using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;
using WebApplication.controller;

namespace WebApplication.Controllers
{
    /// <summary>
    /// 氚云API
    /// </summary>
    public class cyAPI
    {
        WebApi webApi = new WebApi();
        printInfo printInfo = new printInfo();
        static HttpClient client = new HttpClient();

        /// <summary>
        /// 公用方法
        /// </summary>
        /// <param name="peopledata"></param>
        /// <returns></returns>
        public string commonMethod(string token, string peopledata,string ufname,string FilePropertyName)
        {
            string result = instances(token,"e02b79c9-ec99-4982-bcb7-2811457b98c8", peopledata);      //e02b79c9-ec99-4982-bcb7-2811457b98c8
            JObject toArr = JsonConvert.DeserializeObject<JObject>(result);
            if (toArr["code"].ToString() == "success")
            {
                string dtnow = DateTimeToLongTimeStamp(DateTime.Now).ToString();
                printInfo.WriteDataToExcelTemplate("E:/jsjPrintTemplate/XBPrintTemplateOA.xlsx", "E:/jsjPrintTemplate/XBPrintTemplateOA" + dtnow + ".xlsx", JsonConvert.SerializeObject(peopledata[0]).ToString(), "OA审批");
                printInfo.excelToPdf("E:/jsjPrintTemplate/XBPrintTemplateOA" + dtnow + ".xlsx", "E:/jsjPrintTemplate/XBPrintTemplateOA" + dtnow + ".PDF");
                string bizObjectId = toArr["data"]["bizObjectId"].ToString();
                string schemaCode = toArr["data"]["schemaCode"].ToString();
                UploadAttachment(schemaCode, bizObjectId, "E:\\jsjPrintTemplate\\XBPrintTemplateOA" + dtnow + ".PDF", ufname, FilePropertyName);
            }
            return "true";
        }

        /// <summary>
        /// Post 方式调用表单创建
        /// </summary>
        /// <returns></returns>
        public string instances(string token,string opUserId,string bizJson)
        {
            string url = "https://api.dingtalk.com/v1.0/h3yun/forms/instances";
            Dictionary<string, string> dic = new Dictionary<string, string>();
            dic.Add("schemaCode", "D1463788fabdbfcf89b4080b91d58b1dbc7f856");
            dic.Add("opUserId", opUserId);
            dic.Add("bizObjectJson", bizJson);
            dic.Add("isDraft", "false");
            Hashtable headht = new Hashtable();
            headht.Add("x-acs-dingtalk-access-token", token);
            string toredate = webApi.PostJson(url, JsonConvert.SerializeObject(dic).ToString(), headht);
            //string toredate = webApi.HttpPosts(url, JsonConvert.SerializeObject(dic).ToString(), token);
            return toredate;
        }

        /// <summary>
        /// Get 方法调用文件上传接口地址
        /// </summary>
        /// <returns></returns>
        public string uploadUrls(string token,string schemaCode, string bizObjectId,string fieldName)
        {
            //GET / v1.0 / h3yun / attachments / uploadUrls ? schemaCode = String & bizObjectId = String & fieldName = String & isOverwrite = Boolean HTTP / 1.1
            //Host: api.dingtalk.com
            //x - acs - dingtalk - access - token:String
            //Content - Type:application / json
            //schemaCode  表单编码。       bizObjectId 业务数据实例ID。  fieldName  文件上传至目标控件的字段名。 isOverwrite 是否覆盖，取值：false：添加
            string url = "https://api.dingtalk.com/v1.0/h3yun/attachments/uploadUrls?schemaCode="+ schemaCode + "&bizObjectId="+ bizObjectId + "&fieldName="+ fieldName + "&isOverwrite=false";
            var errUf = webApi.HttpGet(url, token);
            return errUf.ToString() ;
        }

        /// <summary>
        /// 附件上传接口 Post
        /// </summary>
        /// <param name="SchemaCode">表单编码</param>
        /// <param name="BizObjectId">表单控件编码</param>
        /// <param name="fileurl">表单ObjectId值</param>
        /// <param name="name">名称</param>
        /// <returns></returns>
        public string UploadAttachment(string SchemaCode,string BizObjectId,string fileurl,string name,string FilePropertyName)
        {
            WebHeaderCollection head = new WebHeaderCollection();
            head.Add("EngineCode", "mdhf9vbowovdb2xastdoua0f0");
            head.Add("EngineSecret", "jMr8Hdq+RmPcGHfP8OPBQ/23a+dsNkvE3NH+6KFu5OfNvhUJ07cSmg==");
            //请求的URL
            string url = "https://www.h3yun.com/OpenApi/UploadAttachment?SchemaCode="+ SchemaCode + "&FilePropertyName="+ FilePropertyName + "&BizObjectId="+ BizObjectId;
            string directory = Path.GetDirectoryName(fileurl);
            if (!Directory.Exists(directory))
            {
                Directory.CreateDirectory(directory);
            }
            //读取本地文件
            FileStream file = new FileStream(fileurl, FileMode.Open);
            var fd = file.Length;
            byte[] bytes = new byte[fd];
            file.Read(bytes, 0, Convert.ToInt32(fd));
            file.Close();
            //调用上传方法
            string filename = name+".PDF"; //氚云显示的文件名,必须带后缀（例：file.jpg）      
            string contentType = "application/pdf";//文件ContentType,不清楚可以打开网址(https://www.w3school.com.cn/media/media_mimeref.asp)参考（例：image/jpg）
            string result = _UploadFile(url, bytes, filename, head, contentType);
            return result;
        }

        /// <summary>
        /// 上传方法
        /// </summary>
        /// <param name="url">上传接口Url</param>
        /// <param name="bytes">文件Byte</param>
        /// <param name="fileName">文件名</param>
        /// <param name="headers">请求Headers</param>
        /// <param name="contentType">文件ContentType</param>
        /// <returns></returns>
        private static string _UploadFile(string url, byte[] bytes, string fileName, WebHeaderCollection headers, string contentType)
        {
            Uri oUri = new Uri(url);
            string strBoundary = "----------" + DateTime.Now.Ticks.ToString("x");

            // The trailing boundary string
            byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + strBoundary + "--\r\n");

            // The post message header
            StringBuilder sb = new StringBuilder();
            sb.Append("--");
            sb.Append(strBoundary);
            sb.Append("\r\n");
            sb.Append("Content-Disposition:   form-data; name=\"media\";");
            sb.Append(" filename=\"");
            sb.Append(fileName);
            sb.Append("\"");
            sb.Append("\r\n");
            sb.Append("Content-Type: ");
            sb.Append(contentType + "\r\n\r\n");
            string strPostHeader = sb.ToString();
            byte[] postHeaderBytes = Encoding.UTF8.GetBytes(strPostHeader);
            // The WebRequest
            HttpWebRequest oWebrequest = (HttpWebRequest)WebRequest.Create(oUri);
            oWebrequest.ContentType = "multipart/form-data; boundary=" + strBoundary;
            oWebrequest.Method = "POST";
            if (headers != null)
            {
                foreach (string key in headers.Keys)
                {
                    oWebrequest.Headers.Add(key, headers[key]);
                }
            }
            // This is important, otherwise   the whole file will be read to memory anyway...
            oWebrequest.AllowWriteStreamBuffering = false;
            long length = postHeaderBytes.Length + bytes.Length + boundaryBytes.Length;
            oWebrequest.ContentLength = length;
            using (Stream oRequestStream = oWebrequest.GetRequestStream())
            {
                // Write the post header
                oRequestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
                oRequestStream.Write(bytes, 0, bytes.Length);
                // Add the trailing boundary
                oRequestStream.Write(boundaryBytes, 0, boundaryBytes.Length);
                WebResponse oWResponse = oWebrequest.GetResponse();
                using (Stream s = oWResponse.GetResponseStream())
                {
                    using (StreamReader sr = new StreamReader(s))
                    {
                        string sReturnString = sr.ReadToEnd();
                        return sReturnString;
                    }
                }
            }
        }

        /// <summary>
        /// DateTime转换为13位时间戳（单位：毫秒）
        /// </summary>
        /// <param name="dateTime"> DateTime</param>
        /// <returns>13位时间戳（单位：毫秒）</returns>
        public static long DateTimeToLongTimeStamp(DateTime dateTime)
        {
            return (long)(dateTime.ToUniversalTime() - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc)).TotalMilliseconds;
        }
    }
}