using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using HZQR.Common;

namespace DataBaseTransfer
{
    public partial class MainForm : Form
    {
        public MainForm()
        {
            InitializeComponent();
        }

        private void MainForm_Load(object sender, EventArgs e)
        {
            string OwnerName = ConfigurationManager.AppSettings["OwnerName"];
            string _OracleConnStr = ConfigurationManager.AppSettings["OracleConnStr"];
            string _OracleConnStrTemp = ConfigurationManager.AppSettings["OracleConnStrTemp"];

            Method.OracleHelper oracleHelper = new Method.OracleHelper(_OracleConnStr.Split(',')[0], _OracleConnStr.Split(',')[1],
                _OracleConnStr.Split(',')[2], _OracleConnStr.Split(',')[3], _OracleConnStr.Split(',')[4]);
            Method.OracleHelper oracleHelperTemp = new Method.OracleHelper(_OracleConnStrTemp.Split(',')[0], _OracleConnStrTemp.Split(',')[1],
                _OracleConnStrTemp.Split(',')[2], _OracleConnStrTemp.Split(',')[3], _OracleConnStrTemp.Split(',')[4]);

            TransferData(OwnerName, oracleHelper, oracleHelperTemp);
            //ModifySequence(OwnerName, oracleHelper, oracleHelperTemp);
            Close();
        }

        public void TransferData(string OwnerName, Method.OracleHelper oracleHelper, Method.OracleHelper oracleHelperTemp)
        {
            int ExcuteCount;
            string SQLString;

            if (!string.IsNullOrWhiteSpace(OwnerName))
            {
                foreach (string Owner in OwnerName.Split(','))
                {
                    LogUtil.WriteLog($"///------------开始执行【{ Owner }】用户数据同步------------///");

                    SQLString = $"SELECT TABLE_NAME FROM SYS.ALL_TABLES WHERE OWNER = '{ Owner }'";
                    DataTable dtTableName = oracleHelperTemp.ExcuteSqlGetDataTable(SQLString);

                    foreach (DataRow drTableName in dtTableName.Rows)
                    {
                        try
                        {
                            SQLString = $"DELETE FROM { Owner }.{ drTableName[0] }";
                            ExcuteCount = oracleHelper.ExcuteSql(SQLString);
                            LogUtil.WriteLog($"删除表【{ Owner }.{ drTableName[0] }】{ ExcuteCount }条记录");
                        }
                        catch (Exception ex)
                        {
                            LogUtil.WriteLog(null, $"删除表【{ Owner }.{ drTableName[0] }】出现异常：{ ex.Message }",
                                DateTime.Now.ToString("yyyyMMdd") + "_Error");

                            SQLString = $@"CREATE TABLE { Owner }.{ drTableName[0] } AS 
                                SELECT * FROM { Owner }.{ drTableName[0] }@ACT WHERE 1 = 2";
                            ExcuteCount = oracleHelper.ExcuteSql(SQLString);
                            LogUtil.WriteLog(null, $"重建表【{ Owner }.{ drTableName[0] }】{ ExcuteCount }条记录",
                                DateTime.Now.ToString("yyyyMMdd") + "_Rebuild");
                        }

                        try
                        {
                            SQLString = $@"INSERT INTO { Owner }.{ drTableName[0] }@ACT 
                                SELECT * FROM { Owner }.{ drTableName[0] }";
                            ExcuteCount = oracleHelperTemp.ExcuteSql(SQLString);
                            LogUtil.WriteLog($"更新表【{ Owner }.{ drTableName[0] }】{ ExcuteCount }条记录");
                        }
                        catch (Exception ex)
                        {
                            LogUtil.WriteLog(null, $"更新表【{ Owner }.{ drTableName[0] }】记录出现异常：{ ex.Message }",
                                DateTime.Now.ToString("yyyyMMdd") + "_Error");

                            SQLString = $"DROP TABLE { Owner }.{ drTableName[0] }";
                            ExcuteCount = oracleHelper.ExcuteSql(SQLString);
                            LogUtil.WriteLog(null, $"移除表【{ Owner }.{ drTableName[0] }】{ ExcuteCount }条记录",
                                DateTime.Now.ToString("yyyyMMdd") + "_Drop");

                            SQLString = $@"CREATE TABLE { Owner }.{ drTableName[0] } AS 
                                SELECT * FROM { Owner }.{ drTableName[0] }@ACT WHERE 1 = 2";
                            ExcuteCount = oracleHelper.ExcuteSql(SQLString);
                            LogUtil.WriteLog(null, $"重建表【{ Owner }.{ drTableName[0] }】{ ExcuteCount }条记录",
                                DateTime.Now.ToString("yyyyMMdd") + "_Rebuild");

                            SQLString = $@"INSERT INTO { Owner }.{ drTableName[0] }@ACT 
                                SELECT * FROM { Owner }.{ drTableName[0] }";
                            ExcuteCount = oracleHelperTemp.ExcuteSql(SQLString);
                            LogUtil.WriteLog($"更新表【{ Owner }.{ drTableName[0] }】{ ExcuteCount }条记录");
                        }
                    }

                    LogUtil.WriteLog($"///------------用户【{ Owner }】数据同步结束------------///");
                }
            }
        }

        public void ModifySequence(string OwnerName, Method.OracleHelper oracleHelper, Method.OracleHelper oracleHelperTemp)
        {
            int ExcuteCount;
            string SQLString;

            if (!string.IsNullOrWhiteSpace(OwnerName))
            {
                foreach (string Owner in OwnerName.Split(','))
                {
                    LogUtil.WriteLog($"///------------开始执行【{ Owner }】用户序列同步------------///");

                    SQLString = $"SELECT * FROM SYS.ALL_SEQUENCES WHERE SEQUENCE_OWNER = '{ Owner }'";
                    DataTable dtSequence = oracleHelperTemp.ExcuteSqlGetDataTable(SQLString);

                    foreach (DataRow drSequence in dtSequence.Rows)
                    {
                        try
                        {
                            SQLString = $@"DROP SEQUENCE { Owner }.{ drSequence["SEQUENCE_NAME"] }";
                            ExcuteCount = oracleHelper.ExcuteSql(SQLString);
                            LogUtil.WriteLog($"移除序列【{ Owner }.{ drSequence["SEQUENCE_NAME"] }】{ ExcuteCount }条记录");
                        }
                        catch (Exception ex)
                        {
                            LogUtil.WriteLog(null, $"移除序列【{ Owner }.{ drSequence["SEQUENCE_NAME"] }】记录出现异常：{ ex.Message }",
                                DateTime.Now.ToString("yyyyMMdd") + "_Error");
                        }

                        SQLString = $@"CREATE SEQUENCE { Owner }.{ drSequence["SEQUENCE_NAME"] }
                                INCREMENT BY 1
                                START WITH { drSequence["LAST_NUMBER"] }
                                NOMAXVALUE
                                NOMINVALUE
                                NOCYCLE 
                                CACHE 2
                                NOORDER";
                        ExcuteCount = oracleHelper.ExcuteSql(SQLString);
                        LogUtil.WriteLog(null, $"重建序列【{ Owner }.{ drSequence["SEQUENCE_NAME"] }】{ ExcuteCount }条记录",
                            DateTime.Now.ToString("yyyyMMdd") + "_Sequence");
                    }

                    LogUtil.WriteLog($"///------------用户【{ Owner }】序列同步结束------------///");
                }
            }
        }
    }
}