[feat:] im- and export (pdf/json)

exporter.cs

@@ -1,9 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
 using System.IO;
+using System.Text.Json;
 
 namespace spplus;
 
 public static class ExportUtility
 {
+    private sealed class ConfigurationExport
+    {
+        public List<Sport> Sports { get; set; } = [];
+        public int[] NumCoursesPerSemester { get; set; } = [];
+    }
+
     public static void ExportToCSV(string filepath)
     {
         char separator = ',';
@@ -16,4 +26,42 @@ public static class ExportUtility
         
         File.WriteAllText(filepath, output);
     }
-}
+
+    private sealed class ResultExportEntry
+    {
+        public int Semester { get; set; }
+        public string SportName { get; set; } = string.Empty;
+        public List<string> Students { get; set; } = new();
+    }
+
+    public static void ExportResultsToJson(string filepath)
+    {
+        var list = CourseCrafter.GeneratedCourses
+            .Select(g => new ResultExportEntry
+            {
+                Semester = g.Semester,
+                SportName = g.Instance.Sport.Name,
+                Students = g.Instance.Students.ToList()
+            })
+            .ToList();
+
+        var json = JsonSerializer.Serialize(list, new JsonSerializerOptions { WriteIndented = true });
+        File.WriteAllText(filepath, json);
+    }
+
+    public static void ExportConfigurationToJson(string filepath)
+    {
+        var export = new ConfigurationExport
+        {
+            Sports = Settings.Instance.Sports,
+            NumCoursesPerSemester = Settings.Instance.NumCoursesPerSemester
+        };
+
+        var json = JsonSerializer.Serialize(export, new JsonSerializerOptions
+        {
+            WriteIndented = true
+        });
+
+        File.WriteAllText(filepath, json);
+    }
+}