init 1.0.0

2026-06-19 00:42:00 +02:00
commit 5ca960746b
67 changed files with 3261 additions and 0 deletions
@@ -0,0 +1,60 @@
+using LiteDB;
+using LehrerApp.Core.Models;
+
+namespace LehrerApp.Data;
+
+/// <summary>
+/// Zentrale LiteDB-Verbindung. Singleton – eine Datei = ein Nutzer.
+/// </summary>
+public class LiteDbContext : IDisposable
+{
+    private readonly LiteDatabase _db;
+
+    public LiteDbContext(string databasePath)
+    {
+        _db = new LiteDatabase(new ConnectionString(databasePath)
+        {
+            Connection = ConnectionType.Shared,
+        });
+        EnsureIndexes();
+    }
+
+    public ILiteCollection<Student>       Students      => _db.GetCollection<Student>("students");
+    public ILiteCollection<LearningGroup> Groups        => _db.GetCollection<LearningGroup>("groups");
+    public ILiteCollection<Enrollment>    Enrollments   => _db.GetCollection<Enrollment>("enrollments");
+    public ILiteCollection<Exam>          Exams         => _db.GetCollection<Exam>("exams");
+    public ILiteCollection<ExamResult>    ExamResults   => _db.GetCollection<ExamResult>("exam_results");
+    public ILiteCollection<Grade>         Grades        => _db.GetCollection<Grade>("grades");
+    public ILiteCollection<Unit>          Units         => _db.GetCollection<Unit>("units");
+    public ILiteCollection<Lesson>        Lessons       => _db.GetCollection<Lesson>("lessons");
+    public ILiteCollection<Documentation> Documentation => _db.GetCollection<Documentation>("documentation");
+    public ILiteCollection<WorkTask>      Tasks         => _db.GetCollection<WorkTask>("tasks");
+    public ILiteCollection<TimeEntry>     TimeEntries   => _db.GetCollection<TimeEntry>("time_entries");
+
+    public void Checkpoint() => _db.Checkpoint();
+
+    private void EnsureIndexes()
+    {
+        Students.EnsureIndex(x => x.LastName);
+        Students.EnsureIndex(x => x.IsActive);
+        Groups.EnsureIndex(x => x.SchoolYear);
+        Enrollments.EnsureIndex(x => x.StudentId);
+        Enrollments.EnsureIndex(x => x.GroupId);
+        Enrollments.EnsureIndex(x => x.SchoolYear);
+        Exams.EnsureIndex(x => x.GroupId);
+        Exams.EnsureIndex(x => x.Status);
+        ExamResults.EnsureIndex(x => x.ExamId);
+        ExamResults.EnsureIndex(x => x.StudentId);
+        Grades.EnsureIndex(x => x.StudentId);
+        Grades.EnsureIndex(x => x.GroupId);
+        Units.EnsureIndex(x => x.GroupId);
+        Lessons.EnsureIndex(x => x.UnitId);
+        Lessons.EnsureIndex(x => x.GroupId);
+        Lessons.EnsureIndex(x => x.Date);
+        Documentation.EnsureIndex(x => x.StudentId);
+        Tasks.EnsureIndex(x => x.Status);
+        TimeEntries.EnsureIndex(x => x.Date);
+    }
+
+    public void Dispose() => _db.Dispose();
+}