using System;
using System.Linq;
using System.Threading.Tasks;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Input;
using Avalonia.Input.Platform;
using Avalonia.Interactivity;
using Avalonia.Platform.Storage;
using Finder2eFoundryConverterCS.ViewModels;

namespace Finder2eFoundryConverterCS.Views
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            AddHandler(DragDrop.DropEvent, Drop);
            KeyDown += OnKeyDown;
        }

        private async void OnKeyDown(object? sender, KeyEventArgs e)
        {
            if (e.Key == Key.V && e.KeyModifiers == KeyModifiers.Control)
            {
                var topLevel = GetTopLevel(this);
                if (topLevel?.Clipboard == null) return;

                var vm = DataContext as MainWindowViewModel;
                if (vm == null) return;

                // Try to get text (for file paths)
                var text = await topLevel.Clipboard.TryGetTextAsync();
                if (!string.IsNullOrWhiteSpace(text))
                {
                    var path = text.Replace("file://", "").Trim();
                    if (System.IO.File.Exists(path))
                    {
                        var ext = System.IO.Path.GetExtension(path).ToLower();
                        if (new[] { ".png", ".jpg", ".jpeg", ".webp" }.Contains(ext))
                        {
                            vm.AddImagePathCommand.Execute(path);
                            return;
                        }
                    }
                }

                // Try to get bitmap directly
                var bitmap = await topLevel.Clipboard.TryGetBitmapAsync();
                if (bitmap != null)
                {
                    // Save bitmap to temp file
                    var tempDir = System.IO.Path.Combine(System.IO.Path.GetTempPath(), "Finder2eFoundryConverter");
                    if (!System.IO.Directory.Exists(tempDir)) System.IO.Directory.CreateDirectory(tempDir);

                    var tempPath = System.IO.Path.Combine(tempDir, $"pasted_image_{DateTime.Now.Ticks}.png");
                    bitmap.Save(tempPath);
                    vm.AddImagePathCommand.Execute(tempPath);
                }
            }
        }


        private async void SelectImage_Click(object? sender, RoutedEventArgs e)
        {
            var topLevel = GetTopLevel(this);
            if (topLevel == null) return;

            var files = await topLevel.StorageProvider.OpenFilePickerAsync(new FilePickerOpenOptions
            {
                Title = "Select Images",
                AllowMultiple = true,
                FileTypeFilter = new[]
                {
                    new FilePickerFileType("Images")
                    {
                        Patterns = new[] { "*.png", "*.jpg", "*.jpeg", "*.webp" }
                    }
                }
            });

            if (files.Count > 0)
            {
                var vm = DataContext as MainWindowViewModel;
                if (vm == null) return;

                foreach (var file in files)
                {
                    vm.AddImagePathCommand.Execute(file.Path.LocalPath);
                }
            }
        }

        private async void Drop(object? sender, DragEventArgs e)
        {
            var files = e.DataTransfer.TryGetFiles();
            if (files != null)
            {
                var vm = DataContext as MainWindowViewModel;
                if (vm == null) return;

                foreach (var file in files)
                {
                    var path = file.Path.LocalPath;
                    if (path == null) continue;

                    var ext = System.IO.Path.GetExtension(path).ToLower();
                    if (new[] { ".png", ".jpg", ".jpeg", ".webp" }.Contains(ext))
                    {
                        vm.AddImagePathCommand.Execute(path);
                    }
                }
            }

            // Try to get bitmap directly from drop
            var bitmap = e.DataTransfer.TryGetBitmap();
            if (bitmap != null)
            {
                var vm = DataContext as MainWindowViewModel;
                if (vm != null)
                {
                    var tempDir = System.IO.Path.Combine(System.IO.Path.GetTempPath(), "Finder2eFoundryConverter");
                    if (!System.IO.Directory.Exists(tempDir)) System.IO.Directory.CreateDirectory(tempDir);

                    var tempPath = System.IO.Path.Combine(tempDir, $"dropped_image_{DateTime.Now.Ticks}.png");
                    bitmap.Save(tempPath);
                    vm.AddImagePathCommand.Execute(tempPath);
                }
            }
        }

    }
}