ISEbd-22_Rozhkov.I.E._Simple/GasStation/Reports/ChartReport.cs

using GasStation.Repositories;
using Microsoft.Extensions.Logging;

namespace GasStation.Reports;

internal class ChartReport
{
    private readonly ISupplyRepository _supplyRepository;
    private readonly ILogger<ChartReport> _logger;
    public ChartReport(ISupplyRepository supplyRepository, ILogger<ChartReport> logger)
    {
        _supplyRepository = supplyRepository ??
        throw new
        ArgumentNullException(nameof(supplyRepository));
        _logger = logger ??
        throw new ArgumentNullException(nameof(logger));
    }
    public bool CreateChart(string filePath, DateTime dateTime)
    {
        try
        {
            new PdfBuilder(filePath)
            .AddHeader("Поступление продукта")
            .AddPieChart("Поступивший товар", GetData(dateTime))
            .Build();
            return true;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Ошибка при формировании документа");
            return false;
        }
    }
    private List<(string Caption, double Value)> GetData(DateTime dateTime)
    {
        return _supplyRepository
        .ReadSupply()
        .Where(x => x.SupplyDate.Date == dateTime.Date)
        .GroupBy(x => x.ProductID, (key, group) => new { Id = key, Count = group.Sum(x => x.Count)})
        .Select(x => (x.Id.ToString(), (double)x.Count)).ToList();
    }
}