using BLL;
using MiniExcelLibs;
using Model;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;

namespace FineUIPro.Web.HJGL.InfoQuery
{
    public partial class PipeLengthOverview : PageBase
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                ddlPageSize.SelectedValue = Grid1.PageSize.ToString();
                InitTreeMenu();
            }
        }

        private void InitTreeMenu()
        {
            tvControlItem.Nodes.Clear();
            TreeNode civilNode = new TreeNode { NodeID = "1", Text = "建筑工程", Selectable = false };
            TreeNode installNode = new TreeNode { NodeID = "2", Text = "安装工程", Selectable = false, Expanded = true };
            tvControlItem.Nodes.Add(civilNode);
            tvControlItem.Nodes.Add(installNode);

            string projectId = CurrUser.LoginProjectId;
            // 管长识别表无项目归属，必须通过管线号关联项目管线，防止跨项目展示同名管线的识别结果。
            var recordCounts = (from pipeLength in Funs.DB.HJGL_DrawingRecognition_PipeLengths
                                join pipeline in Funs.DB.HJGL_Pipeline on pipeLength.Pipe_no equals pipeline.PipelineCode
                                where pipeline.ProjectId == projectId && pipeline.UnitWorkId != null
                                group pipeLength by pipeline.UnitWorkId into groupItem
                                select new { UnitWorkId = groupItem.Key, Count = groupItem.Count() }).ToDictionary(x => x.UnitWorkId, x => x.Count);
            var unitWorks = (from unitWork in Funs.DB.WBS_UnitWork
                             where unitWork.ProjectId == projectId && unitWork.SuperUnitWork == null && unitWork.UnitId != null && unitWork.ProjectType != null
                             orderby unitWork.UnitWorkCode
                             select unitWork).ToList();
            var unitIds = unitWorks.Where(x => x.UnitId != null).Select(x => x.UnitId).Distinct().ToList();
            var unitNames = (from unit in Funs.DB.Base_Unit where unitIds.Contains(unit.UnitId) select unit).ToDictionary(x => x.UnitId, x => x.UnitName);

            foreach (var unitWork in unitWorks)
            {
                int count = recordCounts.ContainsKey(unitWork.UnitWorkId) ? recordCounts[unitWork.UnitWorkId] : 0;
                TreeNode node = new TreeNode();
                node.NodeID = unitWork.UnitWorkId;
                node.Text = unitWork.UnitWorkName + "【" + count + "】管段";
                node.ToolTip = "施工单位：" + (unitNames.ContainsKey(unitWork.UnitId) ? unitNames[unitWork.UnitId] : "");
                node.EnableClickEvent = true;
                (unitWork.ProjectType == "1" ? civilNode : installNode).Nodes.Add(node);
            }
        }

        protected void tvControlItem_NodeCommand(object sender, TreeCommandEventArgs e)
        {
            Grid1.PageIndex = 0;
            BindGrid();
        }

        private void BindGrid()
        {
            string unitWorkId = tvControlItem.SelectedNodeID;
            if (string.IsNullOrEmpty(unitWorkId))
            {
                Grid1.RecordCount = 0;
                Grid1.DataSource = new List<HJGL_DrawingRecognition_PipeLengths>();
                Grid1.DataBind();
                return;
            }

            var query = ApplySort(GetCurrentQuery(unitWorkId));
            Grid1.RecordCount = query.Count();
            Grid1.DataSource = query.Skip(Grid1.PageIndex * Grid1.PageSize).Take(Grid1.PageSize).ToList();
            Grid1.DataBind();
        }

        /// <summary>
        /// 汇总当前WBS节点和页面筛选条件，保证列表与导出数据完全一致。
        /// </summary>
        private IQueryable<HJGL_DrawingRecognition_PipeLengths> GetCurrentQuery(string unitWorkId)
        {
            string pipeNo = txtPipeNo.Text.Trim();
            string dn = txtDn.Text.Trim();
            var query = from pipeLength in Funs.DB.HJGL_DrawingRecognition_PipeLengths
                        join pipeline in Funs.DB.HJGL_Pipeline on pipeLength.Pipe_no equals pipeline.PipelineCode
                        where pipeline.ProjectId == CurrUser.LoginProjectId && pipeline.UnitWorkId == unitWorkId
                        select pipeLength;
            if (!string.IsNullOrEmpty(pipeNo)) query = query.Where(x => x.Pipe_no.Contains(pipeNo));
            if (!string.IsNullOrEmpty(dn)) query = query.Where(x => x.Dn.Contains(dn));
            return query;
        }

        private IQueryable<HJGL_DrawingRecognition_PipeLengths> ApplySort(IQueryable<HJGL_DrawingRecognition_PipeLengths> query)
        {
            bool descending = Grid1.SortDirection == "DESC";
            switch (Grid1.SortField)
            {
                case "Pipe_page_no": return descending ? query.OrderByDescending(x => x.Pipe_page_no) : query.OrderBy(x => x.Pipe_page_no);
                case "Group_index": return descending ? query.OrderByDescending(x => x.Group_index) : query.OrderBy(x => x.Group_index);
                case "Pos_no": return descending ? query.OrderByDescending(x => x.Pos_no) : query.OrderBy(x => x.Pos_no);
                case "Length_mm": return descending ? query.OrderByDescending(x => x.Length_mm) : query.OrderBy(x => x.Length_mm);
                case "Dn": return descending ? query.OrderByDescending(x => x.Dn) : query.OrderBy(x => x.Dn);
                default: return descending ? query.OrderByDescending(x => x.Pipe_no) : query.OrderBy(x => x.Pipe_no);
            }
        }

        protected void btnQuery_Click(object sender, EventArgs e) { Grid1.PageIndex = 0; BindGrid(); }
        protected void Grid1_PageIndexChange(object sender, GridPageEventArgs e) { Grid1.PageIndex = e.NewPageIndex; BindGrid(); }
        protected void Grid1_Sort(object sender, GridSortEventArgs e) { Grid1.SortField = e.SortField; Grid1.SortDirection = e.SortDirection; BindGrid(); }
        protected void ddlPageSize_SelectedIndexChanged(object sender, EventArgs e) { Grid1.PageSize = Convert.ToInt32(ddlPageSize.SelectedValue); Grid1.PageIndex = 0; BindGrid(); }

        protected void btnOut_Click(object sender, EventArgs e)
        {
            string unitWorkId = tvControlItem.SelectedNodeID;
            if (string.IsNullOrEmpty(unitWorkId))
            {
                ShowNotify("请先选择WBS目录", MessageBoxIcon.Warning);
                return;
            }

            // 导出所有满足当前筛选条件的记录，不受列表分页大小限制。
            var data = ApplySort(GetCurrentQuery(unitWorkId)).Select(x => new
            {
                管线号 = x.Pipe_no,
                管线页码 = x.Pipe_page_no,
                分组序号 = x.Group_index,
                位置编号 = x.Pos_no,
                长度毫米 = x.Length_mm,
                公称直径DN = x.Dn
            }).ToList();
            string path = Path.Combine(Funs.RootPath, "File", "Excel", "Temp", "PipeLengthOverview" + DateTime.Now.ToString("yyyy-MM-dd-HH-mm-ss") + ".xlsx");
            MiniExcel.SaveAs(path, data);
            DownloadExcel(path, "管长信息总览.xlsx");
        }

        private void DownloadExcel(string path, string fileName)
        {
            FileInfo info = new FileInfo(path);
            System.Web.HttpContext.Current.Response.Clear();
            System.Web.HttpContext.Current.Response.ContentType = "application/x-zip-compressed";
            System.Web.HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
            System.Web.HttpContext.Current.Response.AddHeader("Content-Length", info.Length.ToString());
            System.Web.HttpContext.Current.Response.TransmitFile(path, 0, info.Length);
            System.Web.HttpContext.Current.Response.Flush();
            System.Web.HttpContext.Current.Response.Close();
            File.Delete(path);
        }
    }
}