Merge branch 'unstable' into 'main'

Add excel export functionality

See merge request internship-2025/survey-webapp/surveylib!22

SurveyLib.Core/Tools/IDataExporter.cs

@@ -0,0 +1,6 @@
+namespace SurveyLib.Core.Tools;
+
+public interface IDataExporter
+{
+    Task<byte[]> ExportDataBySurveyIdAsync(int surveyId);
+}

SurveyLib.Tools/SurveyLib.Tools.csproj

@@ -0,0 +1,17 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\SurveyLib.Core\SurveyLib.Core.csproj" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <PackageReference Include="ClosedXML" Version="0.105.0" />
+    </ItemGroup>
+
+</Project>

SurveyLib.Tools/Tools/TableExporter.cs

@@ -0,0 +1,73 @@
+using ClosedXML.Excel;
+using SurveyLib.Core.Services;
+using SurveyLib.Core.Tools;
+
+namespace SurveyLib.Tools.Tools;
+
+public class TableExporter : IDataExporter
+{
+    private readonly ISurveyService _surveyService;
+    private readonly IQuestionService _questionService;
+    private readonly ICompletionService _completionService;
+    private readonly IAnswerService _answerService;
+
+    public TableExporter(ISurveyService surveyService, IQuestionService questionService,
+        ICompletionService completionService, IAnswerService answerService)
+    {
+        _surveyService = surveyService;
+        _questionService = questionService;
+        _completionService = completionService;
+        _answerService = answerService;
+    }
+
+    public async Task<byte[]> ExportDataBySurveyIdAsync(int surveyId)
+    {
+        var survey = await _surveyService.GetSurveyAsync(surveyId);
+        var questions = await _questionService.GetQuestionsBySurveyIdAsync(surveyId);
+        var completions = await _completionService.GetCompletionsBySurveyIdAsync(surveyId);
+
+        using var workbook = new XLWorkbook();
+        var ws = workbook.Worksheets.Add(survey.Title);
+        ws.Cell(1, 1).Value = "Title";
+        ws.Cell(1, 2).Value = survey.Title;
+
+        ws.Cell(2, 1).Value = "Description";
+        ws.Cell(2, 2).Value = survey.Description;
+
+        ws.Cell(3, 1).Value = "Export issued at";
+        ws.Cell(3, 2).Value = DateTime.UtcNow;
+
+        ws.Cell(4, 1).Value = "Completed By";
+        ws.Cell(4, 2).Value = "Finished At";
+
+        var column = 3;
+        foreach (var question in questions)
+        {
+            ws.Cell(4, column).Value = question.Title;
+            column++;
+        }
+
+        var row = 5;
+        foreach (var completion in completions)
+        {
+            ws.Cell(row, 1).Value = completion.CompletedBy?.ToString() ?? "Unknown";
+            ws.Cell(row, 2).Value = completion.FinishedAt;
+            column = 3;
+            var answers = await _answerService.GetAnswersByCompletionIdAsync(completion.Id);
+            var answersGroupedByQuestion = answers.GroupBy(a => a.QuestionId);
+            foreach (var questionAnswers in answersGroupedByQuestion)
+            {
+                ws.Cell(row, column).Value = string.Join("; ", questionAnswers.Select(a => a.AnswerText));
+                column++;
+            }
+
+            row++;
+        }
+
+        ws.Columns().AdjustToContents();
+
+        using var stream = new MemoryStream();
+        workbook.SaveAs(stream);
+        return stream.ToArray();
+    }
+}

SurveyLib.sln

@@ -6,6 +6,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SurveyLib.Infrastructure.EF
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SurveyLib.Services", "SurveyLib.Services\SurveyLib.Services.csproj", "{C57F4551-A397-45AB-8FF6-2C6400317CC6}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SurveyLib.Tools", "SurveyLib.Tools\SurveyLib.Tools.csproj", "{43E14A39-697E-4550-804F-FF937946F7E3}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -24,5 +26,9 @@ Global
 		{C57F4551-A397-45AB-8FF6-2C6400317CC6}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{C57F4551-A397-45AB-8FF6-2C6400317CC6}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{C57F4551-A397-45AB-8FF6-2C6400317CC6}.Release|Any CPU.Build.0 = Release|Any CPU
+		{43E14A39-697E-4550-804F-FF937946F7E3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{43E14A39-697E-4550-804F-FF937946F7E3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{43E14A39-697E-4550-804F-FF937946F7E3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{43E14A39-697E-4550-804F-FF937946F7E3}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal