Добавьте файлы проекта.

2026-01-05 00:29:19 +03:00
parent 76a09d80d4
commit d0653c2098
105 changed files with 6729 additions and 0 deletions
--- a/SQLVision.Services/Exporters/ExcelExporter.cs
+++ b/SQLVision.Services/Exporters/ExcelExporter.cs
@@ -0,0 +1,139 @@
+using ClosedXML.Excel;
+using Microsoft.Extensions.Logging;
+using SQLVision.Core.Models;
+using System.Data;
+
+namespace SQLVision.Services.Exporters;
+
+public class ExcelExporter : IExportHandler
+{
+    private readonly ILogger<ExcelExporter> _logger;
+
+    public string FormatName => "Excel";
+
+    public ExcelExporter(ILogger<ExcelExporter> logger)
+    {
+        _logger = logger;
+    }
+
+    public async Task ExportAsync(DataTable data, string filePath, ExportOptions options)
+    {
+        using var workbook = new XLWorkbook();
+        var worksheet = workbook.Worksheets.Add("Data");
+
+        WriteDataToWorksheet(worksheet, data, options);
+
+        if (options.IncludeCharts && data.Rows.Count > 0)
+        {
+            AddCharts(worksheet, data, options);
+        }
+
+        await Task.Run(() => workbook.SaveAs(filePath));
+        _logger.LogInformation("Exported {Rows} rows to Excel: {FilePath}", data.Rows.Count, filePath);
+    }
+
+    public async Task<byte[]> ExportToMemoryAsync(DataTable data, ExportOptions options)
+    {
+        using var workbook = new XLWorkbook();
+        var worksheet = workbook.Worksheets.Add("Data");
+
+        WriteDataToWorksheet(worksheet, data, options);
+
+        using var stream = new MemoryStream();
+        await Task.Run(() => workbook.SaveAs(stream));
+        return stream.ToArray();
+    }
+
+    private void WriteDataToWorksheet(IXLWorksheet worksheet, DataTable data, ExportOptions options)
+    {
+        if (options.IncludeHeaders)
+        {
+            for (int col = 0; col < data.Columns.Count; col++)
+            {
+                worksheet.Cell(1, col + 1).Value = data.Columns[col].ColumnName;
+                worksheet.Cell(1, col + 1).Style.Font.Bold = true;
+            }
+        }
+
+        int startRow = options.IncludeHeaders ? 2 : 1;
+
+        for (int row = 0; row < data.Rows.Count; row++)
+        {
+            for (int col = 0; col < data.Columns.Count; col++)
+            {
+                var value = data.Rows[row][col];
+                worksheet.Cell(startRow + row, col + 1).Value = ConvertValue(value);
+
+                ApplyFormatting(worksheet.Cell(startRow + row, col + 1), value);
+            }
+        }
+
+        if (options.AutoFilter)
+        {
+            var endRow = startRow + data.Rows.Count - 1;
+            worksheet.Range(1, 1, endRow, data.Columns.Count).SetAutoFilter();
+        }
+
+        worksheet.Columns().AdjustToContents();
+    }
+
+    private XLCellValue ConvertValue(object value)
+    {
+        if (value == null || value == DBNull.Value) return Blank.Value;
+
+        if (value is DateTime dateTime)
+            return dateTime;
+
+        if (value is decimal || value is double || value is float)
+            return Convert.ToDouble(value);
+
+        if (value is bool b)
+            return b;
+
+        return value.ToString();
+    }
+
+    private void ApplyFormatting(IXLCell cell, object value)
+    {
+        if (value is DateTime)
+        {
+            cell.Style.DateFormat.Format = "dd.MM.yyyy HH:mm:ss";
+        }
+        else if (value is decimal || value is double || value is float)
+        {
+            cell.Style.NumberFormat.Format = "#,##0.00";
+        }
+    }
+
+    private void AddCharts(IXLWorksheet worksheet, DataTable data, ExportOptions options)
+    {
+        if (data.Columns.Count < 2) return;
+
+        //TODO: chart
+        /*var chartType = GetChartType(options.ChartType);
+        var chart = worksheet.CreateChart(0, data.Columns.Count + 2, 20, data.Columns.Count + 10);
+        chart.ChartType = chartType;
+
+        // Добавление серий на основе данных
+        for (int col = 1; col < Math.Min(5, data.Columns.Count); col++)
+        {
+            var series = chart.AddSeries(
+                worksheet.Range(2, col + 1, data.Rows.Count + 1, col + 1),
+                worksheet.Range(2, 1, data.Rows.Count + 1, 1));
+
+            series.ChartType = chartType;
+        }
+        */
+    }
+
+    private XLChartType GetChartType(string? chartType) => chartType?.ToLower() switch
+    {
+        "line" => XLChartType.Line,
+        "column" => XLChartType.ColumnClustered,
+        "bar" => XLChartType.BarClustered,
+        "pie" => XLChartType.Pie,
+        "area" => XLChartType.Area,
+        _ => XLChartType.Line
+    };
+}
+