using System;
using System.Collections.Generic;
using System.Text;
using System.Data;
using System.Reflection;
using DBaoBookingManagement.DataAccess;
using DBaoBookingManagement.Entity;

namespace DBaoBookingManagement.BusinessLogic
{
    /// <summary>
    /// 對游客類型進行業務邏輯操作
    /// </summary>
    public class TouristTypeBusiness : Business
    {
        private TouristTypeAccessor tta = new TouristTypeAccessor();

        private static TouristTypeBusiness instance = null;
        private TouristTypeBusiness() { }//私有構造函數

        /// <summary>
        /// 獲取TouristTypeBusiness對象
        /// </summary>
        /// <returns></returns>
        public static TouristTypeBusiness GetInstance()
        {
            if (instance == null)
            {
                instance = new TouristTypeBusiness();
            }
            return instance;
        }

        /// <summary>
        /// 根據游客類型ID查詢游客類型
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public TouristType QueryById(int id)
        {
            TouristType entity = null;
            try
            {
                DataTable dt = tta.QueryById(id);
                if (dt.Rows.Count > 0)
                {
                    entity = new TouristType();
                    PropertyInfo[] props = typeof(TouristType).GetProperties();
                    for (int j = 0; j < props.Length; j++)
                    {
                        string columnName = props[j].Name;
                        object value = dt.Rows[0][columnName];
                        props[j].SetValue(entity, value, null);
                    }
                }
                return entity;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 根據游客類型名稱查詢游客類型
        /// </summary>
        /// <param name="typeName"></param>
        /// <returns></returns>
        public TouristType QueryByName(string typeName)
        {
            TouristType entity = null;
            try
            {
                DataTable dt = tta.QueryByName(typeName);
                if (dt.Rows.Count > 0)
                {
                    entity = new TouristType();
                    PropertyInfo[] props = typeof(TouristType).GetProperties();
                    for (int j = 0; j < props.Length; j++)
                    {
                        string columnName = props[j].Name;
                        object value = dt.Rows[0][columnName];
                        props[j].SetValue(entity, value, null);
                    }
                }
                return entity;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 查詢所有游客類型
        /// </summary>
        /// <returns></returns>
        public TouristType[] QueryAll()
        {
            TouristType[] entityList = null;
            try
            {
                DataTable dt = tta.QueryAll();
                entityList = FillEntityList(entityList, dt);
                return entityList;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 插入游客類型
        /// </summary>
        /// <param name="typeName"></param>
        /// <returns></returns>
        public bool Insert(string typeName)
        {
            TouristType entity=new TouristType();
            entity.TypeName = typeName;
            try
            {
                return tta.Insert(entity);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 根據游客類型ID刪除游客類型
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        public bool DeleteById(int id)
        {
            try
            {
                return tta.DeleteById(id);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        /// <summary>
        /// 修改游客類型
        /// </summary>
        /// <param name="id"></param>
        /// <param name="typeName"></param>
        /// <returns></returns>
        public bool Update(int id,string typeName)
        {
            TouristType entity=new TouristType();
            entity.TypeId = id;
            entity.TypeName = typeName;
            try
            {
                return tta.Update(entity);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }

        //填充實體類列表
        private TouristType[] FillEntityList(TouristType[] entityList, DataTable dt)
        {
            if (dt.Rows.Count > 0)
            {
                entityList = new TouristType[dt.Rows.Count];

                //用反射給實體類賦值
                for (int i = 0; i < entityList.Length; i++)
                {
                    TouristType entity = new TouristType();
                    PropertyInfo[] props = typeof(TouristType).GetProperties();
                    for (int j = 0; j < props.Length; j++)
                    {
                        string columnName = props[j].Name;
                        object value = dt.Rows[i][columnName];
                        props[j].SetValue(entity, value, null);
                    }
                    entityList[i] = entity;
                }
            }
            return entityList;
        }
    }
}