using Microsoft.Extensions.Logging;
using Publication.Repositories;
using Publication.Repositories.Implementations;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Publication.Reports;

public class ChartReport
{
    private readonly IMaterialRepository _materialRepository;
    private readonly ILogger<ChartReport> _logger;
    public ChartReport(IMaterialRepository materialRepository, ILogger<ChartReport> logger)
    {
        _materialRepository = materialRepository ?? throw new ArgumentNullException(nameof(materialRepository));
        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
    }
    public bool CreateChart(string filePath, DateTime dateTime)
    {
        try
        {
            new PdfBuilder(filePath)
            .AddHeader("Количество материалов")
            .AddPieChart("Материалы", 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 _materialRepository
            .ReadMaterials()
            .Where(x => x.DateMaterials.Date == dateTime.Date)
            .GroupBy(x => x.Id, (key, group) => new { ID = key, Count = group.Sum(y => y.Count) })
            .Select(x => (x.ID.ToString(), (double)x.Count))
            .ToList();
    }
}