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 CriterionLogic : ICriterionLogic
    {
        private readonly ILogger _logger;
        private readonly ICriterionStorage _criterionStorage;
        public CriterionLogic(ILogger<CriterionLogic> logger, ICriterionStorage criterionStorage)
        {
            _logger = logger;
            _criterionStorage = criterionStorage;
        }
        public bool Create(CriterionBindingModel model)
        {
            CheckModel(model);
            if (_criterionStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }

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

        public CriterionViewModel? ReadElement(CriterionSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            var element = _criterionStorage.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<CriterionViewModel>? ReadList(CriterionSearchModel? model)
        {
            var list = model == null ? _criterionStorage.GetFullList() : _criterionStorage.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(CriterionBindingModel model)
        {
            CheckModel(model);
            if (_criterionStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }

        private void CheckModel(CriterionBindingModel 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 критерия оценивания", nameof(model.Name));
            }

            if (model.Weight <= 0)
            {
                throw new ArgumentException("Некорректный вес критерия оценивания", nameof(model.Weight));
            }

            if (string.IsNullOrEmpty(model.Type.ToString()))
            {
                throw new ArgumentNullException("Нет типа критерия оценивания", nameof(model.Type));
            }
        }
    }
}