namespace ClaudeDo.Ui.ViewModels.Islands;

public enum LogKind { Sys, Tool, Claude, Stdout, Stderr, Done, Msg, User, Edit, ToolResult }

public sealed class LogLineViewModel
{
    public required LogKind Kind { get; init; }
    public required string Text { get; init; }
    public string TimestampFormatted { get; } = DateTime.Now.ToString("HH:mm:ss");
    public string KindMarker => Kind switch
    {
        LogKind.Sys        => "sys",
        LogKind.Tool       => "tool",
        LogKind.Claude     => "claude",
        LogKind.Stdout     => "out",
        LogKind.Stderr     => "err",
        LogKind.Done       => "done",
        LogKind.Msg        => "claude",
        LogKind.User       => "you",
        LogKind.Edit       => "edit",
        LogKind.ToolResult => "result",
        _                  => "",
    };
    public string ClassName => Kind switch
    {
        LogKind.Sys        => "log-sys",
        LogKind.Tool       => "log-tool",
        LogKind.Claude     => "log-claude",
        LogKind.Stdout     => "log-stdout",
        LogKind.Stderr     => "log-stderr",
        LogKind.Done       => "log-done",
        LogKind.Msg        => "log-msg",
        LogKind.User       => "log-user",
        LogKind.Edit       => "log-edit",
        LogKind.ToolResult => "log-result",
        _                  => "",
    };

    /// <summary>Splits formatter entries into one log line per non-blank text line, keeping each entry's kind.</summary>
    public static IEnumerable<LogLineViewModel> FromEntries(IEnumerable<(LogKind Kind, string Text)> entries)
    {
        foreach (var (kind, text) in entries)
            foreach (var raw in text.Split('\n'))
            {
                var piece = raw.TrimEnd('\r');
                if (!string.IsNullOrWhiteSpace(piece))
                    yield return new LogLineViewModel { Kind = kind, Text = piece };
            }
    }
}