using Microsoft.Extensions.Logging;
using ProjectGSM.Entities;
using ProjectGSM.Repositories;

namespace ProjectGSM.Documents;

internal class TableReport
{
    private readonly ICaseRepository _caseRepository;
    private readonly IStatusHistoryRepository _statusHistoryRepository;
    private readonly ILogger<TableReport> _logger;
    internal static readonly string[] item = ["Статусы", "Дата", "Изменений статуса"];

    public TableReport(
        ICaseRepository caseRepository,
        IStatusHistoryRepository statusHistoryRepository,
        ILogger<TableReport> logger)
    {
        _caseRepository = caseRepository ??
                          throw new
                              ArgumentNullException(nameof(caseRepository));
        _statusHistoryRepository = statusHistoryRepository ??
                                   throw new
                                       ArgumentNullException(nameof(statusHistoryRepository));
        _logger = logger ??
                  throw new ArgumentNullException(nameof(logger));
    }

    public bool CreateTable(string filePath, int caseId, DateTime startDate,
        DateTime endDate)
    {
        try
        {
            new ExcelBuilder(filePath)
                .AddHeader($"Сводка по делу \"{_caseRepository.ReadCaseById(caseId).Description}\"", 0, 4)
                .AddParagraph("за период", 0)
                .AddTable([10, 10, 15], GetData(caseId, startDate,
                    endDate))
                .Build();
            return true;
        }
        catch (Exception ex)
        {
            _logger.LogError(ex, "Ошибка при формировании документа");
            return false;
        }
    }

    private List<string[]> GetData(int caseId, DateTime startDate, DateTime endDate)
    {
        var statusData = _statusHistoryRepository
            .ReadStatusHistories()
            .Where(x => x.CreatedAt >= startDate && x.CreatedAt <= endDate && x.CaseId == caseId)
            .GroupBy(x => (x.Status, x.CreatedAt.Date))
            .Select(x => new
            {
                Status = x.Key.Status,
                Date = x.Key.Date,
                Count = x.Count()
            })
            .ToList();

        return new List<string[]>() { item }
            .Union(
                statusData
                    .Select(x => new string[]
                    {
                        x.Status.ToString(), x.Date.ToString(), x.Count.ToString()
                    }))
            .Union(
            [
                [
                    "Всего", "", statusData.Sum(x => x.Count).ToString()
                ]
            ])
            .ToList();
    }
}