using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Interactivity;
using Avalonia.Markup.Xaml;
using kursovaya.Models;
using Microsoft.EntityFrameworkCore;

namespace kursovaya;

public partial class TeacherWindow : Window
{
    List<DiscGroup> discGroups = new();    
    public ObservableCollection<AttestationPresenterTeacher> AttestationsTeachers = new ObservableCollection<AttestationPresenterTeacher>();
    List<AttestationPresenterTeacher> dataSourceAttestationsTeachers;
    CalculateGrade calculateGrade = new CalculateGrade();
    public TeacherWindow()
    {
        InitializeComponent();
    }

    public TeacherWindow(User user) : this()
    {
        var ctx = new DatabaseContext();
        
        var groups = ctx.Groups.ToList();
        var teacherId = ctx.Teachers.FirstOrDefault(t => t.Login == user.Login).Id;
        var disciplinesIds = ctx.Disciplines.Include(d => d.DisciplineTeachers).Where(d => d.DisciplineTeachers.Any(dt => dt.IdTeacher == teacherId)).Select(d => d.Id).ToList();
        var disciplines = ctx.Disciplines.Include(d => d.DisciplineTeachers).Where(d => d.DisciplineTeachers.Any(dt => dt.IdTeacher == teacherId)).ToList();
        dataSourceAttestationsTeachers = ctx.Attestations.Where(a => disciplinesIds.Contains(a.IdDiscipline)).Select(a => new AttestationPresenterTeacher()
        {
            IdUser = a.IdUser,
            IdDiscipline = a.IdDiscipline,
            AttestFirst = a.AttestFirst,
            AttestSecond = a.AttestSecond,
            AttestThird = a.AttestThird,
            Total = a.Total,
            Grade = a.Grade,
            StudentFIO = ctx.Students.Where(s => s.Id == a.IdUser).Select(s => s.Fio).FirstOrDefault(),
        }).ToList();
        foreach (var group in groups)
        {
            foreach (var discipline in disciplines)
            {
                var attestationsToDiscGroup = dataSourceAttestationsTeachers.Where(a => ctx.Students.Any(s => s.Id == a.IdUser && s.IdGroup == group.Id) && a.IdDiscipline == discipline.Id).ToList();
                discGroups.Add(new DiscGroup(){discipline = discipline, group = group, attestations = attestationsToDiscGroup});
            }
        }
        discGroups.RemoveAll(d => d.attestations.Count == 0);
        
        foreach (var discGroup in discGroups)
        {
            Console.WriteLine($"{discGroup.discipline.Name} - {discGroup.group.Id} - {discGroup.attestations.Count}");
        }
        
        MultComboBox.ItemsSource = discGroups.Select(dg => dg.NameComboBox).ToList();
        FlatAttestationGrid.ItemsSource = AttestationsTeachers;
    }
    
    public class AttestationPresenterTeacher() : Attestation
    {
        public string StudentFIO { get; set; }
    }
    
    public class DiscGroup
    {
        public Discipline discipline;
        public Group group;

        public string NameComboBox
        {
            get
            {
                return $"{discipline.Name} - {group.Id}";
            }
        }
        public List<AttestationPresenterTeacher> attestations = new();
    }
    
    public void DisplayAttestations()
    {
        var ctx = new DatabaseContext();
        var temp = dataSourceAttestationsTeachers;
        AttestationsTeachers.Clear();
    
        if (MultComboBox.SelectionBoxItem != null)
        {
            var selectedDiscGroupId = discGroups.FirstOrDefault(d => d.NameComboBox == MultComboBox.SelectedItem.ToString()).group.Id;
            temp = temp.Where(ap => ctx.Students.Any(s => s.Id == ap.IdUser && s.IdGroup == selectedDiscGroupId)).ToList();
            
            var selectedDiscGroupId2 = discGroups.FirstOrDefault(d => d.NameComboBox == MultComboBox.SelectedItem.ToString()).discipline.Id;
            temp = temp.Where(ap => ap.IdDiscipline == selectedDiscGroupId2).ToList();
        }
        
        Console.WriteLine("Добавлено элементов: " + temp.Count);
        
        foreach (var item in temp)
        {
            AttestationsTeachers.Add(item);
        }
    }

    private void ButtonBack_OnClick(object? sender, RoutedEventArgs e)
    {
        Close();
    }
    
    private void CheckAttest_OnClick(object? sender, RoutedEventArgs e)
    {
        DisplayAttestations();
    }

    // public string CalculateGrade(int total, int formAttest)
    // {
    //     string grade = "";
    //     switch (formAttest)
    //     {
    //         case 1:
    //             if (total >= 90) grade = "отлично";
    //             else if (total >= 80) grade = "хорошо";
    //             else if (total >= 70) grade = "удовлетворительно";
    //             else grade = "неудовлетворительно";
    //             break;
    //         case 2:
    //             if (total >= 90) grade = "отлично";
    //             else if (total >= 80) grade = "хорошо";
    //             else if (total >= 70) grade = "удовлетворительно";
    //             else grade = "неудовлетворительно";
    //             break;
    //         case 3:
    //             if (total >= 70) grade = "зачтено";
    //             else grade = "не зачтено";
    //             break;
    //     }
    //     return grade;
    // }
    
    private async void FirstAttest_OnClick(object? sender, RoutedEventArgs e)
    {
        if (sender is Button button && button.Tag is AttestationPresenterTeacher attestation)
        {
            EditAttestWindow editAttestWindow = new EditAttestWindow(1);
            var newFirstAttest = await editAttestWindow.ShowDialog<int>(this);
            var ctx = new DatabaseContext();
            var formAttest = ctx.Disciplines.FirstOrDefault(d => d.Id == attestation.IdDiscipline).IdFormAttest;
            
            Attestation newAttestation = new Attestation()
            {
                IdUser = attestation.IdUser,
                IdDiscipline = attestation.IdDiscipline,
                AttestFirst = newFirstAttest,
                AttestSecond = attestation.AttestSecond,
                AttestThird = attestation.AttestThird,
                Total = newFirstAttest + attestation.AttestSecond + attestation.AttestThird,
                // Grade = CalculateGrade(newFirstAttest + attestation.AttestSecond + attestation.AttestThird, formAttest),
                Grade = calculateGrade.CalculateGradeMethod(newFirstAttest + attestation.AttestSecond + attestation.AttestThird, formAttest),
            };
            
            ctx.Attestations.Update(newAttestation);
            await ctx.SaveChangesAsync();
            
            dataSourceAttestationsTeachers.Remove(attestation);
            dataSourceAttestationsTeachers.Add(new AttestationPresenterTeacher()
            {
                IdUser = newAttestation.IdUser,
                IdDiscipline = newAttestation.IdDiscipline,
                AttestFirst = newAttestation.AttestFirst,
                AttestSecond = newAttestation.AttestSecond,
                AttestThird = newAttestation.AttestThird,
                Total = newAttestation.Total,
                Grade = newAttestation.Grade,
                StudentFIO = ctx.Students.Where(s => s.Id == newAttestation.IdUser).Select(s => s.Fio).FirstOrDefault()
            });
            DisplayAttestations();
        }
    }
    
    private async void SecondAttest_OnClick(object? sender, RoutedEventArgs e)
    {
        if (sender is Button button && button.Tag is AttestationPresenterTeacher attestation)
        {
            EditAttestWindow editAttestWindow = new EditAttestWindow(2);
            var newSecondAttest = await editAttestWindow.ShowDialog<int>(this);
            var ctx = new DatabaseContext();
            var formAttest = ctx.Disciplines.FirstOrDefault(d => d.Id == attestation.IdDiscipline).IdFormAttest;
            
            Attestation newAttestation = new Attestation()
            {
                IdUser = attestation.IdUser,
                IdDiscipline = attestation.IdDiscipline,
                AttestFirst = attestation.AttestFirst,
                AttestSecond = newSecondAttest,
                AttestThird = attestation.AttestThird,
                Total = attestation.AttestFirst + newSecondAttest + attestation.AttestThird,
                // Grade = CalculateGrade(attestation.AttestFirst + newSecondAttest + attestation.AttestThird, formAttest),
                Grade = calculateGrade.CalculateGradeMethod(attestation.AttestFirst + newSecondAttest + attestation.AttestThird, formAttest),

            };
            
            ctx.Attestations.Update(newAttestation);
            await ctx.SaveChangesAsync();
            
            dataSourceAttestationsTeachers.Remove(attestation);
            dataSourceAttestationsTeachers.Add(new AttestationPresenterTeacher()
            {
                IdUser = newAttestation.IdUser,
                IdDiscipline = newAttestation.IdDiscipline,
                AttestFirst = newAttestation.AttestFirst,
                AttestSecond = newAttestation.AttestSecond,
                AttestThird = newAttestation.AttestThird,
                Total = newAttestation.Total,
                Grade = newAttestation.Grade,
                StudentFIO = ctx.Students.Where(s => s.Id == newAttestation.IdUser).Select(s => s.Fio).FirstOrDefault()
            });
            DisplayAttestations();
        }
    }
    
    private async void ThirdAttest_OnClick(object? sender, RoutedEventArgs e)
    {
        if (sender is Button button && button.Tag is AttestationPresenterTeacher attestation)
        {
            EditAttestWindow editAttestWindow = new EditAttestWindow(3);
            var newThirdAttest = await editAttestWindow.ShowDialog<int>(this);
            var ctx = new DatabaseContext();
            var formAttest = ctx.Disciplines.FirstOrDefault(d => d.Id == attestation.IdDiscipline).IdFormAttest;
            
            Attestation newAttestation = new Attestation()
            {
                IdUser = attestation.IdUser,
                IdDiscipline = attestation.IdDiscipline,
                AttestFirst = attestation.AttestFirst,
                AttestSecond = attestation.AttestSecond,
                AttestThird = newThirdAttest,
                Total = attestation.AttestFirst + attestation.AttestSecond + newThirdAttest,
                // Grade = CalculateGrade(attestation.AttestFirst + attestation.AttestSecond + newThirdAttest, formAttest),
                Grade = calculateGrade.CalculateGradeMethod(attestation.AttestFirst + attestation.AttestSecond + newThirdAttest, formAttest),
            };
            
            ctx.Attestations.Update(newAttestation);
            await ctx.SaveChangesAsync();
            
            dataSourceAttestationsTeachers.Remove(attestation);
            dataSourceAttestationsTeachers.Add(new AttestationPresenterTeacher()
            {
                IdUser = newAttestation.IdUser,
                IdDiscipline = newAttestation.IdDiscipline,
                AttestFirst = newAttestation.AttestFirst,
                AttestSecond = newAttestation.AttestSecond,
                AttestThird = newAttestation.AttestThird,
                Total = newAttestation.Total,
                Grade = newAttestation.Grade,
                StudentFIO = ctx.Students.Where(s => s.Id == newAttestation.IdUser).Select(s => s.Fio).FirstOrDefault()
            });
            DisplayAttestations();
        }
    }
}


// using System;
// using System.Collections.Generic;
// using System.Collections.ObjectModel;
// using System.Linq;
// using Avalonia;
// using Avalonia.Controls;
// using Avalonia.Interactivity;
// using Avalonia.Markup.Xaml;
// using kursovaya.Models;
// using Microsoft.EntityFrameworkCore;
//
// namespace kursovaya;
//
// public partial class TeacherWindow : Window
// {
//     List<DiscGroup> discGroups = new();    
//     public ObservableCollection<AttestationPresenterTeacher> AttestationsTeachers = new ObservableCollection<AttestationPresenterTeacher>();
//     List<AttestationPresenterTeacher> dataSourceAttestationsTeachers;
//     public TeacherWindow()
//     {
//         InitializeComponent();
//     }
//
//     public TeacherWindow(User user) : this()
//     {
//         var ctx = new DatabaseContext();
//         
//         var groups = ctx.Groups.ToList();
//         var teacherId = ctx.Teachers.FirstOrDefault(t => t.Login == user.Login).Id;
//         var disciplinesIds = ctx.Disciplines.Include(d => d.DisciplineTeachers).Where(d => d.DisciplineTeachers.Any(dt => dt.IdTeacher == teacherId)).Select(d => d.Id).ToList();
//         var disciplines = ctx.Disciplines.Include(d => d.DisciplineTeachers).Where(d => d.DisciplineTeachers.Any(dt => dt.IdTeacher == teacherId)).ToList();
//         dataSourceAttestationsTeachers = ctx.Attestations.Where(a => disciplinesIds.Contains(a.IdDiscipline)).Select(a => new AttestationPresenterTeacher()
//         {
//             IdUser = a.IdUser,
//             IdDiscipline = a.IdDiscipline,
//             AttestFirst = a.AttestFirst,
//             AttestSecond = a.AttestSecond,
//             AttestThird = a.AttestThird,
//             Total = a.Total,
//             Grade = a.Grade,
//             StudentFIO = ctx.Students.Where(s => s.Id == a.IdUser).Select(s => s.Fio).FirstOrDefault(),
//         }).ToList();
//         foreach (var group in groups)
//         {
//             foreach (var discipline in disciplines)
//             {
//                 var attestationsToDiscGroup = dataSourceAttestationsTeachers.Where(a => ctx.Students.Any(s => s.Id == a.IdUser && s.IdGroup == group.Id) && a.IdDiscipline == discipline.Id).ToList();
//                 discGroups.Add(new DiscGroup(){discipline = discipline, group = group, attestations = attestationsToDiscGroup});
//             }
//         }
//         discGroups.RemoveAll(d => d.attestations.Count == 0);
//         
//         foreach (var discGroup in discGroups)
//         {
//             Console.WriteLine($"{discGroup.discipline.Name} - {discGroup.group.Id} - {discGroup.attestations.Count}");
//         }
//         
//         GroupComboBox.ItemsSource = discGroups.Select(dg => dg.group.Id).Distinct().ToList();
//         DisciplineComboBox.ItemsSource = discGroups.Select(dg => dg.discipline.Name).Distinct().ToList();
//         FlatAttestationGrid.ItemsSource = AttestationsTeachers;
//     }
//     
//     public class AttestationPresenterTeacher() : Attestation
//     {
//         public string StudentFIO { get; set; }
//     }
//     
//     public class DiscGroup
//     {
//         public Discipline discipline;
//         public Group group;
//         public List<AttestationPresenterTeacher> attestations = new();
//     }
//     
//     public void DisplayAttestations()
//     {
//         var ctx = new DatabaseContext();
//         var temp = dataSourceAttestationsTeachers;
//         AttestationsTeachers.Clear();
//     
//         if (GroupComboBox.SelectionBoxItem != null)
//         {
//             var selectedGroupId = Convert.ToInt32(GroupComboBox.SelectedItem);
//             temp = temp.Where(ap => ctx.Students.Any(s => s.Id == ap.IdUser && s.IdGroup == selectedGroupId)).ToList();
//         }
//         
//         if (DisciplineComboBox.SelectionBoxItem != null)
//         {
//             var idDiscipline = ctx.Disciplines.Where(d => d.Name == DisciplineComboBox.SelectionBoxItem)
//                 .Select(d => d.Id).FirstOrDefault();
//             temp = temp.Where(ap => ap.IdDiscipline == idDiscipline).ToList();
//         }
//         
//         Console.WriteLine("Добавлено элементов: " + temp.Count);
//         
//         foreach (var item in temp)
//         {
//             AttestationsTeachers.Add(item);
//         }
//     }
//
//     private void ButtonBack_OnClick(object? sender, RoutedEventArgs e)
//     {
//         Close();
//     }
//     
//     private void CheckAttest_OnClick(object? sender, RoutedEventArgs e)
//     {
//         DisplayAttestations();
//     }
//
//     private string CalculateGrade(int total, int formAttest)
//     {
//         string grade = "";
//         switch (formAttest)
//         {
//             case 1:
//                 if (total >= 90) grade = "отлично";
//                 else if (total >= 80) grade = "хорошо";
//                 else if (total >= 70) grade = "удовлетворительно";
//                 else grade = "неудовлетворительно";
//                 break;
//             case 2:
//                 if (total >= 90) grade = "отлично";
//                 else if (total >= 80) grade = "хорошо";
//                 else if (total >= 70) grade = "удовлетворительно";
//                 else grade = "неудовлетворительно";
//                 break;
//             case 3:
//                 if (total >= 70) grade = "зачтено";
//                 else grade = "не зачтено";
//                 break;
//         }
//         return grade;
//     }
//     
//     private async void FirstAttest_OnClick(object? sender, RoutedEventArgs e)
//     {
//         if (sender is Button button && button.Tag is AttestationPresenterTeacher attestation)
//         {
//             EditAttestWindow editAttestWindow = new EditAttestWindow(1);
//             var newFirstAttest = await editAttestWindow.ShowDialog<int>(this);
//             var ctx = new DatabaseContext();
//             var formAttest = ctx.Disciplines.FirstOrDefault(d => d.Id == attestation.IdDiscipline).IdFormAttest;
//             
//             Attestation newAttestation = new Attestation()
//             {
//                 IdUser = attestation.IdUser,
//                 IdDiscipline = attestation.IdDiscipline,
//                 AttestFirst = newFirstAttest,
//                 AttestSecond = attestation.AttestSecond,
//                 AttestThird = attestation.AttestThird,
//                 Total = newFirstAttest + attestation.AttestSecond + attestation.AttestThird,
//                 Grade = CalculateGrade(newFirstAttest + attestation.AttestSecond + attestation.AttestThird, formAttest),
//             };
//             
//             ctx.Attestations.Update(newAttestation);
//             await ctx.SaveChangesAsync();
//             
//             dataSourceAttestationsTeachers.Remove(attestation);
//             dataSourceAttestationsTeachers.Add(new AttestationPresenterTeacher()
//             {
//                 IdUser = newAttestation.IdUser,
//                 IdDiscipline = newAttestation.IdDiscipline,
//                 AttestFirst = newAttestation.AttestFirst,
//                 AttestSecond = newAttestation.AttestSecond,
//                 AttestThird = newAttestation.AttestThird,
//                 Total = newAttestation.Total,
//                 Grade = newAttestation.Grade,
//                 StudentFIO = ctx.Students.Where(s => s.Id == newAttestation.IdUser).Select(s => s.Fio).FirstOrDefault()
//             });
//             DisplayAttestations();
//         }
//     }
//     
//     private async void SecondAttest_OnClick(object? sender, RoutedEventArgs e)
//     {
//         if (sender is Button button && button.Tag is AttestationPresenterTeacher attestation)
//         {
//             EditAttestWindow editAttestWindow = new EditAttestWindow(2);
//             var newSecondAttest = await editAttestWindow.ShowDialog<int>(this);
//             var ctx = new DatabaseContext();
//             var formAttest = ctx.Disciplines.FirstOrDefault(d => d.Id == attestation.IdDiscipline).IdFormAttest;
//             
//             Attestation newAttestation = new Attestation()
//             {
//                 IdUser = attestation.IdUser,
//                 IdDiscipline = attestation.IdDiscipline,
//                 AttestFirst = attestation.AttestFirst,
//                 AttestSecond = newSecondAttest,
//                 AttestThird = attestation.AttestThird,
//                 Total = attestation.AttestFirst + newSecondAttest + attestation.AttestThird,
//                 Grade = CalculateGrade(attestation.AttestFirst + newSecondAttest + attestation.AttestThird, formAttest),
//             };
//             
//             ctx.Attestations.Update(newAttestation);
//             await ctx.SaveChangesAsync();
//             
//             dataSourceAttestationsTeachers.Remove(attestation);
//             dataSourceAttestationsTeachers.Add(new AttestationPresenterTeacher()
//             {
//                 IdUser = newAttestation.IdUser,
//                 IdDiscipline = newAttestation.IdDiscipline,
//                 AttestFirst = newAttestation.AttestFirst,
//                 AttestSecond = newAttestation.AttestSecond,
//                 AttestThird = newAttestation.AttestThird,
//                 Total = newAttestation.Total,
//                 Grade = newAttestation.Grade,
//                 StudentFIO = ctx.Students.Where(s => s.Id == newAttestation.IdUser).Select(s => s.Fio).FirstOrDefault()
//             });
//             DisplayAttestations();
//         }
//     }
//     
//     private async void ThirdAttest_OnClick(object? sender, RoutedEventArgs e)
//     {
//         if (sender is Button button && button.Tag is AttestationPresenterTeacher attestation)
//         {
//             EditAttestWindow editAttestWindow = new EditAttestWindow(3);
//             var newThirdAttest = await editAttestWindow.ShowDialog<int>(this);
//             var ctx = new DatabaseContext();
//             var formAttest = ctx.Disciplines.FirstOrDefault(d => d.Id == attestation.IdDiscipline).IdFormAttest;
//             
//             Attestation newAttestation = new Attestation()
//             {
//                 IdUser = attestation.IdUser,
//                 IdDiscipline = attestation.IdDiscipline,
//                 AttestFirst = attestation.AttestFirst,
//                 AttestSecond = attestation.AttestSecond,
//                 AttestThird = newThirdAttest,
//                 Total = attestation.AttestFirst + attestation.AttestSecond + newThirdAttest,
//                 Grade = CalculateGrade(attestation.AttestFirst + attestation.AttestSecond + newThirdAttest, formAttest),
//             };
//             
//             ctx.Attestations.Update(newAttestation);
//             await ctx.SaveChangesAsync();
//             
//             dataSourceAttestationsTeachers.Remove(attestation);
//             dataSourceAttestationsTeachers.Add(new AttestationPresenterTeacher()
//             {
//                 IdUser = newAttestation.IdUser,
//                 IdDiscipline = newAttestation.IdDiscipline,
//                 AttestFirst = newAttestation.AttestFirst,
//                 AttestSecond = newAttestation.AttestSecond,
//                 AttestThird = newAttestation.AttestThird,
//                 Total = newAttestation.Total,
//                 Grade = newAttestation.Grade,
//                 StudentFIO = ctx.Students.Where(s => s.Id == newAttestation.IdUser).Select(s => s.Fio).FirstOrDefault()
//             });
//             DisplayAttestations();
//         }
//     }
// }