using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.Json;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using Microsoft.Extensions.Logging;
using PuferFishContracts.BusinessLogicsContracts;
using PuferFishContracts.DataModels;
using PuferFishContracts.Exceptions;
using PuferFishContracts.Extensions;
using PuferFishContracts.StoragesContracts;

namespace PuferFishBusinessLogic.Implementations
{
    internal class BuyerBusinessLogicContract(IBuyerStorageContract buyerStorageContract, ILogger logger) : IBuyerBusinessLogicContract
    {
        private readonly ILogger _logger = logger;
        private readonly IBuyerStorageContract _buyerStorageContract =
        buyerStorageContract;
        public List<BuyerDataModel> GetAllBuyers()
        {
            _logger.LogInformation("GetAllBuyers");
            return _buyerStorageContract.GetList() ?? throw new NullListException();
        }
        public BuyerDataModel GetBuyerByData(string data)
        {
            _logger.LogInformation("Get element by data: {data}", data);
            if (data.IsEmpty())
            {
                throw new ArgumentNullException(nameof(data));
            }
            if (data.IsGuid())
            {
                return _buyerStorageContract.GetElementById(data) ?? throw new
                ElementNotFoundException(data);
            }
            if (Regex.IsMatch(data, @"^((8|\+7)[\- ]?)?(\(?\d{3}\)?[\- ]?)?[\d\-]{7,10}$"))
            {
                return _buyerStorageContract.GetElementByPhoneNumber(data) ??
                throw new ElementNotFoundException(data);
            }
            return _buyerStorageContract.GetElementByFIO(data) ?? throw new
            ElementNotFoundException(data);
        }
        public void InsertBuyer(BuyerDataModel buyerDataModel)
        {
            _logger.LogInformation("New data: {json}",
            JsonSerializer.Serialize(buyerDataModel));
            ArgumentNullException.ThrowIfNull(buyerDataModel);
            buyerDataModel.Validate();
            _buyerStorageContract.AddElement(buyerDataModel);
        }
        public void UpdateBuyer(BuyerDataModel buyerDataModel)
        {
            _logger.LogInformation("Update data: {json}",
            JsonSerializer.Serialize(buyerDataModel));
            ArgumentNullException.ThrowIfNull(buyerDataModel);
            buyerDataModel.Validate();
            _buyerStorageContract.UpdElement(buyerDataModel);
        }
        public void DeleteBuyer(string id)
        {
            _logger.LogInformation("Delete by id: {id}", id);
            if (id.IsEmpty())
            {
                throw new ArgumentNullException(nameof(id));
            }
            if (!id.IsGuid())
            {
                throw new ValidationException("Id is not a unique identifier");
            }
            _buyerStorageContract.DelElement(id);
        }
    }
}