// Copyright (c) 2017- schick Informatik
// Description: Waste receipts bearbeiten..
//

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Windows;

using bsmd.database;
using ENI2.Controls;

namespace ENI2.EditControls
{
    /// <summary>
    /// Interaction logic for EditWasteReceiptDialog.xaml
    /// </summary>
    public partial class EditWasteReceiptDialog : EditWindowBase
    {

        // TODO: "unstatic" the templates and take care they are synchronized between controls

        private List<WasteDisposalServiceProvider_Template> _wsdpTemplates = null;
        private WasteDisposalServiceProvider_Template _currentTemplate;
        private string _undoTemplate;

        public EditWasteReceiptDialog()
        {
            InitializeComponent();
            Loaded += EditWasteReceiptDialog_Loaded;
            AddClicked += () => { /* this.comboBoxWasteCode.Focus(); */ };
        }        

        public WAS_RCPT WAS_RCPT { get; set; }

        private async void EditWasteReceiptDialog_Loaded(object sender, RoutedEventArgs e)
        {
            this.textIdentificationNumber.Text = this.WAS_RCPT.IdentificationNumber;
            this.textBoxPortReceptionFacilityName.Text = this.WAS_RCPT.PortReceptionFacilityName;
            this.textBoxPortReceptionFacilityProviderName.Text = this.WAS_RCPT.PortReceptionFacilityProviderName;
            this.textBoxTreatmentFacilityProvider.Text = this.WAS_RCPT.TreatmentFacilityProviderText;
            this.dateTimePickerWasteDeliveryDateFrom.Value = this.WAS_RCPT.WasteDeliveryDateFrom?.ToLocalTime();
            this.dateTimePickerWasteDeliveryDateTo.Value = this.WAS_RCPT.WasteDeliveryDateTo?.ToLocalTime();            

            OKClicked += EditWasteReceiptDialog_OKClicked;
            this.AddVisible = true;
            
            _wsdpTemplates = await DBManagerAsync.GetWasteDisposalServiceProviderTemplatesAsync();
            _wsdpTemplates.Sort();
            Trace.WriteLine($"{_wsdpTemplates.Count} WSDP templates loaded");
            
            this.comboBox_WSDPTemplate.ItemsSource = _wsdpTemplates;
        }
        public void CopyValuesToEntity()
        {
            // copy back           
            this.WAS_RCPT.IdentificationNumber = this.textIdentificationNumber.Text?.Trim();
            this.WAS_RCPT.PortReceptionFacilityName = this.textBoxPortReceptionFacilityName.Text?.Trim();
            this.WAS_RCPT.PortReceptionFacilityProviderName = this.textBoxPortReceptionFacilityProviderName.Text?.Trim();
            this.WAS_RCPT.TreatmentFacilityProviderText = this.textBoxTreatmentFacilityProvider.Text?.Trim();
            this.WAS_RCPT.WasteDeliveryDateFrom = this.dateTimePickerWasteDeliveryDateFrom.Value?.ToUniversalTime();
            this.WAS_RCPT.WasteDeliveryDateTo = this.dateTimePickerWasteDeliveryDateTo.Value?.ToUniversalTime();
        }

        private void EditWasteReceiptDialog_OKClicked()
        {
            this.CopyValuesToEntity();
        }

        private void comboBox_WSDPTemplate_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
        {
            Trace.WriteLine("WSDP combo selection changed");
            if (this.comboBox_WSDPTemplate.SelectedItem is WasteDisposalServiceProvider_Template wdsp_t)
            {
                this.textBoxTemplateTitle.Text = wdsp_t.Remark;
                this.buttonDeleteTemplate.IsEnabled = true;
                this._currentTemplate = wdsp_t;
                this._undoTemplate = this.textBoxPortReceptionFacilityProviderName.Text.Trim();
                this.buttonUndoTemplate.IsEnabled = this._undoTemplate.Length > 0;
                this.textBoxPortReceptionFacilityProviderName.Text = wdsp_t.WasteDisposalServiceProviderName;
            }
        }

        private async void buttonSaveTemplate_Click(object sender, RoutedEventArgs e)
        {
            string currentWSDPProviderName = this.textBoxPortReceptionFacilityProviderName.Text.Trim();
            string currentRemark = this.textBoxTemplateTitle.Text.Trim();

            if ((currentWSDPProviderName.Length == 0) || (currentRemark.Length == 0)) return;

            WasteDisposalServiceProvider_Template existingTemplate = null;
            foreach (WasteDisposalServiceProvider_Template wdsp_template in _wsdpTemplates)
            {
                // bei gefundenem Match wird ggf. der Remark überschrieben
                if (wdsp_template.Remark.Equals(currentRemark))
                {
                    existingTemplate = wdsp_template;
                    break;
                }
            }

            if (existingTemplate != null)
            {
                if (MessageBox.Show("A template with this name already exists, overwrite?", "Confirmation", MessageBoxButton.YesNo, MessageBoxImage.Question, MessageBoxResult.No) == MessageBoxResult.No)
                    return;

                existingTemplate.WasteDisposalServiceProviderName = currentWSDPProviderName;
                await DBManagerAsync.SaveAsync(existingTemplate);
                return;
            }

            WasteDisposalServiceProvider_Template newTemplate = new WasteDisposalServiceProvider_Template();
            newTemplate.WasteDisposalServiceProviderName = currentWSDPProviderName;
            newTemplate.Remark = currentRemark;
            await DBManagerAsync.SaveAsync(newTemplate);

            comboBox_WSDPTemplate.ItemsSource = null;
            _wsdpTemplates.Add(newTemplate);
            _wsdpTemplates.Sort();
            comboBox_WSDPTemplate.ItemsSource = _wsdpTemplates;
            MessageBox.Show("Template saved", "OK", MessageBoxButton.OK, MessageBoxImage.Information);
        }

        private void buttonDeleteTemplate_Click(object sender, RoutedEventArgs e)
        {
            if (_currentTemplate != null)
            {
                if (MessageBox.Show("Delete this template?", "Confirmation", MessageBoxButton.YesNo, MessageBoxImage.Question, MessageBoxResult.No) == MessageBoxResult.Yes)
                {
                    this.comboBox_WSDPTemplate.SelectedItem = null;
                    this.comboBox_WSDPTemplate.ItemsSource = null;
                    DBManager.Instance.Delete(_currentTemplate);
                    _wsdpTemplates.Remove(_currentTemplate);
                    this.textBoxTemplateTitle.Text = null;
                    this.buttonDeleteTemplate.IsEnabled = false;
                    this.comboBox_WSDPTemplate.ItemsSource = _wsdpTemplates;
                }
            }
        }

        private void buttonUndoTemplate_Click(object sender, RoutedEventArgs e)
        {
            if (this._undoTemplate != null)
            {
                this.textBoxPortReceptionFacilityProviderName.Text = this._undoTemplate;
                this.buttonUndoTemplate.IsEnabled = false;
                this._undoTemplate = null;
                this.comboBox_WSDPTemplate.SelectedItem = null;
            }
        }

    }
}