var updates = new List<Notification>();
                foreach (KeyValuePair<Guid, string> item in EmployeeChecks.SelectedItems)
                {
                    var notification = new Notification { Title = TitleEdit.Text, Description = ContentEdit.Text };
                    notification.Sender.ID = me != null ? me.ID : Guid.Empty;
                    notification.Employee.ID = item.Key;

                    if (JobDetails.SelectedItem != null)
                    {
                        var job = (KeyValuePair<Guid, string>)JobDetails.SelectedItem;
                        notification.Job.ID = job.Key;
                    }

                    updates.Add(notification);
                }

                new Client<Notification>().Save(updates, "Sent Notification");
            }

            DialogResult = true;
            Close();
        }

        private void Cancel_Click(object sender, RoutedEventArgs e)
        {
            DialogResult = false;
            Close();
        }

        private void TeamCombo_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            var pair = (KeyValuePair<Guid, string>)TeamCombo.SelectedItem;
            ReloadEmployees(pair.Key);
        }

        private void SelectAll_Checked(object sender, RoutedEventArgs e)
        {
            EmployeeChecks.SelectedItems.Clear();
            foreach (var item in EmployeeChecks.Items)
                EmployeeChecks.SelectedItems.Add(item);
        }

        private void SelectAll_Unchecked(object sender, RoutedEventArgs e)
        {
            EmployeeChecks.SelectedItems.Clear();
        }

        private void TitleEdit_LostFocus(object sender, RoutedEventArgs e)
        {
        }

        private void LostFocus(object sender, RoutedEventArgs e)
        {
            CheckOK(sender);
        }
    }
}