using Elwig.Helpers;
using Elwig.Helpers.Billing;
using Microsoft.EntityFrameworkCore;
using System;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Input;

namespace Elwig.Windows {
    public partial class PaymentAdjustmentWindow : ContextWindow {

        public readonly int Year;
        public readonly bool SeasonLocked;

        public PaymentAdjustmentWindow(int year) {
            InitializeComponent();
            Year = year;
            using (var ctx = new AppDbContext()) {
                SeasonLocked = ctx.Seasons.Find(Year + 1) != null;
            }
            Title = $"Auszahlung anpassen - Lese {Year} - Elwig";
        }

        protected override async Task OnRenewContext(AppDbContext ctx) {
            MemberList.ItemsSource = await ctx.MemberHistory
                .Where(h => h.DateString.CompareTo($"{Year}-01-01") >= 0 && h.DateString.CompareTo($"{Year}-12-31") <= 0 && h.Type == "auto" && h.BusinessShares > 0)
                .GroupBy(h => h.Member)
                .Select(h => new {
                    h.Key.MgNr,
                    h.Key.FamilyName,
                    h.Key.GivenName,
                    BusinessShares = h.Sum(g => g.BusinessShares),
                })
                .OrderBy(h => h.FamilyName)
                .ThenBy(h => h.GivenName)
                .ThenBy(h => h.MgNr)
                .ToListAsync();
        }

        private async void AutoAdjustBsButton_Click(object sender, RoutedEventArgs evt) {
            Mouse.OverrideCursor = Cursors.AppStarting;
            try {
                int? kg = AllowanceKgInput.Text == "" ? null : int.Parse(AllowanceKgInput.Text);
                double? bs = AllowanceBsInput.Text == "" ? null : double.Parse(AllowanceBsInput.Text);
                int? kgPerBs = AllowanceKgPerBsInput.Text == "" ? null : int.Parse(AllowanceKgPerBsInput.Text);
                double? percent = AllowancePercentInput.Text == "" ? null : double.Parse(AllowancePercentInput.Text);
                int? minBs = MinBsInput.Text == "" ? null : int.Parse(MinBsInput.Text);

                var b = new Billing(Year);
                await b.AutoAdjustBusinessShares(new DateOnly(Year, 11, 30), kg ?? default, bs ?? default, kgPerBs ?? default, percent / 100.0 ?? default, minBs ?? default);
                await App.HintContextChange();
            } catch (Exception exc) {
                var str = "Der Eintrag konnte nicht in der Datenbank aktualisiert werden!\n\n" + exc.Message;
                if (exc.InnerException != null) str += "\n\n" + exc.InnerException.Message;
                MessageBox.Show(str, "GA Nachzeichnen", MessageBoxButton.OK, MessageBoxImage.Error);
            }
            Mouse.OverrideCursor = null;
        }

        private async void UnAdjustBsButton_Click(object sender, RoutedEventArgs evt) {
            Mouse.OverrideCursor = Cursors.AppStarting;
            try {
                var b = new Billing(Year);
                await b.UnAdjustBusinessShares();
                await App.HintContextChange();
            } catch (Exception exc) {
                var str = "Der Eintrag konnte nicht in der Datenbank aktualisiert werden!\n\n" + exc.Message;
                if (exc.InnerException != null) str += "\n\n" + exc.InnerException.Message;
                MessageBox.Show(str, "GA Nachzeichnen", MessageBoxButton.OK, MessageBoxImage.Error);
            }
            Mouse.OverrideCursor = null;
        }

        private void SeasonButton_Click(object sender, RoutedEventArgs evt) {
            App.FocusBaseDataSeason(Year);
        }

        private void KgInput_TextChanged(object sender, TextChangedEventArgs evt) {
            Validator.CheckInteger((TextBox)sender, false, 6);
        }

        private void BsInput_TextChanged(object sender, TextChangedEventArgs evt) {
            Validator.CheckInteger((TextBox)sender, false, 3);
        }

        private void PercentInput_TextChanged(object sender, TextChangedEventArgs evt) {
            Validator.CheckDecimal((TextBox)sender, false, 3, 2);
        }
    }
}