using CineBook.Models;
using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;

namespace CineBook.Views;

public partial class ScreeningEditDialog : Window
{
    public Screening? Result { get; private set; }
    private readonly List<Movie> _movies;
    private readonly Screening? _edit;

    public ScreeningEditDialog(List<Movie> movies, Screening? edit = null)
    {
        InitializeComponent();
        _movies = movies;
        _edit = edit;

        foreach (var m in movies)
            MovieBox.Items.Add(new ComboBoxItem { Content = m.Title, Tag = m.MovieID, Foreground = System.Windows.Media.Brushes.Gold, FontFamily = new System.Windows.Media.FontFamily("Courier New") });

        if (MovieBox.Items.Count > 0) MovieBox.SelectedIndex = 0;
        HallBox.SelectedIndex = 0;
        DatePicker.SelectedDate = DateTime.Today.AddDays(1);

        if (_edit != null)
        {
            Title = "Vorführung bearbeiten";
            // Film vorauswählen
            for (var i = 0; i < MovieBox.Items.Count; i++)
            {
                if (MovieBox.Items[i] is ComboBoxItem ci && (int)ci.Tag == _edit.MovieID)
                {
                    MovieBox.SelectedIndex = i;
                    break;
                }
            }

            DatePicker.SelectedDate = _edit.ScreeningDate;
            TimeBox.Text = _edit.StartTime.ToString(@"hh\:mm");

            // Hall vorauswählen
            for (var i = 0; i < HallBox.Items.Count; i++)
            {
                if (HallBox.Items[i] is ComboBoxItem hi && (hi.Content?.ToString() ?? "") == _edit.Hall)
                {
                    HallBox.SelectedIndex = i;
                    break;
                }
            }

            PriceBox.Text = _edit.PricePerSeat.ToString(System.Globalization.CultureInfo.InvariantCulture);
        }
    }

    private void SaveClick(object sender, RoutedEventArgs e)
    {
        if (MovieBox.SelectedItem is not ComboBoxItem mi) { ErrorText.Text = "⚠ Film auswählen!"; return; }
        if (DatePicker.SelectedDate == null) { ErrorText.Text = "⚠ Datum auswählen!"; return; }
        if (!TimeSpan.TryParse(TimeBox.Text, out var time)) { ErrorText.Text = "⚠ Uhrzeit ungültig (HH:MM)!"; return; }
        if (HallBox.SelectedItem is not ComboBoxItem hi) { ErrorText.Text = "⚠ Saal auswählen!"; return; }
        if (!decimal.TryParse(PriceBox.Text.Replace(',', '.'),
            System.Globalization.NumberStyles.Any,
            System.Globalization.CultureInfo.InvariantCulture, out var price) || price <= 0)
        { ErrorText.Text = "⚠ Ungültiger Preis!"; return; }

        Result = new Screening
        {
            ScreeningID = _edit?.ScreeningID ?? 0,
            MovieID = (int)mi.Tag,
            ScreeningDate = DatePicker.SelectedDate.Value,
            StartTime = time,
            Hall = hi.Content?.ToString() ?? "Saal 1",
            // Seats werden beim Anlegen im Repository automatisch erzeugt.
            // Beim Bearbeiten werden TotalSeats/AvailableSeats nicht verändert (damit Buchungen konsistent bleiben).
            TotalSeats = _edit?.TotalSeats ?? 80,
            AvailableSeats = _edit?.AvailableSeats ?? 80,
            PricePerSeat = price
        };
        DialogResult = true;
        Close();
    }

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