using Microsoft.AspNetCore.Builder;
using Microsoft.Extensions.FileProviders;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace UIStandardWebApi.WebCore.StaticFiles
{
    /// <summary>
    /// 读取图片信息
    /// </summary>
    public static class ReadStaticFilesExtensions
    {
        /// <summary>
        /// 读取图片信息
        /// </summary>
        /// <param name="app"></param>
        /// <param name="directoryPath"></param>
        public static void ReadStaticFilesExt(this IApplicationBuilder app, string fileAddress)
        {
            if (string.IsNullOrWhiteSpace(fileAddress))
            {
                throw new Exception("配置保存图片的地址不存在");
            }
            if (!Directory.Exists(fileAddress))
            {
                Directory.CreateDirectory(fileAddress);
            }
            var fileProvider = new PhysicalFileProvider(fileAddress);
            var requestPath = $"/static";

            app.UseStaticFiles(new StaticFileOptions()
            {
                FileProvider = fileProvider,
                RequestPath = requestPath
            });

            //展示文件列表
            app.UseDirectoryBrowser(new DirectoryBrowserOptions
            {
                FileProvider = fileProvider,
                RequestPath = requestPath
            });
        }
    }
}