using Elwig.Dialogs;
using Elwig.Helpers;
using Elwig.Helpers.Billing;
using Elwig.Helpers.Export;
using Elwig.Models.Dtos;
using Microsoft.Win32;
using System;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;

namespace Elwig.Windows {
    public partial class SeasonFinishWindow : ContextWindow {
        public SeasonFinishWindow() {
            InitializeComponent();
        }

        private void Window_Loaded(object sender, RoutedEventArgs evt) {
            SeasonInput.Value = Utils.CurrentLastSeason;
        }

        protected override async Task OnRenewContext() {
            SeasonInput_ValueChanged(null, null);
        }

        private async void SeasonInput_ValueChanged(object? sender, RoutedEventArgs? evt) {
            var s0 = await Context.Seasons.FindAsync(SeasonInput.Value);
            var s1 = await Context.Seasons.FindAsync(SeasonInput.Value + 1);
            var valid = (s0 != null);
            var last = (s1 == null);
            CalculateBucketsButton.IsEnabled = valid && last;
            DeliveryConfirmationButton.IsEnabled = valid;
            OverUnderDeliveryButton.IsEnabled = valid;
        }

        private async void CalculateBucketsButton_Click(object sender, RoutedEventArgs evt) {
            if (SeasonInput.Value is not int year)
                return;
            CalculateBucketsButton.IsEnabled = false;
            Mouse.OverrideCursor = Cursors.AppStarting;
            var b = new Billing(year);
            await b.FinishSeason();
            await b.CalculateBuckets(
                AllowAttrIntoLowerInput.IsChecked ?? false,
                AvoidUnderDeliveriesInput.IsChecked ?? false,
                HonorGebundenInput.IsChecked ?? false);
            Mouse.OverrideCursor = null;
            CalculateBucketsButton.IsEnabled = true;
        }

        private void DeliveryConfirmationButton_Click(object sender, RoutedEventArgs evt) {
            if (SeasonInput.Value is not int year)
                return;
            App.FocusDeliveryConfirmations(year);
        }

        private async void OverUnderDeliveryButton_Click(object sender, RoutedEventArgs evt) {
            if (SeasonInput.Value is not int year)
                return;
            var d = new SaveFileDialog() {
                FileName = $"Über-Unterlieferungen-{year}.ods",
                DefaultExt = "ods",
                Filter = "OpenDocument Format Spreadsheet (*.ods)|*.ods",
                Title = $"Über-/Unterlieferungen {year} speichern unter - Elwig"
            };
            if (d.ShowDialog() == false)
                return;

            Mouse.OverrideCursor = Cursors.AppStarting;
            try {
                var tbl1 = await OverUnderDeliveryData.ForSeason(Context.OverUnderDeliveryRows, year);
                var tbl2 = await AreaComUnderDeliveryData.ForSeason(Context.AreaComUnderDeliveryRows, year);
                var tbl3 = await MemberDeliveryPerVariantData.ForSeason(Context.MemberDeliveryPerVariantRows, year);
                using var ods = new OdsFile(d.FileName);
                await ods.AddTable(tbl1);
                await ods.AddTable(tbl2);
                await ods.AddTable(tbl3);
            } catch (Exception exc) {
                MessageBox.Show(exc.Message, "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
            }
            Mouse.OverrideCursor = null;
        }

        private void PaymentButton_Click(object sender, RoutedEventArgs evt) {
            var w = new ChartWindow();
            w.Show();
        }
    }
}