using CandidateReviewContracts.BindingModels;
using CandidateReviewContracts.BusinessLogicsContracts;
using CandidateReviewContracts.SearchModels;
using CandidateReviewContracts.StoragesContracts;
using CandidateReviewContracts.ViewModels;
using Microsoft.Extensions.Logging;
using System.Text.RegularExpressions;

namespace CandidateReviewBusinessLogic.BusinessLogic
{
    public class CompanyLogic : ICompanyLogic
    {
        private readonly ILogger _logger;
        private readonly ICompanyStorage _сompanyStorage;
        public CompanyLogic(ILogger<CompanyLogic> logger, ICompanyStorage сompanyStorage)
        {
            _logger = logger;
            _сompanyStorage = сompanyStorage;
        }
        public int Create(CompanyBindingModel model)
        {
            CheckModel(model);
            if (_сompanyStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return 0;
            }
            return model.Id;
        }

        public bool Delete(CompanyBindingModel model)
        {
            CheckModel(model, false);
            _logger.LogInformation("Delete. Id: {Id}", model.Id);
            if (_сompanyStorage.Delete(model) == null)
            {
                _logger.LogWarning("Delete operation failed");
                return false;
            }
            return true;
        }

        public CompanyViewModel? ReadElement(CompanySearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            var element = _сompanyStorage.GetElement(model);
            if (element == null)
            {
                _logger.LogWarning("ReadElement element not found");
                return null;
            }
            _logger.LogInformation("ReadElement find. Id: {Id}", element.Id);
            return element;
        }

        public List<CompanyViewModel>? ReadList(CompanySearchModel? model)
        {
            var list = model == null ? _сompanyStorage.GetFullList() : _сompanyStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count: {Count}", list.Count);
            return list;
        }

        public bool Update(CompanyBindingModel model)
        {
            CheckModel(model);
            if (_сompanyStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }

        private void CheckModel(CompanyBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }

            if (!withParams)
            {
                return;
            }

            if (string.IsNullOrEmpty(model.Name))
            {
                throw new ArgumentNullException("Нет названия компании", nameof(model.Name));
            }

            var element = _сompanyStorage.GetElement(new CompanySearchModel
            {
                Name = model.Name
            });

            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Компания с таким названием уже есть");
            }
        }
    }
}