using CineBook.Data;
using CineBook.Helpers;
using CineBook.Models;
using System.Windows;
using System.Windows.Controls;

namespace CineBook.Views;

public partial class MovieListView : UserControl
{
    private readonly Repository _repo;
    private Movie? _selected;

    public MovieListView(Repository repo)
    {
        InitializeComponent();
        _repo = repo;

        // Nur Admins dürfen bearbeiten/löschen
        if (!Session.IsAdmin)
        {
            BtnAdd.IsEnabled = false;
            BtnAdd.Visibility = Visibility.Collapsed;
            BtnDelete.Visibility = Visibility.Collapsed;
            BtnEdit.Visibility = Visibility.Collapsed;
        }
        LoadMovies();
    }

    private void LoadMovies()
    {
        try
        {
            MoviesGrid.ItemsSource = _repo.GetMovies();
            StatusText.Text = $"● {_repo.GetMovies().Count} Filme geladen.";
        }
        catch (System.Exception ex)
        {
            StatusText.Text = "⚠ Fehler: " + ex.Message;
        }
    }

    private void GridSelectionChanged(object sender, SelectionChangedEventArgs e)
    {
        _selected = MoviesGrid.SelectedItem as Movie;
        BtnEdit.IsEnabled = _selected != null && Session.IsAdmin;
        BtnDelete.IsEnabled = _selected != null && Session.IsAdmin;
    }

    private void SearchChanged(object sender, TextChangedEventArgs e) { }
    private void SearchClick(object sender, RoutedEventArgs e)
    {
        var term = SearchBox.Text.Trim();
        if (string.IsNullOrEmpty(term)) { LoadMovies(); return; }
        try { MoviesGrid.ItemsSource = _repo.SearchMovies(term); }
        catch (System.Exception ex) { StatusText.Text = "⚠ " + ex.Message; }
    }

    private void LoadAllClick(object sender, RoutedEventArgs e)
    {
        SearchBox.Text = "";
        LoadMovies();
    }

    private void AddClick(object sender, RoutedEventArgs e)
    {
        var dlg = new MovieEditDialog(null);
        if (dlg.ShowDialog() == true && dlg.Result != null)
        {
            try
            {
                if (_repo.CreateMovie(dlg.Result))
                    LoadMovies();
                else
                    MessageBox.Show("Fehler beim Speichern.", "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
            }
            catch (System.Exception ex)
            {
                MessageBox.Show("DB-Fehler: " + ex.Message, "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }
    }

    private void EditClick(object sender, RoutedEventArgs e)
    {
        if (_selected == null) return;
        var dlg = new MovieEditDialog(_selected);
        if (dlg.ShowDialog() == true && dlg.Result != null)
        {
            try
            {
                if (_repo.UpdateMovie(dlg.Result))
                    LoadMovies();
            }
            catch (System.Exception ex)
            {
                MessageBox.Show("DB-Fehler: " + ex.Message, "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }
    }

    private void DeleteClick(object sender, RoutedEventArgs e)
    {
        if (_selected == null) return;
        var r = MessageBox.Show($"Film \"{_selected.Title}\" wirklich löschen?", "Bestätigung",
            MessageBoxButton.YesNo, MessageBoxImage.Warning);
        if (r == MessageBoxResult.Yes)
        {
            try
            {
                _repo.DeleteMovie(_selected.MovieID);
                LoadMovies();
            }
            catch (System.Exception ex)
            {
                MessageBox.Show("DB-Fehler: " + ex.Message, "Fehler", MessageBoxButton.OK, MessageBoxImage.Error);
            }
        }
    }
}