using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using MySql.Data.MySqlClient;

namespace RoadFlow.Data.ORACLE
{
    public class WorkFlowData : RoadFlow.Data.Interface.IWorkFlowData
    {
        private DBHelper dbHelper = new DBHelper();
        /// <summary>
        /// 构造函数
        /// </summary>
        public WorkFlowData()
        {
        }
        /// <summary>
        /// 添加记录
        /// </summary>
        /// <param name="model">RoadFlow.Data.Model.WorkFlowData实体类</param>
        /// <returns>操作所影响的行数</returns>
        public int Add(RoadFlow.Data.Model.WorkFlowData model)
        {
            string sql = @"INSERT INTO WorkFlowData
				(ID,InstanceID,LinkID,TableName,FieldName,Value) 
				VALUES(@ID,@InstanceID,@LinkID,@TableName,@FieldName,@Value)";
            MySqlParameter[] parameters = new MySqlParameter[]{
                new MySqlParameter("@ID", MySqlDbType.VarChar, 50){ Value = model.ID },
                new MySqlParameter("@InstanceID", MySqlDbType.VarChar, 50){ Value = model.InstanceID },
                new MySqlParameter("@LinkID", MySqlDbType.VarChar, 50){ Value = model.LinkID },
                new MySqlParameter("@TableName", MySqlDbType.VarChar, 500){ Value = model.TableName },
                new MySqlParameter("@FieldName", MySqlDbType.VarChar, 500){ Value = model.FieldName },
                new MySqlParameter("@Value", MySqlDbType.VarChar, 8000){ Value = model.Value }
            };
            return dbHelper.Execute(sql, parameters);
        }
        /// <summary>
        /// 更新记录
        /// </summary>
        /// <param name="model">RoadFlow.Data.Model.WorkFlowData实体类</param>
        public int Update(RoadFlow.Data.Model.WorkFlowData model)
        {
            string sql = @"UPDATE WorkFlowData SET 
				InstanceID=@InstanceID,LinkID=@LinkID,TableName=@TableName,FieldName=@FieldName,Value=@Value
				WHERE ID=@ID";
            MySqlParameter[] parameters = new MySqlParameter[]{
                new MySqlParameter("@InstanceID", MySqlDbType.VarChar, 50){ Value = model.InstanceID },
                new MySqlParameter("@LinkID", MySqlDbType.VarChar, 50){ Value = model.LinkID },
                new MySqlParameter("@TableName", MySqlDbType.VarChar, 500){ Value = model.TableName },
                new MySqlParameter("@FieldName", MySqlDbType.VarChar, 500){ Value = model.FieldName },
                new MySqlParameter("@Value", MySqlDbType.VarChar, 8000){ Value = model.Value },
                new MySqlParameter("@ID", MySqlDbType.VarChar, 50){ Value = model.ID }
            };
            return dbHelper.Execute(sql, parameters);
        }
        /// <summary>
        /// 删除记录
        /// </summary>
        public int Delete(Guid id)
        {
            string sql = "DELETE FROM WorkFlowData WHERE ID=@ID";
            MySqlParameter[] parameters = new MySqlParameter[]{
                new MySqlParameter("@ID", MySqlDbType.VarChar, 50){ Value = id }
            };
            return dbHelper.Execute(sql, parameters);
        }
        /// <summary>
        /// 将DataRedar转换为List
        /// </summary>
        private List<RoadFlow.Data.Model.WorkFlowData> DataReaderToList(DataTable dataReader)
        {
            List<RoadFlow.Data.Model.WorkFlowData> List = new List<RoadFlow.Data.Model.WorkFlowData>();
            RoadFlow.Data.Model.WorkFlowData model = null;
            for (int i = 0; i < dataReader.Rows.Count; i++)
            {
                model = new RoadFlow.Data.Model.WorkFlowData();
                model.ID = new Guid(dataReader.Rows[i][0] + "");
                model.InstanceID = new Guid(dataReader.Rows[i][1] + "");
                model.LinkID = new Guid(dataReader.Rows[i][2] + "");
                model.TableName = dataReader.Rows[i][3] + "";
                model.FieldName = dataReader.Rows[i][4] + "";
                model.Value = dataReader.Rows[i][5] + "";
                List.Add(model);
            }
            return List;
        }
        /// <summary>
        /// 查询所有记录
        /// </summary>
        public List<RoadFlow.Data.Model.WorkFlowData> GetAll()
        {
            string sql = "SELECT * FROM WorkFlowData";
            var dataReader = dbHelper.GetDataReader(sql);
            List<RoadFlow.Data.Model.WorkFlowData> List = DataReaderToList(dataReader);
            return List;
        }
        /// <summary>
        /// 查询记录数
        /// </summary>
        public long GetCount()
        {
            string sql = "SELECT COUNT(*) FROM WorkFlowData";
            long count;
            return long.TryParse(dbHelper.GetFieldValue(sql), out count) ? count : 0;
        }
        /// <summary>
        /// 根据主键查询一条记录
        /// </summary>
        public RoadFlow.Data.Model.WorkFlowData Get(Guid id)
        {
            string sql = "SELECT * FROM WorkFlowData WHERE ID=@ID";
            MySqlParameter[] parameters = new MySqlParameter[]{
                new MySqlParameter("@ID", MySqlDbType.VarChar, 50){ Value = id }
            };
            var dataReader = dbHelper.GetDataReader(sql, parameters);
            List<RoadFlow.Data.Model.WorkFlowData> List = DataReaderToList(dataReader);
            return List.Count > 0 ? List[0] : null;
        }


        /// <summary>
        /// 查询一个实例ID所有记录
        /// </summary>
        public List<RoadFlow.Data.Model.WorkFlowData> GetAll(Guid instanceID)
        {
            string sql = "SELECT * FROM WorkFlowData WHERE InstanceID=@InstanceID";
            MySqlParameter[] parameters = new MySqlParameter[]{
                new MySqlParameter("@InstanceID", MySqlDbType.VarChar, 50){ Value = instanceID }
            };
            var dataReader = dbHelper.GetDataReader(sql, parameters);
            List<RoadFlow.Data.Model.WorkFlowData> List = DataReaderToList(dataReader);
            return List;
        }
    }
}