using Controller.Repository;
using Controller.ViewModels;
using DataModels.Enums;
using DataModels.Models;

namespace Controller.BusinessLogic
{
    public class StudentLogic
    {
        private readonly StudentRepository _studentRepository;
        private readonly GroupRepository _groupRepository;
        private readonly SpecializationRepository _specializationRepository;

        public StudentLogic(StudentRepository studentRepository, GroupRepository groupRepository, SpecializationRepository specializationRepository)
        {
            _studentRepository = studentRepository;
            _groupRepository = groupRepository;
            _specializationRepository = specializationRepository;
        }

        public async Task<List<StudentViewModel>> GetViewModel()
        {
            //var students = await _studentRepository.GetAll();

            var students = new List<Student>
            {
                new Student { Id = 1, Name = "Иванов", GroupId = 1, SpecializationId = null, Status = Status.Study },
                new Student { Id = 2, Name = "Петров", GroupId = null, SpecializationId = null, Status = Status.Academ },
                new Student { Id = 3, Name = "Сидорова", GroupId = 2, SpecializationId = null }
            };

            var result = new List<StudentViewModel>();

            var groups = new List<Group>
                {
                    new Group { Id = 1, Name = "Группа 101", Course = 1, SpecializationId = 1, MaxStudentCount = 25, Number = 101 },
                    new Group { Id = 2, Name = "Группа 202", Course = 2, SpecializationId = 2, MaxStudentCount = 30, Number = 202 },
                    new Group { Id = 3, Name = "Группа 303", Course = 3, SpecializationId = 3, MaxStudentCount = 20, Number = 303 }
                };

            // Моковые данные специализаций
            var specializations = new List<Specialization>
                {
                    new Specialization { Id = 1, Name = "Информатика", Code = "INF" },
                    new Specialization { Id = 2, Name = "Математика", Code = "MATH" },
                    new Specialization { Id = 3, Name = "Физика", Code = "PHYS" }
                };

            foreach (var student in students)
            {
                //var group = student.GroupId.HasValue
                //    ? await _groupRepository.Get(student.GroupId.Value) : null;

                //var specialization = student.SpecializationId.HasValue
                //    ? await _specializationRepository.Get(student.SpecializationId.Value) : null;
                

                var group = student.GroupId.HasValue
                    ? groups.FirstOrDefault(g => g.Id == student.GroupId.Value)
                    : null;

                var specialization = student.SpecializationId.HasValue
                    ? specializations.FirstOrDefault(s => s.Id == student.SpecializationId.Value)
                    : group?.SpecializationId != null
                    ? specializations.FirstOrDefault(s => s.Id == group.SpecializationId)
                    : null;

                result.Add(new StudentViewModel(student, group, specialization));
            }
            return result;
        }

        public Dictionary<Status, string> GetStatusNames()
        {
            return new Dictionary<Status, string>
            {
                { Status.Study, "Обучается" },
                { Status.Expulsion, "Отчислен" },
                { Status.Graduated, "Завершил обучение, выпущен" },
                { Status.Academ, "Академический отпуск" }
            };
        }
    }
}