using System;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
using System.IO;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using NPOI.SS.Util;
using NPOIBorderStyle = NPOI.SS.UserModel.BorderStyle;
using NPOIHorizontalAlignment = NPOI.SS.UserModel.HorizontalAlignment;

namespace WindowsFormsApp6
{
    public partial class MainForm : Form
    {
        private Form1 form1Instance;
        private Form2 form2Instance;
        private Form3 form3Instance;
        private System.Windows.Forms.Timer clockTimer;

        public MainForm()
        {
            InitializeComponent();
            InitializeClockTimer();
            InitializeTabControl();
            InitializeEmbeddedForms();
        }

        private void InitializeClockTimer()
        {
            clockTimer = new System.Windows.Forms.Timer();
            clockTimer.Interval = 1000;
            clockTimer.Tick += (s, e) => label2.Text = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
            clockTimer.Start();
        }

        private void InitializeTabControl()
        {
            tabControl1.SelectedIndexChanged += TabControl1_SelectedIndexChanged;
        }

        private void TabControl1_SelectedIndexChanged(object sender, EventArgs e)
        {
            UpdateTitleForCurrentTab();
            
            // 根据选中的 Tab 显示/隐藏切换布局按钮
            // 只有在 Form3 (Tab 2, index=2) 时显示切换按钮
            buttonToggleLayout.Visible = (tabControl1.SelectedIndex == 2);
            
            // 更新切换按钮的文本
            if (tabControl1.SelectedIndex == 2 && form3Instance != null)
            {
                UpdateToggleButtonText();
            }
        }

        private void UpdateTitleForCurrentTab()
        {
            switch (tabControl1.SelectedIndex)
            {
                case 0:
                    label1.Text = " 液体吸收时间测试报告";
                    break;
                case 1:
                    label1.Text = " 液体吸收量测试报告";
                    break;
                case 2:
                    label1.Text = " 液体芯吸速率测试报告";
                    break;
            }
        }

        private void InitializeEmbeddedForms()
        {
            form1Instance = new Form1();
            form1Instance.TopLevel = false;
            form1Instance.FormBorderStyle = FormBorderStyle.None;
            form1Instance.Dock = DockStyle.Fill;
            
            Panel panel1 = new Panel();
            panel1.Dock = DockStyle.Fill;
            panel1.Controls.Add(form1Instance.Controls["tableLayoutPanel1"].Controls["panel3"]);
            tabPage1.Controls.Add(panel1);
            form1Instance.Show();

            form2Instance = new Form2();
            form2Instance.TopLevel = false;
            form2Instance.FormBorderStyle = FormBorderStyle.None;
            form2Instance.Dock = DockStyle.Fill;
            
            Panel panel2 = new Panel();
            panel2.Dock = DockStyle.Fill;
            panel2.Controls.Add(form2Instance.Controls["tableLayoutPanel1"].Controls["panel3"]);
            tabPage2.Controls.Add(panel2);
            form2Instance.Show();

            form3Instance = new Form3();
            form3Instance.TopLevel = false;
            form3Instance.FormBorderStyle = FormBorderStyle.None;
            form3Instance.Dock = DockStyle.Fill;
            
            Panel panel3 = new Panel();
            panel3.Dock = DockStyle.Fill;
            panel3.Controls.Add(form3Instance.Controls["tableLayoutPanel1"].Controls["panel3"]);
            tabPage3.Controls.Add(panel3);
            form3Instance.Show();
        }

        private void buttonPrint_Click(object sender, EventArgs e)
        {
            MessageBox.Show("打印功能开发中", "提示");
        }

        private void buttonExport_Click(object sender, EventArgs e)
        {
            SaveFileDialog saveFileDialog = new SaveFileDialog
            {
                Filter = "Excel 文件 (*.xlsx)|*.xlsx",
                FileName = $"测试报告_{DateTime.Now:yyyyMMdd_HHmmss}",
                Title = "导出整合报告"
            };

            if (saveFileDialog.ShowDialog() == DialogResult.OK)
            {
                ExportIntegratedReport(saveFileDialog.FileName);
            }
        }

        private void button5_Click(object sender, EventArgs e)
        {
            switch (tabControl1.SelectedIndex)
            {
                case 0:
                    form1Instance.GenerateMockData();
                    break;
                case 1:
                    form2Instance.GenerateMockData();
                    break;
                case 2:
                    form3Instance.GenerateMockData();
                    break;
            }
        }

        private void buttonToggleLayout_Click(object sender, EventArgs e)
        {
            if (form3Instance != null)
            {
                // 调用 Form3 的公共切换方法
                form3Instance.ToggleTableLayout();
                
                // 更新按钮文本
                UpdateToggleButtonText();
            }
        }

        /// <summary>
        /// 更新切换按钮的文本
        /// </summary>
        private void UpdateToggleButtonText()
        {
            if (form3Instance != null)
            {
                // 使用公共方法获取布局状态
                bool isVertical = form3Instance.IsVerticalLayout();
                buttonToggleLayout.Text = isVertical ? "🔄 横向布局" : "🔄 纵向布局";
            }
        }

        private void ExportIntegratedReport(string filePath)
        {
            try
            {
                IWorkbook workbook = new XSSFWorkbook();
                CreateForm1Sheet(workbook);
                CreateForm2Sheet(workbook);
                CreateForm3Sheet(workbook);

                using (FileStream fs = new FileStream(filePath, FileMode.Create, FileAccess.Write))
                {
                    workbook.Write(fs);
                }

                MessageBox.Show($"导出成功：{filePath}", "成功");
            }
            catch (Exception ex)
            {
                MessageBox.Show($"导出失败：{ex.Message}", "错误");
            }
        }

        private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
        {
            clockTimer?.Stop();
            clockTimer?.Dispose();
            Application.Exit();
        }

        private void CreateForm1Sheet(IWorkbook workbook)
        {
            ISheet sheet = workbook.CreateSheet("液体吸收时间");
            var styles = CreateReportStyles(workbook);

            // 获取 Form1 的数据
            var sampleCountField = form1Instance.GetType()
                .GetField("currentSampleCount", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
            int sampleCount = sampleCountField != null ? (int)sampleCountField.GetValue(form1Instance) : 5;

            var dataTableField = form1Instance.GetType()
                .GetField("sampleDataTable", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
            DataTable dataTable = dataTableField?.GetValue(form1Instance) as DataTable;

            if (dataTable == null || dataTable.Rows.Count == 0)
            {
                // 创建空表格
                CreateEmptySheet(sheet, "液体吸收时间", sampleCount, styles);
                return;
            }

            int currentRow = 0;

            // 创建标题行
            IRow titleRow = sheet.CreateRow(currentRow++);
            ICell titleCell = titleRow.CreateCell(0);
            titleCell.SetCellValue("液体吸收时间");
            titleCell.CellStyle = styles.titleStyle;
            sheet.AddMergedRegion(new CellRangeAddress(0, 0, 0, sampleCount));
            titleRow.Height = 600;

            currentRow++; // 空行

            // 创建表头
            IRow headerRow = sheet.CreateRow(currentRow++);
            headerRow.Height = 400;
            ICell seqCell = headerRow.CreateCell(0);
            seqCell.SetCellValue("序号");
            seqCell.CellStyle = styles.headerStyle;

            for (int i = 1; i <= sampleCount; i++)
            {
                ICell cell = headerRow.CreateCell(i);
                cell.SetCellValue($"试样{i}");
                cell.CellStyle = styles.headerStyle;
            }

            // 填充数据行
            foreach (DataRow dataRow in dataTable.Rows)
            {
                string rowName = dataRow["序号"]?.ToString() ?? "";
                if (string.IsNullOrEmpty(rowName)) continue;

                IRow row = sheet.CreateRow(currentRow++);
                row.Height = 380;

                ICell nameCell = row.CreateCell(0);
                nameCell.SetCellValue(rowName);
                nameCell.CellStyle = styles.dataStyle;

                for (int i = 1; i <= sampleCount; i++)
                {
                    ICell cell = row.CreateCell(i);
                    if (dataTable.Columns.Contains($"试样{i}") && dataRow[$"试样{i}"] != DBNull.Value)
                    {
                        if (double.TryParse(dataRow[$"试样{i}"].ToString(), out double value))
                        {
                            cell.SetCellValue(value);
                        }
                    }
                    cell.CellStyle = styles.yellowStyle;
                }
            }

            // 设置列宽
            sheet.SetColumnWidth(0, 20 * 256);
            for (int i = 1; i <= sampleCount; i++)
            {
                sheet.SetColumnWidth(i, 15 * 256);
            }
        }

        private void CreateForm2Sheet(IWorkbook workbook)
        {
            ISheet sheet = workbook.CreateSheet("液体吸收量");
            var styles = CreateReportStyles(workbook);

            // 获取 Form2 的数据
            var sampleCountField = form2Instance.GetType()
                .GetField("currentSampleCount", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
            int sampleCount = sampleCountField != null ? (int)sampleCountField.GetValue(form2Instance) : 5;

            var dataTableField = form2Instance.GetType()
                .GetField("sampleDataTable", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
            DataTable dataTable = dataTableField?.GetValue(form2Instance) as DataTable;

            if (dataTable == null || dataTable.Rows.Count == 0)
            {
                CreateEmptySheet(sheet, "液体吸收量", sampleCount, styles);
                return;
            }

            int currentRow = 0;

            // 创建标题行
            IRow titleRow = sheet.CreateRow(currentRow++);
            ICell titleCell = titleRow.CreateCell(0);
            titleCell.SetCellValue("液体吸收量");
            titleCell.CellStyle = styles.titleStyle;
            sheet.AddMergedRegion(new CellRangeAddress(0, 0, 0, sampleCount));
            titleRow.Height = 600;

            currentRow++; // 空行

            // 创建表头
            IRow headerRow = sheet.CreateRow(currentRow++);
            headerRow.Height = 400;
            ICell seqCell = headerRow.CreateCell(0);
            seqCell.SetCellValue("序号");
            seqCell.CellStyle = styles.headerStyle;

            for (int i = 1; i <= sampleCount; i++)
            {
                ICell cell = headerRow.CreateCell(i);
                cell.SetCellValue($"试样{i}");
                cell.CellStyle = styles.headerStyle;
            }

            // 填充数据行
            foreach (DataRow dataRow in dataTable.Rows)
            {
                string rowName = dataRow["序号"]?.ToString() ?? "";
                if (string.IsNullOrEmpty(rowName)) continue;

                IRow row = sheet.CreateRow(currentRow++);
                row.Height = 380;

                ICell nameCell = row.CreateCell(0);
                nameCell.SetCellValue(rowName);
                nameCell.CellStyle = styles.dataStyle;

                for (int i = 1; i <= sampleCount; i++)
                {
                    ICell cell = row.CreateCell(i);
                    if (dataTable.Columns.Contains($"试样{i}") && dataRow[$"试样{i}"] != DBNull.Value)
                    {
                        object value = dataRow[$"试样{i}"];
                        if (value != null && double.TryParse(value.ToString(), out double numValue))
                        {
                            cell.SetCellValue(numValue);
                        }
                    }
                    cell.CellStyle = styles.yellowStyle;
                }
            }

            // 设置列宽
            sheet.SetColumnWidth(0, 25 * 256);
            for (int i = 1; i <= sampleCount; i++)
            {
                sheet.SetColumnWidth(i, 18 * 256);
            }
        }

        private void CreateForm3Sheet(IWorkbook workbook)
        {
            ISheet sheet = workbook.CreateSheet("液体芯吸速率");
            var styles = CreateReportStyles(workbook);

            // 获取 Form3 的数据
            var sampleCountField = form3Instance.GetType()
                .GetField("currentSampleCount", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
            int sampleCount = sampleCountField != null ? (int)sampleCountField.GetValue(form3Instance) : 5;

            var dataTableField = form3Instance.GetType()
                .GetField("sampleDataTable", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
            DataTable dataTable = dataTableField?.GetValue(form3Instance) as DataTable;

            if (dataTable == null || dataTable.Rows.Count == 0)
            {
                CreateEmptySheet(sheet, "液体芯吸速率", sampleCount, styles);
                return;
            }

            int currentRow = 0;

            // 创建标题行
            IRow titleRow = sheet.CreateRow(currentRow++);
            ICell titleCell = titleRow.CreateCell(0);
            titleCell.SetCellValue("液体芯吸速率");
            titleCell.CellStyle = styles.titleStyle;
            sheet.AddMergedRegion(new CellRangeAddress(0, 0, 0, sampleCount * 3));
            titleRow.Height = 600;

            currentRow++; // 空行

            // 创建第一级表头（试样1-N）
            IRow headerRow1 = sheet.CreateRow(currentRow++);
            headerRow1.Height = 400;
            
            ICell cell0 = headerRow1.CreateCell(0);
            cell0.SetCellValue("序号");
            cell0.CellStyle = styles.headerStyle;
            sheet.AddMergedRegion(new CellRangeAddress(currentRow - 1, currentRow, 0, 0));

            int colIndex = 1;
            for (int i = 1; i <= sampleCount; i++)
            {
                ICell cell = headerRow1.CreateCell(colIndex);
                cell.SetCellValue($"试样{i}");
                cell.CellStyle = styles.headerStyle;
                sheet.AddMergedRegion(new CellRangeAddress(currentRow - 1, currentRow - 1, colIndex, colIndex + 2));
                colIndex += 3;
            }

            // 创建第二级表头（1、2、3）
            IRow headerRow2 = sheet.CreateRow(currentRow++);
            headerRow2.Height = 400;
            
            colIndex = 1;
            for (int i = 1; i <= sampleCount; i++)
            {
                for (int j = 1; j <= 3; j++)
                {
                    ICell cell = headerRow2.CreateCell(colIndex++);
                    cell.SetCellValue(j.ToString());
                    cell.CellStyle = styles.headerStyle;
                }
            }

            // 填充数据行
            foreach (DataRow dataRow in dataTable.Rows)
            {
                string rowName = dataRow["序号"]?.ToString() ?? "";
                if (string.IsNullOrEmpty(rowName)) continue;

                IRow row = sheet.CreateRow(currentRow++);
                row.Height = 380;
                
                ICell nameCell = row.CreateCell(0);
                nameCell.SetCellValue(rowName);
                nameCell.CellStyle = styles.dataStyle;

                colIndex = 1;
                for (int i = 1; i <= sampleCount; i++)
                {
                    for (int j = 1; j <= 3; j++)
                    {
                        ICell cell = row.CreateCell(colIndex++);
                        string columnName = $"试样{i}_{j}";
                        if (dataTable.Columns.Contains(columnName) && dataRow[columnName] != DBNull.Value)
                        {
                            if (double.TryParse(dataRow[columnName].ToString(), out double value))
                            {
                                if (Math.Abs(value) >= 0.001)
                                {
                                    cell.SetCellValue(value);
                                }
                            }
                        }
                        cell.CellStyle = styles.yellowStyle;
                    }
                }
            }

            // 设置列宽
            sheet.SetColumnWidth(0, 20 * 256);
            for (int i = 1; i <= sampleCount * 3; i++)
            {
                sheet.SetColumnWidth(i, 12 * 256);
            }
        }

        private void CreateEmptySheet(ISheet sheet, string title, int sampleCount, 
            (ICellStyle titleStyle, ICellStyle headerStyle, ICellStyle dataStyle, ICellStyle yellowStyle) styles)
        {
            // 创建标题行
            IRow titleRow = sheet.CreateRow(0);
            ICell titleCell = titleRow.CreateCell(0);
            titleCell.SetCellValue(title);
            titleCell.CellStyle = styles.titleStyle;
            sheet.AddMergedRegion(new CellRangeAddress(0, 0, 0, sampleCount));
            titleRow.Height = 600;

            // 创建表头
            IRow headerRow = sheet.CreateRow(2);
            headerRow.Height = 400;
            ICell seqCell = headerRow.CreateCell(0);
            seqCell.SetCellValue("序号");
            seqCell.CellStyle = styles.headerStyle;

            for (int i = 1; i <= sampleCount; i++)
            {
                ICell cell = headerRow.CreateCell(i);
                cell.SetCellValue($"试样{i}");
                cell.CellStyle = styles.headerStyle;
            }

            // 设置列宽
            sheet.SetColumnWidth(0, 20 * 256);
            for (int i = 1; i <= sampleCount; i++)
            {
                sheet.SetColumnWidth(i, 15 * 256);
            }
        }

        private (ICellStyle titleStyle, ICellStyle headerStyle, ICellStyle dataStyle, ICellStyle yellowStyle)
            CreateReportStyles(IWorkbook workbook)
        {
            // 标题样式
            ICellStyle titleStyle = workbook.CreateCellStyle();
            IFont titleFont = workbook.CreateFont();
            titleFont.FontHeightInPoints = 16;
            titleFont.IsBold = true;
            titleStyle.SetFont(titleFont);
            titleStyle.Alignment = NPOIHorizontalAlignment.Center;
            titleStyle.VerticalAlignment = VerticalAlignment.Center;

            // 表头样式（灰色背景）
            ICellStyle headerStyle = workbook.CreateCellStyle();
            headerStyle.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.Grey25Percent.Index;
            headerStyle.FillPattern = FillPattern.SolidForeground;
            SetBorders(headerStyle);
            IFont headerFont = workbook.CreateFont();
            headerFont.IsBold = true;
            headerStyle.SetFont(headerFont);
            headerStyle.Alignment = NPOIHorizontalAlignment.Center;
            headerStyle.VerticalAlignment = VerticalAlignment.Center;

            // 数据样式（白色背景）
            ICellStyle dataStyle = workbook.CreateCellStyle();
            SetBorders(dataStyle);
            dataStyle.Alignment = NPOIHorizontalAlignment.Center;
            dataStyle.VerticalAlignment = VerticalAlignment.Center;

            // 黄色背景样式
            ICellStyle yellowStyle = workbook.CreateCellStyle();
            yellowStyle.FillForegroundColor = NPOI.HSSF.Util.HSSFColor.LightYellow.Index;
            yellowStyle.FillPattern = FillPattern.SolidForeground;
            SetBorders(yellowStyle);
            yellowStyle.Alignment = NPOIHorizontalAlignment.Center;
            yellowStyle.VerticalAlignment = VerticalAlignment.Center;

            return (titleStyle, headerStyle, dataStyle, yellowStyle);
        }

        private void SetBorders(ICellStyle style)
        {
            style.BorderBottom = NPOIBorderStyle.Thin;
            style.BorderTop = NPOIBorderStyle.Thin;
            style.BorderLeft = NPOIBorderStyle.Thin;
            style.BorderRight = NPOIBorderStyle.Thin;
        }
    }
}