using System.Text;

namespace GoogleSheetsScheduleImport;

public static class ImportTextEmitter
{
    /// <summary>
    /// Builds text compatible with <see cref="Core.Parsers.EventOccurrenceParser"/> / Import.razor paste target.
    /// </summary>
    public static string Build(
        IReadOnlyList<(string SheetTitle, string SectionHeader, List<ParsedOccurrenceLine> Lines)> sheets)
    {
        var sb = new StringBuilder();
        foreach (var (sheetTitle, sectionHeader, lines) in sheets)
        {
            sb.AppendLine($"# {sheetTitle}");
            sb.AppendLine(sectionHeader);
            foreach (var line in lines.OrderBy(l => l.SourceRowStart).ThenBy(l => l.SourceCol))
                sb.AppendLine(ImportLineFormatter.FormatOccurrenceLine(line));

            sb.AppendLine();
        }

        return sb.ToString().TrimEnd();
    }
}