using Avalonia.Controls;
using InABox.Avalonia.Platform;

namespace InABox.Avalonia
{
    
    public abstract class MobileDocumentSource
    {
        public abstract Task<MobileDocument> From(TopLevel window);
    }
    
    public abstract class MobileDocumentSource<TOptions> : MobileDocumentSource 
        where TOptions : class, IMobileDocumentOptions, new()
    {

        public TOptions Options { get; set; }

        protected MobileDocumentSource(TOptions options)
        {
            Options = options;
        }
        
        protected abstract Task<bool> IsEnabled();
        
        // protected async Task<bool> IsEnabled<TPermission>()
        //     where TPermission : Permissions.BasePermission, new()
        // {
        //     var status = await Permissions.CheckStatusAsync<TPermission>();
        //     if (status != PermissionStatus.Granted && status != PermissionStatus.Restricted)
        //         status = await Permissions.RequestAsync<TPermission>();
        //     return status == PermissionStatus.Granted;
        // }
        
        protected abstract Task<ImageFile?> Capture(TopLevel window);
        
        public override async Task<MobileDocument> From(TopLevel window)
        {
            var result = new MobileDocument();
            if (await IsEnabled())
            {
                try
                {
                    var file = await Capture(window);
                    if (file?.Data != null)
                    {
                        result.FileName = Path.GetFileName(file.FileName);
                        result.Data = file.Data; 
                        //file.OriginalFilename ?? file.Path);
                        //await using (var stream = await file.OpenReadAsync())
                        //{
                        //    BinaryReader br = new BinaryReader(file.Stream);
                        //    result.Data = br.ReadBytes((int)file.Stream.Length);
                        //}
                    }
                    ApplyOptions(result);
                }
                // catch (FeatureNotSupportedException fnsEx)
                // {
                //     MobileLogging.Log(fnsEx, "Capture(FNS)");
                //     MobileDialog.ShowMessage("This operation is not Supported on this Device!");
                // }
                // catch (PermissionException pEx)
                // {
                //     MobileLogging.Log(pEx, "Capture(PERM)");
                //     MobileDialog.ShowMessage("This operation is not Permitted on this Device!");
                // }
                catch (Exception ex)
                {
                    MobileLogging.Log(ex, "Capture(ERR)");
                    MobileDialog.ShowMessage($"Oops! Something went wrong!\n{ex.Message}");
                }
            }
            return result;
        }

        protected abstract void ApplyOptions(MobileDocument document);

    }
}