init 1.0.0

LehrerApp.Core/Interfaces/IRepositories.cs

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+using LehrerApp.Core.Models;
+
+namespace LehrerApp.Core.Interfaces;
+
+public interface IStudentRepository
+{
+    Student? GetById(Guid id);
+    List<Student> GetAll(bool includeInactive = false);
+    List<Student> GetByGroup(Guid groupId, string schoolYear);
+    void Save(Student student);
+    void Delete(Guid id);
+}
+public interface IGroupRepository
+{
+    LearningGroup? GetById(Guid id);
+    List<LearningGroup> GetAll();
+    List<LearningGroup> GetBySchoolYear(string schoolYear);
+    void Save(LearningGroup group);
+    void Delete(Guid id);
+}
+public interface IEnrollmentRepository
+{
+    List<Enrollment> GetByStudent(Guid studentId);
+    List<Enrollment> GetByGroup(Guid groupId);
+    List<Enrollment> GetByGroupAndYear(Guid groupId, string schoolYear);
+    void Save(Enrollment enrollment);
+    void Delete(Guid id);
+}
+public interface IExamRepository
+{
+    Exam? GetById(Guid id);
+    List<Exam> GetByGroup(Guid groupId);
+    void Save(Exam exam);
+    void Delete(Guid id);
+}
+public interface IExamResultRepository
+{
+    List<ExamResult> GetByExam(Guid examId);
+    List<ExamResult> GetByStudent(Guid studentId);
+    ExamResult? GetByExamAndStudent(Guid examId, Guid studentId);
+    void Save(ExamResult result);
+    void SaveMany(List<ExamResult> results);
+}
+public interface IGradeRepository
+{
+    List<Grade> GetByStudentAndGroup(Guid studentId, Guid groupId);
+    List<Grade> GetByGroup(Guid groupId);
+    void Save(Grade grade);
+    void Delete(Guid id);
+}
+public interface IUnitRepository
+{
+    Unit? GetById(Guid id);
+    List<Unit> GetByGroup(Guid groupId);
+    void Save(Unit unit);
+    void Delete(Guid id);
+}
+public interface ILessonRepository
+{
+    List<Lesson> GetByUnit(Guid unitId);
+    List<Lesson> GetByGroupAndDate(Guid groupId, DateOnly date);
+    List<Lesson> GetByGroupAndRange(Guid groupId, DateOnly from, DateOnly to);
+    void Save(Lesson lesson);
+    void Delete(Guid id);
+}
+public interface IDocumentationRepository
+{
+    List<Documentation> GetByStudent(Guid studentId);
+    List<Documentation> GetByStudentAndType(Guid studentId, DocumentationType type);
+    void Save(Documentation doc);
+    void Delete(Guid id);
+}
+public interface IWorkTaskRepository
+{
+    List<WorkTask> GetByStatus(WorkTaskStatus status);
+    List<WorkTask> GetAll();
+    void Save(WorkTask task);
+    void Delete(Guid id);
+}
+public interface ITimeEntryRepository
+{
+    List<TimeEntry> GetByDate(DateOnly date);
+    List<TimeEntry> GetByDateRange(DateOnly from, DateOnly to);
+    List<TimeEntry> GetByTask(Guid taskId);
+    void Save(TimeEntry entry);
+    void Delete(Guid id);
+}

LehrerApp.Core/LehrerApp.Core.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+  </PropertyGroup>
+</Project>

LehrerApp.Core/Models/Exam.cs

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+namespace LehrerApp.Core.Models;
+
+public class Exam
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public Guid GroupId { get; set; }
+    public string Title { get; set; } = "";
+    public DateOnly Date { get; set; }
+    public string Subject { get; set; } = "";
+    public int? ExamNumber { get; set; }
+    public List<ExamTask> Tasks { get; set; } = [];
+    public List<GradingKeyEntry> GradingKey { get; set; } = [];
+    public ExamStatus Status { get; set; } = ExamStatus.Planned;
+    public string? Notes { get; set; }
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+    public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+}
+public class ExamTask
+{
+    public int Nr { get; set; }
+    public string? Title { get; set; }
+    public double MaxPoints { get; set; }
+    public double Weight { get; set; } = 1.0;
+}
+public class GradingKeyEntry
+{
+    public string Grade { get; set; } = "";
+    public double MinPercent { get; set; }
+}
+public class ExamResult
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public Guid ExamId { get; set; }
+    public Guid StudentId { get; set; }
+    public List<double> Points { get; set; } = [];
+    public double TotalPoints { get; set; }
+    public string? Grade { get; set; }
+    public bool Absent { get; set; }
+    public string? Comment { get; set; }
+    public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+}
+public enum ExamStatus { Planned, Conducted, Graded, Returned }

LehrerApp.Core/Models/LearningGroup.cs

@@ -0,0 +1,26 @@
+namespace LehrerApp.Core.Models;
+
+public class LearningGroup
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public string Name { get; set; } = "";
+    public GroupType Type { get; set; }
+    public string? Subject { get; set; }
+    public string SchoolYear { get; set; } = "";
+    public int GradeLevel { get; set; }
+    public GradingSystem GradingSystem { get; set; }
+    public int? HoursPerWeek { get; set; }
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+    public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+}
+public class Enrollment
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public Guid StudentId { get; set; }
+    public Guid GroupId { get; set; }
+    public string SchoolYear { get; set; } = "";
+    public DateOnly EnrolledAt { get; set; } = DateOnly.FromDateTime(DateTime.Today);
+    public DateOnly? LeftAt { get; set; }
+}
+public enum GroupType { Class, Course }
+public enum GradingSystem { Grades1To6, Points0To15 }

LehrerApp.Core/Models/Planning.cs

@@ -0,0 +1,50 @@
+namespace LehrerApp.Core.Models;
+
+public class Grade
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public Guid StudentId { get; set; }
+    public Guid GroupId { get; set; }
+    public string SchoolYear { get; set; } = "";
+    public GradeCategory Category { get; set; }
+    public string Value { get; set; } = "";
+    public DateOnly Date { get; set; }
+    public double Weight { get; set; } = 1.0;
+    public string? Note { get; set; }
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+}
+public enum GradeCategory { Oral, Homework, Participation, Project, Other }
+
+public class Unit
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public Guid GroupId { get; set; }
+    public string Title { get; set; } = "";
+    public string Subject { get; set; } = "";
+    public string SchoolYear { get; set; } = "";
+    public DateOnly? StartDate { get; set; }
+    public DateOnly? EndDate { get; set; }
+    public List<string> Competencies { get; set; } = [];
+    public UnitStatus Status { get; set; } = UnitStatus.Planned;
+    public string? Notes { get; set; }
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+    public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+}
+public class Lesson
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public Guid UnitId { get; set; }
+    public Guid GroupId { get; set; }
+    public DateOnly Date { get; set; }
+    public int? LessonNumber { get; set; }
+    public string Topic { get; set; } = "";
+    public string? Phase { get; set; }
+    public List<string> Methods { get; set; } = [];
+    public List<string> Materials { get; set; } = [];
+    public string? Homework { get; set; }
+    public string? Reflection { get; set; }
+    public LessonStatus Status { get; set; } = LessonStatus.Planned;
+    public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+}
+public enum UnitStatus { Planned, Active, Completed }
+public enum LessonStatus { Planned, Conducted }

LehrerApp.Core/Models/Student.cs

@@ -0,0 +1,24 @@
+namespace LehrerApp.Core.Models;
+
+public class Student
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public string FirstName { get; set; } = "";
+    public string LastName { get; set; } = "";
+    public string FullName => $"{LastName}, {FirstName}";
+    public DateOnly? DateOfBirth { get; set; }
+    public Gender? Gender { get; set; }
+    public List<Contact> Contacts { get; set; } = [];
+    public string? Notes { get; set; }
+    public bool IsActive { get; set; } = true;
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+    public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+}
+public class Contact
+{
+    public string Name { get; set; } = "";
+    public string Relation { get; set; } = "";
+    public string? Phone { get; set; }
+    public string? Email { get; set; }
+}
+public enum Gender { M, W, D }

LehrerApp.Core/Models/Workload.cs

@@ -0,0 +1,61 @@
+namespace LehrerApp.Core.Models;
+
+public class Documentation
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public Guid StudentId { get; set; }
+    public Guid? GroupId { get; set; }
+    public DocumentationType Type { get; set; }
+    public DateOnly Date { get; set; }
+    public string Title { get; set; } = "";
+    public string Content { get; set; } = "";
+    public List<string> Participants { get; set; } = [];
+    public AbsenceData? AbsenceData { get; set; }
+    public SupportData? SupportData { get; set; }
+    public bool IsConfidential { get; set; }
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+    public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+}
+public class AbsenceData
+{
+    public int LessonCount { get; set; }
+    public bool Excused { get; set; }
+    public string? Reason { get; set; }
+}
+public class SupportData
+{
+    public List<string> Measures { get; set; } = [];
+    public DateOnly? ReviewDate { get; set; }
+    public SupportStatus Status { get; set; } = SupportStatus.Active;
+}
+public enum DocumentationType { Conversation, Incident, SupportPlan, Absence }
+public enum SupportStatus { Active, Completed, Paused }
+
+public class WorkTask
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public string Title { get; set; } = "";
+    public TaskCategory Category { get; set; }
+    public Guid? GroupId { get; set; }
+    public DateOnly? DueDate { get; set; }
+    public int? EstimatedMinutes { get; set; }
+    public WorkTaskStatus Status { get; set; } = WorkTaskStatus.Open;
+    public string? Notes { get; set; }
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+    public DateTime UpdatedAt { get; set; } = DateTime.UtcNow;
+}
+public class TimeEntry
+{
+    public Guid Id { get; set; } = Guid.NewGuid();
+    public Guid? TaskId { get; set; }
+    public string Category { get; set; } = "";
+    public Guid? GroupId { get; set; }
+    public DateOnly Date { get; set; }
+    public TimeOnly? StartTime { get; set; }
+    public TimeOnly? EndTime { get; set; }
+    public int DurationMinutes { get; set; }
+    public string? Description { get; set; }
+    public DateTime CreatedAt { get; set; } = DateTime.UtcNow;
+}
+public enum TaskCategory { Correction, Preparation, Admin, Meeting, Other }
+public enum WorkTaskStatus { Open, InProgress, Done }

LehrerApp.Core/Services/GradingService.cs

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+using LehrerApp.Core.Models;
+
+namespace LehrerApp.Core.Services;
+
+public class GradingService
+{
+    public string CalculateGrade(double achieved, double maximum, List<GradingKeyEntry> key)
+    {
+        if (maximum <= 0) return "-";
+        var percent = achieved / maximum * 100.0;
+        return key.OrderByDescending(k => k.MinPercent)
+                  .FirstOrDefault(k => percent >= k.MinPercent)
+                  ?.Grade ?? key.OrderBy(k => k.MinPercent).First().Grade;
+    }
+    public static List<GradingKeyEntry> DefaultKey1To6() =>
+    [
+        new() { Grade = "1", MinPercent = 87.5 },
+        new() { Grade = "2", MinPercent = 75.0 },
+        new() { Grade = "3", MinPercent = 62.5 },
+        new() { Grade = "4", MinPercent = 50.0 },
+        new() { Grade = "5", MinPercent = 25.0 },
+        new() { Grade = "6", MinPercent = 0.0  },
+    ];
+    public static List<GradingKeyEntry> DefaultKey0To15() =>
+    [
+        new() { Grade = "15", MinPercent = 95.0 },
+        new() { Grade = "14", MinPercent = 90.0 },
+        new() { Grade = "13", MinPercent = 85.0 },
+        new() { Grade = "12", MinPercent = 80.0 },
+        new() { Grade = "11", MinPercent = 75.0 },
+        new() { Grade = "10", MinPercent = 70.0 },
+        new() { Grade = "9",  MinPercent = 65.0 },
+        new() { Grade = "8",  MinPercent = 60.0 },
+        new() { Grade = "7",  MinPercent = 55.0 },
+        new() { Grade = "6",  MinPercent = 50.0 },
+        new() { Grade = "5",  MinPercent = 45.0 },
+        new() { Grade = "4",  MinPercent = 40.0 },
+        new() { Grade = "3",  MinPercent = 33.0 },
+        new() { Grade = "2",  MinPercent = 27.0 },
+        new() { Grade = "1",  MinPercent = 20.0 },
+        new() { Grade = "0",  MinPercent = 0.0  },
+    ];
+    public double WeightedAverage(List<(string Grade, double Weight)> grades)
+    {
+        var numeric = grades
+            .Select(g => (Value: int.TryParse(g.Grade, out var n) ? (int?)n : null, g.Weight))
+            .Where(g => g.Value.HasValue).ToList();
+        if (numeric.Count == 0) return 0;
+        var total = numeric.Sum(g => g.Weight);
+        return total == 0 ? 0 : numeric.Sum(g => g.Value!.Value * g.Weight) / total;
+    }
+}

LehrerApp.Core/Services/SchoolYearService.cs

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+namespace LehrerApp.Core.Services;
+
+public class SchoolYearService
+{
+    public string CurrentSchoolYear()
+    {
+        var now = DateTime.Today;
+        return FormatSchoolYear(now.Month >= 8 ? now.Year : now.Year - 1);
+    }
+    public string FormatSchoolYear(int startYear) =>
+        $"{startYear}/{(startYear + 1) % 100:D2}";
+    public DateOnly SchoolYearStart(string sy) =>
+        new(int.Parse(sy.Split('/')[0]), 8, 1);
+    public DateOnly SchoolYearEnd(string sy) =>
+        new(int.Parse(sy.Split('/')[0]) + 1, 7, 31);
+    public List<string> RecentSchoolYears(int count = 5)
+    {
+        var now = DateTime.Today;
+        var cur = now.Month >= 8 ? now.Year : now.Year - 1;
+        return Enumerable.Range(0, count).Select(i => FormatSchoolYear(cur - i)).ToList();
+    }
+}