using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Extensometer.Data;
using Extensometer.Model;
using Extensometer.Model.ResultModel;
using Microsoft.Office.Interop.Excel;

namespace Extensometer.BLL
{
    public class ObjDataOperationClass
    {
        private static ObjDataOperationClass ObjDataOperation = new ObjDataOperationClass();
        private ObjDataOperationClass()
        { }
        public static ObjDataOperationClass GetObjDataOperationClass()
        {
            return ObjDataOperation;
        }
        private string ObjDbPath = string.Empty;

        /// <summary>
        /// 创建
        /// </summary>
        /// <param name="DbPath"></param>
        public void CreatObjDbFile(string DbPath)
        {
            using (var Db = new ObjectDBTable(DbPath))
            {
                ObjDbPath = DbPath;
            }
        }

        /// <summary>
        /// 加载
        /// </summary>
        /// <param name="DbPath"></param>
        public void LoadObjDbFile(string DbPath)
        {
            ObjDbPath = DbPath;
            LoadDll();
        }

        public void LoadDll()
        {
            Thread thread = new Thread(()=> {
                using (var Db = new ObjectDBTable(ObjDbPath))
                {
                }
            });
            thread.Start();
        }
        /// <summary>
        /// 全查询
        /// </summary>
        public List<ObjectData> CheckObjDb()
        {
            List<ObjectData> result = new List<ObjectData>();
            using (var Db = new ObjectDBTable(ObjDbPath))
            {
                result = Db.ObjectDatas.OrderBy(e => e.GaugeLeng).ToList();
            }
            return result;
        }

        /// <summary>
        /// 添加一条数据
        /// </summary>
        /// <param name="objectData"></param>
        /// <returns></returns>
        public ResultModel InsertObjDb(ObjectData objectData)
        {
            ResultModel result = new ResultModel();
            using (var Db = new ObjectDBTable(ObjDbPath))
            {
                if(Db.Insert(objectData)>0)
                {
                    result.ErrCode = ErrCodeList.Success;
                    result.ErrMessage = "添加成功";
                }
            }
            return result;
        }
        /// <summary>
        /// List<ObjectData>转成Exl表格
        /// </summary>
        /// <param name="list"></param>
        /// <param name="FilePath"></param>
        /// <returns></returns>
        public ResultModel DataExport(List<ObjectData> list,string FilePath)
        {
            ResultModel resultModel = new ResultModel();
            if (list.Count > 0)
            {
                object misValue = Missing.Value;
                Application xlApp = new Application();
                Workbook xlWorkBook = xlApp.Workbooks.Add(misValue);
                Worksheet xlWorkSheet = (Worksheet)xlWorkBook.Worksheets.get_Item(1);

                PropertyInfo[] props = GetPropertyInfoArray();
                for (int i = 0; i < props.Length; i++)
                {
                    xlWorkSheet.Cells[1, i + 1] = props[i].Name; //write the column name
                }
                for (int i = 0; i < list.Count; i++)
                {
                    xlWorkSheet.Cells[i + 2, 1] = list[i].GaugeLeng.ToString();
                    xlWorkSheet.Cells[i + 2, 2] = list[i].Time.ToString();
                    xlWorkSheet.Cells[i + 2, 3] = list[i].Point1x.ToString();
                    xlWorkSheet.Cells[i + 2, 4] = list[i].Point1y.ToString();
                    xlWorkSheet.Cells[i + 2, 5] = list[i].Point2x.ToString();
                    xlWorkSheet.Cells[i + 2, 6] = list[i].Point2y.ToString();
                    xlWorkSheet.Cells[i + 2, 7] = list[i].StrainValue.ToString();
                    xlWorkSheet.Cells[i + 2, 8] = list[i].Distance.ToString();
                    xlWorkSheet.Cells[i + 2, 9] = list[i].Displacement.ToString();
                    xlWorkSheet.Cells[i + 2, 10] = list[i].ForceValue.ToString();
                }
                try
                {
                    xlWorkBook.SaveAs(FilePath, XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue);
                    xlWorkBook.Close(true, misValue, misValue);
                    xlApp.Quit();
                }
                catch
                { }
            }
            return resultModel;
        }

        /// <summary>
        /// 查询数据库路径是否为空
        /// </summary>
        /// <returns></returns>
        public ResultModel CheckDataPathIsEmpty()
        {
            ResultModel resultModel = new ResultModel();
            try
            {
                if(string.IsNullOrEmpty(ObjDbPath))
                {
                    resultModel.ErrCode = ErrCodeList.PathEmpty;
                    resultModel.ErrMessage = "数据路径为空";
                }
                else
                {
                    resultModel.ErrCode = ErrCodeList.Success;
                    resultModel.ErrMessage = "";
                }
            }
            catch
            {
                resultModel.ErrCode = ErrCodeList.OtherErr;
                resultModel.ErrMessage = "未知错误";
            }
            return resultModel;
        }

        /// <summary>
        /// 反射获取类型的所有属性
        /// </summary>
        /// <returns></returns>
        private PropertyInfo[] GetPropertyInfoArray()
        {
            PropertyInfo[] props = null;
            try
            {
                Type type = typeof(ObjectData);
                object obj = Activator.CreateInstance(type);
                props = type.GetProperties(BindingFlags.Public | BindingFlags.Instance);
            }
            catch
            { }
            return props;
        }
    }
}