using EmployeeManagmentContracts.SearchModels;
using EmployeeManagmentContracts.StoragesContracts;
using EmployeeManagmentContracts.ViewModels;
using EmployeeManagmentDataBaseImplement.Models;

namespace EmployeeManagmentDataBaseImplement.Implements
{
    public class EmployeeStorage : IEmployeeStorage
    {
        // Получить полный список сотрудников
        public List<EmployeeViewModel> GetFullList()
        {
            using var context = new EmployeeManagementDbContext();

            return context.Employees
                .Select(e => new EmployeeViewModel
                {
                    Id = e.Id,
                    NameJob = e.NameJob,
                    StartJob = e.StartJob,
                    EndJob = e.EndJob,
                    PartTimeJob = e.PartTimeJob,
                    Bid = e.Bid,
                    PhysicalPersonsId = e.PhisicalPersonsId,
                    PhysicalPersonName = $"{e.PhisicalPerson.Surname} {e.PhisicalPerson.Name}"
                })
                .ToList();
        }

        // Получить отфильтрованный список сотрудников
        public List<EmployeeViewModel> GetFilteredList(EmployeeSearchModel model)
        {
            using var context = new EmployeeManagementDbContext();

            if (model == null) return new List<EmployeeViewModel>();

            return context.Employees
                .Where(e =>
                    (string.IsNullOrEmpty(model.NameJob) || e.NameJob.Contains(model.NameJob)) &&
                    (!model.StartDateFrom.HasValue || e.StartJob >= model.StartDateFrom) &&
                    (!model.StartDateTo.HasValue || e.EndJob <= model.StartDateTo))
                .Select(e => new EmployeeViewModel
                {
                    Id = e.Id,
                    NameJob = e.NameJob,
                    StartJob = e.StartJob,
                    EndJob = e.EndJob,
                    PartTimeJob = e.PartTimeJob,
                    Bid = e.Bid,
                    PhysicalPersonsId = e.PhisicalPersonsId,
                    PhysicalPersonName = $"{e.PhisicalPerson.Surname} {e.PhisicalPerson.Name}"
                })
                .ToList();
        }

        // Получить сотрудника по ID
        public EmployeeViewModel? GetElement(int id)
        {
            using var context = new EmployeeManagementDbContext();

            var entity = context.Employees
                .FirstOrDefault(e => e.Id == id);

            return entity == null ? null : new EmployeeViewModel
            {
                Id = entity.Id,
                NameJob = entity.NameJob,
                StartJob = entity.StartJob,
                EndJob = entity.EndJob,
                PartTimeJob = entity.PartTimeJob,
                Bid = entity.Bid,
                PhysicalPersonsId = entity.PhisicalPersonsId,
                PhysicalPersonName = entity.PhisicalPerson != null
                    ? $"{entity.PhisicalPerson.Surname} {entity.PhisicalPerson.Name}"
                    : "Не указано" // Обработка отсутствующего физического лица
            };
        }


        // Добавить нового сотрудника
        public void Insert(EmployeeViewModel model)
        {
            using var context = new EmployeeManagementDbContext();

            var newEmployee = new Employee
            {
                NameJob = model.NameJob,
                StartJob = model.StartJob,
                EndJob = model.EndJob,
                PartTimeJob = model.PartTimeJob,
                Bid = model.Bid,
                PhisicalPersonsId = model.PhysicalPersonsId
            };

            context.Employees.Add(newEmployee);
            context.SaveChanges();
        }

        // Обновить сотрудника
        public void Update(EmployeeViewModel model)
        {
            using var context = new EmployeeManagementDbContext();

            var entity = context.Employees.FirstOrDefault(e => e.Id == model.Id);

            if (entity != null)
            {
                entity.NameJob = model.NameJob;
                entity.StartJob = model.StartJob;
                entity.EndJob = model.EndJob;
                entity.PartTimeJob = model.PartTimeJob;
                entity.Bid = model.Bid;
                entity.PhisicalPersonsId = model.PhysicalPersonsId;

                context.SaveChanges();
            }
        }

        // Удалить сотрудника
        public void Delete(int id)
        {
            using var context = new EmployeeManagementDbContext();

            var entity = context.Employees.FirstOrDefault(e => e.Id == id);

            if (entity != null)
            {
                context.Employees.Remove(entity);
                context.SaveChanges();
            }
        }
    }
}