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 Telerik.Web.UI;

namespace VRS.Management.VSAT
{
    public partial class ExamTheoryBase_Add_Custom : BasePage
    {
        DataService.BLL.pro_exam_batch bll = new DataService.BLL.pro_exam_batch();

        DataService.BLL.admin_log log = new DataService.BLL.admin_log();
        DataService.BLL.admin_user bll_user = new DataService.BLL.admin_user();
        DataService.BLL.pro_theory_base bll_theory_base = new DataService.BLL.pro_theory_base();

        DataService.BLL.pro_theory_base_item bll_theory_base_item = new DataService.BLL.pro_theory_base_item();
        protected override void Page_Load(object sender, EventArgs e)
        {
            base.Page_Load(sender, e);
            if (!IsPostBack)
            {
                //var user = DataService.BLL.admin_user.load_login();
                //var user_login = bll_user.GetModel(user.user_id);


                //DataLoad();

                BindDeviceType("TheoryBaseKnow", dp_know, "");

            }
        }

        public void DataLoad()
        {
            var list = bll_theory_base.GetModelList("").ToList();

            RadListBoxDestination.DataSource = list;
            RadListBoxDestination.DataValueField = "id";
            RadListBoxDestination.DataTextField = "question";
            RadListBoxDestination.DataSortField = "question";
            RadListBoxDestination.DataBind();
        }

        protected void RadListBoxDestination_Reordered(object sender, RadListBoxEventArgs e)
        {
            RadListBoxDestination.DataBind();
            ReorderAZ();
        }

        protected void RadListBoxDestination_Deleted(object sender, RadListBoxEventArgs e)
        {
            span_name.InnerHtml = "";
            RadListBoxDestination.DataBind();
            ReorderAZ();
        }

        protected void RadListBoxDestination_Deleting(object sender, RadListBoxDeletingEventArgs e)
        {
            if (RadListBoxDestination.Items.Count <= 2)
            {
                span_name.InnerHtml = "至少有两个选项！";
                e.Cancel = true;
            }

        }

        //添加单个选项
        protected void btnAddItem_Click(object sender, EventArgs e)
        {
            /*
            var item = new RadListBoxItem();
            item.Text = txt_additem.Text.Trim();
            var addItem = new RadListBoxItem(item.Text, item.Text);
            RadListBoxDestination.Items.Add(addItem);

            var added_index = addItem.Index;

            RadioButtonList radbuttonlist = addItem.FindControl("RadioButtonList_Answer") as RadioButtonList;
            if (null != radbuttonlist)
            {
                radbuttonlist.SelectedValue = RadioButtonList_answer.SelectedValue;
            }
            */

            var kind = dp_kind.SelectedValue;
            if (string.IsNullOrEmpty(kind))
            {
                span_name.InnerHtml = "题目类型不能为空！";
                return;
            }
            if (kind == "简答题" || kind == "填空题")
            {
                span_name.InnerHtml = "该题目类型不能添加选项！";
                return;
            }
            if (kind == "判断题")
            {
                if (RadListBoxDestination.Items.Count >= 2)
                {
                    span_name.InnerHtml = "判断题只有两个选项！";
                    return;
                }
            }
            else if (kind == "单选题")
            {

            }
            else if (kind == "多选题")
            {

            }

            span_name.InnerHtml = "";

            AddNewItem();
            RadListBoxDestination.DataBind();
        }

        /// <summary>
        /// 更新选项值
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void option_name_TextChanged(object sender, EventArgs e)
        {
            var txtBox = sender as RadTextBox;
            var rad_item = txtBox.Parent as RadListBoxItem;
            if (null != rad_item)
            {
                rad_item.Text = txtBox.Text.Trim();
            }
        }

        protected void btnSure_Click(object sender, EventArgs e)
        {
            btnSure.Enabled = false;
            DataService.Model.pro_theory_base model = new DataService.Model.pro_theory_base();
            var user = DataService.BLL.admin_user.load_login();
            if (string.IsNullOrEmpty(dp_kind.SelectedValue))
            {
                RadAjaxManager1.Alert("题目类型不能为空！");
                btnSure.Enabled = true;
                return;
            }

            if (string.IsNullOrEmpty(question_name.Text.Trim()))
            {
                RadAjaxManager1.Alert("题干不能为空！");
                btnSure.Enabled = true;
                return;
            }

            if (string.IsNullOrEmpty(dp_know.SelectedValue))
            {
                RadAjaxManager1.Alert("知识领域不能为空！");
                btnSure.Enabled = true;
                return;
            }

            int right_count = 0;
            var questionTK = question_name.Text.Trim();
            var answerTK = answer_write.Text.Trim();
            List<string> list_answer = new List<string>();

            if (dp_kind.SelectedValue != "简答题" && dp_kind.SelectedValue != "填空题")
            {
                var flag = ExamTheoryBase_Edit_Custom.CheckRightAnswerCount(RadListBoxDestination, ref right_count, list_answer);
                if (!flag)
                {
                    RadAjaxManager1.Alert("选项值不能为空！");
                    btnSure.Enabled = true;
                    return;
                }
            }

            var total_count = RadListBoxDestination.Items.Count;
            //判断题、单选题、多选题
            if (dp_kind.SelectedValue == "判断题")
            {
                if (total_count != 2)
                {
                    RadAjaxManager1.Alert("判断题只有两个选项！");
                    btnSure.Enabled = true;
                    return;
                }
                if (right_count != 1)
                {
                    RadAjaxManager1.Alert("判断题只有1个选项答案！");
                    btnSure.Enabled = true;
                    return;
                }
            }
            else if (dp_kind.SelectedValue == "单选题")
            {
                if (total_count < 2)
                {
                    RadAjaxManager1.Alert("单选题至少两个选项！");
                    btnSure.Enabled = true;
                    return;
                }
                if (right_count != 1)
                {
                    RadAjaxManager1.Alert("单选题只有1个选项答案！");
                    btnSure.Enabled = true;
                    return;
                }
            }
            else if (dp_kind.SelectedValue == "多选题")
            {
                if (total_count < 2)
                {
                    RadAjaxManager1.Alert("多选题至少两个选项！");
                    btnSure.Enabled = true;
                    return;
                }
                if (right_count < 2)
                {
                    RadAjaxManager1.Alert("多选题至少2个选项答案！");
                    btnSure.Enabled = true;
                    return;
                }
            }
            else if (dp_kind.SelectedValue == "简答题")
            {
                var answer = answer_write.Text.Trim();
                if (string.IsNullOrEmpty(answer))
                {
                    RadAjaxManager1.Alert("简答题答案不能为空！");
                    btnSure.Enabled = true;
                    return;
                }
            }
            else if (dp_kind.SelectedValue == "填空题")
            {
                var answer = answer_write.Text.Trim();
                if (string.IsNullOrEmpty(answer))
                {
                    RadAjaxManager1.Alert("填空题答案不能为空！");
                    btnSure.Enabled = true;
                    return;
                }

                var line2 = "__";

                questionTK = questionTK.Replace("__________", line2)
                                                 .Replace("_________", line2)
                                                 .Replace("________", line2)
                                                 .Replace("_______", line2)
                                                 .Replace("______", line2)
                                                .Replace("_____", line2)
                                                .Replace("____", line2)
                                                .Replace("___", line2);
                // var question_array = question.Split(new string[] { line2 }, StringSplitOptions.RemoveEmptyEntries);
                var question_count = CountSubstringOccurrences(questionTK, line2);


                answerTK = answerTK.Replace("__________", line2)
                                               .Replace("_________", line2)
                                               .Replace("________", line2)
                                               .Replace("_______", line2)
                                               .Replace("______", line2)
                                              .Replace("_____", line2)
                                              .Replace("____", line2)
                                              .Replace("___", line2);
                var answer_array = answerTK.Split(new string[] { line2 }, StringSplitOptions.None);

                if (question_count != answer_array.Length)
                {
                    RadAjaxManager1.Alert(string.Format("填空题空格数：{0} ,与答案数：{1} 不一致！", question_count, answer_array.Length));
                    btnSure.Enabled = true;
                    return;
                }
            }



            var id = BasePage.GetId();
            model.id = id;

            model.target = dp_know.SelectedValue;
            model.kind = dp_kind.SelectedValue;
            model.question = question_name.Text.Trim();
            model.create_time = DateTime.Now;
            model.create_by = user.user_id;
            //model.r1 = r1.Text.Trim();//备注
            if (dp_kind.SelectedValue == "填空题")
            {
                model.question = questionTK;
                model.answer = answerTK;
            }
            else if (dp_kind.SelectedValue == "简答题")
            {
                model.answer = answer_write.Text.Trim();

            }
            else //其它题型
            {
                model.answer = string.Join(",", list_answer);
            }


            int index = 1;
            var now = DateTime.Now;
            Dictionary<int, string> dic = new Dictionary<int, string>();
            string alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
            var length = alphabet.Length;
            for (int i = 0; i < 26; i++)
            {
                dic.Add(i, alphabet.Substring(i, 1));
            }

            if (bll_theory_base.Add(model))
            {
                log.write_log("添加题目成功。" + "名称：" + model.question + "，id：" + model.id);

                for (int i = 0; i < RadListBoxDestination.Items.Count; i++)
                {
                    var list_item = RadListBoxDestination.Items[i];
                    var item = new DataService.Model.pro_theory_base_item();
                    item.id = BasePage.GetNextId(id, index++);
                    item.theory_base_id = id;
                    item.no = (i + 1);
                    if (dic.ContainsKey(i))
                    {
                        item.item_letter = dic[i];
                    }
                    item.create_by = user.user_id;
                    item.create_time = now;
                    item.item = list_item.Text;
                    RadTextBox box = list_item.FindControl("option_name") as RadTextBox;
                    if (null != box)
                    {

                    }

                    RadioButtonList radbuttonlist = list_item.FindControl("RadioButtonList_Answer") as RadioButtonList;
                    if (null != radbuttonlist)
                    {
                        item.is_answer = int.Parse(radbuttonlist.SelectedValue);
                    }

                    bll_theory_base_item.Add(item);
                }
                RadAjaxManager1.ResponseScripts.Add("alert('添加题目成功！');CloseAndRebind();");
            }
            else
            {
                RadAjaxManager1.Alert("添加题目失败！");
                btnSure.Enabled = true;
            }
        }

        public static int CountSubstringOccurrences(string str, string substr)
        {
            int index = 0;
            int count = 0;
            while ((index = str.IndexOf(substr, index)) != -1)
            {
                count++;
                index += substr.Length;
            }
            return count;
        }




        /// <summary>
        /// 旧有添加
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        protected void btnSure_Click_old(object sender, EventArgs e)
        {

            DataService.Model.pro_theory_base model = new DataService.Model.pro_theory_base();
            var user = DataService.BLL.admin_user.load_login();
            if (string.IsNullOrEmpty(dp_kind.SelectedValue))
            {
                RadAjaxManager1.Alert("题目类型不能为空！");
                return;
            }

            if (string.IsNullOrEmpty(question_name.Text.Trim()))
            {
                RadAjaxManager1.Alert("题干不能为空！");
                return;
            }


            if (dp_kind.SelectedValue == "简答题")
            {
                if (string.IsNullOrEmpty(anwser_jianda.Text.Trim()))
                {
                    RadAjaxManager1.Alert("简答题答案不能为空！");
                    return;
                }
            }
            else
            {
                if (dp_answer.CheckedItems.Count <= 0)
                {
                    RadAjaxManager1.Alert("请选择答案！");
                    return;
                }
            }


            model.id = BasePage.GetId();
            model.kind = dp_kind.SelectedValue;
            model.question = question_name.Text.Trim();


            model.create_time = DateTime.Now;
            model.create_by = user.user_id;
            model.r1 = r1.Text.Trim();

            if (dp_kind.SelectedValue == "简答题")
            {
                model.answer = anwser_jianda.Text.Trim();
                model.option_a = "";
                model.option_b = "";

            }
            else
            {
                var array = dp_answer.CheckedItems.Select(s => s.Text).OrderBy(s => s).ToArray();
                model.answer = string.Join(",", array);
                model.option_a = option_a.Text.Trim();
                model.option_b = option_b.Text.Trim();

            }

            if (bll_theory_base.Add(model))
            {
                log.write_log("添加题目成功。" + "名称：" + model.question + "，id：" + model.id);
                RadAjaxManager1.ResponseScripts.Add("alert('添加成功！');CloseAndRebind();");
            }
            else
            {
                RadAjaxManager1.Alert("添加失败！");
            }
        }


        protected void btnRowEdit_Click(object sender, EventArgs e)
        {
            var item = sender as LinkButton;
            var rad_item = item.Parent as RadListBoxItem; //item
            //var rad_list = item.Parent.Parent; //radlist
            var text = rad_item.Text;
            var value = rad_item.Value;

            var txtbox = rad_item.FindControl("option_name") as RadTextBox;
            if (txtbox.Text != text)
            {
                rad_item.Text = txtbox.Text.Trim();
            }
        }

        protected void dp_kind_SelectedIndexChanged(object sender, DropDownListEventArgs e)
        {
            var kind = dp_kind.SelectedValue;
            if (kind == "单选题" || kind == "多选题")
            {
                //tr_items.Visible = true;
                //tr_answer.Visible = false;
                //hid_add.Value = "0";
                btnAddItem.Visible = true;
                answer_write.Text = "";
                answer_write.Enabled = false;
                if (RadListBoxDestination.Items.Count <= 3)
                {
                    RadListBoxDestination.Items.Clear();
                    AddNewItem();
                    AddNewItem();
                    AddNewItem();
                    AddNewItem();
                    RadListBoxDestination.DataBind();
                }
            }
            else if (kind == "判断题")
            {

                //tr_items.Visible = true;
                //tr_answer.Visible = false;
                //hid_add.Value = "0";
                btnAddItem.Visible = true;

                answer_write.Text = "";
                answer_write.Enabled = false;
                RadListBoxDestination.Items.Clear();
                //AddNewItem();
                //AddNewItem();
                AddNewItem("正确");
                AddNewItem("错误");

                RadListBoxDestination.DataBind();
            }
            else
            {
                // tr_items.Visible = false;
                // tr_answer.Visible = true;
                //hid_add.Value = "1";
                btnAddItem.Visible = false;

                answer_write.Enabled = true;
                RadListBoxDestination.Items.Clear();
                RadListBoxDestination.DataBind();
            }

         

            span_name.InnerHtml = "";
        }

        public void AddNewItem(string text = "")
        {
            Dictionary<int, string> dic = new Dictionary<int, string>();
            string alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
            var length = alphabet.Length;
            for (int i = 0; i < 26; i++)
            {
                dic.Add(i, alphabet.Substring(i, 1));
            }
            var item = new RadListBoxItem();
            // item.Text = txt_additem.Text.Trim(); //$$$$
            if (!string.IsNullOrEmpty(text))
            {
                item.Text = text;
            }
            else
            {
                item.Text = txt_additem.Text.Trim();
            }
            var addItem = new RadListBoxItem(item.Text, item.Text);
            RadListBoxDestination.Items.Add(addItem);

            var added_index = addItem.Index;

            Label labelAZ = addItem.FindControl("labelAZ") as Label;
            if (null != labelAZ)
            {
                if (dic.ContainsKey(added_index))
                {
                    labelAZ.Text = dic[added_index];
                }
            }
        }

        public void ReorderAZ()
        {
            Dictionary<int, string> dic = new Dictionary<int, string>();
            string alphabet = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
            var length = alphabet.Length;
            for (int i = 0; i < 26; i++)
            {
                dic.Add(i, alphabet.Substring(i, 1));
            }
            for (int i = 0; i < RadListBoxDestination.Items.Count; i++)
            {
                var item = RadListBoxDestination.Items[i];
                var added_index = item.Index;
                Label labelAZ = item.FindControl("labelAZ") as Label;
                if (null != labelAZ)
                {
                    if (dic.ContainsKey(added_index))
                    {
                        labelAZ.Text = dic[added_index];
                    }
                }
            }
        }

        #region

        public void upload_click(RadAsyncUpload Upload1, Image img)
        {
            if (Upload1.UploadedFiles.Count < 1)
            {
                RadAjaxManager1.Alert("未选择图片！");
                return;
            }

            var uploadFile = Upload1.UploadedFiles[0];
            var extension = uploadFile.GetExtension();
            var extension_list = new string[] { ".jpg", ".png", ".jpeg", ".bmp", ".gif" };
            if (!extension_list.Contains(extension))
            {
                RadAjaxManager1.Alert("文件格式错误！");
                return;
            }

            if (BasePage.SaveFile(uploadFile, Context, out string filePath))
            {
                img.ImageUrl = "~" + filePath;
            }
            else
            {
                RadAjaxManager1.Alert("上传失败！");
            }
        }

        public void Remove_Click(Image img)
        {
            if (!string.IsNullOrEmpty(img.ImageUrl))
            {
                string path = Server.MapPath(img.ImageUrl);
                if (File.Exists(path))
                {
                    File.Delete(path);
                }
                img.ImageUrl = "";
            }
        }

        #endregion


    }
}