using IRaCIS.Core.Domain.Share;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.StaticFiles;
using Microsoft.Extensions.FileProviders;
using Microsoft.Extensions.FileProviders.Physical;
using Microsoft.Extensions.Hosting.Internal;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using Microsoft.VisualBasic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;

namespace IRaCIS.Core.API
{


    public class MultiDiskStaticFilesMiddleware
    {
        private readonly RequestDelegate _next;
        private readonly IWebHostEnvironment _hostingEnv;
        private readonly StaticFileOptions _options;
        private readonly ILoggerFactory _loggerFactory;

        public MultiDiskStaticFilesMiddleware(RequestDelegate next, IWebHostEnvironment hostingEnv, StaticFileOptions options, ILoggerFactory loggerFactory)
        {
            _next = next;
            _hostingEnv = hostingEnv;
            _options = options;
            _loggerFactory = loggerFactory;
        }

        public async Task Invoke(HttpContext context)
        {
            var path = context.Request.Path.Value;
            var isIRacisFile = path.StartsWith($"/{StaticData.Folder.IRaCISDataFolder}");

            var isDicomFile = path.Contains($"{StaticData.Folder.DicomFolder}");

            var isFind = false;
            if (isIRacisFile)
            {

            }
            if (isDicomFile)
            {

            }

           

            // 如果所有磁盘都不存在所请求的文件，则将请求传递给下一个中间件组件。
            await _next.Invoke(context);
        }

        private async Task ServeFileAsync(HttpContext context, IFileInfo fileInfo)
        {
            var response = context.Response;
            response.ContentType = GetContentType(fileInfo.PhysicalPath);

            using (var fileStream = fileInfo.CreateReadStream())
            {
                await fileStream.CopyToAsync(response.Body);
            }
        }

        private string[] GetDisks()
        {
            // 获取系统中所有可用的磁盘
            return DriveInfo.GetDrives()
                .Where(d => d.IsReady && d.DriveType == DriveType.Fixed)
                .Select(d => d.RootDirectory.FullName)
                .ToArray();
        }

        private static string GetContentType(string path)
        {
            var provider = new FileExtensionContentTypeProvider();
            if (!provider.TryGetContentType(path, out var contentType))
            {
                contentType = "application/octet-stream";
            }

            return contentType;
        }
    }


}