using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using BLL;
using System.Data;
using System.Data.SqlClient;

namespace FineUIPro.Web.JDGL.SGManPower
{
    public partial class ManPowerWorkChart : PageBase
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                // 初始化图表数据
                InitializeChartData();
            }
        }

        private void InitializeChartData()
        {
            try
            {
                // 获取查询参数
                string unitId = Request.Params["UnitId"];
                string startTime = Request.Params["StartTime"];
                string endTime = Request.Params["EndTime"];
                string workPostId = Request.Params["WorkPostId"];
                string unitWorkId = Request.Params["UnitWorkId"];

                // 检查必要参数
                if (string.IsNullOrEmpty(startTime) || string.IsNullOrEmpty(endTime))
                {
                    ShowNotify("缺少必要的参数，无法生成图表", MessageBoxIcon.Warning);
                    return;
                }

                DateTime startDate = Convert.ToDateTime(startTime);
                DateTime endDate = Convert.ToDateTime(endTime);

                // 使用原生SQL查询直接在数据库中进行聚合计算，提高性能
                string strSql = @"
                SELECT e.UnitId, e.PostId, e.RecordDate, p.WorkAreaId as UnitWorkId
                FROM T_d_EmployInOutRecord e INNER JOIN SitePerson_Person p ON e.IDCardNo = p.IdentityCard AND e.ProjectId = p.ProjectId
                WHERE e.PostId IS NOT NULL AND e.PostId != '' 
                AND e.ProjectId = @ProjectId 
                AND e.RecordDate >= @StartDate 
                AND e.RecordDate <= @EndDate";

                var parameters = new List<SqlParameter>
                {
                    new SqlParameter("@ProjectId", this.CurrUser.LoginProjectId),
                    new SqlParameter("@StartDate", startDate),
                    new SqlParameter("@EndDate", endDate)
                };

                // 添加单位筛选条件
                if (!string.IsNullOrEmpty(unitId) && unitId != Const._Null)
                {
                    strSql += " AND e.UnitId = @UnitId";
                    parameters.Add(new SqlParameter("@UnitId", unitId));
                }

                // 添加岗位筛选条件
                if (!string.IsNullOrEmpty(workPostId) && workPostId != Const._Null)
                {
                    strSql += " AND e.PostId = @WorkPostId";
                    parameters.Add(new SqlParameter("@WorkPostId", workPostId));
                }

                // 执行查询
                var dt = SQLHelper.GetDataTableRunText(strSql, parameters.ToArray());
                
                // 创建一个新的DataTable来存储处理后的数据
                DataTable processedDt = dt.Clone();
                foreach (System.Data.DataRow row in dt.Rows)
                {
                    string ids = row["UnitWorkId"] != DBNull.Value ? row["UnitWorkId"].ToString() : string.Empty;
                    if (!string.IsNullOrEmpty(ids))
                    {
                        string[] unitWorkIdArray = ids.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
                        foreach (string id in unitWorkIdArray)
                        {
                            // 往processedDt里面添加数据，每个UnitWorkId一行
                            DataRow newRow = processedDt.NewRow();
                            newRow["UnitId"] = row["UnitId"];
                            newRow["PostId"] = row["PostId"];
                            newRow["RecordDate"] = row["RecordDate"];
                            newRow["UnitWorkId"] = id.Trim();
                            processedDt.Rows.Add(newRow);
                        }
                    }
                    else
                    {
                        DataRow newRow = processedDt.NewRow();
                        newRow["UnitId"] = row["UnitId"];
                        newRow["PostId"] = row["PostId"];
                        newRow["RecordDate"] = row["RecordDate"];
                        newRow["UnitWorkId"] = string.Empty;
                        processedDt.Rows.Add(newRow);
                    }
                }
            
                // 确定要用于后续处理的数据源
                IEnumerable<DataRow> dataSource = processedDt.AsEnumerable();
                
                // 如果选择了特定的装置进行筛选
                if (!string.IsNullOrEmpty(unitWorkId) && unitWorkId != Const._Null)
                {
                    dataSource = dataSource.Where(x => x["UnitWorkId"] != DBNull.Value && x["UnitWorkId"].ToString() == unitWorkId);
                }
                
                //针对dt中的数据进行分组
                var data = dataSource
                    .GroupBy(row => new { 
                        RecordDate = row["RecordDate"] 
                    }).Select(group => new
                    {
                        RecordDate = group.Key.RecordDate,
                        RecordCount = group.Count()
                    }).ToList();
                

                // 如果没有数据，显示提示信息
                if (data.Count == 0)
                {
                    ShowNotify("在指定时间范围内没有找到人力统计数据", MessageBoxIcon.Warning);
                    return;
                }

                // 根据数据点数量动态调整图表宽度，确保每个数据点有足够的显示空间
                int chartWidth = Math.Max(1000, data.Count * 50); // 每个数据点至少50像素宽，最小1000像素

                // 创建图表数据对象
                Model.DataSourceChart dataSourceChart = new Model.DataSourceChart
                {
                    Title = "现场考勤人力统计图表",
                    ChartType = System.Web.UI.DataVisualization.Charting.SeriesChartType.Column,
                    Width = chartWidth,
                    Height = 500,
                    IsNotEnable3D = false
                };

                // 创建数据系列
                Model.DataSourceTeam dataSourceTeam = new Model.DataSourceTeam
                {
                    DataPointName = "人员数量",
                    DataSourcePoints = new List<Model.DataSourcePoint>()
                };

                // 添加数据点
                foreach (var item in data)
                {
                    if (item.RecordDate != null)
                    {
                        DateTime recordDate = Convert.ToDateTime(item.RecordDate);
                        
                        Model.DataSourcePoint point = new Model.DataSourcePoint
                        {
                            PointText = recordDate.ToString("MM-dd"),
                            PointValue = item.RecordCount.ToString()
                        };
                        dataSourceTeam.DataSourcePoints.Add(point);
                    }
                }

                dataSourceChart.DataSourceTeams = new List<Model.DataSourceTeam> { dataSourceTeam };

                // 生成图表
                Chart1.CreateChart(dataSourceChart);
            }
            catch (Exception ex)
            {
                ShowNotify($"生成图表时发生错误: {ex.Message}", MessageBoxIcon.Error);
            }
        }
    }
}