csharp/2881099/FreeSql.AdminLTE/FreeSql.AdminLTE.Preview/StaticFiles.cs

using Microsoft.AspNetCore.Builder;
using Microsoft.Extensions.FileProviders;
using System;
using System.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Text;

namespace FreeSql {
	static clast StaticFiles {

		public static Func WwwrootStream { get; set; } = () => typeof(StaticFiles).GetTypeInfo().astembly
			.GetManifestResourceStream("FreeSql.AdminLTE.Preview.wwwroot.zip");

		public static IApplicationBuilder UseFreeAdminLteStaticFiles(this IApplicationBuilder app, string requestPathBase) {
			if (_isStaticFiles == false) {
				lock (_isStaticFilesLock) {
					if (_isStaticFiles == false) {
						var curPath = AppDomain.CurrentDomain.BaseDirectory;
						var zipPath = $"{curPath}/{Guid.NewGuid()}.zip";
						using (var zip = WwwrootStream()) {
							using (var fs = File.Open(zipPath, FileMode.OpenOrCreate)) {
								zip.CopyTo(fs);
								fs.Close();
							}
							zip.Close();
						}
						var wwwrootPath = Path.Combine(curPath, "FreeSql.AdminLTE.wwwroot");
						if (Directory.Exists(wwwrootPath)) Directory.Delete(wwwrootPath, true);
						try {
							System.IO.Compression.ZipFile.ExtractToDirectory(zipPath, wwwrootPath, Encoding.UTF8);
						} catch (Exception ex) {
							throw new Exception($"UseFreeAdminLtePreview 错误，资源文件解压失败：{ex.Message}", ex);
						} finally {
							File.Delete(zipPath);
						}

						app.UseStaticFiles(new StaticFileOptions {
							RequestPath = requestPathBase.TrimEnd('/'),
							FileProvider = new PhysicalFileProvider(wwwrootPath)
						});

						_isStaticFiles = true;
					}
				}
			}

			return app;
		}
		static bool _isStaticFiles = false;
		static object _isStaticFilesLock = new object();
	}
}