namespace GoogleSheetsScheduleImport;

/// <summary>
/// Normalized grid: row 0 = location headers (col 0 empty or ignored), column 0 = time labels (row 0 ignored).
/// </summary>
public sealed class GridSheetModel
{
    public required string SheetTitle { get; init; }

    /// <summary>display values, sanitized hyphens; [row][col]</summary>
    public required string?[][] Values { get; init; }

    /// <summary>Optional RGB hex backgrounds for block grouping (#RRGGBB or null)</summary>
    public required string?[][]? BackgroundKeys { get; init; }

    public int RowCount => Values.Length;
    public int ColCount => Values.Length == 0 ? 0 : Values[0].Length;
}

public readonly record struct ParsedOccurrenceLine(
    string Name,
    string Month,
    int Day,
    string TimeRange,
    string Location,
    int SourceRowStart,
    int SourceRowEnd,
    int SourceCol);