using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using WebLib;
using Newtonsoft.Json;

namespace Education.Forms.領據系統
{
    public partial class 非講師 : FormBase
    {
        private DAC_非講師 Dao非講師;

        private bool canExport = false;

        protected override void OnInit(EventArgs e)
        {
            base.OnInit(e);
            Dao非講師 = new DAC_非講師(conn);
        }

        protected void Page_Load(object sender, EventArgs e)
        {
            FunctionName = "非講師/名人基本資料";

            // 設定 Form 的 enctype 為 multipart/form-data，才能上傳檔案
            Page.Form.Attributes["enctype"] = "multipart/form-data";

            Form_View = fv非講師;
            Grid_View = gv非講師;
            FormView_DataSource = ds非講師Form;
            GridView_DataSource = ds非講師Grid;

            AddTabButton(MultiView1, 0, btnTab1);
            AddTabButton(MultiView1, 1, btnTab2);
            AddTabButton(MultiView1, 2, btnTab3);
            AddTabButton(MultiView1, 3, btnTab4);

            RegisterPostbackTrigger(btnExport);
            RegisterPostbackTrigger(btn下載範本);
            RegisterPostbackTrigger(btn匯入);
            RegisterPostbackTrigger(btn上傳檔案);

            InitJSVar();
            GetRights();

            if (!IsPostBack)
            {
                ActivateTab(MultiView1, 0);
            }
            else
            {
                Grid_View.DataBind();
                Form_View.DataBind();
            }
        }

        protected void GetRights()
        {
            canExport = new MWEB().CheckRight(ProgramID.匯出基本資料, WRightName.Execute, UserId);
            hfCanExport.Value = (canExport ? "Y" : "");
        }

        protected void btnSearch_Click(object sender, EventArgs e)
        {
            Grid_View.PageIndex = 0;
            Grid_View.DataBind();
        }

        protected void btnClear_Click(object sender, EventArgs e)
        {
            txt編號_Search.Text = "";
            txt姓名_Search.Text = "";
            txt身分證字號_Search.Text = "";
            txt聯絡電話_Search.Text = "";
            txt電子郵件_Search.Text = "";
        }

        protected override void GridView_SelectedIndexChanged(object sender, EventArgs e)
        {
            base.GridView_SelectedIndexChanged(sender, e);
            ActivateTab(MultiView1, 1);
        }

        protected void cv電子郵件_ServerValidate(object source, ServerValidateEventArgs args)
        {
            args.IsValid = IsValidEmail(args.Value);
        }

        protected void cv身分證字號_ServerValidate(object source, ServerValidateEventArgs args)
        {
            string 編號 = Form_View.DataItem == null ? "" : (Form_View.DataItem as 非講師Item).編號;
            args.IsValid = !Dao非講師.Is身份證字號Dulicate(編號, args.Value);
        }

        protected void ds非講師Grid_ObjectCreating(object sender, ObjectDataSourceEventArgs e)
        {
            e.ObjectInstance = Dao非講師;
        }

        protected void ds非講師Form_ObjectCreating(object sender, ObjectDataSourceEventArgs e)
        {
            e.ObjectInstance = Dao非講師;
        }

        protected void btnExport_Click(object sender, EventArgs e)
        {
            if (!canExport)
            {
                return;
            }

            var export_columns = new List<string>();
            for (var i = 0; i < cblExport.Items.Count; i++)
            {
                if (cblExport.Items[i].Selected)
                    export_columns.Add(cblExport.Items[i].Value);
            }

            var report = new Report.非講師匯出()
            {
                data = Dao非講師.SelectPage(true, 0, Int32.MaxValue,
                    txt編號_Search.Text, txt姓名_Search.Text,
                    txt身分證字號_Search.Text, txt聯絡電話_Search.Text,
                    txt電子郵件_Search.Text),
                export_columns = export_columns
            };
            MemoryStream ms = report.DoReport();
            ResponseWriteStream(ms, String.Format("{0:yyyyMMdd_HHmmss}_非講師資料匯出.xlsx", PublicVariable.TaiwanNow));
        }

        protected void btn下載範本_Click(object sender, EventArgs e)
        {
            var ms = new 非講師匯入().ImportExample();
            ResponseWriteStream(ms, "非講師資料匯入範本.xlsx");
        }

        protected void btn匯入_Click(object sender, EventArgs e)
        {
            if (String.IsNullOrEmpty(DAC.GetString(Session["非講師匯入檔案"])))
            {
                ltl匯入結果.Text = "請先上傳匯入檔案";
                return;
            }
            try
            {
                var import = new 非講師匯入();
                import.Connection = conn;
                var importResult = import.Import<非講師Item>(
                    DAC.GetString(Session["非講師匯入檔案"]), 
                    out string message);
                ltl匯入結果.Text = message;
            }
            catch (Exception ex)
            {
                ltl匯入結果.Text = "資料匯入失敗: " + ex.Message;
            }
        }

        protected void btn上傳檔案_Click(object sender, EventArgs e)
        {
            // 檔案上傳
            if (fu匯入檔案.HasFile)
            {
                ltl檢查結果.Text = "";

                try
                {
                    var fileName = $"{PublicVariable.TaiwanNow:yyyyMMdd_HHmmss}_{fu匯入檔案.PostedFile.FileName}";
                    var fullFileName = Path.Combine(ImportBase.ImportFilePath, fileName);
                    fu匯入檔案.PostedFile.SaveAs(fullFileName);
                    Session["非講師匯入檔案"] = fullFileName;
                    var import = new 非講師匯入();
                    var checkErrors = import.Validate(fullFileName, typeof(非講師Item), out int rowCount);
                    if (checkErrors.Count == 0)
                    {
                        ltl檢查結果.Text = $"上傳檔案 {fu匯入檔案.PostedFile.FileName} 上傳成功並通過檢查<br/>共有 {rowCount} 筆資料<br/>請點擊匯入按鈕執行匯入。";
                    }
                    else
                    {
                        ltl檢查結果.Text = $"上傳檔案 {fu匯入檔案.PostedFile.FileName} 上傳成功，但有以下錯誤:<br/>{string.Join("<br/>", checkErrors.ToArray())}";
                    }
                }
                catch (Exception ex)
                {
                    ltl檢查結果.Text = "檔案上傳失敗: " + ex.Message;
                }
            }
            else
            {
                ltl檢查結果.Text = "請選擇要上傳的檔案";
            }
        }

        protected override void AfterChangeTab()
        {
            base.AfterChangeTab();
            InitJSVar();
        }

        private void InitJSVar()
        {
            if (Grid_View.SelectedDataKey != null)
            {
                var 講師編號 = DAC.GetString(Grid_View.SelectedDataKey["編號"]);
                var 講師姓名 = string.Empty;
                var 講師 = Dao非講師.SelectOne(講師編號).FirstOrDefault();
                if (講師 != null) 講師姓名 = 講師.姓名;
                ScriptManager.RegisterClientScriptBlock(Page, Page.GetType(), "Init",
                   $@"V人員類別 = '非講師'; V講師編號 = '{Grid_View.SelectedDataKey["編號"]}'; V講師姓名 = '{講師姓名}';", true);
            }
        }
    }
}