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

import.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Text.Json;
 using System.Linq;
 
 namespace spplus;
@@ -50,42 +51,78 @@ public static class import
     
     public static List<Student> ImportResultFromFile(string path)
     {
-        var dict = new Dictionary<string, (string Name, List<string> Courses)>();
+        var dict = new Dictionary<string, string[]>(StringComparer.OrdinalIgnoreCase);
 
         foreach (var line in File.ReadLines(path).Skip(1)) // Header überspringen
         {
             if (string.IsNullOrWhiteSpace(line))
                 continue;
 
-            var parts = line.Split(',');
-            if (parts.Length < 3)
+            var parts = line.Split(',', StringSplitOptions.None);
+            if (parts.Length < 5)
                 continue;
 
-            string nameWithId = parts[0].Trim();
-            string course = parts[2].Replace("(2)", "").Replace("(3)", "").Replace("(4)", "").Trim();
-
-            int open = nameWithId.LastIndexOf('(');
-            int close = nameWithId.LastIndexOf(')');
-            if (open < 0 || close < 0 || close <= open)
-                continue;
-
-            string name = nameWithId[..open].Trim();
-            string id = nameWithId[(open + 1)..close].Trim();
-
-            if (!dict.ContainsKey(id))
-                dict[id] = (name, new List<string>());
-
-            dict[id].Courses.Add(course);
+            var studentId = parts[0].Trim();
+            dict[studentId] = new[]
+            {
+                parts[1].Trim(),
+                parts[2].Trim(),
+                parts[3].Trim(),
+                parts[4].Trim()
+            };
         }
 
-        var result = new List<Student>();
-
-        foreach (var (id, data) in dict)
-        {
-            var student = new Student(id, data.Name, data.Courses);
-            result.Add(student);
-        }
-
-        return result;
+        return dict
+            .Select(entry => new Student(entry.Key, string.Empty, new List<string>())
+            {
+                Result = entry.Value
+            })
+            .ToList();
     }
-}
+
+    private sealed class ResultImportEntry
+    {
+        public int Semester { get; set; }
+        public string SportName { get; set; } = string.Empty;
+        public List<string> Students { get; set; } = new();
+    }
+
+    public static List<(int Semester, CourseCrafter.CourseInstance Instance)> ImportResultFromJson(string path)
+    {
+        try
+        {
+            var json = File.ReadAllText(path);
+            var entries = JsonSerializer.Deserialize<List<ResultImportEntry>>(json);
+            if (entries == null) return new();
+
+            var result = new List<(int Semester, CourseCrafter.CourseInstance Instance)>();
+
+            foreach (var e in entries)
+            {
+                if (string.IsNullOrWhiteSpace(e.SportName))
+                    continue;
+
+                var sport = Settings.Instance.Sports.FirstOrDefault(s =>
+                    string.Equals(s.Name, e.SportName, StringComparison.OrdinalIgnoreCase) ||
+                    s.AlternativeNames.Any(a => string.Equals(a, e.SportName, StringComparison.OrdinalIgnoreCase)));
+
+                if (sport == null)
+                    continue;
+
+                var ci = new CourseCrafter.CourseInstance
+                {
+                    Sport = sport,
+                    Students = e.Students.Distinct().ToList()
+                };
+
+                result.Add((e.Semester, ci));
+            }
+
+            return result;
+        }
+        catch
+        {
+            return new();
+        }
+    }
+}