using Microsoft.Ajax.Utilities;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using PuppeteerSharp;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Web.Configuration;
using System.Web.Helpers;
using System.Web.Http;
using WXHRApi.Controllers.OtherHelper;
using WXHRApi.Models;
using WXHRApi.Models.ApprovalTask;
using WXHRApi.Models.CommonDto;
using WXHRApi.Models.CusTom;
namespace WXHRApi.Controllers
{
[RoutePrefix("api/ApprovalTask")]
public class ApprovalTaskController : ApiController
{
/// <summary>
/// 根据传入的TaskId模拟导出表单截图为pdf
/// </summary>
/// <returns></returns>
//[AcceptVerbs("GET", "POST")]
//[Route("ExportAsPdfAsync")]
//public async Task<ResponseResult> ExportAsPdfAsync(string taskId, string sn)
//{
// ResponseResult resResult = new ResponseResult();
// // 1. 下载 Chromium（只需一次）
// var browserFetcher = new BrowserFetcher();
// var installedBrowsers = browserFetcher.GetInstalledBrowsers();
// if (!installedBrowsers.Any())
// {
// // 如果没有已安装的浏览器，下载 Chromium
// await browserFetcher.DownloadAsync();
// LogHel.WriteLog("1.Chromium 下载完成");
// }
// else
// {
// LogHel.WriteLog("1.Chromium 已经存在，无需下载");
// }
// // 2. 启动浏览器
// try
// {
// using (var browser = await Puppeteer.LaunchAsync(new LaunchOptions
// {
// Headless = true, // 设置为无头模式（没有UI）
// //ExecutablePath = chromePath,
// Args = new[] { "--no-sandbox", "--disable-setuid-sandbox" }
// }))
// {
// // 3. 打开新页面
// using (var page = await browser.NewPageAsync())
// {
// var requestUrl = WebConfigurationManager.AppSettings["PDFBaseRequestUrl"];
// var account = WebConfigurationManager.AppSettings["BPMUser"];
// if (!string.IsNullOrEmpty(taskId))
// {
// requestUrl = requestUrl + "?isnoLogin=true&tid=" + taskId;
// }
// // 4. 导航到指定页面
// try
// {
// await page.GoToAsync(requestUrl, new NavigationOptions { Timeout = 150000 });
// }
// catch (Exception ex)
// {
// resResult.Code = 500;
// resResult.Message = $"导航到页面失败，错误：{ex.Message}";
// return resResult;
// }
// string fileId = PostProcess.GetNewFileID();
// if (string.IsNullOrEmpty(fileId))
// {
// resResult.Code = 500;
// resResult.Message = "附件ID获取失败！";
// }
// //获取文件保存完整路径
// string savePathRoot = WebConfigurationManager.AppSettings["AttachmentRootPath"];
// savePathRoot = PostProcess.FileIDToPath(fileId, savePathRoot);
// var dirPath = savePathRoot.Substring(0, savePathRoot.LastIndexOf(@"\"));
// if (!Directory.Exists(dirPath))
// Directory.CreateDirectory(dirPath);
// AttachmentInfo attInfo = new AttachmentInfo()
// {
// FileID = fileId,
// Ext = ".pdf",
// Name = sn + ".PDF",
// LastUpdate = DateTime.Now,
// OwnerAccount = account,
// Size = 0,
// };
// resResult.Data = fileId;
// //延时一段时间,否则可能截图到空白页
// await Task.Delay(2000);
// // 5. 截图保存为图片
// await page.PdfAsync($"{savePathRoot}");
// //6.保存附件信息
// string connectionString = Convert.ToString(WebConfigurationManager.ConnectionStrings["BPMDB"]);
// using (SqlConnection cn = new SqlConnection(connectionString))
// {
// try
// {
// cn.Open();
// PostProcess.Insert(cn, attInfo);
// }
// catch (SqlException e)
// {
// cn.Close();
// resResult.Code = 500;
// resResult.Message = $"附件信息插入失败，错误原因：{e.Message}";
// }
// }
// }
// // 7. 关闭浏览器
// await browser.CloseAsync();
// return resResult;
// }
// }
// catch (Exception ex)
// {
// resResult.Code = 500;
// resResult.Message = $"保存PDF异常，错误原因：{ex.Message}，{ex.StackTrace}";
// return resResult;
// }
//}
/// <summary>
/// 根据fileId生成下载文件地址
/// </summary>
/// <param name="fileID"></param>
/// <returns></returns>
[Route("DownLoadFileByID")]
//[HttpPost]
[AcceptVerbs("GET", "POST")]
public HttpResponseMessage DownLoadFileByID(string fileID)
{
byte[] buffer;
string attachmentRootPath = WebConfigurationManager.AppSettings["AttachmentRootPath"];
string FilePath = Path.Combine(attachmentRootPath, AttachmentInfo.FileIDToPath(fileID));
var obj = AttachmentHel.GetAttachmentInfo(fileID);
string FileName = obj.Name;
if (!File.Exists(FilePath))
throw new Exception(string.Format(Resources.YZStrings.Aspx_Upload_FileIDNotFount, FileName));
try
{
using (FileStream stream = new FileInfo(FilePath).OpenRead())
{
buffer = new Byte[stream.Length]; //从流中读取字节块并将该数据写入给定缓冲区buffer中
stream.Read(buffer, 0, Convert.ToInt32(stream.Length));
}
HttpResponseMessage httpResponseMessage = new HttpResponseMessage(HttpStatusCode.OK);
httpResponseMessage.Content = new StreamContent(new MemoryStream(buffer));
httpResponseMessage.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
var disPosition = new ContentDispositionHeaderValue("attachment");
//IE等浏览器文件名中文乱码问题处理
var userAgent = Request.Headers.UserAgent.ToString().ToUpper();
if (userAgent.Contains("MSIE") || userAgent.Contains("TRIDENT") || userAgent.Contains("EDGE"))
{
disPosition.FileName = System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8);
//disPosition.Name = System.Web.HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8);
//disPosition.Size = (long)FileName.Length;
}
else
{
disPosition.FileName = FileName;
//disPosition.Name = FileName;
//disPosition.Size = (long)FileName.Length;
}
httpResponseMessage.Content.Headers.ContentDisposition = disPosition;
//httpResponseMessage.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
//{
// FileName = FileName,
//};
return httpResponseMessage;
}
catch (Exception)
{
return new HttpResponseMessage(HttpStatusCode.NoContent);
}
}
/// <summary>
/// 根据fileId下载文件
/// </summary>
/// <param name="fileID"></param>
/// <returns></returns>
[Route("SaveFileById")]
//[HttpPost]
[AcceptVerbs("GET", "POST")]
public async Task SaveFileById(string fileID)
{
string url = $"http://xxx/api/ApprovalTask/DownLoadFileByID?fileID={fileID}";
string saveDirectory = @"C:\xxx\"; // 替换为保存文件的路径和文件名
try
{
using (HttpClient client = new HttpClient())
{
// 发送 GET 请求
HttpResponseMessage response = await client.GetAsync(url);
// 确保响应成功
response.EnsureSuccessStatusCode();
// 获取文件名
string fileName = GetFileNameFromResponse(response) ?? "default_file";
// 拼接完整保存路径
string saveFilePath = Path.Combine(saveDirectory, fileName);
// 读取内容为字节流
byte[] fileBytes = await response.Content.ReadAsByteArrayAsync();
// 保存到本地文件
File.WriteAllBytes(saveFilePath, fileBytes);
Console.WriteLine("文件保存成功：" + saveFilePath);
}
}
catch (Exception ex)
{
Console.WriteLine("下载文件失败：" + ex.Message);
}
}
/// <summary>
/// 获取文件名
/// </summary>
/// <param name="response"></param>
/// <returns></returns>
private static string GetFileNameFromResponse(HttpResponseMessage response)
{
if (response.Content.Headers.ContentDisposition != null)
{
return response.Content.Headers.ContentDisposition.FileName?.Trim('"');
}
if (response.Headers.TryGetValues("Content-Disposition", out var values))
{
string disposition = string.Join(";", values);
var fileNameMarker = "filename=";
int index = disposition.IndexOf(fileNameMarker, StringComparison.OrdinalIgnoreCase);
if (index >= 0)
{
int startIndex = index + fileNameMarker.Length;
int endIndex = disposition.IndexOf(';', startIndex);
if (endIndex < 0) endIndex = disposition.Length;
string encodedString = disposition.Substring(startIndex, endIndex - startIndex).Trim('"');
if (string.IsNullOrEmpty(encodedString))
return null;
//解码 MIME 编码的字符串
//匹配 MIME 编码格式：=?utf-8?B?...?=
var match = Regex.Match(encodedString, @"=\?utf-8\?B\?(?<encodedText>[A-Za-z0-9+/=]+)\?=", RegexOptions.IgnoreCase);
if (match.Success)
{
string base64EncodedText = match.Groups["encodedText"].Value;
byte[] bytes = Convert.FromBase64String(base64EncodedText);
return Encoding.UTF8.GetString(bytes);
}
return encodedString; // 如果不是 MIME 编码，直接返回原始字符串
}
}
return null; // 如果无法获取文件名，返回 null
}
}
}
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