using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;

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

        public void ProcessRequest(HttpContext context)
        {
            context.Response.ContentType = "text/plain";
            string action = context.Request.Params["Action"];
            string returnstr = "";
            switch (action)
            {
                case "InsInfo":
                    returnstr = InsInfo(context);
                    break;
                case "UpdInfo":
                    returnstr = UpdInfo(context);
                    break;
                case "DelInfo":
                    returnstr = DelInfo(context);
                    break;
                case "SelInfo":
                    returnstr = SelInfo(context);
                    break;
                case "SelInfoPage":
                    returnstr = SelInfoPage(context);
                    break;
            }
            context.Response.Write(returnstr);
        }

        /// <summary>
        /// 添加信息
        /// </summary>
        /// <param name="context"></param>
        /// <returns></returns>
        private string InsInfo(HttpContext context)
        {
            string returnstr = "";
            int code = 0;
            string msg = "";
            try
            {
                //表名
                string tbName = UrlDecode(context.Request.Params["tbName"]);
                //列名
                string columns = UrlDecode(context.Request.Params["columns"]);
                //内容
                string values = UrlDecode(context.Request.Params["values"]);

                StringBuilder strsql = new StringBuilder();

                strsql.Append(" insert into " + tbName + " (" + columns + ") values (" + values + ") ");

                int i = FangYar.Common.MySqlHelper.Execute(strsql.ToString());

                if (i > 0)
                {
                    msg = "保存成功！";
                    code = 1;
                }
                else { msg = "保存失败！"; }
            }
            catch (Exception e)
            {
                code = 2;
                msg = e.Message;
                // 记录操作日志
                BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Error, "消防要事日记操作请求", "保存异常：" + e);
            }
            returnstr = "{\"msg\":\"" + msg + "\",\"code\":" + code + "}";
            // 记录操作日志
            BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Add, "消防要事日记操作请求", "保存");
            return returnstr;
        }

        /// <summary>
        /// 更新信息
        /// </summary>
        /// <param name="context"></param>
        /// <returns></returns>
        private string UpdInfo(HttpContext context)
        {
            string returnstr = "";
            int code = 0;
            string msg = "";
            try
            {
                //表名
                string tbName = UrlDecode(context.Request.Params["tbName"]);
                //设置信息
                string sets = UrlDecode(context.Request.Params["sets"]);
                //条件
                string wheres = context.Request.Params["wheres"];

                StringBuilder strsql = new StringBuilder();

                strsql.Append(" update " + tbName + " set " + sets + " where " + wheres);

                int i = FangYar.Common.MySqlHelper.Execute(strsql.ToString());

                if (i > 0)
                {
                    msg = "保存成功！";
                    code = 1;
                }
                else { msg = "保存失败！"; }
            }
            catch (Exception e)
            {
                code = 2;
                msg = e.Message;
                // 记录操作日志
                BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Error, "消防要事日记操作请求", "保存异常：" + e);
            }
            returnstr = "{\"msg\":\"" + msg + "\",\"code\":" + code + "}";
            // 记录操作日志
            BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Add, "消防要事日记操作请求", "保存");
            return returnstr;
        }

        /// <summary>
        /// 删除信息
        /// </summary>
        /// <param name="context"></param>
        /// <returns></returns>
        private string DelInfo(HttpContext context)
        {
            string returnstr = "";
            int code = 0;
            string msg = "";
            try
            {
                //表名
                string tbName = UrlDecode(context.Request.Params["tbName"]);
                //条件
                string wheres = UrlDecode(context.Request.Params["wheres"]);

                StringBuilder strsql = new StringBuilder();

                strsql.Append(" delete FROM " + tbName + " where " + wheres);

                int i = FangYar.Common.MySqlHelper.Execute(strsql.ToString());

                if (i > 0)
                {
                    msg = "保存成功！";
                    code = 1;
                }
                else { msg = "保存失败！"; }
            }
            catch (Exception e)
            {
                code = 2;
                msg = e.Message;
                // 记录操作日志
                BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Error, "消防要事日记操作请求", "保存异常：" + e);
            }
            returnstr = "{\"msg\":\"" + msg + "\",\"code\":" + code + "}";
            // 记录操作日志
            BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Add, "消防要事日记操作请求", "保存");
            return returnstr;
        }


        /// <summary>
        /// 分页查询信息
        /// </summary>
        /// <param name="context"></param>
        /// <returns></returns>
        private string SelInfoPage(HttpContext context)
        {
            string returnstr = "";
            try
            {

                //表名
                string tbName = UrlDecode(context.Request.Params["tbName"]);
                //列名
                string columns = UrlDecode(context.Request.Params["columns"]);
                //条件
                string wheres = UrlDecode(context.Request.Params["wheres"]);
                //排序
                string orderBy = UrlDecode(context.Request.Params["orderBy"]);

                if (string.IsNullOrWhiteSpace(orderBy))
                {
                    orderBy = " 1 ";
                }
                if (string.IsNullOrWhiteSpace(columns))
                {
                    columns = " * ";
                }
                if (string.IsNullOrWhiteSpace(wheres))
                {
                    wheres = " 1=1 ";
                }

                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); }
                pageIndex = pageIndex < 1 ? 1 : pageIndex;
                pageSize = pageSize < 1 ? 1 : pageSize;

                int startnum = (pageIndex - 1) * pageSize;

                string sqlCount = " SELECT count(1) from " + tbName + " WHERE " + wheres;

                string sqlStr = " SELECT " + columns + " from " + tbName + " WHERE " + wheres + " order by " + orderBy + " limit " + startnum + ", " + pageSize;

                var dtCount = FangYar.Common.MySqlHelper.QueryTable(sqlCount);
                int rowCount = 0;
                if (dtCount.Rows.Count > 0)
                {
                    int.TryParse(dtCount.Rows[0][0] + "", out rowCount);
                }

                returnstr = "{\"code\":0,\"msg\":\"\",";


                var dtList = FangYar.Common.MySqlHelper.QueryTable(sqlStr);

                returnstr += "\"count\":" + rowCount + ",\"data\":";

                returnstr += FangYar.Common.JsonHelper.ToJson(dtList);

                returnstr += "}";

            }
            catch (Exception e)
            {
                returnstr = "{\"code\":0,\"msg\":\"error\",\"count\":0,\"data\":[]}";
                // 记录操作日志
                BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Query, "消防要事日记操作请求", "分页查询异常：" + e);
            }
            // 记录操作日志
            BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Query, "消防要事日记操作请求", "分页查询");
            return returnstr;
        }


        /// <summary>
        /// 查询全部信息
        /// </summary>
        /// <param name="context"></param>
        /// <returns></returns>
        private string SelInfo(HttpContext context)
        {
            string returnstr = "";
            try
            {

                //表名
                string tbName = UrlDecode(context.Request.Params["tbName"]);
                //列名
                string columns = UrlDecode(context.Request.Params["columns"]);
                //条件
                string wheres = UrlDecode(context.Request.Params["wheres"]);
                //排序
                string orderBy = UrlDecode(context.Request.Params["orderBy"]);

                if (string.IsNullOrWhiteSpace(orderBy))
                {
                    orderBy = " 1 ";
                }
                if (string.IsNullOrWhiteSpace(columns))
                {
                    columns = " * ";
                }
                if (string.IsNullOrWhiteSpace(wheres))
                {
                    wheres = " 1=1 ";
                }

                string sqlCount = " SELECT count(1) from " + tbName + " WHERE " + wheres;

                string sqlStr = " SELECT " + columns + " from " + tbName + " WHERE " + wheres + " order by " + orderBy;

                var dtCount = FangYar.Common.MySqlHelper.QueryTable(sqlCount);
                int rowCount = 0;
                if (dtCount.Rows.Count > 0)
                {
                    int.TryParse(dtCount.Rows[0][0] + "", out rowCount);
                }

                returnstr = "{\"code\":0,\"msg\":\"\",";


                var dtList = FangYar.Common.MySqlHelper.QueryTable(sqlStr);

                returnstr += "\"count\":" + rowCount + ",\"data\":";

                returnstr += FangYar.Common.JsonHelper.ToJson(dtList);

                returnstr += "}";

            }
            catch (Exception e)
            {
                returnstr = "{\"code\":0,\"msg\":\"error\",\"count\":0,\"data\":[]}";
                // 记录操作日志
                BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Query, "消防要事日记操作请求", "分页查询异常：" + e);
            }
            // 记录操作日志
            BLL.SysOperationLogHelp.AddSysOperationLog(context, Common.EnumOperationLogType.Query, "消防要事日记操作请求", "分页查询");
            return returnstr;
        }



        private static string UrlDecode(string code)
        {

            FangYar.Common.MyLogHelper.WriteMsg(new FangYar.Common.LogInfoMo() { message = code, msgType = FangYar.Common.EnumLogMsgTypeEnum.Error, path = "UrlCode" });

            if (string.IsNullOrWhiteSpace(code))
            {
                return code;
            }
            try
            {
                byte[] data = Convert.FromBase64String(code);
                string decodedData = System.Text.Encoding.UTF8.GetString(data);
                string str1 = System.Net.WebUtility.UrlDecode(decodedData);
                str1 = str1.Replace("###", "%");
                str1 = str1.Replace("#beiqie#", " and ");
                return str1;

            }
            catch (Exception ex)
            {

            }

            string decodedUrl = System.Net.WebUtility.UrlDecode(code);
            decodedUrl = decodedUrl.Replace("###", "%");
            decodedUrl = decodedUrl.Replace("#beiqie#", " and ");
            return decodedUrl;
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}