using LawFirmContracts.BindingModels;
using LawFirmContracts.BusinessLogicsContracts;
using LawFirmContracts.SearchModels;
using LawFirmContracts.StoragesContracts;
using LawFirmContracts.ViewModels;
using Microsoft.Extensions.Logging;

namespace LawFirmBusinessLogic.BusinessLogics
{
    public class DocumentLogic : IDocumentLogic
    {
        private readonly ILogger _logger;

        private readonly IDocumentStorage _documentStorage;

        public DocumentLogic(ILogger<DocumentLogic> logger, IDocumentStorage documentStorage)
        {
            _logger = logger;
            _documentStorage = documentStorage;
        }
        public List<DocumentViewModel>? ReadList(DocumentSearchModel? model)
        {
            _logger.LogInformation("ReadList. DocumentName:{DocumentName}. Id:{Id}", model?.DocumentName, model?.Id);
            var list = model == null ? _documentStorage.GetFullList() : _documentStorage.GetFilteredList(model);
            if (list == null)
            {
                _logger.LogWarning("ReadList return null list");
                return null;
            }
            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
            return list;
        }
        public DocumentViewModel? ReadElement(DocumentSearchModel model)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            _logger.LogInformation("ReadElement. ComponentName:{DocumentName}. Id:{Id}", model.DocumentName, model.Id);
            var element = _documentStorage.GetElement(model);
            if (element == null)
            {
                _logger.LogWarning("ReadElement element not found");
                return null;
            }
            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
            return element;
        }
        public bool Create(DocumentBindingModel model)
        {
            CheckModel(model);
            if (_documentStorage.Insert(model) == null)
            {
                _logger.LogWarning("Insert operation failed");
                return false;
            }
            return true;
        }

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

        public bool Update(DocumentBindingModel model)
        {
            CheckModel(model);
            if (_documentStorage.Update(model) == null)
            {
                _logger.LogWarning("Update operation failed");
                return false;
            }
            return true;
        }
        private void CheckModel(DocumentBindingModel model, bool withParams = true)
        {
            if (model == null)
            {
                throw new ArgumentNullException(nameof(model));
            }
            if (!withParams)
            {
                return;
            }
            if (string.IsNullOrEmpty(model.DocumentName))
            {
                throw new ArgumentNullException("Нет названия компонента", nameof(model.DocumentName));
            }
            _logger.LogInformation("Component. ComponentName:{ComponentName}. Id:{Id}", model.DocumentName, model.Id);
            var element = _documentStorage.GetElement(new DocumentSearchModel
            {
                DocumentName = model.DocumentName
            });
            if (element != null && element.Id != model.Id)
            {
                throw new InvalidOperationException("Компонент с таким названием уже есть");
            }
        }
    }
}