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path: root/RhSolutions.AddIn/AddIn/RhSolutionsFunctions.cs
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namespace RhSolutions.AddIn;

public static class RhSolutionsFunctions
{
    private static IDatabaseClient databaseClient = RhSolutionsAddIn.ServiceProvider.GetService<IDatabaseClient>();
    private static ICurrencyClient currencyClient = RhSolutionsAddIn.ServiceProvider.GetRequiredService<ICurrencyClient>();

    [ExcelFunction]
    public static object РЕХАУ(string query)
    {
        ProductSku.TryParse(query, out var skus);

        if (ExcelAsyncUtil.Run(nameof(РЕХАУ), query, delegate
        {
            return databaseClient.GetProducts(query)
                .GetAwaiter()
                .GetResult();
        }) is not IEnumerable<Product> requestResult)
        {
            if (skus.Any())
            {
                return $"{skus.First()} ...";
            }
            else
            {
                return "Загрузка...";
            }
        }

        else
        {
            if (!requestResult.Any() && !skus.Any())
            {
                return ExcelError.ExcelErrorNA;
            }
            else if (!requestResult.Any())
            {
                return $"{skus.First()}";
            }
            else
            {
                var firstProduct = requestResult.First();
                return $"{firstProduct.ProductSku} {firstProduct.Name}";
            }
        }
    }

    [ExcelFunction]
    public static object РЕХАУАРТИКУЛ(string query)
    {
        if (ProductSku.TryParse(query, out var skus))
        {
            return skus.First().Id;
        }
        else
        {
            return ExcelError.ExcelErrorNA;
        }
    }

    [ExcelFunction]
    public static object РЕХАУИМЯ(string query)
    {
        if (!ProductSku.TryParse(query, out var skus))
        {
            return ExcelError.ExcelErrorNA;
        }
        else
        {
            var article = skus.First().Id;

            if (ExcelAsyncUtil.Run(nameof(РЕХАУИМЯ), query, delegate
            {
                return databaseClient.GetProducts(article)
                    .GetAwaiter()
                    .GetResult();
            }) is not IEnumerable<Product> requestResult)
            {
                return "Загрузка...";
            }
            else
            {
                if (!requestResult.Any())
                {
                    return ExcelError.ExcelErrorNA;
                }
                else
                {
                    var firstProduct = requestResult.First();
                    return firstProduct.Name;
                }
            }
        }
    }

    [ExcelFunction]
    public static object РЕХАУЦЕНА(string query)
    {
        if (!ProductSku.TryParse(query, out var skus))
        {
            return ExcelError.ExcelErrorNA;
        }
        else
        {
            var article = skus.First().Id;

            if (ExcelAsyncUtil.Run(nameof(РЕХАУЦЕНА), query, delegate
            {
                return databaseClient.GetProducts(article)
                    .GetAwaiter()
                    .GetResult();
            }) is not IEnumerable<Product> requestResult)
            {
                return "Загрузка...";
            }
            else
            {
                if (!requestResult.Any())
                {
                    return ExcelError.ExcelErrorNA;
                }
                else
                {
                    var firstProduct = requestResult.First();
                    return Math.Round(firstProduct.Price * 1.2m, 2);
                }
            }
        }
    }

    [ExcelFunction]
    public static object РЕХАУЦЕНАРУБ(string line, double dateField)
    {
        if (!ProductSku.TryParse(line, out var skus))
        {
            return ExcelError.ExcelErrorNA;
        }
        else
        {
            var article = skus.First().Id;
            DateTime date = dateField == 0 ? DateTime.Today : DateTime.FromOADate(dateField);

            if (ExcelAsyncUtil.Run(nameof(КУРСЕВРО), dateField, delegate
            {
                var requestResult = currencyClient.GetExchangeRate(date)
                    .GetAwaiter()
                    .GetResult();

                return requestResult ?? -1m;
            }) is not decimal exchangeRate)
            {
                return "Загрузка...";
            }

            else if (ExcelAsyncUtil.Run(nameof(РЕХАУЦЕНАРУБ), line, delegate
            {
                var product = databaseClient.GetProducts(article)
                    .GetAwaiter()
                    .GetResult()
                    .FirstOrDefault();

                return product == null ? -1m :
                    product.Price * (decimal)exchangeRate * 1.2m;
            }) is not decimal requestResult)
            {
                return "Загрузка...";
            }
            else
            {
                if (requestResult < 0)
                {
                    return ExcelError.ExcelErrorNA;
                }
                else
                {
                    return Math.Round(requestResult, 2);
                }
            }
        }
    }

    [ExcelFunction]
    public static object КУРСЕВРО(double dateField)
    {
        DateTime date = dateField == 0 ? DateTime.Today : DateTime.FromOADate(dateField);

        var exchangeRate = ExcelAsyncUtil.Run(nameof(КУРСЕВРО), dateField, delegate
        {
            var requestResult = currencyClient.GetExchangeRate(date)
                .GetAwaiter()
                .GetResult();

            return requestResult ?? -1m;
        });

        if (exchangeRate is not decimal)
        {
            return "Загрузка...";
        }

        return (decimal)exchangeRate < 0 ? ExcelError.ExcelErrorNA : exchangeRate;
    }
}