using System;
using System.Collections.Generic;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;

namespace FangYar.WebUI.ashx
{
    /// <summary>
    /// OaKnolageHandler 的摘要说明
    /// </summary>
    public class OaKnolageHandler : IHttpHandler
    {

        private FangYar.BLL.OA.OA_KNOWLEDGEBASE bll = new BLL.OA.OA_KNOWLEDGEBASE();
        public void ProcessRequest(HttpContext context)
        {

            // 记录操作日志
            BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Other, "知识库操作请求", "");

            context.Response.ContentType = "text/plain";
            string action = context.Request.Params["Action"];
            string returnstr = "";


            switch (action)
            {
                case "List":
                    returnstr = List(context);
                    break;
                case "Add":
                    returnstr = Add(context);
                    break;
                case "Edit":
                    returnstr = Edit(context);
                    break;
                case "Del":
                    returnstr = Del(context);
                    break;
                case "getDicdetail":
                    returnstr = getDicdetail(context);
                    break;
            }
            context.Response.Write(returnstr);
        }
        //查询
        private string List(HttpContext context)
        {
            string returnstr = "";
            try
            {
                string OrgId = context.Request.Params["OrgId"];
                string treeID = context.Request.Params["treeID"];
                string is_content = context.Request.Params["is_content"];
                string cls = context.Request.Params["cls"];
                string ntype = context.Request.Params["ntype"];
                string keyword = context.Request.Params["keyword"];
                string page = context.Request.Params["page"];
                string limit = context.Request.Params["limit"];


                int pageIndex = 1;
                int pageSize = 10;
                if (!string.IsNullOrEmpty(page)) { pageIndex = int.Parse(page); }
                if (!string.IsNullOrEmpty(limit)) { pageSize = int.Parse(limit); }
                int startIndex = (pageIndex - 1) * pageSize;
                int endIndex = pageSize;

                string where = "1=1";
                if (!string.IsNullOrEmpty(treeID) && treeID != OrgId)
                {

                    if (is_content == "1")
                    {
                        where = " org_id in ( select o.org_id from fire_org o,(select get_Org_child_list('" + treeID + "') cids ) s where find_in_set(org_id,cids)) ";
                    }
                    else
                    {
                        where = " ORG_ID = '" + treeID + "'";
                    }
                }

                else
                {

                    if (is_content == "1")
                    {
                        where = " org_id in ( select o.org_id from fire_org o,(select get_Org_child_list('" + OrgId + "') cids ) s where find_in_set(org_id,cids)) ";
                    }
                    else
                    {
                        where = "ORG_ID = '" + OrgId + "'";
                    }
                }
                if (!string.IsNullOrEmpty(cls))
                {
                    where += " and CLS = '" + cls + "'";
                }
                if (!string.IsNullOrEmpty(ntype))
                {
                    where += " and NTYPE = '" + ntype + "'";
                }


                if (!string.IsNullOrEmpty(keyword))
                {
                    where += " and ART_TITLE like '%" + keyword + "%' ";
                }


                returnstr = "{\"code\":0,\"msg\":\"\",";
                int count = bll.GetRecordCount(where);
                returnstr += "\"count\":" + count + ",\"data\":";
                if (count == 0)
                {
                    returnstr += "[]";
                }
                else
                {
                    DataTable dt = bll.GetListByPage(where, "", startIndex, endIndex).Tables[0];
                    returnstr += Common.JsonHelper.ToJson(dt);
                }
                returnstr += "}";
            }
            catch (Exception e)
            {
                returnstr = "{\"code\":0,\"msg\":\"error\",\"count\":0,\"data\":[]}";
                // 记录操作日志
                BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Error, "知识库操作请求", "查询异常：" + e);
            }
            // 记录操作日志
            BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Query, "知识库操作请求", "查询");
            return returnstr;
        }

        private string getDicdetail(HttpContext context)
        {
            string returnstr = "";
            try
            {
                string mod_code = context.Request.Params["mod_code"];
                string dic_fid = context.Request.Params["dic_fid"];

                string where = " mod_code = '" + mod_code + "' ";
                if (!string.IsNullOrEmpty(dic_fid))
                {
                    where += " and dic_fid = '" + dic_fid + "' ";
                }
                else
                {
                    where += " and (dic_fid is null or dic_fid ='')";
                }


                FangYar.BLL.TBL.SysDicdetailBLL dicbll = new BLL.TBL.SysDicdetailBLL();

                returnstr = "{\"code\":0,\"msg\":\"\",";
                returnstr += "\"count\":-1,\"data\":";

                DataTable dt = dicbll.GetList(where).Tables[0];
                returnstr += FangYar.Common.JsonHelper.ToJson(dt);

                returnstr += "}";
            }
            catch (Exception e)
            {
                returnstr = "{\"code\":-1,\"msg\":\"error\",\"count\":0,\"data\":[]}";
                // 记录操作日志
                BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Error, "知识库操作请求", "查询异常：" + e);
            }
            // 记录操作日志
            BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Query, "知识库操作请求", "查询");
            return returnstr;

        }

        //添加
        private string Add(HttpContext context)
        {
            string returnstr = "";
            int code = -1;
            string msg = "";
            try
            {
                string id = Guid.NewGuid().ToString("N");
                string cls = context.Request.Params["cls"];
                string ntype = context.Request.Params["ntype"];
                string art_title = context.Request.Params["art_title"];

                string art_come = context.Request.Params["art_come"];
                string art_pic = context.Request.Params["art_pic"];
                string art_short = context.Request.Params["art_short"];
                string art_cont = context.Request.Params["art_cont"];

                string org_id = context.Request.Params["org_id"];
                string org_name = context.Request.Params["org_name"];
                string uid = context.Request.Params["uid"];
                string uname = context.Request.Params["uname"];

                byte[] outputb = Convert.FromBase64String(art_cont);
                string orgStr = Encoding.Default.GetString(outputb);

                string art_conttext = System.Web.HttpUtility.UrlDecode(orgStr);//将Url中的编码转换为简体汉字   , System.Text.Encoding.GetEncoding("GB2312")


                ////存储图片
                string picture = GetUploadImg(context);

                //
                FangYar.Model.OA.OA_KNOWLEDGEBASE model = new Model.OA.OA_KNOWLEDGEBASE();
                model.ID = id;
                model.RECORDSNUM = 0;
                model.USERS_UID = uid;
                model.USERS_NAME = uname;
                model.ORG_ID = org_id;
                model.ORG_NAME = org_name;
                model.CREATE_TIME = DateTime.Now;
                model.CLS = cls;
                model.NTYPE = ntype;
                model.ART_TITLE = art_title;

                model.ART_COME = art_come;
                model.ART_PIC = picture;
                model.ART_SHORT = art_short;
                model.ART_CONT = art_conttext;

                if (bll.Add(model))
                {
                    msg = "添加成功！";
                    code = 1;
                }
                else { msg = "添加失败！"; }
            }
            catch (Exception e)
            {
                msg = "添加失败！";
                // 记录操作日志
                BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Error, "知识库操作请求", "添加异常：" + e);
            }
            returnstr = "{\"msg\":\"" + msg + "\",\"code\":" + code + "}";
            // 记录操作日志
            BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Add, "知识库操作请求", "添加");
            return returnstr;
        }


        //图片上传
        private string GetUploadImg(HttpContext context)
        {
            string returnStr = "";

            try
            {
                string serverPath = "Upload/OA/Kon/";
                string base64Str = context.Request.Params["art_pic"];
                base64Str = base64Str.Replace("data:image/png;base64,", "").Replace("data:image/jgp;base64,", "")
                        .Replace("data:image/jpg;base64,", "").Replace("data:image/jpeg;base64,", ""); //将base64头部信息替换


                byte[] imageBytes = Convert.FromBase64String(base64Str);
                using (MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length))
                {
                    ms.Write(imageBytes, 0, imageBytes.Length);

                    System.Drawing.Image img = Image.FromStream(ms, true);//将流中的图片转换为Image图片对象

                    Random ran = new Random((int)DateTime.Now.Ticks);//利用时间种子解决伪随机数短时间重复问题
                    if (!Directory.Exists(context.Server.MapPath("~/" + serverPath)))
                    {
                        DirectoryInfo directoryInfo = new DirectoryInfo(context.Server.MapPath("~/" + serverPath));
                        directoryInfo.Create();
                    }

                    //文件保存位置及命名，精确到毫秒并附带一组随机数，防止文件重名，数据库保存路径为此变量
                    //string serverPath = "Upload/Device/";
                    string filename = serverPath + DateTime.Now.ToString("yyyyMMddhhmmssms") + ran.Next(99999) + ".jpg";
                    //路径映射为绝对路径
                    string path = context.Server.MapPath("~/") + filename;

                    img.Save(path);//图片保存，JPEG格式图片较小
                    returnStr = filename;
                }
            }
            catch (Exception ex)
            {
                // 记录操作日志
                BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Error, "知识库操作请求", "图片上传异常：" + ex);
            }
            // 记录操作日志
            BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Add, "知识库操作请求", "图片上传");
            return returnStr;
        }

        //修改
        private string Edit(HttpContext context)
        {
            string returnstr = "";
            int code = -1;
            string msg = "";
            try
            {
                string id = context.Request.Params["ID"];
                string cls = context.Request.Params["cls"];
                string ntype = context.Request.Params["ntype"];
                string art_title = context.Request.Params["art_title"];

                string art_come = context.Request.Params["art_come"];
                string art_pic = context.Request.Params["art_pic"];
                string art_pictype = context.Request.Params["art_pictype"];
                string art_short = context.Request.Params["art_short"];
                string art_cont = context.Request.Params["art_cont"];

                string org_id = context.Request.Params["org_id"];
                string org_name = context.Request.Params["org_name"];
                string uid = context.Request.Params["uid"];
                string uname = context.Request.Params["uname"];

                //转码文本域内容
                byte[] outputb = Convert.FromBase64String(art_cont);
                string orgStr = Encoding.Default.GetString(outputb);
                string art_conttext = System.Web.HttpUtility.UrlDecode(orgStr);//将Url中的编码转换为简体汉字   , System.Text.Encoding.GetEncoding("GB2312")

                //存储图片
                string picture = "";
                if (art_pictype == "0")
                {
                    picture = GetUploadImg(context);
                }
                else
                {
                    picture = art_pic;
                }

                FangYar.Model.OA.OA_KNOWLEDGEBASE model = bll.GetModel(id);
                if (model != null)
                {
                    model.ID = id;
                    model.RECORDSNUM = 0;
                    model.CLS = cls;
                    model.NTYPE = ntype;
                    model.ART_TITLE = art_title;

                    model.ART_COME = art_come;
                    model.ART_PIC = picture;
                    model.ART_SHORT = art_short;
                    model.ART_CONT = art_conttext;
                    model.UPDATE_TIME = DateTime.Now;
                    if (bll.Update(model))
                    {
                        msg = "编辑成功！";
                        code = 1;
                    }
                    else { msg = "编辑失败！"; }
                }
                else
                {
                    msg = "编辑失败！";
                }
            }
            catch (Exception e)
            {
                msg = "编辑失败！";
                // 记录操作日志
                BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Error, "知识库操作请求", "修改异常：" + e);
            }
            returnstr = "{\"msg\":\"" + msg + "\",\"code\":" + code + "}";
            // 记录操作日志
            BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Update, "知识库操作请求", "修改");
            return returnstr;
        }

        //删除
        private string Del(HttpContext context)
        {
            string returnstr = "";
            int code = -1;
            string msg = "";
            try
            {
                string id = context.Request.Params["id"];
                if (bll.Delete(id))
                {
                    msg = "删除成功！";
                    code = 1;
                }
                else
                {
                    msg = "删除失败！";
                }
            }
            catch (Exception e)
            {
                msg = "删除失败！";
                // 记录操作日志
                BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Error, "知识库操作请求", "删除异常：" + e);
            }
            returnstr = "{\"code\":" + code + ",\"msg\":\"" + msg + "\"}";
            // 记录操作日志
            BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Delete, "知识库操作请求", "删除");
            return returnstr;
        }


        ///// <summary>
        ///// 将Base64字符串转换为图片并保存到本地
        ///// </summary>
        ///// <param name="base64Str">base64字符串</param>
        ///// <param name="savePath">图片保存地址，如：/Content/Images/10000.png</param>
        ///// <returns>保存路径</returns>
        //private string Base64StrToImage(string base64Str, string savePath)
        //{
        //    var ret = "";
        //    try
        //    {
        //        base64Str = base64Str.Replace("data:image/png;base64,", "").Replace("data:image/jgp;base64,", "")
        //            .Replace("data:image/jpg;base64,", "").Replace("data:image/jpeg;base64,", ""); //将base64头部信息替换


        //        byte[] imageBytes = Convert.FromBase64String(base64Str);
        //        using (MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length))
        //        {
        //            ms.Write(imageBytes, 0, imageBytes.Length);
        //            var bitmap = Image.FromStream(ms, true);

        //            if (bitmap != null)
        //            {
        //                //创建文件夹
        //                var folderPath = savePath.Substring(0, savePath.LastIndexOf('\\'));
        //                ////FileHelper.CreateDir(folderPath);
        //                if (!Directory.Exists(folderPath))
        //                {
        //                    Directory.CreateDirectory(folderPath);
        //                }
        //                //图片后缀格式
        //                var suffix = savePath.Substring(savePath.LastIndexOf('.') + 1,
        //                    savePath.Length - savePath.LastIndexOf('.') - 1).ToLower();
        //                var suffixName = suffix == "png"
        //                    ? ImageFormat.Png
        //                    : suffix == "jpg" || suffix == "jpeg"
        //                        ? ImageFormat.Jpeg
        //                        : suffix == "bmp"
        //                            ? ImageFormat.Bmp
        //                            : suffix == "gif"
        //                                ? ImageFormat.Gif
        //                                : ImageFormat.Jpeg;

        //                //这里复制一份对图像进行保存，否则会出现“GDI+ 中发生一般性错误”的错误提示
        //                var bmpNew = new Bitmap(bitmap);
        //                bmpNew.Save(savePath, suffixName);
        //                bmpNew.Dispose();
        //                bitmap.Dispose();
        //                ret = savePath;
        //            }
        //            else
        //            {
        //                ret = "";
        //            }
        //        }
        //    }
        //    catch (Exception ex)
        //    {
        //        ret = "";
        //    }
        //    return ret;
        //}
        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}