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"];

                // 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 
                        RecordDate, 
                        COUNT(1) as TotalCount
                    FROM T_d_EmployInOutRecord 
                    WHERE ProjectId = @ProjectId 
                    AND RecordDate >= @StartDate 
                    AND 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 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 PostId = @WorkPostId";
                    parameters.Add(new SqlParameter("@WorkPostId", workPostId));
                }

                // 按日期分组并排序
                strSql += " GROUP BY RecordDate ORDER BY RecordDate";

                // 执行查询
                var dt = SQLHelper.GetDataTableRunText(strSql, parameters.ToArray());

                // 如果没有数据，显示提示信息
                if (dt.Rows.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, dt.Rows.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 (DataRow row in dt.Rows)
                {
                    if (row["RecordDate"] != DBNull.Value)
                    {
                        DateTime recordDate = Convert.ToDateTime(row["RecordDate"]);
                        int totalCount = Convert.ToInt32(row["TotalCount"]);
                        
                        Model.DataSourcePoint point = new Model.DataSourcePoint
                        {
                            PointText = recordDate.ToString("MM-dd"),
                            PointValue = totalCount.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);
            }
        }
    }
}