using ClosedXML.Excel;
using System;
using System.Collections.Generic;
using ComponentOrientedPlatform.Abstractions;

namespace ReportPlugin.ExcelBigText;

public sealed class BigTextExcelReport : IReportDocumentWithContextTextsContract
{
    public string DocumentFormat => "xlsx"; 

    public Task CreateDocumentAsync(string filePath, string header, List<string> paragraphs)
    {
        if (string.IsNullOrWhiteSpace(filePath)) throw new ArgumentNullException(nameof(filePath));
        if (string.IsNullOrWhiteSpace(header)) throw new ArgumentNullException(nameof(header));
        if (paragraphs is null) throw new ArgumentNullException(nameof(paragraphs));
        if (paragraphs.Count == 0) throw new ArgumentOutOfRangeException(nameof(paragraphs));

        using var wb = new XLWorkbook();
        var ws = wb.AddWorksheet("Текст");

        ws.Cell(1, 1).Value = header;
        ws.Range(1, 1, 1, 1).Merge();
        ws.Cell(1, 1).Style.Font.SetBold().Font.SetFontSize(18);
        ws.Cell(1, 1).Style.Alignment.SetHorizontal(XLAlignmentHorizontalValues.Center);

        int row = 3;
        foreach (var p in paragraphs)
        {
            if (p is null) throw new ArgumentNullException(nameof(paragraphs), "В списке абзацев есть null.");
            ws.Cell(row, 1).Value = p;
            ws.Cell(row, 1).Style.Alignment.WrapText = true;
            row++;
        }

        ws.Column(1).Width = 120; 
        wb.SaveAs(filePath);
        return Task.CompletedTask;
    }
}