using System.Diagnostics;
using System.IO;
using Microsoft.UI.Xaml;
using Microsoft.UI.Xaml.Controls;
using RustTools.muqing;

namespace RustTools.WindowUI;
public sealed partial class ImportModule : WindowEx
{
    private readonly FileInfo? fileInfo;
    private readonly string ImpUrl= string.Empty;
    public ImportModule(string file)
    {
        InitializeComponent();
        ExtendsContentIntoTitleBar = true;
        if (file == string.Empty) { 
            Close();
            return;
        }
        fileInfo = new FileInfo(file);
        var iniHelper = new IniHelper();
        iniHelper.Load(IniHelper.FILE.Config);
        ImpUrl = string.Empty;
        if (file.EndsWith(".rwmod"))
        {
            var l = " | ";
            var formattedSize = FormatFileSize(fileInfo.Length);
            MessageText.Text="类型:模组"+ l+ "大小"+ formattedSize;
            ImpUrl = iniHelper.GetValue(IniHelper.CODE.Rust, IniHelper.KEY.ModFileUrl);
            InfoText.Text = string.Format("原位置 {0} --> {1} \n在处理的时候请不要关闭此窗口 导成功后会自动关闭 失败则会提示权限等错误问题",
                file,ImpUrl);
        }
        NameText.Text =
            fileInfo.Name;

        GridView.Loaded += GridView_Loaded;
        // 添加 Loaded 事件处理程序
    }

    private void GridView_Loaded(object sender, RoutedEventArgs e)
    {
        Init(ImpUrl);
    }

    private async void Init(string v)
    {
        if (fileInfo == null)
        {
            await Dialog("没有足够的权限");
            return;
        }

        if (v == string.Empty)
        {
            await Dialog("没有绑定模组路径");
        }
        else if (fileInfo.DirectoryName == v)
        {
            await Dialog("原路径与导入路径不能一致");
        }
    }
    private async Task Dialog(string content)
    {
        if (GridView.XamlRoot == null)
        {
            return;
        }
        var dialog = new ContentDialog
        {
            Title = "警告",
            Content = content,
            CloseButtonText = "关闭",
            XamlRoot = GridView.XamlRoot
        };
        dialog.CloseButtonClick += (a, b) =>
        {
            Close();
        };
        // 显示对话框
        await dialog.ShowAsync();
    }


    private static string FormatFileSize(long bytes)
    {
        return bytes switch
        {
            < 1024 => $"{bytes} B",
            < 1024 * 1024 => $"{bytes / 1024.0:F2} KB",
            < 1024 * 1024 * 1024 => $"{bytes / (1024.0 * 1024.0):F2} MB",
            _ => $"{bytes / (1024.0 * 1024.0 * 1024.0):F2} GB"
        };
    }

    private async void Button_Click(object sender, RoutedEventArgs e)
    {
        if (fileInfo == null)
        {
            return;
        }
        var button=sender as Button;
        if (button == null) { return; }

        button.IsEnabled=false;
        gj.sc(fileInfo.ToString());

        // 确保目标文件夹存在
        Directory.CreateDirectory(ImpUrl);

        var destinationZipPath = Path.Combine(ImpUrl, fileInfo.Name);

        await CopyFileWithProgressAsync( fileInfo.ToString() ,destinationZipPath, (percentage) =>
        {
            button.Content = $"{percentage:F2}%";
            Debug.WriteLine($"复制进度: {percentage:F2}%");
        });

        button.Content = "导入成功";
        await Task.Delay(1500);
        Close();
        Debug.WriteLine("文件复制完成。");
    }
    public static async Task CopyFileWithProgressAsync(string sourcePath, string destinationPath, Action<double> progressCallback)
    {
        const int bufferSize = 81920; // 80KB
        byte[] buffer = new byte[bufferSize];

        using (FileStream sourceStream = new FileStream(sourcePath, FileMode.Open, FileAccess.Read))
        {
            long totalBytes = sourceStream.Length;
            long totalBytesRead = 0;

            using (FileStream destinationStream = new FileStream(destinationPath, FileMode.Create, FileAccess.Write))
            {
                int bytesRead;
                while ((bytesRead = await sourceStream.ReadAsync(buffer, 0, buffer.Length)) > 0)
                {
                    await destinationStream.WriteAsync(buffer, 0, bytesRead);
                    totalBytesRead += bytesRead;
                    double percentage = (double)totalBytesRead / totalBytes * 100;
                    progressCallback(percentage);
                }
            }
        }
    }
}